° °

♦

♦

♦

♦

♦

♦

♦

♦

♦

±±±

________________________________________________________________ Maxim Integrated Products 1

19-3900; Rev 0; 05/08

PART TEMP RANGE PIN-PACKAGE

MAX13172ECAI+ 0°C to +70°C 28 SSOP

T1T2T3T4R1R2R3

MAX13170E

RXD RXC TXDTXC SCTE

T1T2T3R1R2R3

MAX13172E

CTS DSR RTSDTRDCD

RXC B

RXD A (104)RXD B

SG (102)

SHIELD (101)

RTS A (105)RTS B

DTR A (108)DTR B

DCD A (107)DCD B

DSR A (109)

CTS A (106)

DSR B

CTS B

LL A (141)

TXD B

SCTE A (113)SCTE B

TXC A (114)TXC B

TXD A (103)

DB-25 CONNECTOR

13

R4

LL

RXC A (115)

18 5 10 8 22 6 23 20 19 4 1 7 16 3 9 17 12 15 11 24 14 2

MAX13174E

+

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS(VCC = 4.5V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5V, and TA = +25°C, V.28 mode only: VDD = +5.6V to +7.1V andVEE = -7.1V to -5.4V. Typical values are at VDD = +6.9V and VEE = -6.7V, no-cable mode: VDD = VCC and VEE = 0, other modes: VDD= +5.15V to +5.7V and VEE = -4.84V to -4.16V. Typical value are at VDD = +5.3V and VEE = -4.5V.) (Notes 2, 3)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.

(All voltages referenced to GND, unless otherwise noted.)Supply Voltages

VCC.......................................................................-0.3V to +6VVDD....................................................................-0.3V to +7.1VVEE.....................................................................+0.3V to -7.1VVDD to VCC ............................................................+0.3 to +6V

Logic Input VoltagesM0, M1, M2, DCE/DTE, T_IN, INVERT..................-0.3V to +6V

Logic Output VoltagesR_OUT....................................................-0.3V to (VCC + 0.3V)

Transmitter OutputsT_OUT_, T_OUT_/R_IN_ (No-Cable Mode,

V.28 only).........................................................-15V to +15VShort-Circuit Duration to GND...............................Continuous

Receiver InputsR_IN_, T_OUT_/R_IN_ ........................................-15V to +15VR_INA to R_INB, T3OUTA/R1INA toT3OUT/R1INB.....................................................-15V to +15V

Continuous Power Dissipation (TA = +70°C)28-Pin SSOP (derate 9.5mW/°C above +70°C) ...........762mW

Junction-to-Case Thermal Resistance (θJC) (Note 1)28-Pin SSOP ................................................................25°C/W

Junction-to-Ambient Thermal Resistance (θJA) (Note 1)28-Pin SSOP ................................................................67°C/W

Operating Temperature Range ................................0°C to 70°CJunction Temperature .....................................................+150°CStorage Temperature Range ............................-65°C to +150°CLead Temperature (soldering, 10s) ................................+300°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

VCC Operating Range VCC 4.5 5.5 V

V.28 mode 5.6 7.1VDD Operating Range VDD

V.10 or V.11 mode 5.15 5.7V

V.28 mode -7.1 -5.4VEE Operating Range VEE

V.10 or V.11 mode -4.84 -4.16V

CH1, CH3 = V.11, CH2 = V.10, CH4 = V.10,no load

5.5

CH1, CH3 = V.11, CH2 = V.10, CH4 = V.10,full load

95 135

C H 1, C H 2, C H 3 = V .11, C H 4 = V .10, ful l l oad 138 180

V.28 mode 3.5 9

mAVCC Supply Current (DCE Mode)(Digital Inputs = GND or VCC)(Transmitter Outputs Static)

ICC

No cable mode; M0, M1, M2, DCE/DTE,INVERT, open or at VCC (VDD = VCC andVEE = GND)

0 10 μA

C H 1, C H 3 = V .11, C H 2, C H 4 = V .10, no l oad 300Internal Power Dissipation(DCE Mode)

PDV.28 mode, full load 54

mW

Note 1: Package thermal resistances were obtained using the method described in JESD51-7, using a four-layer board. For detailedinformation on package thermal considerations, refer to www.maxim-ic.com.cn/thermal-tutorial.

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)(VCC = 4.5V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5V, and TA = +25°C, V.28 mode only: VDD = +5.6V to +7.1V andVEE = -7.1V to -5.4V. Typical values are at VDD = +6.9V and VEE = -6.7V, no-cable mode: VDD = VCC and VEE = 0, other modes: VDD= +5.15V to +5.7V and VEE = -4.84V to -4.16V. Typical value are at VDD = +5.3V and VEE = -4.5V.) (Notes 2, 3)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

CH1, CH3 = V.11, CH2 = V.10 or V.11,CH4 = V.10, no load

2.1

CH1, CH2, CH3 = V.11, CH4 = V.10,full load (output low)

13 30

CH1, CH3 = V.11, CH2, CH4 = V.10,full load (output low)

22 30

V.28 mode, no load 1

V.28 mode, full load (output low) 12 18

mA

VEE Supply Current IEE

No cable mode(VDD = VCC and VEE = GND)

0 10 μA

CH1, CH3 = V.11, CH2 = V.10 or V.11,CH4 = V.10, no load

0.6

CH1, CH2, CH3 = V.11, CH4 = V.10,full load (output high)

11 30

CH1, CH3 = V.11, CH2, CH4 = V.10, fullload (output high)

22 30

V.28 mode, no load 2.5

V.28 mode, full load (output high) 12 10

mA

VDD Supply Current IDD

No cable mode(VDD = VCC and VEE = GND)

0 10 μA

Thermal-Shutdown Protection THSD +145 °C

LOGIC INPUTS (M0, M1, M2, DCE/DTE, INVERT, T1IN, T2IN, T3IN, T4IN)

Input High Voltage VIH 0.66 x V C C V

Input Low Voltage VIL 0.33 x V C C V

Logic-Input Current IIN T1IN, T2IN, T3IN, T4IN -1 +1 μA

Pullup Resistor RPUIN M0, M1, M2, DCE/DTE, INVERT to VCC 50 100 166 kΩLOGIC OUTPUTS (R1OUT, R2OUT, R3OUT, R4OUT)

Output High Voltage VOH ISOURCE = 4mA 0.66 x V C C V

Output Low Voltage VOL ISINK = 4mA 0.33 x V C C V

Output Pullup Resistor RPUY No cable mode (to VCC) 71.4 kΩ

Transmitter Output LeakageCurrent

IZ-0.25V < VOUT < +0.25V, VCC = 0 or nocable mode

±1 ±5 μA

V.11 TRANSMITTER

Open-Circuit Differential OutputVoltage

VODO Open circuit, R = 1.95kΩ, Figure 1 - VCC +VCC V

R = 50Ω, Figure 1 0.5 x VOD OLoaded Differential OutputVoltage (Note 4)

|VODL|R = 50Ω, Figure 1 2

V

Change in Magnitude of OutputDifferential Voltage

ΔVOD R = 50Ω, Figure 1 0.2 V

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)(VCC = 4.5V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5V, and TA = +25°C, V.28 mode only: VDD = +5.6V to +7.1V andVEE = -7.1V to -5.4V. Typical values are at VDD = +6.9V and VEE = -6.7V, no-cable mode: VDD = VCC and VEE = 0, other modes: VDD= +5.15V to +5.7V and VEE = -4.84V to -4.16V. Typical value are at VDD = +5.3V and VEE = -4.5V.) (Notes 2, 3)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Common-Mode Output Voltage VOC R = 50Ω, Figure 1 3.0 V

Change in Magnitude ofCommon-Mode Output Voltage

ΔVOC R = 50Ω, Figure 1 0.2 V

Short-Circuit Current ISC VOUT = GND 150 mA

Rise Time tR Figures 2, 5 4 10 ns

Fall Time tF Figures 2, 5 6 10 ns

Transmitter Input-to-Output PropDelay

tPHL, tPLH Figures 2, 5 22 ns

Data Skew |tPHL-tPLH| Figures 2, 5 (Note 5) 3 ns

Output-to-Output Skew tSKEWT Figures 2, 5 (Notes 5, 6) 3 ns

V.11 RECEIVER

Differential Threshold Voltage VTH -7V ≤ VCM ≤ +7V -200 -50 mV

Input Hysteresis ΔVTH -7V ≤ VCM ≤ +7V 15 mV

Receiver Input Current IIN -10V ≤ VA,B ≤ +10V -0.66 +0.66 mA

Receiver Input Resistance RIN -10V ≤ VA,B ≤ +10V 15 30 kΩRise or Fall Time tR, tF Figures 2, 6 3 ns

Receiver Input-to-Output Delay tPHL, tPLH Figures 2, 6 16 26 ns

Data Skew |tPHL-tPLH| Figures 2, 6 (Note 5) 3.5 ns

Output-to-Output Skew tSKEWR (Notes 5, 6) 3.5 ns

V.10 TRANSMITTER

RL = 3.9kΩ (out high) 4 6Open-Circuit Output VoltageSwing (Figure 3)

VORL = 3.9kΩ (out low) -6 -4

V

RL = 450Ω (out high) 3.6

RL = 450Ω (out low) -3.6Output Voltage Swing (Figure 3) VT

RL = 450Ω 0.9 x |VO|

V

Short-Circuit Current ISC VO = GND -55 +55 mA

Rise or Fall Time tR, tF RL = 450Ω, CL =100pF (Figure 7) 2 μs

Transmitter Input-to-Output Delay tPLH, tPHL RL = 450Ω, CL =100pF (Figure 7) 1 μs

V.10 RECEIVER

Input Threshold Voltage VTH Measured on inverting input (A) 50 250 mV

Input Hysteresis ΔVTH 25 mV

Receiver Input Current IIN -10V ≤ VA ≤ +10V -0.66 +0.66 mA

Receiver Input Impedance RIN -10V ≤ VA ≤ +10V 15 30 kΩRise or Fall Time tR, tF Figures 4, 8 3 ns

Receiver Input-to-Output Delayfrom Low to High

tPLH Figures 4, 8 55 ns

Receiver Input-to-Output Delayfrom High to Low

tPHL Figures 4, 8 109 ns

Data Skew |tPHL-tPLH| Figures 4, 8 60 ns

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (continued)(VCC = 4.5V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5V, and TA = +25°C, V.28 mode only: VDD = +5.6V to +7.1V andVEE = -7.1V to -5.4V. Typical values are at VDD = +6.9V and VEE = -6.7V, no-cable mode: VDD = VCC and VEE = 0, other modes: VDD= +5.15V to +5.7V and VEE = -4.84V to -4.16V. Typical value are at VDD = +5.3V and VEE = -4.5V.) (Notes 2, 3)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

V.28 TRANSMITTER

Open circuit (output high) VDD

Open circuit (output low) VEE

Output high +5 +6.8Output-Voltage Swing VOD

RL = 3kΩOutput low -6.8 -5

V

Short-Circuit Current |ISC| 85 mA

Output Slew Rate SRR/F RL = 3kΩ, CL = 2500pF, Figures 3, 9 4 30 V/μs

Transmitter Input-to-OutputPropagation Delay

tPHL, tPLH RL = 3kΩ, CL = 2500pF, Figures 3, 9 1 2 μs

V.28 RECEIVER

Input Threshold Low VIL 0.8 V

Input Threshold High VIH 2 V

Input Hysteresis VHYST 0.25 V

Input Resistance RIN -15V ≤ VIN ≤ +15V 3 5 7 kΩRise or Fall Time tR, tF Figures 4, 10 3 ns

Receiver Input-to-Output Delay tPHL, tPLH Figures 4, 10 150 ns

ESD PROTECTION (T_OUT_, T_OUT_/R_OUT_, R_IN_ to GND)

Contact Discharge IEC61000-4-2 + 3

Air Gap Discharge IEC61000-4-2 ±3ESD Protection

Human Body Model ±10

kV

Note 2: The MAX13172E is designed to operate with VDD and VEE supplied by the MAX13170E charge pump.Note 3: All devices are 100% production tested at TA = +25°C, and are guaranteed by design for TA = 0°C to +70°C as specified.Note 4: |VODL| is guaranteed at both 0.5 x VODO and 2V.Note 5: Guaranteed by design, not production tested.Note 6: Ouput-to-output skews are evaluated as a difference of propagation delays between different channels in the same condtion

and for the same polarity (LH or HL).

6 _______________________________________________________________________________________

(TA = +25°C, unless otherwise noted.)

V.11 MODE SUPPLY CURRENT (ICC)vs. DATA RATE

DATA RATE (kbps)

0.1 100 1,000 10,0001 10 100,000

I CC

(mA)

0

250

50

100

150

200 MAX

1317

2E to

c01

DCE MODE, INVERT = 1ALL TRANSMITTERS OPERATINGAT THE SPECIFIED DATA RATE

FULL LOAD, R = 50Ω

NO LOAD, R = 1.95kΩ

V.11 MODE SUPPLY CURRENT (IDD)vs. DATA RATE

DATA RATE (kbps)

0.1 100 1,000 10,0001 10 100,000

I DD

(mA)

0

10

2

4

6

8 MAX

1317

2E to

c02

DCE MODE, INVERT = 1ALL TRANSMITTERS OPERATINGAT THE SPECIFIED DATA RATE

FULL LOAD, R = 50Ω�NO LOAD, R = 1.95kΩ

V.11 MODE SUPPLY CURRENT (IEE)vs. DATA RATE

DATA RATE (kbps)

0.1 100 1,000 10,0001 10 100,000

I EE

(mA)

0

10

2

4

6

8 MAX

1317

2E to

c03

DCE MODE, INVERT = 0ALL TRANSMITTERS OPERATINGAT THE SPECIFIED DATA RATE

FULL LOAD, R = 50Ω�NO LOAD, R = 1.95kΩ

0

1

4

3

2

5

6

0 10050 150 200 250

V.28 MODE SUPPLY CURRENT (ICC)vs. DATA RATE

MAX

1317

2E to

c04

DATA RATE (kbps)

I CC

(mA)

DCE MODE, INVERT = 0ALL TRANSMITTERS OPERATINGAT THE SPECIFIED DATA RATE

FULL LOAD (RL = 3kΩ, CL = 2500pF)�AND NO LOAD

0

4

12

8

16

20

0 10050 150 200 250

V.28 MODE SUPPLY CURRENT (IDD)vs. DATA RATE

MAX

1317

2E to

c05

DATA RATE (kbps)

I DD

(mA)

DCE MODE, INVERT = 0ALL TRANSMITTERS OPERATINGAT THE SPECIFIED DATA RATE

FULL LOAD, RL = 3kΩ,CL = 2500pF

0

4

12

8

16

20

0 10050 150 200 250

V.28 MODE SUPPLY CURRENT (IEE)vs. DATA RATE

MAX

1317

2E to

c06

DATA RATE (kbps)

I EE

(mA)

DCE MODE, INVERT = 0ALL TRANSMITTERS OPERATINGAT THE SPECIFIED DATA RATE

FULL LOAD, RL = 3kΩ,CL = 2500pF

-5

-2

-3

-4

0

-1

4

3

2

1

5

0 10 20 30 40 50 60 70

V.11 LOADED DRIVER DIFFERENTIALOUTPUT VOLTAGE vs. TEMPERATURE

MAX

1317

2E to

c07

TEMPERATURE (°C)

DRIV

ER D

IFFE

RENT

IAL

OUTP

UT V

OLTA

GE (V

)

VOUT+

VOUT-

DCE MODE, INVERT = 1,R = 50Ω

-10

-4

-6

-8

0

-2

8

6

4

2

10

0 10 20 30 40 50 60 70

V.10 OUTPUT VOLTAGEvs. TEMPERATURE

MAX

1317

2E to

c08

TEMPERATURE (°C)

OUTP

UT V

OLTA

GE (V

) VOUT+

VOUT-

DCE MODE, VDD = +5.3V,VEE = -4.5V

RL = 3.9kΩ

RL = 450Ω

RL = 3.9kΩ

0.80

0.86

0.84

0.82

0.90

0.88

0.98

0.96

0.94

0.92

1.00

0 10 20 30 40 50 60 70

V.10 RATIO OF LOADED/UNLOADEDOUTPUT VOLTAGE vs. TEMPERATURE

MAX

1317

2E to

c09

TEMPERATURE (°C)

RATI

O (V

/V)

VOUT+

VOUT-

DCE MODE, VDD = +5.3V,VEE = -4.5V

_______________________________________________________________________________________ 7

(TA = +25°C, unless otherwise noted.)

-10

-4

-6

-8

0

-2

8

6

4

2

10

0 10 20 30 40 50 60 70

V.28 LOADED OUTPUT VOLTAGEvs. TEMPERATURE

MAX

1317

2E to

c10

TEMPERATURE (°C)

OUTP

UT V

OLTA

GE (V

)

DCE MODE, R = 3kΩ,�VDD = +6.9V,VEE = -6.7V

VOUT+

VOUT-

-500

-300

-400

-100

-200

100

0

200

400

300

500

-10 0 5-5 10

V.11 RECEIVER INPUT CURRENTvs. INPUT VOLTAGE

MAX

1317

2E to

c11

INPUT VOLTAGE (V)

INPU

T CU

RREN

T (μ

A)

DTE MODE

R1IN_

R2IN_, R3IN_

-5

-3

-4

-1

-2

1

0

2

4

3

5

-15 0 5 10-5-10 15

V.28 RECEIVER INPUT CURRENTvs. INPUT VOLTAGE

MAX

1317

2E to

c12

INPUT VOLTAGE (V)

INPU

T CU

RREN

T (m

A)

0

10

5

20

15

30

25

35

0 2K1K 3K 4K 5K

V.28 SLEW RATEvs. LOAD CAPACITANCE

MAX

1317

2E to

c13

500 2.5K1.5K 3.5K 4.5K

LOAD CAPACITANCE (pF)

SLEW

RAT

E (V

/μs)

RL = 3kΩ

SRF

SRR

0

2.0

1.6

0.8

0.4

1.2

0 400200 600 800 1,000

V.10 TEANSMITTER RISE/FALL TIMEvs. LOAD CAPACITANCE

MAX

1317

2E to

c14

100 500300 700 900

LOAD CAPACITANCE (pF)

RISE

/FAL

L TI

ME

(μs)

VDD = +5.3V,VEE = -4.5V

FALL

RISE

LOOPBACK SCOPE SHOT PHOTO V.11MODE (UNLOADED)

MAX13172E toc15

10ns/div

ROUT

TOUT/RIN

TIN

5V/div

5V/div

5V/div

LOOPBACK SCOPE SHOT PHOTO V.28 MODE (LOADED)

MAX13172E toc16

1μs/div

ROUT

TOUT/RIN

TIN

5V/div

5V/div

5V/div

RL = 3kΩ, CL = 2500pF

LOOPBACK SCOPE SHOT PHOTO V.10MODE (LOADED)

MAX13172E toc17

4μs/div

ROUT

TOUT/RIN

TIN

5V/div

5V/div

5V/div

RL = 450Ω

RL = 3.9kΩ

8 _______________________________________________________________________________________

1 VCC

2 VDD

3 T1IN

4 T2IN

5 T3IN

6 R1OUT

7 R2OUT

8 R3OUT

9 T4IN

10 R4OUT

11 M0

12 M1

13 M2

14 DCE/DTE

15 INVERT

16T4OUTA/

R4INA

17 R3INB

18 R3INA

19 R2INB

20 R2INA

21T3OUTB/

R1INB

22T3OUTA/

R1INA

23 T2OUTB

24 T2OUTA

25 T1OUTB

26 T1OUTA

27 GND

28 VEE

μ

μ

DTE

DTE

μ

VOC

R

R

VOD CL RLVO

T A

100pF

15pF

100pF

100ΩT

A

B B

A

R

15pF

T A R

_______________________________________________________________________________________ 9

DTEDTE

DTE

DTEDTE

10 ______________________________________________________________________________________

+1V

-1V

V0H

V0L

A -B

R

0INPUT

OUTPUT

0

tPLH tPHL

f = 1MHz: tr, tf ≤ 1ns

VCC/2 VCC/290%

10%tR

90%

10%tF

0

tPHL0

V0H

-V0L

TIN_

A10%

90%

tF

0

tPLH

90%

10%

tR

tR, tF ≤ 10nsVCC/2 VCC/2VCC

VIH

VIL

V0H

V0L

A

R

0

tPHL

0

tPLH

tR, tF ≤ 10ns

VCC/2 VCC/290%

10%

tF

90%10%

tR

VCC/2

90%

10%50%

tPLH

VCC

0

V0

-V0

TIN_

A - B

tR

VCC/2

tPHL

90%10%

50%

tF

f = 1MHz: tr, tf ≤ 1ns

PROTOCOL M2 M1 M0DCE/

DTEINVERT T1 T2 T3 R1 R2 R3 T4 R4

Not Used(Default V.11)

0 0 0 0 0 V.11 V.11 Z V.11 V.11 V.11 Z V.10

RS-530A 0 0 1 0 0 V.11 V.10 Z V.11 V.10 V.11 Z V.10

RS-530 0 1 0 0 0 V.11 V.11 Z V.11 V.11 V.11 Z V.10

X.21 0 1 1 0 0 V.11 V.11 Z V.11 V.11 V.11 Z V.10

V.35 1 0 0 0 0 V.28 V.28 Z V.28 V.28 V.28 Z V.28

RS-449/V.36 1 0 1 0 0 V.11 V.11 Z V.11 V.11 V.11 Z V.10

V.28/RS-232 1 1 0 0 0 V.28 V.28 Z V.28 V.28 V.28 Z V.28

No Cable 1 1 1 0 0 Z Z Z Z Z Z Z Z

Not Used(Default V.11)

0 0 0 0 1 V.11 V.11 Z V.11 V.11 V.11 V.10 Z

RS-530A 0 0 1 0 1 V.11 V.10 Z V.11 V.10 V.11 V.10 Z

RS-530 0 1 0 0 1 V.11 V.11 Z V.11 V.11 V.11 V.10 Z

X.21 0 1 1 0 1 V.11 V.11 Z V.11 V.11 V.11 V.10 Z

V.35 1 0 0 0 1 V.28 V.28 Z V.28 V.28 V.28 V.28 Z

RS-449/V.36 1 0 1 0 1 V.11 V.11 Z V.11 V.11 V.11 V.10 Z

V.28/RS-232 1 1 0 0 1 V.28 V.28 Z V.28 V.28 V.28 V.28 Z

No Cable 1 1 1 0 1 Z Z Z Z Z Z Z Z

______________________________________________________________________________________ 11

VIH

VIL

(2.0V)

(-0.3V)

V0H

V0L

A

R

1.3V

tPHL

1.3V

tPLH

tR, tF ≤ 10ns

VCC/2 VCC/290%

10%

tF

90%10%

tR

0

tPHL0

V0H

-V0L

TIN_

A-3V

3V

tF SRF = 6/tF SRR = 6/tR

0

tPLH

3V

-3V

tR

tR, tF ≤ 10nsVCC/2 VCC/2VCC

12 ______________________________________________________________________________________

/DTE

±

±

• ±• ±• ±

PROTOCOL M2 M1 M0DCE/

DTEINVERT T1 T2 T3 R1 R2 R3 T4 R4

Not Used(Default V.11)

0 0 0 1 0 V.11 V.11 V.11 Z V.11 V.11 V.10 Z

RS-530A 0 0 1 1 0 V.11 V.10 V.11 Z V.10 V.11 V.10 ZRS-530 0 1 0 1 0 V.11 V.11 V.11 Z V.11 V.11 V.10 ZX.21 0 1 1 1 0 V.11 V.11 V.11 Z V.11 V.11 V.10 ZV.35 1 0 0 1 0 V.28 V.28 V.28 Z V.28 V.28 V.28 ZRS-449/V.36 1 0 1 1 0 V.11 V.11 V.11 Z V.11 V.11 V.10 ZV.28/RS-232 1 1 0 1 0 V.28 V.28 V.28 Z V.28 V.28 V.28 ZNo Cable 1 1 1 1 0 Z Z Z Z Z Z Z ZNot Used(Default V.11)

0 0 0 1 1 V.11 V.11 V.11 Z V.11 V.11 Z V.10

RS-530A 0 0 1 1 1 V.11 V.10 V.11 Z V.10 V.11 Z V.10

RS-530 0 1 0 1 1 V.11 V.11 V.11 Z V.11 V.11 Z V.10

X.21 0 1 1 1 1 V.11 V.11 V.11 Z V.11 V.11 Z V.10

V.35 1 0 0 1 1 V.28 V.28 V.28 Z V.28 V.28 Z V.28

RS-449/V.36 1 0 1 1 1 V.11 V.11 V.11 Z V.11 V.11 Z V.10

V.28/RS-232 1 1 0 1 1 V.28 V.28 V.28 Z V.28 V.28 Z V.28

No Cable 1 1 1 1 1 Z Z Z Z Z Z Z Z

______________________________________________________________________________________ 13

Ω

CHARGE-CURRENTLIMIT RESISTOR

DISCHARGERESISTANCE

STORAGECAPACITOR

Cs150pF

RC 50MΩ TO 100MΩ

RD 330Ω

HIGH-VOLTAGE

DCSOURCE

DEVICEUNDERTEST

tr = 0.7ns TO 1ns30ns

60ns

t

100%90%

10%

I PEA

K

I

CHARGE-CURRENTLIMIT RESISTOR

DISCHARGERESISTANCE

STORAGECAPACITOR

Cs100pF

RC 1MΩ

RD 1500Ω

HIGH-VOLTAGE

DCSOURCE

DEVICEUNDERTEST

IP 100%90%

36.8%

tRLTIME

tDL

CURRENT WAVEFORM

PEAK-TO-PEAK RINGING(NOT DRAWN TO SCALE)

Ir

10%0

0

AMPS

14 ______________________________________________________________________________________

DTEDTE

Ω±

Ω

Ω

Ω±±

±

Ω

Ω

Ω ±

Ω

μ

DTE

______________________________________________________________________________________ 15

CTS A4

25

2118

214

2411

1512

179

316

7

192023

810

622

513

CTS B

DSR ADSR B

DCD ADCD B

DTR ADTR B

RTS ARTS B

RXD ARXD BRXC ARXC B

TXC ATXC B

SCTE ASCTE B

TXD ATXD B

CHARGEPUMP

DTE DCE

RTS ARTS B

DTR ADTR B

DCD ADCD B

DSR ADSR B

CTS ACTS B

TXD ATXD BSCTE ASCTE B

TXC ATXC B

RXC ARXC B

RXD ARXD BSG

M2

C121μF

C131μF

C54.7μF

C21μF

C11μF

C44.7μF

C34.7μF

2

21

T1

T2

T3

R1

R2

R3

28

2726

25

24232221

2019

18171615

3

VCC5V

1

24

5

6

7

8

9

10

11

12

1314

14

3

4 6 7 9 10 16 15 18 17 19 20 22 23 24 15

8 11 12 13

C6100pF

C7100pF

C8100pF

M1

M0

DCE/

DTE

M1

M2

DCE/DTE

M0

VCC

VCC

VCC

VEE

VEE

VCC

VDD GND

LATCH

MAX13174E

MAX13170E

T1

T2

T3

T4

R1

R2

R3

26

27

28

252423

2221

20191817

5

6

7

8

9

4

3

1

2

R416

15

10

11

12

13NC

NC

14

M1

M2

DCE/DTE INVERT

M0

DB-25CONNECTOR

MAX13172E

C111μF

C101μF

C91μF

1SHIELD

DTE_TXD/DCE_RXD

DTE_SCTE/DCE_RXC

DTE_TXC/DCE_TXC

DTE_RXC/DCE_SCTE

DTE_RXD/DCE_TXD

DTE_RTS/DCE_CTS

DTE_DTR/DCE_DSR

DTE_DCD/DCE_DCD

DTE_DSR/DCE_DTR

DTE_CTS/DCE_RTS

M1

DCE/DTE

M0

MODE

V.35

RS-449. V.36

RS-232

PIN 18

PIN 7

N.C.

PIN 7

PIN 21

PIN 7

PIN 7

N.C.

CABLE WIRING FOR MODE SELECTION

MODE

DTE

DCE

PIN 25

PIN 7

N.C.

CABLE WIRING FOR DTE/DCE SELECTION

16 ______________________________________________________________________________________

A′

C′

A

C

GENERATORUNBALANCED

INTERCONNECTINGCABLE

CABLETERMINATION RECEIVER

LOAD

-3.25mA

3.25mA

-10V

+10V

-3V

+3VVZ

IZ

R611kΩ

R85kΩ

A′

B′

C′

A

B

GND

R555kΩ

1.4V

R711kΩ

R455kΩ

MAX13172E

S3

RECEIVER

S2

S1

+ -

R611kΩ

R85kΩ

A′

C′

A

GND

R555kΩ

MAX13172E

S3

RECEIVER

100ΩMIN

A′

B′

C′

A

B

C

GENERATOR

BALANCEDINTERCONNECTING

CABLECABLE

TERMINATION RECEIVER

LOAD

______________________________________________________________________________________ 17

R611kΩ

R85kΩ

A′

B′

C′

A

B

GND

R555kΩ

1.4V

R711kΩ

R455kΩ

MAX13172E

S3

RECEIVER

S2

S1

+ -

R611kΩ

R85kΩ

A′

C′

A

GND

R555kΩ

MAX13172E

S3

RECEIVER

R611kΩ

R85kΩ

A′

B′

C′

A

B

GND

R555kΩ

1.4V

R711kΩ

R455kΩ

MAX13172E

S3

RECEIVER

S2

S1

+ -

18 ______________________________________________________________________________________

CTS A4

214

2411

1512

179

316

7

192023

810

622

513

18

CTS B

DSR ADSR B

DCD ADCD B

DTR ADTR B

RTS ARTS B

RXD ARXD BRXC ARXC B

TXC ATXC B

SCTE ASCTE B

TXD ATXD B

CHARGEPUMP

DTE DCE

RTS ARTS B

DTR ADTR B

DCD ADCD B

DSR ADSR B

CTS ACTS B

LLALLA

TXD ATXD BSCTE ASCTE B

TXC ATXC B

RXC ARXC B

RXD ARXD BSG

M2

C121μF

C131μF

C54.7μF+

C21μF

C11μF

C44.7μF

C34.7μF

2

21

T1

T2

T3

R1

R2

R3

28

2726

25

24232221

2019

18171615

3

VCC5V

1

24

5

6

7

8

9

10

11

12

1314

14

3

4 6 7 9 10 16 15 18 17 19 20 22 23 24 15

8 11 12 13

C6100pF

C7100pF

C8100pF

M1

M0

DCE/

DTE

M1

M2

DCE/DTE

M0

VCC

VCC

VEE

VEE

VCC

VDD GND

LATCH

MAX13174E

MAX13170E

T1

T2

T3

T4

R1

R2

R3

26

27

28

252423

2221

20191817

5

6

7

8

9

4

3

1

2

R416

15

10

11

12

1314

M1

M2

DCE/DTE

INVERT

M0

M1M2

INVERTDCE/DTE

M0

DB-25CONNECTOR

MAX13172E

C111μF

C101μF

C91μF

1SHIELD

DTE_TXD/DCE_RXD

DTE_SCTE/DCE_RXC

DTE_TXC/DCE_TXC

DTE_RXC/DCE_SCTE

DTE_RXD/DCE_TXD

DTE_RTS/DCE_CTS

DTE_DTR/DCE_DSR

DTE_DCD/DCE_DCD

DTE_DSR/DCE_DTR

DTE_CTS/DCE_RTS

DTE_LL/DCE_LL

______________________________________________________________________________________ 19

CTS A (106)5

316

179

1512

2411

214

7

136

22

810

2023

419

18

CTS B

DSR A (107)DSR B

DCD A (109)DCD B

DTR A (108)DTR B

RTS A (105)RTS B

RXD A (104)RXD BRXC A (115)RXC B

CHARGEPUMP

LL A (141)

TXC A (114)TXC B

SCTE A (113)SCTE B

TXD A (103)TXD BSGND (102)

M2

C121μF

C131μF

C54.7μF+

C21μF

C11μF

C44.7μF

C34.7μF

2

21

T1

T2

T3

R1

R2

R3

28

2726

25

24232221

2019

18171615

3

VCC5V

1

24

5

6

7

8

9

10

11

12

1314

14

3

4 6 7 9 10 16 15 18 17 19 20 22 23 24 15

8 11 12 13

C6100pF

C7100pF

C8100pF

M1

M0

DCE/

DTE

M1

M2

DCE/DTE

M0

VCC

VCC

VEE

VEE

VCC

VCC

VDD GND

LATCH

MAX13174E

MAX13170E

T1

T2

T3

T4

R1

R2

R3

26

27

28

252423

2221

20191817

5

6

7

8

9

4

3

1

2

R416

15

10

11

12

1314

M1

M2

DCE/DTE

INVERT

M0

M1M2

INVERT

M0

DB-25FEMALE

CONNECTOR

MAX13172E

C111μF

C101μF

C91μF

1SHIELD (101)

RXD

RXC

TXC

SCTE

TXD

CTS

DSR

DCD

DTR

RTS

LL

NC

20 ______________________________________________________________________________________

4

214

2411

1512

179

316

7

192023

810

622

513

18

CHARGEPUMP

RTS A (105)RTS B

DTR A (108)DTR B

DCD A (109)DCD B

DSR A (107)DSR B

CTS A (106)CTS B

LL A (141)

TXD A (103)TXD BSCTE A (113)SCTE B

TXC A (114)TXC B

RXC A (115)RXC B

RXD A (104)RXD BSG

M2

C121μF

C131μF

C54.7μF

C21μF

C11μF

C44.7μF

C34.7μF

2

21

T1

T2

T3

R1

R2

R3

28

2726

25

24232221

2019

18171615

3

VCC5V

1

24

5

6

7

8

9

10

11

12

1314

14

3

4 6 7 9 10 16 15 18 17 19 20 22 23 24 15

8 11 12 13

C6100pF

C7100pF

C8100pF

M1

M0

DCE/

DTE

M1

M2

DCE/DTE

M0

VCC

VCC

VEE

VEE

VCC

VDD GND

LATCH

MAX13174E

MAX13170E

T1

T2

T3

T4

R1

R2

R3

26

27

28

252423

2221

20191817

5

6

7

8

9

4

3

1

2

R416

15

10

11

12

1314

M1

M2

DCE/DTE

INVERT

M0

M1M2

INVERT

M0

DB-25 MALECONNECTOR

MAX13172E

C111μF

C101μF

C91μF

1SHIELD

TXD

SCTE

TXC

RXC

RXD

RTS

DTR

DCD

DSR

CTS

LL

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 21

© 2008 Maxim Integrated Products

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

VEE

GND

T1OUTA

T1OUTB

T2OUTA

T2OUTB

INVERT

T3OUTA/R1INA

T3OUTB/R1INB

R2INA

R2INB

R3INA

R3INB

T4OUTA/R4INA

DCE/DTE

M2

M1

M0

R4OUT

T4IN

R3OUT

R2OUT

R1OUT

T3IN

T2IN

T1IN

VDD

VCC

SSOP

TOP VIEW

MAX13172E

www.maxim-ic.com.cn/packages

28 SSOP A28-2 21-0056

TRANSISTOR COUNT: 2348PROCESS: BiCMOS