MAXIM MXL1544, MAX3175 User Manual

General Description

The MXL1544/MAX3175 are four-driver/four-receiver
multiprotocol transceivers that operate from a single
+5V supply in conjunction with the MXL1543. The
MXL1544/MAX3175, along with the MXL1543 and
MXL1344A, form a complete software-selectable data
terminal equipment (DTE) or data communication
equipment (DCE) interface port that supports the V.28
(RS-232), V.10/V.11 (RS-449/V.36, EIA-530, EIA-530A,
X.21, RS-423), and V.35 protocols. The MXL1544/
MAX3175 transceivers carry serial interface control sig­naling, while the MXL1543 carries the high-speed clock
and data signals. Typically, the MXL1543 is terminated
using the MXL1344A. The MAX3175 is identical to the
MXL1544 except for the addition of a 10µs (typ) glitch
rejection circuit at the receiver inputs. The MXL1544/
MAX3175 are available in 28-pin SSOP packages.

Applications

Data Networking

CSU and DSU

Data Routers

Switches

PCI Cards

Telecommunication Equipment

Features

♦ MXL1544/MAX3175, MXL1543, MXL1344A Chipset

Is Pin Compatible with LTC1544, LTC1543,
LTC1344A Chipset

♦ Chipset Operates from a Single +5V Supply
♦ Software-Selectable DCE/DTE

♦ Supports V.28 (RS-232), V.10/V.11 (RS-449/V.36,

EIA-530, EIA-530A, X.21, RS-423) Protocols

♦ Flow-Through Pin Configuration

♦ True Fail-Safe Operation

♦ Low 0.5µA Shutdown Current (No-Cable Mode)

♦ 10µs Receiver Input Deglitching (MAX3175 Only)

♦ TUV-Certified NET1/NET2 and TBR1/TBR2

Compliant

MXL1544/MAX3175

+5V Multiprotocol, Software-Selectable

Control Transceivers

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-1992; Rev 0; 4/01

Typical Operating Circuit

Pin Configuration appears at end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

PART TEMP. RANGE PIN-PACKAGE

MXL1544CAI 0°C to +70°C 28 SSOP
MAX3175CAI 0°C to +70°C 28 SSOP

LL

CTS DSR RTSDTRDCD

MXL1544
MAX3175

D3

DCD B

R1

13

CTS A (106)

CTS B

R2R3

DSR A (109)

DSR B

R4

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

LL A (141)

DTR A (108)

DTR B

DCD A (107)

D1D2

RTS A (105)

RTS B

DB-25 CONNECTOR

RXD RXC TXDTXC SCTE

MXL1543

R1

R2R3

RXC B

RXD A (104)

RXD B

SG (102)

SHIELD (101)

RXC A (115)

D3D4

TXC A (114)

TXC B

SCTE A (113)

SCTE B

D1D2

TXD B

TXD A (103)

MXL1344A

MXL1544/MAX3175

+5V Multiprotocol, Software-Selectable
Control Transceivers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= +5V, VDD= +6.8V, VEE= -5.6V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

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

All Voltages to GND Unless Otherwise Noted
Supply Voltages

V

CC

.......................................................................-0.3V to +6V

V

DD

....................................................................-0.3V to +7.2V

V

EE

........................................................................+0.3V to -7V

V

DD

to VEE(Note 1)............................................................13V

Logic Input Voltage

M0, M1, M2, DCE/DTE, INVERT, T_IN..................-0.3V to +6V

Logic Output Voltage

R_OUT....................................................-0.3V to (V

CC

+ 0.3V)

Transmitter Outputs

T_OUT_, T_OUT_/R_IN........................................-15V to +15V

Short-Circuit Duration.............................................Continuous

Receiver Inputs

R_IN_, T_OUT_/R_IN_ .........................................-15V to +15V

Continuous Power Dissipation (T

A

= +70°C)

28-Pin SSOP (derate 11.1mW/°C above +70°C) .........889mW

Operating Temperature Range...............................0°C to +70°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Note 1: VDDand VEE- can have maximum magnitude of 7.2V and 7V, respectively, but their difference cannot exceed 13V.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

POWER SUPPLIES

V

S up p l y C ur r ent ( D C E

C C

M od e) ( D i g i tal Inp uts = G N D or
V

) ( Tr ansm i tter s O utp uts

C C

S tati c)

VEE Supply Current (DCE
Mode) (Digital Inputs = GND
or V

) (Transmitters Outputs

CC

Static)

V

S up p l y C ur r ent ( D C E

D D

M od e) ( D i g i tal Inp uts = G N D or
V

) ( Tr ansm i tter s O utp uts

C C

S tati c)

Internal Power Dissipation
(DCE Mode)

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

Input High Voltage V
Input Low Voltage V

Logic Input Current I

I

CC

I

EE

I

DD

P

D

IH

IL

IN

RS-530, RS-530A, X.21, no load 2.7

RS-530, RS-530A, X.21, full load 95 120

V.28, no load 1 2

V.28, full load 1 2

No-cable mode, Invert = V

RS-530, RS-530A, X.21, no load 2.1

RS-530, X.21, full load 14

RS-530A, full load 25

V.28, no load 1

V.28, full load 12

No-cable mode 0.5 µA

RS-530, RS-530A, X.21, no load 0.6

RS-530, RS-530A, X.21, full load 1

V.28, no load 1

V.28, full load 12

No-cable mode 0.5 µA

RS-530, RS-530A, X.21, full load 300

V.28, full load 54

T1IN, T2IN, T3IN, T4IN ±10
M0, M1, M2, DCE/DTE, INVERT =

GND
M0, M1, M2, DCE/DTE, INVERT =
V

CC

C C

2.0 V

-100 -50 -30

0.5 10 µA

0.8 V

±10

mA

mA

mA

mW

µA

MXL1544/MAX3175

+5V Multiprotocol, Software-Selectable

Control Transceivers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +5V, VDD= +6.8V, VEE= -5.6V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

LOGIC OUTPUTS (R1OUT, R2OUT, R3OUT, R4OUT)

Output High Voltage V

Output Low Voltage V

Output Short-Circuit Current I

Output Pullup Current I

OH

OL

SC

L

RECEIVER INPUTS

Receiver Glitch Rejection MAX3175 only 5 10 15 µs

V.11 TRANSMITTER

Open-Circuit Differential Output
Voltage

Loaded Differential Output
Voltage

Change in Magnitude of Output
Differential Voltage

Common-Mode Output Voltage V

Change in Magnitude of Output
Common-Mode Voltage

Short-Circuit Current I

Output Leakage Current I

V

V

∆V

∆V

ODO

ODL

OD

OC

OC

SC

Z

Rise or Fall Time tr, t

t

|t

PHL

t

PLH

PHL

t

PLH

Transmitter Input to Output

Data Skew

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

V.11 RECEIVER

Differential Input Voltage V

Input Hysteresis ∆V

Receiver Input Current I

Receiver Input Resistance R

TH

TH

IN

IN

Rise or Fall Time tr, t

t

|t

PHL

t

PLH

PHL

t

PLH

Receiver Input to Output

Data Skew

I

SOURCE

I

SINK

0 ≤ V

V

= 4mA 3 4.5 V

= 4mA 0.3 0.8 V

≤ V

OUT

CC

= 0, no-cable mode 70 µA

OUT

-50 50 mA

Op en ci r cui t, R = 1.95kΩ ( Fi g ur e 1) ±5V

R = 50Ω (Figure 1), TA = +25°C

0.5

V

✕

ODO

0.67
V

ODO

✕

R = 50Ω (Figure 1) ±2

R = 50Ω (Figure 1) 0.2 V

R = 50Ω (Figure 1) 3 V

R = 50Ω (Figure 1) 0.2 V

V

= GND 150 mA

OUT

-0.25V < V
cable mode

R = 50Ω (Figures 2, 5) 2 15 25 ns

f

,

R = 50Ω (Figures 2, 5) 50 75 ns

­(Figures 2, 5) 3 12 ns

|

< +0.25V, power-off or no-

OUT

±1 ±100 µA

-7V ≤ VCM ≤ 7V -200 200 mV

-7V ≤ VCM ≤ 7V 15 40 mV

-10V ≤V

-10V ≤ V

(Figures 2, 6) 15 ns

f

,

(Figures 2, 6)

­(Figures 2, 6)

|

≤ 10V ±0.66 mA

A,B

≤ 10V 15 30 kΩ

A,B

MXL1544 50 80 ns

MAX3175 10 µs

MXL1544 4 16 ns

MAX3175 1 µs

V

MXL1544/MAX3175

+5V Multiprotocol, Software-Selectable
Control Transceivers

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +5V, VDD= +6.8V, VEE= -5.6V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

V.10 TRANSMITTER

Open-Circuit Output Voltage
Swing

Output Voltage Swing V

Short-Circuit Current I

Output Leakage Current I

Rise or Fall Time tr, t

Transmitter Input to Output

V.10 RECEIVER

Differential Threshold Voltage V

Input Hysteresis ∆V

Receiver Input Current I

Receiver Input Impedance R

Rise or Fall Time tr, t

V

t

PHL

t

PLH

t

PLH

O

T

SC

Z

f

TH

TH

IN

IN

f

Receiver Input to Output

t

PHL

|t

Data Skew

PHL

t

PLH

V.28 TRANSMITTER

Output Voltage Swing V

Short-Circuit Current I

Output Leakage Current I

O

SC

Z

Output Slew Rate SR RL = 3kΩ, CL = 2500pF (Figures 3, 7) 4 30 V/µs

t

Transmitter Input to Output

PHL

t

PLH

V.28 RECEIVER

Input Low Voltage V

Input High Voltage V

Input Hysteresis V

Input Resistance R

Rise or Fall Time tr, t

IL

IH

HYS

IN

f

RL = 3.9kΩ (Figure 3) ±4 ±6V

RL = 450Ω (Figure 3) ±3.6

RL = 450Ω (Figure 3), TA = +25°C

0.9 x
V

O

VO = GND, TA = +25°C ±150 mA

-0.25V < V
or no-cable mode

RL = 450Ω, C

,

RL = 450Ω, C

< +0.25V, power-off

OUT

= 100pF (Figures 3, 7) 2 µs

L

= 100pF (Figures 3, 7) 1 µs

L

±1 ±100 µA

-250 250 mV

25 50 mV

-10V ≤ VA ≤ 10V ±0.66 mA

-10V ≤ VA ≤ 10V 15 30 kΩ

(Figures 4, 8) 15 ns

MXL1544 55 ns

( Fi g ur es 4, 8)

MAX3175 10 µs

MXL1544 109 ns

MAX3175 10 µs

­|

( Fi g ur es 4, 8)

MXL1544 60 ns

MAX3175 1 µs

Open circuit (Figure 3) ±7V

RL = 3kΩ (Figure 3) ±5 ±6V

VO = GND ±150 mA

-0.25V ≤ V
no-cable mode

RL = 3kΩ, C

≤ +0.25V, power-off or

OUT

= 2500pF (Figures 3, 7)

L

±1 ±100 µA

1.5 2.5

1.5 3

1.3 0.8 V

2.0 1.3 V

0.05 0.3 V

-15V < VIN < +15V 3 5 7 kΩ

(Figures 4, 8) 15 ns

V

µs

MXL1544/MAX3175

+5V Multiprotocol, Software-Selectable

Control Transceivers

_______________________________________________________________________________________ 5

Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +5V, VDD= +6.8V, VEE= -5.6V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)

Note 2: MXL1544/MAX3175 are designed to operate with VDDand VEEsupplied by the MXL1543 charge pump.

0.65

0.66

0.67

0.68

0.69

0.70

0.71

0.72

0.73

0 50 100 150 200 250

V.28 MODE SUPPLY CURRENT (ICC)

vs. DATA RATE

MXL1544/MAX3175 toc04

DATA RATE (kbps)

I

CC

(mA)

DCE MODE
INVERT = 0

FULL LOAD (RL = 3kΩ,
C

L

= 2500) AND NO LOAD

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

t

PLH

Receiver Input to Output

t

PHL

(Figures 4, 8)

MXL1544 60 100 ns

MAX3175 10 µs

MXL1544 70 450 ns

MAX3175 10 µs

V.11 MODE SUPPLY CURRENT (ICC)

vs. DATA RATE

120

FULL LOAD, R = 50Ω

100

80

DCE MODE
INVERT = 1

(mA)

60

CC

I

40

20

NO LOAD, R = 1.95kΩ

0

0.1 1 10 100 1000 10,000

DATA RATE (kbps)

MXL1544/MAX3175 toc01

(mA)

DD

I

V.11 MODE SUPPLY CURRENT (IDD)

vs. DATA RATE

10

DCE MODE

9

INVERT = 1

8

7

6

5

4

3

FULL, R = 50Ω

2

NO LOAD, R = 1.95kΩ

1

0

0.1 1 10 100 1000 10,000
DATA RATE (kbps)

MXL1544/MAX3175 toc02

(mA)

EE

I

V.11 MODE SUPPLY CURRENT (IEE)

vs. DATA RATE

10

DCE MODE

9

INVERT = 1

8

7

6

5

4

FULL, R = 50Ω

3

NO LOAD, R = 1.95kΩ

2

1

0

0.1 1 10 100 1000 10,000
DATA RATE (kbps)

MXL1544/MAX3175 toc03

-300

-100

-200

100

0

200

300

-10 0-5 5 10

V.11 RECEIVER INPUT CURRENT

vs. INPUT VOLTAGE

MXL1544/MAX3175 toc10

INPUT VOLTAGE (V)

INPUT CURRENT (µA)

MXL1544/MAX3175

+5V Multiprotocol, Software-Selectable
Control Transceivers

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(TA = +25°C, unless otherwise noted.)

V.28 MODE SUPPLY CURRENT (IDD)

vs. DATA RATE

MXL1544/MAX3175 toc05

DATA RATE (kbps)

I

DD

(mA)

0

5

15

10

20

25

010050 150 200 250

DCE MODE
INVERT = 0

NO LOAD

FULL LOAD, RL = 3k

Ω,

CL = 2500pF

0

10

5

20

15

30

25

35

010050 150 200 250

V.28 MODE SUPPLY CURRENT (IEE)

vs. DATA RATE

MXL1544/MAX3175 toc06

DATA RATE (kbps)

I

EE

(mA)

DCE MODE
INVERT = 0

FULL LOAD, RL = 3kΩ,
C

L

= 2500pF

NO LOAD

-5

-2

-3

-4

0

-1

4

3

2

1

5

0 10203040506070

V.11 LOADED DIFFERENTIAL OUTPUT

VOLTAGE vs. TEMPERATURE

MXL1544/MAX3175 toc07

TEMPERATURE (°C)

DIFFERENTIAL OUTPUT VOLTAGE (V)

DCE MODE
INVERT = 1
R

L

= 50Ω

V

OUT+

V

OUT-

-10

-4

-6

-8

0

-2

8

6

4

2

10

0 10203040506070

V.28 LOADED OUTPUT VOLTAGE

vs. TEMPERATURE

MXL1544/MAX3175 toc09

TEMPERATURE (°C)

OUTPUT VOLTAGE (V)

DCE MODE
R

L

= 3kΩ

V

OUT-

V

OUT+

-10

-4

-6

-8

0

-2

8

6

4

2

10

0 10203040506070

V.10 LOADED OUTPUT VOLTAGE

vs. TEMPERATURE

MXL1544/MAX3175 toc08

TEMPERATURE (°C)

OUTPUT VOLTAGE (V)

V

OUT+

V

OUT-

DCE MODE
R

L

= 450Ω