MXL1543CAI+ Datasheet MXL1543CAI+, MXL1543CAI+T | P1-P3

General Description

The MXL1543 is a three-driver/three-receiver multipro-

tocol transceiver that operates from a +5V single sup-

ply. The MXL1543, along with the MXL1544/MAX3175

and the MXL1344A, form a complete software-selec-

table data terminal equipment (DTE) or data communi-

cation 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), and V.35 protocols. The MXL1543 trans-

ceivers carry the high-speed clock and data signals

while the MXL1544/MAX3175 carry the control signals.

The MXL1543 can be terminated by the MXL1344A

software-selectable resistor termination network or by

discrete termination networks.

An internal charge pump and a proprietary low-dropout

transmitter output stage allow V.11- , V.28- , and V.35-

compliant operation from a +5V single supply. A no-

cable mode is entered when all mode pins (M0, M1,

and M2) are pulled high or left unconnected. In no-

cable mode, supply current decreases to 0.5µA and all

transmitter and receiver outputs are disabled (high

impedance). Short-circuit current limiting and thermal

shutdown circuitry protect the drivers against excessive

power dissipation.

Applications

Features

♦ MXL1543, MXL1544/MAX3175, and MXL1344A

Chipset Is Pin Compatible with LTC1543,

LTC1544, and LTC1344A

♦ Supports RS-232, RS-449, EIA-530, EIA-530A,

V.35, V.36, and X.21

♦ Software-Selectable Cable Termination Using the

MXL1344A

♦ Complete DTE or DCE Port with MXL1544/

MAX3175, and MXL1344A

♦ +5V Single-Supply Operation

♦ 0.5µA No-Cable Mode

♦ TUV-Certified NET1/NET2 and TBR1/TBR2-

Compliant

MXL1543

+5V Multiprotocol, 3Tx/3Rx, Software-

Selectable Clock/Data Transceivers

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-1929; Rev 1; 9/01

PART TEMP. RANGE PIN-PACKAGE

MXL1543CAI 0° to +70°C 28 SSOP

Data Networking

CSU and DSU

Data Routers

PCI Cards

Telecommunications

Equipment

Typical Operating Circuit

D1D2

D3D4

R2R3

MXL1543

RXD RXC TXDTXC SCTE

D1D2

R2R3

MXL1544

MAX3175

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

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

MXL1344A

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.

MXL1543

+5V Multiprotocol, 3Tx/3Rx, Software-

Selectable Clock/Data Transceivers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= +5.0V, C1 = C2 = C4 = 1µF, C3 = C5 = 4.7µF, (Figure 10), T

= T

MIN

to T

MAX

. Typical values are at T

= +25°C, unless oth-

erwise noted.)

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 Referenced to GND Unless Otherwise Noted.

Supply Voltages

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

....................................................................-0.3V to +7.3V

.....................................................................+0.3V to -6.5V

to V

(Note 1)................................................................13V

Logic Input Voltages

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

Logic Output Voltages

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

+ 0.3V)

Transmitter Outputs

T_OUT_, T3OUT_/R1IN_.....................................-15V to +15V

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

Receiver Input

R_IN_T3OUT_/R1IN_ ..........................................-15V to +15V

Continuous Power Dissipation (T

= +70°C)

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

Operating Temperature Range

MXL1543CAI .......................................................0°C to 70°C

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

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

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DC CHARACTERISTICS

Operating Range V

4.75 5.25 V

RS-530, RS-530A, X.21, no load 13

RS-530, RS-530A, X.21, full load 100 130

V.35 mode, no load 20

V.35 mode, full load 126 170

V.28 mode, no load 20

V.28 mode, full load 40 75

Supply Current

(DCE Mode)

(Digital Inputs = GND or

)

(Transmitter Outputs Static)

No-cable mode 0.5 10 µA

RS-530, RS-530A, X.21, full load 230

V.35 mode, full load 600

Internal Power Dissipation

(DCE Mode)

V.28 mode, full load 140

Any mode (except no-cable mode), no load 6.4 6.8

V.28 mode, with load 6.4 6.8

Positive Charge-Pump

Output Voltage

V.28, V.35 modes, with load, I

= 10mA 6.4 6.8

V.28, V.35, no load -5.6

V.28 mode, full load -5.6 -5.4

V.35 mode, full load -5.6 -5.4

Negative Charge-Pump

Output Voltage

RS-530, RS-530A, X.21, full load -5.6 -5.4

Supply Rise Time t

No-cable mode or power-up to turn on 500 µs

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

Input High Voltage V

2.0

Input Low Voltage V

0.8

T1IN, T2IN, T3IN ±10

M0, M1, M2, DCE/DTE = GND -100 -50 -30

Logic Input Current I

M0, M1, M2, DCE/DTE = V

±10

µA

Note 1: V

and V

absolute difference cannot exceed 13V.

MXL1543

+5V Multiprotocol, 3Tx/3Rx, Software-

Selectable Clock/Data Transceivers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

= +5.0V, C1 = C2 = C4 = 1µF, C3 = C5 = 4.7µF, (Figure 10), T

= T

MIN

to T

MAX

. Typical values are at T

= +25°C, unless oth-

erwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

LOGIC OUTPUTS (R1OUT, R2OUT, R3OUT)

Output High Voltage V

SOURCE

= 4mA 3 4.5

Output Low Voltage V

SINK

= 4mA 0.3 0.8

Output Short-Circuit Current I

0 ≤ V

OUT

≤ V

±50 mA

Output Pullup Current I

OUT

= 0, no-cable mode 70 µA

V.11 TRANSMITTER

Open-Circuit Differential Output

Voltage

ODO

Open circuit, R = 1.95kΩ (Figure 1) ±5V

R = 50Ω (Figure 1), T

= +25

0.5

ODO

0.67

ODO

Loaded Differential Output

Voltage

ODL

R = 50Ω (Figure 1) ±2

Change in Magnitude of Output

Differential Voltage

∆V

R = 50Ω (Figure 1) 0.2 V

Common-Mode Output Voltage V

R = 50Ω (Figure 1) 3.0 V

Change in Magnitude of Output

Common-Mode Voltage

∆V

R = 50Ω (Figure 1) 0.2 V

Short-Circuit Current I

OUT

= GND 150 mA

Output Leakage Current I

-0.25V ≤ V

OUT

≤ +0.25V, power-off or

no-cable mode

±1 ±100 µA

Rise or Fall Time t

(Figures 2, 6) 2 10 25 ns

Transmitter Input to Output

Delay

PHL

PLH

(Figures 2, 6) 40 80 ns

Data Skew It

PHL

- t

PLH

I (Figures 2, 6) 3 12 ns

Output to Output Skew t

SKEW

(Figures 2, 6) 3 ns

V.11 RECEIVER

Differential Threshold Voltage V

-7V ≤ V

≤ 7V -200 200 mV

Input Hysteresis ∆V

-7V ≤ V

≤ 7V 15 40 mV

Receiver Input Current I

-10V ≤ V

≤10V ±0.66 mA

Receiver Input Resistance R

-10V ≤ V

≤ 10V 15 30 kΩ

Rise or Fall Time t

(Figures 2, 7) 15 ns

Receiver Input to Output Delay t

PHL

PLH

(Figures 2, 7) 50 80 ns

Data Skew |t

PHL

- t

PLH

| (Figures 2, 7) 4 16 ns

V.35 TRANSMITTER

Open circuit (Figure 3) ±7

Differential Output Voltage V

With load, -4V ≤ V

≤ 4V (Figure 3) ±0.44 ±0.55 ±0.66

Output High Current I

A,B

= 0 -13 -11 -9 mA

Output Low Current I

A,B

= 0 9 11 13 mA

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18

MXL1543CAI+

Mfr. #:

Buy MXL1543CAI+

Manufacturer:

Maxim Integrated

Description:

Interface - Specialized 5V Multiptcl 3Tx/3Rx Clock/Data Tcvr

Lifecycle:

New from this manufacturer.

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MXL1543CAI+

MXL1543CAI+

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