+5V Multiprotocol, Software-Selectable

Control Transceivers

8

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Pin Description

PIN

NAME

FUNCTION

+5V Supply Voltage (

±5%). Bypass with a 1µF capacitor to ground.

Positive Supply Generated by MXL1543. Bypass with a 1µF capacitor to ground.

3

T1IN

Transmitter 1 TTL-Compatible Input

4

T2IN

Transmitter 2 TTL-Compatible Input

5

T3IN

Transmitter 3 TTL-Compatible Input

6

R1OUT

Receiver 1 CMOS Output

7

R2OUT

Receiver 2 CMOS Output

8

R3OUT

Receiver 3 CMOS Output

9

T4IN

Transmitter 4 TTL-Compatible Input

10

R4OUT

Receiver 4 CMOS Output

11

M0

12

M1

13

M2

14

DCE/

DTE

15

INVERT

16

T4OUTA/R4INA

Transmitter Output/Inverting Receiver Input

17

R3INB

Noninverting Receiver Input

18

R3INA

Inverting Receiver Input

19

R2INB

Noninverting Receiver Input

20

R2INA

Inverting Receiver Input

21

T3OUTB/R1INB

Noninverting Transmitter Output/Noninverting Receiver Input

22

T3OUTA/R1INA

Inverting Transmitter Output/Inverting Receiver Input

23

T2OUTB

Noninverting Transmitter Output

24

T2OUTA

Inverting Transmitter Output

25

T1OUTB

Noninverting Transmitter Output

26

T1OUTA

Inverting Transmitter Output

27

GND

Ground

28

Negative Supply Generated by MXL1543. Bypass with a 1µF capacitor to ground.