±10kV ESD-Protected, Quad 5V RS-485/RS-422

Transmitters

6

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Pin Description

PIN

MAX3040/MAX3041/

MAX3042B

MAX3043/MAX3044/

MAX3045B

NAME

FUNCTION

1

1

T1IN

Transmitter 1 Input

2

2

Y1

Noninverting Transmitter 1 Output

3

3

Z1

Inverting Transmitter 1 Output

—

4EN

Transmitter Enable High Input. Drive EN high to enable all four

transmitters. When EN is low and EN is high, all transmitters are

disabled and the part enters a low-power shutdown state. The

transmitter outputs are high impedance when disabled.

4

—

EN12

Transmitter Enable Input to Control Transmitters 1 and 2. Drive EN12

high to enable transmitters 1 and 2. Drive EN12 low to disable

transmitters 1 and 2. The transmitter outputs are high impedance

when disabled. The part enters a low-power shutdown state when

both EN12 and EN34 are low.

5

5

Z2

Inverting Transmitter 2 Output

6

6

Y2

Noninverting Transmitter 2 Output

7

7

T2IN

Transmitter 2 Input

8

8

GND

Ground

9

9

T3IN

Transmitter 3 Input

10

10

Y3

Noninverting Transmitter 3 Output

11

11

Z3

Inverting Transmitter 3 Output

—

12

EN

Transmitter Enable Low Input. Drive EN low to enable all four

transmitters. When EN is low and EN is high, all transmitters are

disabled and the part enters a low-power shutdown state. The

transmitter outputs are high impedance when disabled.

12

—

EN34

Transmitter Enable Input to Control Transmitters 3 and 4. Drive EN34

high to enable transmitters 3 and 4. Drive EN34 low to disable

transmitters 3 and 4. The transmitter outputs are high impedance

when disabled. The part enters a low-power shutdown state when

both EN12 and EN34 are low.

13

13

Z4

Inverting Transmitter 4 Output

14

14

Y4

Noninverting Transmitter 4 Output

15

15

T4IN

Transmitter 4 Input

16

16

Positive Supply. Bypass with a 0.1µF capacitor to GND.