LTC2856-1/LTC2856-2

LTC2857-1/LTC2857-2

LTC2858-1/LTC2858-2

10

285678fe

PIN FUNCTIONS

PIN NAME

PIN NUMBER

DESCRIPTION

LTC2856-1

LTC2856-2

LTC2857-1

LTC2857-2

LTC2858-1

LTC2858-2

RO

1

2

1

Receiver Output. If the receiver output is enabled (RE low) and A > B by 200mV,

then RO will be high. If A < B by 200mV, then RO will be low. If the receiver

inputs are open, shorted or terminated without a valid signal, RO will be high.

RE

2

2

Receiver Enable. A low enables the receiver. A high input forces the receiver

output into a high impedance state.

DE

3

3

Driver Enable. A high on DE enables the driver. A low input will force the driver

outputs into a high impedance. If RE is high with DE low, the part will enter a

low power shutdown state.

DI

4

3

4

Driver Input. If the driver outputs are enabled (DE high), then a low on DI forces

the driver positive output low and negative output high. A high on DI, with

the driver outputs enabled, forces the driver positive output high and negative

output low.

GND

5/9*

4/9*

5/11*

Ground. *The Exposed Pad on the DFN packages should be connected to

ground.

Y

5

6

Noninverting Driver Output for the LTC2857-1, LTC2857-2, LTC2858-1 and

LTC2858-2. High impedance when the driver is disabled (LTC2858-1) or

unpowered.

Z

6

7

Inverting Driver Output for the LTC2857-1, LTC2857-2, LTC2858-1 and

LTC2858-2. High impedance when the driver is disabled (LTC2858-1) or

unpowered.

B

7

7

8

Inverting Receiver Input (and Inverting Driver Output for the LTC2856-1 and

LTC2856-2). Impedance is > 96k

Ω in receive mode or unpowered.

A

6

8

9

Noninverting Receiver Input (and Noninverting Driver Output for the LTC2856-1

and LTC2856-2). Impedance is > 96k

Ω in receive mode or unpowered.

8

1

10