DESCRIPTION (CONTINUED)

SN55LBC180

SN65LBC180

SN75LBC180

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

The SN55LBC180, SN65LBC180 and SN75LBC180 combine a differential line driver and receiver with 3-state

outputs and operate from a single 5-V supply. The driver and receiver have active-high and active-low enables,

respectively, which can be externally connected to function as a direction control. The driver differential outputs

and the receiver differential inputs are connected to separate terminals for full-duplex operation and are designed

common-mode voltage range making them suitable for point-to-point or multipoint data-bus applications.

The devices also provide positive and negative output-current limiting and thermal shutdown for protection from

line fault conditions. The line driver shuts down at a junction temperature of approximately 172°C.

The SN75LBC180 is characterized for operation over the commercial temperature range of 0°C to 70°C. The

SN65LBC180 is characterized over the industrial temperature range of –40°C to 85°C.

The SN55LBC180 is characterized for operation over the military temperature range of –55°C to 125°C.

DRIVER

INPUT

ENABLE

OUTPUTS

D

DE

Y

Z

H

H

H

L

L

H

L

H

X

L

Z

Z

RECEIVER

DIFFERENTIAL INPUTS

ENABLE

OUTPUT

A–B

RE

R

L

H

L

?

L

L

X

H

Z

Open circuit

L

H

(1)

H = high level, L = low level, ? = Indeterminate, X = irrelevant,

Z = high impedance (off)

2

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Product Folder Link(s): SN55LBC180 SN65LBC180 SN75LBC180