SN65LBC174A, SN75LBC174A

QUADRUPLE RS485 DIFFERENTIAL LINE DRIVERS

SLLS446C − OCTOBER 2000 − REVISED MAY 2003

2

POST OFFICE BOX 655303

description (continued)

Each driver features current limiting and thermal-shutdown circuitry making it suitable for high-speed multipoint

applications in noisy environments. These devices are designed using LinBiCMOS

t, facilitating low power

consumption and robustness.

The two EN inputs provide pair-wise driver enabling, or can be externally tied together to provide enable control

of all four drivers with one signal. When disabled or powered off, the driver outputs present a high-impedance

to the bus for reduced system loading.

The SN75LBC174A is characterized for operation over the temperature range of 0

°C to 70°C. The

SN65LBC174A is characterized for operation over the temperature range of −40

°C to 85°C.

AVAILABLE OPTIONS

PACKAGE

TA

16-PIN PLASTIC

SMALL OUTLINE†

(JEDEC MS-013)

20-PIN PLASTIC

SMALL OUTLINE†

(JEDEC MS-013)

16-PIN PLASTIC

THROUGH-HOLE

(JEDEC MS-001)

0

°C to 70°C

SN75LBC174A16DW

SN75LBC174ADW

SN75LBC174AN

0

°C to 70°C

Marked as 75LBC174A

−40

°C to 85°C

SN65LBC174A16DW

SN65LBC174ADW

SN65LBC174AN

−40

°C to 85°C

Marked as 65LBC174A

† Add R suffix for taped and reeled version.

FUNCTION TABLE

(EACH DRIVER)

INPUT

ENABLE

OUTPUTS

A

G

Y

Z

L

H

L

H

H

H

H

L

OPEN

H

H

L

L

OPEN

L

H

H

OPEN

H

L

OPEN

OPEN

H

L

X

L

Z

Z

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

Z = high impedance (off)

LinBiCMOS is a trademark of Texas Instruments.