AM26LS32Ax, AM26LS33Ax Quadruple Differential Line Receivers

1 Features

• AM26LS32A Devices meet or exceed the

requirements of ANSI TIA/EIA-422-B, TIA/

EIA-423-B, and ITU recommendations V.10 and

V.11

• AM26LS32A Devices have ±7-V Common-mode

range with ±200-mV sensitivity

• AM26LS33A Devices have ±15-V common-mode

range with ±500-mV sensitivity

• Input hysteresis 50 mV typical

• Operate from a single 5-V supply

• Low-power Schottky circuitry

• 3-State outputs

• Complementary output-enable inputs

• Input impedance 12 kΩ minimum

• Open input fail-safe

2 Applications

• High-reliability automotive applications

• Factory automation

• ATM and cash counters

• Smart grids

• AC and servo motor drives

4

12

2

1

3

6

7

5

10

9

11

14

15

13

G

G

1A

1B

2A

2B

3A

3B

4A

4B

1Y

2Y

3Y

4Y

Copyright © 2016, Texas Instruments Incorporated

Pin numbers are for D, N, NS, or PW packages only.

Logic Diagram (Positive Logic)

3 Description

The AM26LS32Ax and AM26LS33Ax devices are

quadruple differential line receivers for balanced and

unbalanced digital data transmission. The enable

function is common to all four receivers and offers a

choice of active-high or active-low input. The 3-state

outputs permit connection directly to a bus-organized

system. When the inputs are open, the fail-safe

design makes sure the outputs always are high.

Compared to the AM26LS32 and the AM26LS33,

the AM26LS32A and AM26LS33A incorporate an

additional stage of amplification to improve sensitivity.

The input impedance has been increased, resulting in

less loading of the bus line. The additional stage has

increased propagation delay; however, this does not

affect interchangeability in most applications.

The

AM26LS32AC

and

AM26LS33AC

are

characterized for operation from 0°C to 70°C. The

AM26LS32AI is characterized for operation from –

40°C to 85°C. The AM26LS32AM and AM26LS33AM

are characterized for operation over the full military

temperature range of –55°C to 125°C.

Package Information

PART NUMBER

PACKAGE(1)

PACKAGE SIZE(2)

AM26LS3xAC

AM26LS32AI

PDIP (16)

19.3 mm × 9.4 mm

SOIC (16)

9.9 mm × 6 mm

AM26LS32AC

SO (16)

10.2 mm × 7.8 mm

TSSOP (16)

5. mm × 6.4 mm

AM26LS3xAM

CDIP (16)

19.56 mm × 6.92 mm

LCCC (20)

8.9 mm × 8.9 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

(2)

The package size (length × width) is a nominal value and

includes pins, where applicable.

AM26LS32AC, AM26LS32AI, AM26LS32AM

AM26LS33AC, AM26LS33AM

SLLS115G – OCTOBER 1980 – REVISED AUGUST 2023

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.