SN75ALS161

OCTAL GENERALPURPOSE INTERFACE BUS TRANSCEIVERS

SLLS019F − JUNE 1986 − REVISED JULY 2004

1

POST OFFICE BOX 655303

Interface

Circuitry

Channel

Driver Outputs

(Glitch Free)

description/ordering information

The

SN75ALS161

eight-channel

general-purpose interface bus transceivers are

high-speed,

advanced

low-power

Schottky-process devices designed to provide the

bus-management and data-transfer signals between operating units of a single-controller instrumentation

system. When combined with the SN75ALS160 octal bus transceivers, this device provides a complete 16-wire

interface for the IEEE 488 bus.

The SN75ALS161 device features eight driver-receiver pairs connected in a front-to-back configuration to form

input/output (I/O) ports at both the bus and terminal sides. The direction of data through these driver-receiver

pairs is determined by the direction-control (DC) and talk-enable (TE) signals.

The driver outputs general-purpose interface bus (GPIB I/O ports) feature active bus-terminating resistor

sink-current loads up to 48 mA. Each receiver features pnp transistor inputs for high input impedance and

hysteresis of 400 mV on the commercial part, and 250 mV on the military part, minimum, for increased noise

immunity. All receivers have 3-state outputs, to present a high impedance to the terminal when disabled.

The SN75ALS161 is characterized for operation from 0

°C to 70°C.

ORDERING INFORMATION

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP (N)

Tube of 20

SN75ALS161N

SN75ALS161N

0

°C to 70°C

SOIC (DW)

Tube of 25

SN75ALS161DW

75ALS161

0 C to 70 C

SOIC (DW)

Reel of 2000

SN75ALS161DWR

75ALS161

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design

guidelines are available at www.ti.com/sc/package.

Copyright

 2004, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

TE

REN

IFC

NDAC

NRFD

DAV

EOI

ATN

SRQ

GND

REN

IFC

NDAC

NRFD

DAV

EOI

ATN

SRQ

DC

GPIB

I/O Ports

Terminal

I/O Ports

NAME

CLASS

IDENTITY

DC

TE

ATN

SRQ

REN

IFC

EOI

DAV

NDAC

NRFD

CHANNEL-IDENTIFICATION TABLE

Direction Control

Talk Enable

Attention

Service Request

Remote Enable

Interface Clear

End or Identify

Data Valid

Not Data Accepted

Not Ready for Data

Control

Bus

Management

Data

Transfer

DW OR N PACKAGE

(TOP VIEW)