SN75ALS161

ACTIVE

Octal General-Purpose Interface Bus Transceiver

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Product details

Parameters

Operating temperature range (C) 0 to 70 open-in-new Find other Other interfaces

Package | Pins | Size

PDIP (N) 20 229 mm² 24.33 x 9.4 SOIC (DW) 20 132 mm² 12.8 x 10.3 open-in-new Find other Other interfaces

Features

  • Suitable for IEEE Standard 488-1978 (GPIB)
  • 8-Channel Bidirectional Transceivers
  • Designed to Implement Control Bus Interface
  • Designed for Single Controller
  • High-Speed Advanced Low-Power Schottky Circuitry
  • Low Power Dissipation . . . 46 mW Max Per Channel
  • Fast Propagation Times . . . 20 ns Max
  • High-Impedance pnp Inputs
  • Receiver Hysteresis . . . 650 mV Typ
  • Bus-Terminating Resistors Provided on Driver Outputs
  • No Loading of Bus When Device Is Powered Down (VCC = 0)
  • Power-Up/Power-Down Protection (Glitch Free)

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Description

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 circuits designed to provide a high impedance to the bus when VCC = 0. The drivers are designed to handle 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.

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Technical documentation

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Type Title Date
* Datasheet SN75ALS161 datasheet (Rev. F) Jul. 23, 2004
Technical articles Small doesn’t mean you compromise performance when implementing signal isolation May 25, 2017
Technical articles Upgrading the standard: a better way to drive peripherals Jun. 20, 2014
Technical articles How Thunderbolt™ 2 enables 4k video resolution Apr. 03, 2014
Technical articles Going for distance or going for speed on the RS-485 bus? Mar. 05, 2014

Design & development

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Design tools & simulation

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CAD/CAE symbols

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PDIP (N) 20 View options
SOIC (DW) 20 View options

Ordering & quality

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