SN55ALS161, SN75ALS161 OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS

SLLS019D - JUNE 1986 - REVISED MAY 1995

features

SUITABLE FOR IEEE STANDARD 488-1978 (GPIB)

8-Channel Bidirectional Transceiver
Designed to Implement Control Bus Interface
Designed for Single Controller
High-Speed Advanced Low-Power Schottky Circuitry
Low Power Dissipation: SN55ALS161 . . . 59 mW Max Per Channel SN75ALS161 . . . 46 mW Max Per Channel
Fast Propagation Times: SN55ALS161 . . . 25 ns Max SN75ALS161 . . . 20 ns Max
High-impedance pnp Inputs
Receiver Hysteresis: SN55ALS161 . . . 550 mV Typ SN75ALS161 . . . 650 mV Typ
Bus-Terminating Resistors Provided on Driver Outputs
No Loading of Bus When Device Is Powered Down (V_CC = 0)
Power-Up/Power-Down Protection (Glitch Free)

description

The SN55ALS161 and SN75ALS161 eight-channel general-purpose interface bus transceivers are monolithic, 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 SN55ALS160 and SN75ALS160 octal bus transceivers, the 'ALS161 provides the complete 16-wire interface for the IEEE 488 bus.

The SN55ALS161 and SN75ALS161 feature 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 DC and TE enable 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 V_CC = 0. The drivers are designed to handle loads up to 48 mA of sink current. Each receiver features pnp transistor inputs for high input impedance and hysteresis of 400 mV on the commercial part, 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 SN55ALS161 is characterized for operation from -55°C to 125°C. The SN75ALS161 is characterized for operation from 0°C to 70°C.

Title: OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS
Product Family: TRANSMITTERS AND RECEIVERS
Device Functionality: TRANSMITTERS/RECEIVERS
Orderable Devices: SNJ55ALS161FK, SNJ55ALS161J, SNJ55ALS161W, SN75ALS161DW, SN75ALS161DWR, SN75ALS161N

View the complete PDF datasheet: slls019d.pdf (238 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:SN55ALS161, SN75ALS161

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