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DS8640 Datasheet Quad NOR Unified Bus Receiver

Manufacturer: National Semiconductor (now Texas Instruments)

Download the DS8640 datasheet PDF. This datasheet also includes the DS8640N variant, as both parts are published together in a single manufacturer document.

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Note: The manufacturer provides a single datasheet file (DS8640N_NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.

General Description

The DS7640 and DS8640 are quad 2-input receivers designed for use in bus organized data transmission systems interconnected by terminated 120X impedance lines The external termination is intended to be 180X resistor from the bus to the a5V logic supply together with a 390X resistor from the bus to ground The design employs a built-in input threshold providing substantial noise immunity Low input current allows up to 27 driver receiver pairs to utilize a common bus

Overview

DS7640 DS8640 Quad NOR Unified Bus Receiver February 1996 DS7640 DS8640 Quad NOR Unified Bus Receiver.

Key Features

  • Y Low input current with normal VCC or VCC e 0V (30 mA typ) Y High noise immunity (1 1V typ) Y Temperature-insensitive input thresholds track bus logic levels Y TTL compatible output Y Matched optimized noise immunity for ‘‘1’’ and ‘‘0’’ levels Y High speed (19 ns typ) Connection Diagram Dual-In-Line Package Typical.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
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