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INS8238 Datasheet System Controller and Bus Driver

Manufacturer: National Semiconductor (now Texas Instruments)

Download the INS8238 datasheet PDF. This datasheet also includes the INS8228 variant, as both parts are published together in a single manufacturer document.

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Note: The manufacturer provides a single datasheet file (INS8228-NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.

General Description

The INS8228/INS8238 is a system controller/bus driver contained in a standard, 28-pin dual-in-line package.

The chip, which is fabricated using Schottky Bipolar technology, generates all the read and write control signals required to directly interface the memory and input/output components of National Semiconductor's INS8080A microcomputer family.

The chip also provides drive and isolation for the bidirectional data bus of the INS8080A microprocessor.

Overview

~National ~ Semiconductor APRIL 1978 INS8228/1NS8238 System Controller and Bus Driver.

Key Features

  • MICROBUSlM.
  • Compatible.
  • Single Chip System' Controller and Bus Driver for 1NS8080A Microcomputer Systems.
  • Allows Use of Multibyte CALL Instructions for Interrupt Acknowledge.
  • Provides User-Selected Single-Level Interrupt Vector (RST7).
  • Provides Isolation for Data Bus.
  • Supports a Wide Variety of System Bus Structures.
  • Reduces System Component Count.
  • INS8238 Provides Advanced Input/Output Write and Memory Write Control Si.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
INS8202 Octal Buffers
INS8203 Octal Buffers
INS8208 8-Bit Bidirectional Transceiver
INS8212 8-Bit Input/Output Port
INS8216 4-Bit Bidirectional Bus Transceivers
INS8224 Clock Generator and Driver
INS8226 4-Bit Bidirectional Bus Transceivers
INS8228 System Controller and Bus Driver
INS8243 Input / Output Expander
INS8250 Asynchronous Receiver/Transmitter