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INS8253 Datasheet Programmable Interval Timer

Manufacturer: National Semiconductor (now Texas Instruments)

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General Description

The INS8253 is a programmable timer/counter device contained in a standard, 24-pin dual-in-line package.

The chip, which is fabricated using N-channel silicon gate technology, provides counting or time-out services in a microcomputer system.

The various operating modes and other functional characteristics of thelNS8253 are programmed by the system software.

Overview

~National ~ Semiconductor Preliminary JULY 1978 INS8253 Programmable Interval Timer General.

Key Features

  • 3 Individually Programmable 16-Bit Counters.
  • 6 Operating Modes.
  • DC to 2MHz Count Rates.
  • Individual Count Rate and Modulus for Each Counter.
  • Selectable Counting System (Binary or BCD) for Each Counter.
  • TRI-STATE@ TTL Drive Capability for Bidirectional Data Bus.
  • Single + 5 Volt Power Supply.
  • 24-Pin Dual-in-Line Package.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
INS8250 Asynchronous Receiver/Transmitter
INS8250-B Asynchronous Receiver/Transmitter
INS8250A UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER
INS8251 Programmable Communication Interface
INS8254 N-Channel Bit Programmable Peripherallnterface
INS8255 Programmable Peripheral Interface
INS8255N Programmable Peripheral Interface
INS8257 Programmable DMA Controller
INS8259 Programmable Interrupt Controller
INS8202 Octal Buffers