IC 8259 Programmable Interrupt Controller DIP 28-pin

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  • Jameco Part no.: 52775
  • Manufacturer: Major Brands
  • Manufacturer no.: 8259
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Programmable Interrupt Controller 8259 DIP-28

The Intel 8259A Programmable Interrupt Controller handles up to eight vectored priority interrupts for the CPU. It is cascadable for up to 64 vectored priority interrupts without additional circuitry and is packaged in a 28-pin DIP, uses NMOS technology and requires a single +5V supply. Circuitry is static, requiring no clock input.

The 8259A is designed to minimize the software and real time overhead in handling multi-level priority interrupts and has several modes, permitting optimization for a variety of system requirements.

The 8259A is fully upward compatible with the Intel 8259. Software originally written for the 8259 will operate the 8259A in all 8259 equivalent modes (MCS-80/85, Non-Buffered, Edge Triggered).


  • 8086, 8088 compatible
  • MCS-80, MCS-85 compatible
  • Eight-level priority controller
  • Expandable to 64 levels
  • Programmable interrupt modes
  • Individual request mask capability
  • Single +5V supply (no clocks)
  • Available in DIP-28 package

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