Description
The Intersil HS-82C55ARH is a high performance, radiation hardened CMOS version of the industry standard 8255A and is manufactured using a hardened field, self-aligned silicongate CMOS process. It is a general purpose programmable I/O device which may be used with many different microprocessors.

FEATUREs
• Radiation Hardened
    - Total Dose >105 RAD (Si)
    - Transient Upset <108 RAD (Si)/s
    - Latch Up Free EPI-CMOS
• Low Power Consumption
    - IDDSB = 20µA
• Pin Compatible with NMOS 8255A and the Intersil 82C55A
• High Speed, No “Wait State” Operation with 5MHz HS-80C86RH
• 24 Programmable I/O Pins
• Bus-Hold Circuitry on All I/O Ports Eliminates Pull-Up Resistors
• Direct Bit Set/Reset Capability
• Enhanced Control Word Read Capability
• Hardened Field, Self-Aligned, Junction Isolated CMOS Process
• Single 5V Supply
• 2.0mA Drive Capability on All I/O Port Outputs
• Military Temperature Range: -55oC to +125oC