DESCRIPTION
The P93U422 is a 1,024-bit high-speed Static RAM with a 256 x 4 organization. The P93U422 is a universal device designed to replace the entire 93 and 93L 256 x 4 static RAM families. The memory requires no clocks or refreshing and has equal access and cycle times. Inputs and outputs are fully TTL compatible.

FEATURES
■ Universal 256 x 4 Static RAM
■ One part, the 93U422, replaces the following bipolar and CMOS parts:
    – 93422A
    – 93422
    – 93L422A
    – 93L422
■ Fast Access Time
    – 35 ns (Commercial)
    – 35 ns (Military)
■ Standard 400 mil DIP and Chip carrier packages
■ CMOS for Low Power
    – 440 mW (Commercial)
    – 495 mW (Military)
■ 5V Power Supply ±10% for both commercial and military temperature ranges
■ Separate I/O
■ Fully static operation with equal access and cycle times
■ Resistant to single event upset and latchup due to advanced process and design improvements