DESCRIPTION
The P4C422 is a 1,024-bit high-speed (10ns) Static RAM with a 256 x 4 organization. The memory requires no clocks or refreshing and has equal access and cycle times. Inputs and outputs are fully TTL compatible. Operation is from a single 5 Volt supply. Easy memory expansion is provided by an active LOW chip select one(CS1) and active HIGH chip select two (CS2) as well as 3-state outputs.

FEATURES
High Speed (Equal Access and Cycle Times)
  – 10/12/15/20/25/35 ns (Commercial)
  – 15/20/25/35 ns (Military)
CMOS for Low Power
  – 495 mW Max. – 10/12/15/20/25 (Commercial)
  – 495 mW Max. – 15/20/25/35 (Military)
Single 5V±10% Power Supply"
Separate I/O
Fully TTL Compatible Inputs and Outputs
Resistant to single event upset and latchup resulting from advanced process and design improvements
Standard 22-pin 400 mil DIP, 24-pin 300 mil SOIC, 24-pin square LCC package and 24-pin CERPACK package