P4C422

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 P4C422 HIGH SPEED 256 X 4 STATIC CMOS RAM Fully TTL Compatible Inputs and Outputs Resistant to single event upset and latchup resulting from advanced process and design improvements. Standard Pinout (JEDEC Approved) – 22-Pin 400 mil DIP – 24-Pin 300 mil SOIC – 24-Pin Square LCC – 24-Pin CERPACK 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-sta...