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P93U422 Datasheet

  • P93U422

  • HIGH SPEED 256 x 4 STATIC CMOS RAM

  • 10頁

  • PYRAMID

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P93U422
HIGH SPEED 256 x 4
STATIC CMOS RAM
FEATURES
Universal 256 x 4 Static RAM
One part, the P93U422, replaces the following
bipolar and CMOS parts:
鈥?93422, 93422A
鈥?93L422, 93L422A
Fast Access Time 鈥?35 ns Commercial and
Military
Available in the following packages:
鈥?PDIP, CERDIP, Side Brazed DIP
鈥?CERPACK
鈥?LCC
鈥?SOIC
CMOS for Low Power
鈥?440 mW (Commercial)
鈥?495 mW (Military)
5V Power Supply 鹵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
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. Operation
is from a single 5 Volt supply. Easy memory expansion
is provided by an active LOW chip select one (CS
1
) and
active HIGH chip select two (CS
2
) as well as 3-state
outputs.
In addition to high performance, the device features latch-
up protection, single event and upset protection. The
P93U422 is offered in several packages: 22-pin 400 mil
DIP (plastic and ceramic), 24-pin 300 mil SOIC, 24-pin
square LCC and 24-pin CERPACK. Devices are offered
in both commercial and military temperature ranges.
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATIONS
SOIC (S4)
CERPACK (F3)
DIP (P3-1, C3-1, D3-1)
LCC (L4)
Document #
SRAM102
REV A
1
Revised October 2005

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