CMOS Static RAM
256K (32K x 8-Bit)
Features
x
x
x
x
x
x
x
x
IDT71256SA
Description
32K x 8 advanced high-speed CMOS static RAM
Commercial (0° to 70°C) and Industrial (-40° to 85°C)
temperature options
Equal access and cycle times
– Commercial and Industrial: 12/15/20/25ns
One Chip Select plus one Output Enable pin
Bidirectional data inputs and outputs directly
TTL-compatible
Low power consumption via chip deselect
Commercial product available in 28-pin 300- and 600-mil
Plastic DIP, 300 mil Plastic SOJ and TSOP packages
Industrial product available in 28-pin 300 mil Plastic SOJ
and TSOP packages
The IDT71256SA is a 262,144-bit high-speed Static RAM organized
as 32K x 8. It is fabricated using IDT’s high-perfomance, high-reliability
CMOS technology. This state-of-the-art technology, combined with
innovative circuit design techniques, provides a cost-effective solution for
high-speed memory needs.
The IDT71256SA has an output enable pin which operates as fast as
6ns, with address access times as fast as 12ns. All bidirectional inputs and
outputs of the IDT71256SA are TTL-compatible and operation is from a
single 5V supply. Fully static asynchronous circuitry is used, requiring no
clocks or refresh for operation.
The IDT71256SA is packaged in 28-pin 300- and 600-mil Plastic DIP,
28-pin 300 mil Plastic SOJ and TSOP.
Functional Block Diagram
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
262,144-BIT
MEMORY
ARRAY
ADDRESS
DECODER
,
I/O0 - I/O7
8
8
I/O CONTROL
2948 drw 01
CS
WE
OE
CONTROL
LOGIC
FEBRUARY 2001
1
©2000 Integrated Device Technology, Inc.
DSC-2948/07
