71256SA20TPG Datasheet, PDF (1/8 Pages) Integrated Device Technology – CMOS Static RAM 256K (32K x 8-Bit)

CMOS Static RAM
256K (32K x 8-Bit)
IDT71256SA
Features
◆ _{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-mil Plastic DIP,}
300 mil Plastic SOJ and TSOP packages
◆ _{Industrial product available in 28-pin 300 mil Plastic SOJ}
and TSOP packages
Description
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-mil Plastic DIP, 28-pin
300 mil Plastic SOJ and TSOP.
Functional Block Diagram
A0
A1
A2
A3
A4
A5
A6
ADDRESS
A7
A8
DECODER
A9
A10
A11
A12
A13
A14
262,144-BIT
MEMORY
ARRAY
,
I/O0 - I/O7 ⁸
8
I/O CONTROL
CS
WE
CONTROL
OE
LOGIC
1
©2011 Integrated Device Technology, Inc.
2948 drw 01
APRIL 2011
DSC-2948/10