CMOS Static RAM
1 Meg (256K x 4-Bit)
IDT71028
Features
x 256K x 4 advanced high-speed CMOS static RAM
x Equal access and cycle times
— Commercial and Industrial: 12/15/20ns
x One Chip Select plus one Output Enable pin
x Bidirectional data inputs and outputs directly
TTL-compatible
x Low power consumption via chip deselect
x Available in 400 mil Plastic SOJ package.
Functional Block Diagram
A0
Description
The IDT71028 is a 1,048,576-bit high-speed static RAM orga-
nized as 256K x 4. It is fabricated using IDT’s high-perfomance, high-
reliability CMOS technology. This state-of-the-art technology, com-
bined with innovative circuit design techniques, provides a cost-
effective solution for high-speed memory needs.
The IDT71028 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 IDT71028 are TTL-compatible and oper-
ation is from a single 5V supply. Fully static asynchronous circuitry
is used, requiring no clocks or refresh for operation.
The IDT71028 is packaged in a 28-pin 400 mil Plastic SOJ.
•
•
•
ADDRESS
DECODER
•
•
•
1,048,576-BIT
MEMORY
ARRAY
A17
4
I/O0–I/O3
4
I/O CONTROL
CS
WE
OE
CONTROL
LOGIC
1
©2000 Integrated Device Technology, Inc.
2966 drw 01
FEBRUARY 2001
DSC-2966/08