CMOS Static RAM
64K (8K x 8-Bit)
7164S
7164L
Features
◆ High-speed address/chip select access time
– Commercial: 20/25ns (max.)
– Industrial: 20/25ns (max.)
– Military: 20/25/35/45/55/70/85/100ns (max.)
◆ Low power consumption
◆ Battery backup operation – 2V data retention voltage
(L Version only)
◆ Produced with advanced CMOS high-performance
technology
◆ Inputs and outputs directly TTL-compatible
◆ Three-state outputs
◆ Available in 28-pin DIP, CERDIP and SOJ
◆ Military product compliant to MIL-STD-883, Class B
◆ Industrial temperature range (–40°C to +85°C) is available
for selected speeds
◆ Green parts available, see ordering information
Description
The IDT7164 is a 65,536 bit high-speed static RAM organized as 8K
x 8. It is fabricated using high-performance, high-reliability CMOS tech-
nology.
Address access times as fast as 20ns are available and the circuit offers
a reduced power standby mode. When CS1 goes HIGH or CS2 goes
LOW, the circuit will automatically go to, and remain in, a low-power stand-
by mode. The low-power (L) version also offers a battery backup data
retention capability at power supply levels as low as 2V.
All inputs and outputs of the IDT7164 are TTL-compatible and
operation is from a single 5V supply, simplifying system designs. Fully
static asynchronous circuitry is used, requiring no clocks or refreshing
for operation.
The IDT7164 is packaged in a 28-pin 300 mil CERDIP, a 28-pin 600
mil CERDIP, 300mil Plastic DIP and 300mil SOJ
Military grade product is manufactured in compliance with MIL-STD-
883, Class B, making it ideally suited to military temperature applications
demanding the highest level of performance and reliability.
Functional Block Diagram
A0
ADDRESS
DECODER
A12
I/O 0
65,536 BIT
MEMORY ARRAY
0
I/O CONTROL
VCC
GND
7
I/O7
CS1
CS2
CONTROL
OE
LOGIC
WE
1
Jul.30.20
2967 drw 01
