IDT71256 Datasheet – 256K, CMOS Static RAM

IDT71256 is a type of static random-access memory (SRAM) chip manufactured by Integrated Device Technology, Inc. (IDT). It is a high-speed, low-power CMOS (complementary metal-oxide-semiconductor) memory device commonly used in various electronic systems for storing data temporarily. “71256” in the part number typically indicates a 256-kilobit (Kb) memory capacity. This means the SRAM chip can store 256 kilobits (32 kilobytes) of data.

Part Number: 71256, IDT71256L

Function: 256K (32K x 8-Bit) CMOS Static RAM

Package: DIP 28 Pin  Type

Manufacturer: Integrated Device Technology, Renesas


IDT71256 datasheet pdf



IDT71256 is a 262,144-bit high-speed static RAM organized as 32K x 8. It is fabricated using high-performance, high-reliability CMOS technology. Address access times as fast as 20ns are available with power consumption of only 350mW (typ.). The circuit also offers a reduced power standby mode. When CS goes HIGH, the circuit will automatically go to and remain in, a low-power standby mode as long as CS remains HIGH. This capability provides significant system level power and cooling savings. The low-power (L) version also offers a battery backup data retention capability where the circuit typically consumes only 5μW when operating off a 2V battery.


1. High-speed address/chip select time
(1) Commercial: 20/25/35ns (max.)
(2) Industrial: 20/25/35ns (max.)
(3) Military: 25/35/45/55/70/85/100ns (max.)

2. Low-power operation

3. Battery Backup operation – 2V data retention

4. Produced with advanced high-performance CMOS technology

5. Input and output directly TTL-compatible


IDT71256 pinout



SRAM is widely used in a variety of applications, including embedded systems, telecommunications equipment, networking devices, industrial automation, and consumer electronics. It provides fast and reliable data storage for temporary working memory requirements in these systems.

IDT71256 Datasheet PDF

IDT71256 pdf