IDT71V256SA is a 262,144-bit high-speed static RAM organized as 32K x 8. It is fabricated using IDT's high-performance, high-reliability CMOS technology. The IDT71V256SA has outstanding low power characteristics while at the same time maintaining very high performance. Address access times of as fast as 10ns are ideal for 3.3V secondary cache in 3.3V desktop designs. When power management logic puts the IDT71V256SA in standby mode, its very low power characteristics contribute to extended battery life. By taking CS HIGH, the SRAM will automatically go to a low power standby mode and will remain in standby as long as CS remains HIGH. Furthermore, under full standby mode (CS at CMOS level, f=0), power consump- tion is guaranteed to always be less than 6.6mW and typically will be much smaller. The IDT71V256SA is packaged in a 28-pin 300 mil SOJ and a 28-pin 300 mil TSOP Type I
The IDT71V256SA is a 256‑Kbit (32K × 8‑bit) static RAM designed for high‑performance processor secondary cache. It offers low standby current, fast access times as low as 10 ns, and operates from a single 3.3 V supply. The device is LVTTL‑compatible and available in 28‑pin 300 mil SOJ and TSOP packages.
The datasheet provides absolute maximum ratings, recommended operating conditions, and detailed DC and AC electrical characteristics. Timing diagrams for read and write cycles illustrate required control signal behavior. Ordering information, temperature ranges, and a document history are also included.
| Standby Power (full standby) | < 6.6 mW |
|---|---|
| Access Time (Commercial/Industrial) | 10 ns to 20 ns |
| Power Dissipation | 1.0 W |
| Operating Temperature (Commercial) | 0 °C to +70 °C |
| Operating Temperature (Industrial) | -40 °C to +85 °C |
In full standby mode the IDT71V256SA consumes less than 6.6 mW.
Typical access times range from 10 ns to 20 ns depending on the speed grade.