AS7C4098A is a 5.0V 256 K × 16 CMOS SRAM memory chip produced by Alliance Semiconductor. It has industrial and commercial temperature, 262,144 words × 16 bits storage capacity, up to 10/12/15/20 ns address access time, 5/6 ns output enable access time, 990mW/max @ 10 ns ACTIVE current consumption, 55mW/max CMOS STANDBY current consumption, TTL- and CMOS-compatible, three-state I/O, and 44-pin JEDEC standard package.
The AS7C4098A is a high‑performance 5 V CMOS static RAM organized as 262,144 words × 16 bits. It offers fast address access times of 10 ns to 20 ns and output‑enable times of 5 ns to 6 ns, with low active power consumption (990 mW) and standby power (55 mW).
The device is supplied in standard 44‑pin SOJ (400‑mil) and TSOP‑2 packages, supports industrial (‑40 °C to 85 °C) and commercial (0 °C to 70 °C) temperature ranges, and provides multiple center power and ground pins, byte‑enable controls, and TTL/CMOS‑compatible three‑state I/O.
| Memory organization | 262,144 words × 16 bits |
|---|---|
| Supply voltage | 5.0 V |
| Address access time | 10 ns / 12 ns / 15 ns / 20 ns |
| Output enable access time | 5 ns / 6 ns |
| Active power consumption | 990 mW max @ 10 ns |
| Standby power consumption | 55 mW max |
| Operating temperature range | Commercial 0 °C to 70 °C, Industrial –40 °C to 85 °C |
| Package options | 44‑pin SOJ (400‑mil) and TSOP‑2 |
The device operates from a 5.0 V supply.
It is offered in a 44‑pin SOJ (400‑mil) and a TSOP‑2 package.
Standby power consumption is up to 55 mW.
The SRAM works from 0 °C to 70 °C in commercial mode and –40 °C to 85 °C in industrial mode.