This document is a technical datasheet for the Pyramid Semiconductor Corporation P4C167 and P4C167L series of Ultra High Speed 16K x 1 Static CMOS RAMs. The devices are organized as 16,384-bit memories requiring no clocks or refreshing, operating from a single 5V power supply with data retention down to 2.0V for the military-grade P4C167L variant.
The datasheet provides comprehensive specifications including maximum ratings, DC and AC electrical characteristics across commercial, industrial, and military temperature ranges, and detailed timing waveforms for read and write cycles. It also includes ordering information for various package types such as DIP, SOJ, and LCC.
| Organization | 16K x 1 |
|---|---|
| Power Supply Voltage | 5V +/- 10% |
| Access Time (Commercial) | 10/12/15/20/25 ns |
| Operating Temperature (Military) | -55 to +125 °C |
| Power Dissipation | 1.0 W |
| Data Retention Voltage (Military) | 2.0V |
The P4C167L maintains data integrity with a supply voltage down to 2.0V.
The devices are available in 20-pin 300 mil DIP, 20-pin 300 mil SOJ, and 20-pin LCC packages.
Yes, the device features fully TTL compatible inputs.