[PARADIGM]

描述 Description

The PDM41256 is a high-performance CMOS static RAM organized as 32,768 x 8 bits. This product is produced in Paradigm’s proprietary CMOS technology which offers the designer the highest speed parts. Writing to this device is accomplished when the write enable (WE) and the chip enable (CE) inputs are both LOW. Reading is accomplished when WE remains HIGH and CE and OE are both LOW.

The PDM41256 operates from a single +5V power supply and all the inputs and outputs are fully TTL compatible. The PDM41256 comes in two versions, the standard power version PDM41256SA and a low power version the PDM41256LA. The two versions are functionally the same and only differ in their power consumption.

The PDM41256 is available in a 28-pin plastic TSOP and a 28-pin 300-mil plastic SOJ.

特性 Features

■ High-speed access times

Com’l: 7, 8, 10, 12, and 15 ns

Ind’l: 8, 10, 12, and 15 ns

■ Low power operation (typical)

- PDM41256SA

Active: 400 mW

Standby: 150 mW

- PDM41256LA

Active: 350 mW

Standby: 25 mW

■ Single +5V (±10) power supply

■ TTL-compatible inputs and outputs

■ Packages

Plastic SOJ (300 mil) - TSO

Plastic TSOP - T