PRODUCT SELECTION GUIDE

PARAMETER

WS57C191C/291C-35

WS57C191C/291C-45

WS57C191C/291C-55

Address Access Time (Max)

35 ns

45 ns

55 ns

CS to Output Valid Time (Max)

20 ns

20 ns

20 ns

MILITARY HIGH SPEED 2K x 8 CMOS PROM/RPROM

KEY FEATURES

and N82S191 Bipolar PROMs

— Up to 200 mA

GENERAL DESCRIPTION

The WS57C191C/291C is an extremely High Performance 16K UV Erasable Electrically Re-Programmable Read

Only Memory (RPROM). It is manufactured in an advanced CMOS technology which enables it to operate at Bipolar

PROM speeds while consuming only 25% of the power required by its Bipolar counterparts. The WS57C191C/291C

is also configured in the standard Bipolar PROM pinout which provides an easy upgrade path for systems which are

currently using Bipolar PROMs.

The WS57C191C is packaged in a conventional 600 mil DIP package. The WS57C291C is packaged in a space

saving 300 mil DIP package configuration.

WS57C191C/291C

PINS

CS3

OUTPUTS

MODE

Read

Output

Disable

XX

High Z

Output

High Z

Disable

Program

XX

Program

Verify

Output

Disable

XX

High Z

A10

CS2

CS3

GND

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

TOP VIEW

CERDIP

MODE SELECTION

PIN CONFIGURATION

4-3

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