CAT28C17API-20T datasheet(8/8 Pages) CATALYST

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CAT28C17A

Doc. No. 25034-00 2/98

HARDWARE DATA PROTECTION

The following is a list of hardware data protection fea-

tures that are incorporated into the CAT28C17A.

(1) VCC sense provides for write protection when VCC

falls below 3.0V min.

(2) A power on delay mechanism, tINIT (see AC charac-

teristics), provides a 5 to 20 ms delay before a write

sequence, after VCC has reached 3.0V min.

(3) Write inhibit is activated by holding any one of OE

low, CE high or WE high.

(4) Noise pulses of less than 20 ns on the WE or CE

inputs will not result in a write cycle.

ORDERING INFORMATION

Notes:

(1)

The device used in the above example is a CAT28C17ANI-20T (PLCC, Industrial temperature, 200 ns Access Time, Tape & Reel).

28C17A F09

Prefix

Device #

Suffix

28C17A

Product

Number

Tape & Reel

T: 500/Reel

Package

P: PDIP

N: PLCC

J: SOIC (JEDEC)

K: SOIC (EIAJ)

-20

CAT

Optional

Company ID

Temperature Range

Blank = Commercial (0˚C to +70˚C)

I = Industrial (-40˚C to +85˚C)

A = Automotive (-40˚ to +105˚C)*

Speed

20: 200ns

* -40˚C to +125˚C is available upon request

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