CY54FCT138T, CY74FCT138T

1-OF-8 DECODERS

SCCS013B – MAY 1994 – REVISED OCTOBER 2001

2

POST OFFICE BOX 655303

ORDERING INFORMATION

TA

PACKAGE†

SPEED

(ns)

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

QSOP – Q

Tape and reel

5

CY74FCT138CTQCT

FT138-3

SOIC

SO

Tube

5

CY74FCT138CTSOC

FCT138C

SOIC – SO

Tape and reel

5

CY74FCT138CTSOCT

FCT138C

–40

°C to 85°C

QSOP – Q

Tape and reel

5.8

CY74FCT138ATQCT

FT138-1

SOIC

SO

Tube

5.8

CY74FCT138ATSOC

FCT138A

SOIC – SO

Tape and reel

5.8

CY74FCT138ATSOCT

FCT138A

QSOP – Q

Tape and reel

9

CY74FCT138TQCT

FT138

LCC – L

Tube

6

CY54FCT138CTLMB

–55

°C to 125°C

LCC – L

Tube

12

CY54FCT138TLMB

CDIP – D

Tube

12

CY54FCT138TDMB

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

FUNCTION TABLE

INPUTS

OUTPUTS

E1

E2

E3

A0

A1

A2

O0

O1

O2

O3

O4

O5

O6

O7

H

X

X

X

X

X

H

H

H

H

H

H

H

H

X

HX

X

X

XH

HH

HH

HH

H

X

XL

X

X

X

H

HH

HH

HH

H

L

L

H

L

L

L

L

H

H

H

H

H

H

H

L

LH

HL

LH

L

H

HH

HH

H

L

LHLHLH

H

L

HH

HH

H

L

LH

H

H

LH

HH

L

H

HH

H

L

L

H

L

L

H

H

H

H

H

L

H

H

H

L

LH

HL

H

H

HH

HH

L

H

H

L

LHLH

H

H

HH

HH

H

L

H

L

L

H

H

H

H

H

H

H

H

H

H

H

L

H = High logic level, L = Low logic level, X = Don’t care