CY54FCT138T, CY74FCT138T

1-OF-8 DECODERS

SCCS013B – MAY 1994 – REVISED OCTOBER 2001

1

POST OFFICE BOX 655303

With FCT and F Logic

Equivalent FCT Functions

Significantly Improved Noise

Characteristics

Operation

Output Logic Levels

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

– 1000-V Charged-Device Model (C101)

– 32-mA Output Sink Current

– 12-mA Output Source Current

– 64-mA Output Sink Current

– 32-mA Output Source Current

description

expansion of the device to a 1-of-32 (five lines to 32 lines) decoder with just four ’FCT138T devices and one

inverter.

outputs, preventing damaging current backflow through the device when it is powered down.

PIN DESCRIPTION

NAME

DESCRIPTION

A

Address inputs

E1, E2

Enable inputs (active low)

E3

Enable input (active high)

O

Outputs

Copyright

 2001, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

GND

CY54FCT138T ...D PACKAGE

CY74FCT138T ...Q OR SO PACKAGE

(TOP VIEW)

32 1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

NC

NC

CY54FCT138T . . . L PACKAGE

(TOP VIEW)

NC – No internal connection

On products compliant to MIL-PRF-38535, all parameters are tested

unless otherwise noted. On all other products, production

processing does not necessarily include testing of all parameters.