SN54AHCT123A, SN74AHCT123A

DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS

SCLS420G – JUNE 1998 – REVISED APRIL 2003

1

POST OFFICE BOX 655303

Inputs for Slow Input Transition Rates

Active-Low Gated Logic Inputs

JESD 78, Class II

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

– 1000-V Charged-Device Model (C101)

description/ordering information

These

edge-triggered

multivibrators

feature

output pulse-duration control by three methods. In

the first method, the A input is low, and the B input

goes high. In the second method, the B input is

high, and the A input goes low. In the third method,

the A input is low, the B input is high, and the clear

(CLR) input goes high.

The output pulse duration is programmed by

selecting external resistance and capacitance

values. The external timing capacitor must be

and an external resistor connected between

durations, connect an external variable resistance

duration also can be reduced by taking CLR low.

ORDERING INFORMATION

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP – N

Tube

SN74AHCT123AN

SN74AHCT123AN

SOIC

D

Tube

SN74AHCT123AD

AHCT123A

40

°Cto85°C

SOIC – D

Tape and reel

SN74AHCT123ADR

AHCT123A

–40

°C to 85°C

SSOP – DB

Tape and reel

SN74AHCT123ADBR

HB123A

TSSOP – PW

Tape and reel

SN74AHCT123APWR

HB123A

TVSOP – DGV

Tape and reel

SN74AHCT123ADGVR

HB123A

CDIP – J

Tube

SNJ54AHCT123AJ

SNJ54AHCT123AJ

–55

°C to 125°C

CFP – W

Tube

SNJ54AHCT123AW

SNJ54AHCT123AW

LCCC – FK

Tube

SNJ54AHCT123AFK

SNJ54AHCT123AFK

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

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

Copyright

 2003, Texas Instruments Incorporated

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.

SN54AHCT123A ...J OR W PACKAGE

SN74AHCT123A . . . D, DB, DGV, N, OR PW PACKAGE

(TOP VIEW)

SN54AHCT123A . . . FK PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1A

1B

1CLR

1Q

2Q

GND

1Q

2Q

2CLR

2B

2A

32

1 20 19

910 11 1213

4

5

6

7

8

18

17

16

15

14

1Q

NC

2Q

2CLR

1CLR

1Q

NC

2Q

NC – No internal connection

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.

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.