SN54LV123A

SN74LV123A

www.ti.com

SCLS393Q – APRIL 1998 – REVISED AUGUST 2015

5 Description (continued)

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 programmable by selecting external resistance and capacitance values. The

6 Pin Configuration and Functions

D, DB, DGV, NS, or PW Package

RGY Package

16-Pin SOIC, SSOP, SO, TSSOP

16-Pin VQFN

Top View

Top View

Pin Functions

PIN

I/O

DESCRIPTION

NAME

NO.

1A

1

I

Channel 1 falling edge trigger input when 1B = L; Hold low for other input methods

1B

2

I

Channel 1 rising edge trigger input when 1A = H; Hold high for other input methods

Channel 1 rising edge trigger when 1A = H and 1B = L; Hold high for other input methods;

1CLR

3

I

Can cut pulse length short by driving low during output

1Q

4

O

Channel 1 inverted output

2Q

5

O

Channel 2 output

6

—

Channel 2 external capacitor negative connection

7

—

Channel 2 external capacitor and resistor junction connection

GND

8

—

Ground

2A

9

I

Channel 2 falling edge trigger input when 2B = L; Hold low for other input methods

2B

10

I

Channel 2 rising edge trigger input when 2A = H; Hold high for other input methods

Channel 2 rising edge trigger when 2A = H and 2B = L; Hold high for other input methods;

2CLR

11

I

Can cut pulse length short by driving low during output

2Q

12

O

Channel 2 inverted output

1Q

13

O

Channel 1 output

14

—

Channel 1 external capacitor negative connection

15

—

Channel 1 external capacitor and resistor junction connection

16

—

Power supply

Copyright © 1998–2015, Texas Instruments Incorporated

Submit Documentation Feedback

3

Product Folder Links: SN54LV123A SN74LV123A