SN74AHCT123A - Texas Instruments

SN74AHCT123A DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS

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 .

Features

The external timing capacitor must be connected between Cext and Rext/Cext (positive) and an external resistor connected between Rext/Cext and VCC. To obtain variable pulse durations, connect an external variable resistance between Rext/Cext and VCC. The output pulse duration also can be reduced by taking CLR low. SCLS420G
  – JUNE 1998
  – REVISED APRIL 2003 SN54AHCT123A . . . J OR W PACKAGE SN74AHCT123A . . . D, DB, DGV, N, OR PW PACKAGE (TOP VIEW) 1A 1B 1CLR 1Q 2Q 2Cext 2Rext/Cext GND 1 2 3 4 5 6 7 8 16 VCC 15 1Rext/Cext 14 1Cext 13 1Q 12 2Q 11 2CLR 10 2B 9 2A SN54AHCT123A . . . FK PACKAG.