SN74AHC123A Datasheet | Texas Instruments

SN54AHC123A, SN74AHC123A DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS D Operating Range 2-V to 5.5-V VCC D Schmitt-Trigger Circuitry On A, B, and CLR Inputs for Slow Input Transition Rates D Edge Triggered From Active-High or Active-Low Gated Logic Inputs D Retriggerable for Very Long Output Pulses D Overriding Clear Terminates Output Pulse D Glitch-Free Power-Up Reset On Outputs D Latch-Up Performance Exceeds 100 m A Per JESD 78, Class II D ESD Protection Exceeds JESD 22 - 2000-V Human-Body Model (A114-A) - 200-V Machine Model (A115-A) - 1000-V Charged-Device Model (C101) SCLS352H - JULY 1997 - REVISED OCTOBER 2005 SN54AHC123A . . . J OR W PACKAGE SN74AHC123A . . . 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 SN54AHC123A . . . FK PACKAGE (TOP VIEW) 1B 1A NC VCC 1Rext /Cext description/ordering information The ’AHC123A devices are dual retriggerable monostable multivibrators designed for 2-V to 5.5-V VCC operation. 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. 1CLR 1Q NC 2Q 2Cext 3 2 1 20 19 4 18 5 17 6 16 7 15 8...