MC74HC4538A Dual Precision Monostable Multivibrator (Retriggerable, Resettable) The MC74HC4538A is identical in pinout to the MC14538B. The device inputs are compatible with standard CMOS outputs with MC74HC4538A FUNCTION TABLE Inputs Outputs Reset A B Q Q HH HL H X L Not Triggered H H X Not Triggered H L,H, H Not Triggered H L L,H, Not Triggered LX X L H X X Not Triggered C1R 1 X X V CC 12 PIN 16 = V CC PIN 8 = GND 6 4 Q1 A1 TRIGGER R AND C ARE EXTERNAL COMPONENTS X X 5 INPUTS 7 PIN 1 AND PIN 15 MUST BE HARD WIRED TO GND B1 Q1 3 RESET 1 C2R 2 X X V CC 15 14 10 12 Q2 A2 TRIGGER 11 INPUTS 9 B2 Q2 13 RESET 2 Figure 1. Logic Diagram ORDERING INFORMATION Device Package Shipping MC74HC4538ADG SOIC16 48 Units / Rail (PbFree) MC74HC4538ADR2G SOIC16 2500 / Tape & Reel (PbFree) NLV74HC4538ADR2G* SOIC16 2500 / Tape & Reel (PbFree) MC74HC4538ADTR2G TSSOP16 2500 / Tape & Reel (PbFree) NLVHC4538ADTR2G* TSSOP16 2500 / Tape & Reel (PbFree) For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *NLV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements AECQ100 Qualified and PPAP Capable