54121 Datasheet - National Semiconductor

54121 Monostable Multivibrator

The DM54 74121 is a monostable multivibrator featuring both positive and negative edge triggering with complementary outputs An internal 2kX timing resistor is provided for design convenience minimizing component count and layout problems This device can be used with a single external capacitor Inpu.

54121 Features

* Y Y Triggered from active-high transition or active-low transition inputs Variable pulse width from 30 ns to 28 seconds Connection Diagram Dual-In-Line Package Function Table Inputs A1 L X X H H A2 X L X H B H H L X H H H Q L L L L Outputs Q H H H H v H v v L X H L X TL F 6538

* 1 v X

54121_NationalSemiconductor.pdf