74LS121 Datasheet (National) - monostable multivibrator featuring both positive and negative edge triggering

74LS121, monostable multivibrator featuring both positive and negative edge triggering

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

74LS121 Features

* Y Y Triggered from active-high transition or active-low transition inputs Variable pulse width from 30 ns to 28 seconds The basic output pulse width is determined by selection of an internal resistor RINT or an external resistor (RX) and capacitor (CX) Once triggered the output pulse width is inde