74121 Datasheet – Monostable multivibrator – Fairchild

Part Number: 74121, DM74121, DM74121N

Function : One-Shot with Clear and Complementary Outputs

Package : DIP 14 Pin Type

Manufacturer: Fairchild Semiconductor


74121 image

1. Triggered from active-HIGH transition or active-LOW transition inputs
2. Variable pulse width from 30 ns to 28 seconds
3. Jitter free Schmitt-trigger input
4. Excellent noise immunity typically 1.2V
5. Stable pulse width up to 90% duty cycle
6. TTL, DTL compatible
7. Compensated for VCCand temperature variations
8. Input clamp diodes

74121 datasheet


The DM74121 is a monostable multivibrator featuring both positive and negative edge triggering with complementary outputs. An internal 2kΩtiming resistor is provided for design convenience minimizing component count and layout problems. this device can be used with a single external capacitor.

74121 Datasheet

74121 pdf