Part Number: CD4047, CD4047BC, CD4047BCN, CD4047BCM

Function : Low Power Monostable/Astable Multivibrator

Package : SOIC, PDIP 14 Pin Type

Manufacturer: Fairchild Semiconductor

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Description

The CD4047 is capable of operating in either the monostable or astable mode. It requires an external capacitor (between pins 1 and 3) and an external resistor (between pins 2 and 3) to determine the output pulse width in the monostable mode, and the output frequency in the astable mode.

Features

1. Positive- or negative-edge trigger
2. Output pulse width independent of trigger pulse duration
3. Retriggerable option for pulse width expansion
4. Long pulse widths possible using small RC components by means of external counter provision
5. Fast recovery time essentially independent of pulse width
6. Pulse-width accuracy maintained at duty cycles approaching 100%

CD4047 Datasheet PDF

 

Part Number: 74121, DM74121, DM74121N

Function : One-Shot with Clear and Complementary Outputs

Package : DIP 14 Pin Type

Manufacturer: Fairchild Semiconductor

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Features
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

Description

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