High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators With Reset

The HC123, HCT123, CD74HC423 and CD74HCT423 are dual Monostable Multivibrators with resets. They are all retriggerable and differ only in that the 123 types CAN be triggered by a negative to positive reset pulse; whereas the 423 types do not have this feature. An external resistor (RX) and an external capacitor (CX) control the Timing and the accuracy for the circuit. Adjustment of Rx and CX provides a wide range of output pulse widths from the Q and Q terminals. Pulse triggering on the A and B inputs occur at a particular voltage level and is not related to the rise and fall times of the trigger pulses.
Once triggered, the output pulse width may be extended by retriggering inputs A and B. The output pulse CAN be terminated by a LOW level on the Reset (R) pin. Trailing edge triggering (A) and leading edge triggering (B) inputs are provided for triggering from either edge of the input pulse. If either Mono is not used each input on the unused device (A, B, and R) must be terminated high or low.
The minimum value of external resistance, Rx is typically 5k. The minimum value external capacitance, CX, is 0pF. The calculation for the pulse width is tW = 0.45 RXCX at VCC = 5V.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
CD74HC423EE4 Texas Instruments HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDIP16, ROHS COMPLIANT, PLASTIC, DIP-16
CD74HC423NSR Texas Instruments High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Reset 16-SO -55 to 125
CD74HC423MTE4 Texas Instruments High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Reset 16-SOIC -55 to 125
CD74HC423M Texas Instruments High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Reset 16-SOIC -55 to 125
CD74HC423NSRE4 Texas Instruments High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Reset 16-SO -55 to 125
CD74HC423M96 Texas Instruments High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Reset 16-SOIC -55 to 125
CD74HC423NSRG4 Texas Instruments HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16, GREEN, PLASTIC, SOP-16
CD74HC423M96G4 Texas Instruments High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Reset 16-SOIC -55 to 125
CD74HC423E Texas Instruments High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Reset 16-PDIP -55 to 125
CD74HC423MTG4 Texas Instruments HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16, GREEN, PLASTIC, MS-012AC, SOIC-16
CD74HC423 's PackagesCD74HC423 's pdf datasheet
CD74HC423E PDIP
CD74HC423EE4 PDIP
CD74HC423M SOIC
CD74HC423M96 SOIC
CD74HC423M96E4 SOIC
CD74HC423M96G4 SOIC
CD74HC423ME4 SOIC
CD74HC423MG4 SOIC
CD74HC423MT SOIC
CD74HC423MTE4 SOIC
CD74HC423MTG4 SOIC
CD74HC423NSR SO
CD74HC423NSRE4 SO
CD74HC423NSRG4 SO




CD74HC423 Pinout, Pinouts
CD74HC423 pinout,Pin out
This is one package pinout of CD74HC423,If you need more pinouts please download CD74HC423's pdf datasheet.

CD74HC423 Application circuits
CD74HC423 circuits
This is one application circuit of CD74HC423,If you need more circuits,please download CD74HC423's pdf datasheet.


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CD74HC423 Application Notes CD74HC423 RoHS CD74HC423 Circuits CD74HC423 footprint
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