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74VHC123A

Fairchild Semiconductor
Part Number 74VHC123A
Manufacturer Fairchild Semiconductor
Description Dual Retriggerable Monostable Multivibrator
Published Mar 22, 2005
Detailed Description ( DataSheet : www.DataSheet4U.com ) 74VHC123A Dual Retriggerable Monostable Multivibrator July 1993 Revised April 1999...
Datasheet PDF File 74VHC123A PDF File

74VHC123A
74VHC123A

Overview
( DataSheet : www.
DataSheet4U.
com ) 74VHC123A Dual Retriggerable Monostable Multivibrator July 1993 Revised April 1999 74VHC123A Dual Retriggerable Monostable Multivibrator General Description The VHC123A is an advanced high speed CMOS Monostable Multivibrator fabricated with silicon gate CMOS technology.
It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation.
Each multivibrator features both a negative, A, and a positive, B, transition triggered input, either of which can be used as an inhibit input.
Also included is a clear input that when taken low resets the one-shot.
The VHC123A can be triggered on the positive transition of the clear while A is held low and B is held high.
The output pulse width is determined by the equation: PW = (Rx)(Cx); where PW is in seconds, R is in ohms, and C is in farads.
Limits for Rx and Cx are: External capacitor, Cx No limit External resistors, Rx VCC > 3.
0V, 1 kΩ min VCC = 2.
0V, 5 kΩ min An input protection circuit ensures that 0 to 7V can be applied to the input pins without regard to the supply voltage.
This device can be used to interface 5V to 3V systems and two supply systems such as battery back up.
This circuit prevents device destruction due to mismatched supply and input voltages.
Features s High Speed: tPD = 8.
1 ns (typ) at TA = 25°C s Low Power Dissipation: ICC = 4 µA (Max) at TA = 25°C s Active State: ICC = 600 µA (Max) at TA = 25°C s High Noise Immunity: VNIH = VNIL = 28% VCC (min) s Power down protection is provided on all inputs s Pin and function compatible with 74HC123A Ordering Code: Order Number 74VHC123AM 74VHC123ASJ 74VHC123AMTC 74VHC123AN Package Number M16A M16D MTC16 N16E Package Description 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.
150” Narrow 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.
3mm Wide 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.
4mm Wide 16-Lead Plastic Dual-In-Li...


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