74VHC123A: Dual Retriggerable Monastable Multivibrator

Datasheet: Dual Retriggerable Monastable Multivibrator
Rev. A (582kB)
Product Overview
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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, CxNo limit External resistors, Rx VCC = 2.0V, 5 kohm min VCC > 3.0V, 1 kohm 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
 
  • High Speed: tPD = 8.1 ns (typ) at TA = 25°C
  • Low Power Dissipation:ICC = 4 µA (Max) at TA = 25°C
  • Active State: ICC = 600 µA (Max) at TA = 25°C
  • High Noise Immunity: VNIH = VNIL = 28% VCC (min)
  • Power down protection is provided on all inputs
  • Pin and function compatible with 74HC123A
Applications
  • This product is general usage and suitable for many different applications.
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
74VHC123AM Active
Pb-free
74VHC123A SOIC-16 751BG 1 260 Tube 960 $0.5267
74VHC123AMTC Active
Pb-free
Halide free
74VHC123A TSSOP-16 948AH 1 260 Tube 2350 $0.1861
74VHC123AMTCX Active
Pb-free
Halide free
74VHC123A TSSOP-16 948AH 1 260 Tape and Reel 2500 $0.2147
74VHC123AMX Active
Pb-free
74VHC123A SOIC-16 751BG 1 260 Tape and Reel 2500 $0.4577
Market Leadtime (weeks) : Contact Factory
Avnet   (2020-08-19 00:00) : >10K
Market Leadtime (weeks) : Contact Factory
Avnet   (2020-08-19 00:00) : >10K
Market Leadtime (weeks) : Contact Factory
Avnet   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
Avnet   (2020-08-19 00:00) : >1K

Product
Description
Pricing ($/Unit)
Compliance
Status
Channels
VCC Min (V)
VCC Max (V)
tpd Max (ns)
IO Max (mA)
Package Type
74VHC123AM  
 $0.5267 
Pb
 Active   
2
2
5.5
10.2
8
SOIC-16
74VHC123AMTC  
 $0.1861 
Pb
H
 Active   
2
2
5.5
10.2
8
TSSOP-16
74VHC123AMTCX  
 $0.2147 
Pb
H
 Active   
2
2
5.5
10.2
8
TSSOP-16
74VHC123AMX  
 $0.4577 
Pb
 Active   
2
2
5.5
10.2
8
SOIC-16
Case Outlines
751BG    948AH   
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