74VHC123AFT Description

The 74VHC123AFT is a high-speed CMOS MONOSTABLE MULTIVIBRATOR fabricated with silicon gate C²MOS technology.  There are two trigger inputs, A input (negative edge), and B input (positive edge). These inputs are valid for a slow rise/fall time signal (tr = tf = 1 s) as they are Schmitt trigger inputs. This device may also be triggered by using CLR input (positive edge). An input protection circuit ensures that 0 to 5.5 V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5 V to 3 V systems and two supply systems such as battery backup. This circuit prevents device destruction due to mismatched supply and input voltages.

74VHC123AFT Features

AEC-Q100 (Rev. H) (Note 1)

Wide operating temperature range: Topr = -40 to 125

High speed: Propagation delay time = 8.1 ns (typ.) at VCC = 5 V

Low power dissipation:

 Standby state: 4.0 µA (max) at Ta = 25

 Active state: 750 µA (max) at Ta = 25

High noise immunity: VNIH = VNIL = 28 % VCC (min)

Power-down protection is provided on all inputs.

Balanced propagation delays: tPLH≈ tPHL

Wide operating voltage range: VCC(opr) = 2.0 V to 5.5 V

Pin and function compatible with 74HC123,74HC221 type.

74VHC123AFT Applications

Automotive 

Advanced driver assistance systems (ADAS) 

Industrial 

Grid infrastructure 

Enterprise systems 

Enterprise projectors