ON 74VHC123AMTCX

单稳态8.1 ns2 V ~ 5.5 V

Overview

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

74VHC Series
in 16-TSSOP (0.173, 4.40mm Width) package
Mounting Type: Surface Mount
Logic Type: Monostable
Operating Temperature: 74VHC
based on 74VHC123
Supply Voltage: 3.3V
Quiescent Current at 4μA
output current at 8mA

2 V ~ 5.5 V Voltage - Supply

Applications

There are a lot of ON Semiconductor
74VHC123AMTCX applications of multivibrators.

• Timing clrcults
• Time-delay applications
• AV Receivers
• Blu-ray Players and Home Theaters
• DVD Recorders and Players
• Desktop PCs or Notebook PCs
• Digital Radio and Internet Radio Players
• Digital Video Cameras (DVC)
• Embedded PCs
• GPS: Personal Navigation Devices