ST M74HC221RM13TR

Моностабильный24 нс2 В ~ 6 В

Overview

The M74HC221 is an 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).Triggering on the B input occurs at a particular voltage threshold and is not related to rise and fall time of the applied pulse. The device may also be trigger by using the CLR input (positive edge) because of the Schimtt-trigger input; aftert riggering the output maintains the MONOSTABLE STATE for the time period determined by the external resistor Rx and capacitor Cx. Taking CLR low breaks this MONOSTABLE STATE. If the next trigger pulse occurs during the MONOSTABLE period it makes the MONOSTABLE period longer.Limit for values of Cx and Rx :Cx : NO LIMITRx : Vcc < 3.0V 5KΩ to 1MΩVcc > 3.0V 1KΩ to 1MΩK ≅ 0.7All inputs are equipped with protection circuits against static discharge and transient excess voltage.■ HIGH SPEED :tPD = 24 ns (TYP.) at VCC = 6V■ LOW POWER DISSIPATION:STAND BY STATE :ICC=4µA (MAX.) at TA=25°CACTIVE STATE :ICC=700µA (MAX.) at VCC = 5V■ HIGH NOISE IMMUNITY:VNIH = VNIL = 28 % VCC (MIN.)■ SYMMETRICAL OUTPUT IMPEDANCE:|IOH| = IOL = 4mA (MIN)■ BALANCED PROPAGATION DELAYS:tPLH ≅ tPHL■ WIDE OPERATING VOLTAGE RANGE:VCC (OPR) = 2V to 6V■ WIDE OUTPUT PULSE WIDTH RANGE :tWOUT = 150 ns ~ 60 s OVER AT VCC = 4.5 V■ PIN AND FUNCTION COMPATIBLE WITH74 SERIES 221

Features

74HC Series
in 16-SOIC (0.154, 3.90mm Width) package
Mounting Type: Surface Mount
Logic Type: Monostable
Operating Temperature: 74HC
based on M74HC221
Supply Voltage: 4.5V
Quiescent Current at 4μA
output current at 5.2mA

2 V ~ 6 V Voltage - Supply

Applications

There are a lot of STMicroelectronics
M74HC221RM13TR applications of multivibrators.

• Envelope detection
• Frequency multiplication
• Frequency division
• Frequency discriminators
• Timing clrcults
• Time-delay applications
• AV Receivers
• Blu-ray Players and Home Theaters
• DVD Recorders and Players
• Desktop PCs or Notebook PCs