ON SN74LS221D

单稳态45 ns4.75 V ~ 5.25 V

Overview

The '221 and 'LS221 devices are monolithic dual multivibrators with performance characteristics virtually identical to those of the '121 devices. Each multivibrator features a negative-transition- triggered input and a positive-transition-triggered input, either of which can be used as an inhibit input.

Pin assignments for these devices are identical to those of the SN54123/SN74123 or SN54LS123/SN74LS123 so that the '221 or 'LS221 devices can be substituted for those products in systems not using the retrigger by merely changing the value of Rext and/or Cext; however, the polarity of the capacitor must be changed.

Features

74LS Series
in 16-SOIC (0.154, 3.90mm Width) package
Mounting Type: Surface Mount
Logic Type: Monostable
Operating Temperature: 74LS
based on 74LS221
Supply Voltage: 5V
Quiescent Current at 4.7mA
output current at 8mA
2 bits

4.75 V ~ 5.25 V Voltage - Supply

Applications

There are a lot of Texas Instruments
SN74LS221D 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