TI SN74LS122D

单稳态28 ns4.75 V ~ 5.25 V

Overview

These d-c triggered multivibrators feature output pulse-duration control by three methods. The basic pulse time is programmed by selection of external resistance and capacitance values (see typical application data). The '122 and 'LS122 have internal timing resistors that allow the circuits to be used with only an external capacitor, if so desired. Once triggered, the basic pulse duration may be extended by retriggering the gated low-level-active (A) or high-level-active (B) inputs, or be reduced by use of the overriding clear. Figure 1 illustrates pulse control by retriggering and early clear.

The Rint is nominally 10 k for '122 and 'LS122.

Features

74LS Series
in 14-SOIC (0.154, 3.90mm Width) package
Mounting Type: Surface Mount
Logic Type: Monostable
Operating Temperature: 74LS
based on 74LS122
Supply Voltage: 5V
Quiescent Current at 6mA
output current at 8mA
2 bits

4.75 V ~ 5.25 V Voltage - Supply

Applications

There are a lot of Texas Instruments
SN74LS122D 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