M74HC123TTR

Multivibrators Overview

The M74HC123TTR is a dual retriggerable monostable multivibrator manufactured by STMicroelectronics using silicon gate C2MOS technology. It operates within a supply voltage range of 2V to 6V and features high-speed performance with a typical propagation delay of 23 ns at 6V. The device provides symmetrical output impedance with minimum drive currents of 4 mA for both high and low states. Quiescent supply current is limited to 4 μA maximum in the standby state at 25°C. Output pulse widths are adjustable from 120 ns to 60 seconds using external resistor and capacitor components.

Multivibrators Feature Summary

• Dual independent monostable circuits with Schmitt-trigger inputs for slow signal processing
• Retriggerable operation allowing pulse width extension during active timing cycles
• Direct reset capability via positive-edge triggered CLR input
• High noise immunity with defined threshold levels relative to supply voltage

Multivibrators Applications

• Timing generation and pulse stretching
• Debouncing mechanical switches
• Frequency division and pulse width modulation
• Delay line applications

Multivibrators Procurement Notes

Verify that the component matches the specific TSSOP-16 package configuration indicated by the ordering suffix. Confirm the datasheet revision aligns with the required electrical specifications, particularly regarding operating temperature ranges and absolute maximum ratings. Ensure compatibility with system voltage levels before integration.

Multivibrators Selection Notes

Select this component when dual independent timing channels are required within a single package. The wide operating voltage range supports various logic families. Consider the external RC network requirements for precise timing control. Verify that the available output drive current meets the load requirements of the connected circuitry.

Multivibrators Part Context

This part belongs to the M74HC123 series of monostable multivibrators. It is functionally compatible with the standard 74LS123 series but utilizes CMOS technology for lower power consumption. The device offers two separate trigger circuits, each capable of generating a timed output pulse based on external timing components.

Multivibrators Replacement Considerations

Compatible substitutes include M74HC123B1R, M74HC123M1R, and M74HC123RM13TR.