M74HC4538RM13TR

Multivibrators Overview

The M74HC4538RM13TR is a dual retriggerable monostable multivibrator from the STMicroelectronics 74HC series, fabricated in silicon gate C2MOS technology. It operates within a supply voltage range of 2V to 6V and supports an operating temperature range of -55°C to +125°C. The device features symmetrical output impedance with minimum high and low level output currents of 4mA. Propagation delay (tPD) is typically 25ns at VCC = 6V. Quiescent standby current (ICC) is maximized at 4μA at 25°C. The package is 16-SOIC.

Multivibrators Feature Summary

• Dual retriggerable precision monostable multivibrator architecture
• Edge-triggered inputs for both positive and negative transitions
• High noise immunity with Schmitt trigger inputs
• Balanced propagation delays between outputs

Multivibrators Applications

• Pulse width modulation generation
• Timing delay circuits
• Debouncing switches
• Frequency division

Multivibrators Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status as indicated on official datasheets. Ensure storage conditions meet specified moisture sensitivity levels prior to soldering. Validate that the ordering suffix matches the required SOIC-16 tape and reel packaging format.

Multivibrators Selection Notes

Select this component when precise timing intervals are required using external RC networks. Verify that the input signal transition times fall within the recommended limits for the chosen supply voltage. Ensure the external capacitor leakage does not exceed device specifications for long pulse widths.

Multivibrators Part Context

This part belongs to the M74HC4538 family of logic ICs manufactured by STMicroelectronics. It is functionally compatible with standard 74HC4538 devices. The RM13 suffix indicates the specific 16-SOIC surface mount package configuration.

Multivibrators Replacement Considerations

Direct substitutes include Nexperia 74HC4538D,653 and Texas Instruments CD74HC4538M96. Verify pin compatibility and electrical characteristics before substitution.

Multivibrators FAQ

How is the output pulse width determined?

The output pulse width is determined by the formula PW = 0.7(R)(C), where R is the external resistor value and C is the external capacitor value.

What happens if a trigger pulse arrives during the output pulse generation?

The device is retriggerable; a new trigger pulse will extend the output pulse duration from the moment of the new trigger.