MC74HC4538ADG

Overview

The MC74HC4538ADG is a dual precision monostable multivibrator manufactured by onsemi, housed in an SOIC-16 surface-mount package. It operates within a supply voltage range of 3 V to 6 V, with typical operation at 3.3 V and 5 V. The device features two independent elements per chip, offering propagation delays of 195 ns, 39 ns, and 33 ns. Maximum power supply current is 130 uA, while output currents are rated at 5.2 mA for low level and -5.2 mA for high level. It supports an operating temperature range from -55 C to +125 C.

Feature Summary

• Dual precision monostable multivibrator configuration
• Retriggerable pulse generation capability
• Schmitt trigger inputs for noise immunity

Applications

• Pulse width modulation circuits
• Timing delay applications
• Frequency division circuits

Procurement Notes

Verify component authenticity through authorized channels as the part is marked as obsolete. Confirm RoHS compliance status via official documentation before integration. Check for end-of-life notices and potential supply constraints due to discontinuation status.

Selection Notes

Select this component for designs requiring precise timing intervals with Schmitt trigger input conditioning. Ensure compatibility with HC logic family voltage levels. Consider the extended industrial temperature range for harsh environment applications.

Part Context

This device belongs to the MC74HC4538A series of monostable multivibrators. It utilizes advanced silicon-gate CMOS technology to provide speeds comparable to low-power Schottky TTL while maintaining CMOS low power consumption and high noise immunity characteristics.

Replacement Considerations

Public confirmed substitute part numbers: MM74HC4538SJ.