MM74HC4538M-G

Overview

The MM74HC4538M-G is a monostable multivibrator manufactured by Rochester Electronics, LLC. It is housed in a 16-SOIC package with a width of 0.154 inches (3.90mm). The device operates within the HC/UH series and features CMOS technology. Key electrical specifications include a propagation delay of 26 ns and a minimum output pulse width of 120 ns when configured with an external resistor of 1 k Ohm and capacitor of 12 pF. The component is retriggerable and supports dual-function operation.

Feature Summary

• Retriggerable monostable multivibrator design for precise timing control
• CMOS construction compatible with HC/UH logic families
• Dual-function capability within a single integrated circuit

Applications

• Timing circuits requiring accurate frequency output
• Low-power signal processing designs
• Pulse generation and shaping applications

Procurement Notes

Verify the manufacturer designation as Rochester Electronics, LLC, which often handles surplus or discontinued inventory rather than original OEM production. Confirm the suffix 'G' indicates RoHS compliance and lead-free status. Ensure the package matches the 16-SOIC specification with the correct pinout for your PCB layout. Cross-reference the part number against official datasheets to confirm functional equivalence with standard 74HC4538 devices before integration.

Selection Notes

Select this component when a retriggerable monostable multivibrator is required in a 16-pin surface-mount package. It is suitable for designs needing HC/UH logic compatibility and low power consumption. Verify that the external timing components can achieve the desired pulse width, noting the minimum specification constraints. Ensure the operating voltage range aligns with the system requirements for CMOS logic levels.

Part Context

This part belongs to the 74HC4538 family of monostable multivibrators. Rochester Electronics typically sources and distributes these components from various original manufacturers. The MM74HC4538M-G variant specifically denotes the SOIC-16 package configuration. It serves as a replacement or alternative source for standard industrial timing ICs used in digital electronics.

Replacement Considerations

The MM74HC4538MX is a comparable variant noted in public comparisons. Verify pin compatibility and electrical characteristics against the specific datasheet before substitution.