HEC4538BT,118

Multivibrators Overview

The HEC4538BT,118 is a dual precision monostable multivibrator manufactured by NXP Semiconductors. It features two independent retriggerable and resettable circuits within a single package. Each channel includes active LOW trigger/retrigger input (I0), active HIGH trigger/retrigger input (I1), an overriding active LOW direct reset input (CD), output (O), and complement output (O). External timing components Ct and Rt connect to dedicated pins CTC and RCTC. The device exhibits typical pulse width variation over the temperature range of ±0.2%.

Multivibrators Feature Summary

• Dual precision monostable multivibrator architecture with independent channels
• Retriggerable and resettable functionality for flexible timing control
• Active LOW direct reset input for immediate circuit override
• Low typical pulse width variation over temperature range

Multivibrators Applications

• Pulse generation and shaping in digital systems
• Timing delay circuits requiring precise duration control
• Debouncing switches or contacts in industrial interfaces
• One-shot triggering mechanisms in automation logic

Multivibrators Procurement Notes

Verify the specific suffix '118' against official NXP documentation to confirm tape-and-reel packaging specifications and quantity per reel. Ensure compatibility with standard CMOS logic voltage levels and operating temperature ranges defined in the datasheet before finalizing procurement orders.

Multivibrators Selection Notes

Select this component when dual-channel monostable operation is required in a compact form factor. Consider its retriggerable nature for applications needing extended pulse widths upon repeated triggers. Verify that external resistor and capacitor values align with the desired timing accuracy and temperature stability requirements.

Multivibrators Part Context

This part belongs to the HEF4538B family of dual precision monostable multivibrators from NXP Semiconductors. It is designed for general-purpose timing applications where reliable pulse generation is critical. The device complements other logic families by providing precise, adjustable timing intervals with minimal external component count.

Multivibrators Replacement Considerations

HEF4538B is a compatible alternative offering identical dual precision monostable functionality. HEC4538 variants may also serve as substitutes depending on packaging and suffix requirements. Verify pinout and electrical characteristics match before substitution.