HEF4528BT,653

Multivibrators Overview

The HEF4528BT,653 is a dual retriggerable-resetable monostable multivibrator from the Nexperia HEF4000 series. It operates within a supply voltage range of 3 V to 15 V and functions across an ambient temperature range of -40 °C to +85 °C. The device features two independent channels, each with active LOW clear (nCD), active HIGH (nB), and active LOW (nA) inputs. Output pulse duration is determined by external timing components connected to nREXT/CEXT and nCEXT pins. Propagation delays vary by supply voltage; for example, at 5 V, tPHL ranges from 113 ns to 280 ns, while at 15 V, it ranges from 27 ns to 70 ns.

Multivibrators Feature Summary

• Fully static operation with wide supply voltage compatibility
• CMOS low power dissipation and high noise immunity
• Retriggerable and resetable functionality via dedicated control inputs
• ESD protection exceeding 2000 V (HBM) and 1000 V (CDM)

Multivibrators Applications

• Non-retriggerable monostable multivibrator circuits
• Timing delay generation using external RC networks
• Pulse width modulation applications

Multivibrators Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure package and tape-and-reel specifications match design requirements. Confirm that the component version aligns with the latest product data sheet revision to avoid discrepancies in pinning or electrical characteristics during final integration.

Multivibrators Selection Notes

Select this component when a dual-channel monostable solution is required within standard CMOS logic families. Ensure the external timing resistor and capacitor values fall within the recommended operating conditions specified in the datasheet. Verify that the load capacitance on outputs does not exceed limits that would degrade propagation delay performance beyond system tolerances.

Multivibrators Part Context

This part belongs to the HEF4528B family, which includes variants such as the HEF4528BT-Q100 for automotive qualification. The HEF4528BT variant utilizes an SO16 plastic small outline package (SOT109-1). It is distinct from other logic ICs like shift registers or counters within the broader Nexperia portfolio.

Multivibrators Replacement Considerations

HEF4528BT-Q100