HEF4521BT-Q100J

Counter Dividers Overview

The HEF4521BT-Q100J is a 24-stage frequency divider and oscillator manufactured by Nexperia, housed in an SO16 (SOT109-1) package. It comprises a chain of 24 toggle flip-flops with an asynchronous master reset input. The device supports three modes: crystal oscillator, external oscillator buffer, or RC oscillator. It operates within a supply voltage range of 3 V to 15 V and is qualified to AEC-Q100 Grade 3 for automotive applications. Operating temperature ranges from -40 °C to +85 °C.

Counter Dividers Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 3 standards
• Integrated crystal, external, and RC oscillator capabilities
• High noise immunity with fully static operation
• ESD protection exceeding 2000 V HBM and 1000 V CDM

Counter Dividers Applications

• Automotive electronic systems requiring high reliability
• Frequency division circuits
• Oscillator designs using crystals or RC networks

Counter Dividers Procurement Notes

Verify the specific suffix Q100J corresponds to the required AEC-Q100 Grade 3 qualification and SO16 packaging. Confirm that the operating environment remains within the specified -40 °C to +85 °C temperature range and 3 V to 15 V supply limits. Ensure unused inputs are properly terminated to VDD or VSS to maintain stable operation.

Counter Dividers Selection Notes

Select this component when a 24-stage binary counter with integrated oscillator functionality is required. It is suitable for designs needing robust ESD protection and compliance with automotive quality standards. Consider the propagation delay characteristics relative to the load capacitance and supply voltage during timing analysis.

Counter Dividers Part Context

This part belongs to the HEF4521B-Q100 family of CMOS logic devices produced by Nexperia. It is designed as a specialized counter and oscillator solution within the broader portfolio of automotive-grade logic ICs. The product adheres to JEDEC standard JESD 13-B for standardized symmetrical output characteristics.

Counter Dividers Replacement Considerations

HEF4521BT-Q100