HEF4541BT-Q100Y

Programmable Timers And Oscillators Overview

The HEF4541BT-Q100Y is a programmable timer from Nexperia, qualified to AEC-Q100 Grade 1 for automotive applications. It integrates a 16-stage binary counter, an RC oscillator, and power-on reset logic. The device operates on a single supply voltage ranging from 3 V to 15 V. External components RTC and CTC set the oscillator frequency between 1 Hz and 100 kHz, or an external clock can be applied to the RS input. The counter divides the frequency by 2^8, 2^10, 2^13, or 2^16 based on address inputs A0 and A1. It features low quiescent power dissipation and high noise immunity.

Programmable Timers And Oscillators Feature Summary

• Automotive qualification per AEC-Q100 (Grade 1) with operation from -40 °C to +125 °C
• Integrated 16-stage binary counter with selectable division ratios (2^8, 2^10, 2^13, 2^16)
• Wide supply voltage range of 3.0 V to 15.0 V with CMOS low power dissipation
• ESD protection exceeding 2000 V (HBM) and 1000 V (CDM)

Programmable Timers And Oscillators Applications

• Automotive timing circuits requiring AEC-Q100 compliance
• Programmable delay generation using external RC components
• Frequency division in digital systems

Programmable Timers And Oscillators Procurement Notes

Verify that the ordering suffix 'Y' corresponds to the specific tape and reel packaging configuration defined in the manufacturer's current catalog. Confirm the package type is SO14 (SOT108-1). Ensure the design accounts for the required ambient temperature range up to +125 °C and the total power dissipation derating of 10.1 mW/K above 100 °C.

Programmable Timers And Oscillators Selection Notes

Select this component when an integrated programmable timer with automotive grade reliability is needed. The oscillation frequency is determined by external resistor (RTC) and capacitor (CTC) values, recommended to be within 10 kΩ to 1 MΩ and ≥ 100 pF respectively. Ensure unused inputs are connected to VDD, VSS, or another input to maintain static operation characteristics.

Programmable Timers And Oscillators Part Context

This part belongs to the HEF4541B-Q100 family of programmable timers manufactured by Nexperia. It is designed as a robust solution for timing applications in harsh environments, specifically targeting the automotive sector due to its AEC-Q100 Grade 1 qualification. The device replaces discrete timer solutions by integrating the counter, oscillator, and reset logic into a single SO14 package.

Programmable Timers And Oscillators Replacement Considerations

The HEF4541BT,118 is a non-automotive version of this device. When substituting, verify if the application requires the extended temperature range (-40 °C to +125 °C) and AEC-Q100 qualification provided by the Q100 suffix. Pinout and electrical specifications are identical, but environmental ratings differ.