Nexperia USA Inc. HEF4040BT-Q100J

Overview

HEF4040BT-Q100J from Nexperia is a 12-stage binary ripple counter IC with asynchronous master reset (MR), clock input (CP) triggered on HIGH-to-LOW transition, and twelve fully buffered outputs (Q0–Q11). It operates from 3.0 V to 15.0 V, supports automotive-grade temperature range (−40 °C to +85 °C), and features overvoltage-tolerant inputs up to 15 V for level-shifting applications.

For engineers reviewing the HEF4040BT-Q100J datasheet, HEF4040BT-Q100J pinout, HEF4040BT-Q100J application, or HEF4040BT-Q100J equivalent, this device serves as a low-power, static CMOS counter for frequency division, time delay, and control sequencing in automotive ECUs, body electronics, and powertrain subsystems where AEC-Q100 Grade 3 compliance is required.

Technical Context

This device implements a cascaded chain of 12 static toggle flip-flops, advancing only on the falling edge of CP. Each stage divides its input frequency by two, yielding Qn = CP / 2ⁿ, with Q11 delivering a 4096:1 division ratio. The MR input is asynchronous, active-HIGH, and forces all outputs LOW independent of clock timing.

Its CMOS architecture enables wide supply voltage operation (3–15 V), high noise immunity, and tolerance to slow input edges. Input clamping and ESD protection (HBM >2000 V, CDM >1000 V) support robust deployment in electrically noisy automotive environments without external protection circuitry.

Key Specifications

Pinout & Package

HEF4040BT-Q100J is housed in a plastic small outline package (SO16), SOT109-1, with 16 leads and 3.9 mm body width. Pin 1 is marked by a notch or dot; pin numbering follows standard SO16 convention.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar binary ripple counter applications.

Compared with CD4040BE and SN74HC4040PWR, the HEF4040BT-Q100J uniquely combines AEC-Q100 Grade 3 qualification, 15 V input tolerance, and full 12-stage ripple functionality - making it the only drop-in solution for production automotive timing where reliability, voltage flexibility, and qualification are jointly required.

Availability

HEF4040BT-Q100J is available at Aetrix Electronics and suitable for automotive body electronics, engine management systems, and ADAS camera synchronization requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.

Supply support for HEF4040BT-Q100J includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, analog, and MOSFET solutions, with deep expertise in automotive-qualified components and efficient manufacturing.

The HEF4040BT-Q100J belongs to Nexperia's automotive-qualified 4000B series, designed specifically for robust, low-power timing functions in harsh automotive environments where extended temperature operation and long-term reliability are mandatory.

FAQ

Is HEF4040BT-Q100J pin-compatible with legacy HEF4040B variants?

Yes - HEF4040BT-Q100J uses the same SO16 (SOT109-1) package and identical pinout as standard HEF4040B devices, including NC on pin 1, Q11 on pin 2, and MR on pin 11. No PCB redesign is needed when upgrading to the AEC-Q100-qualified version.

Can HEF4040BT-Q100J operate reliably at 3.3 V supply?

Yes - the device is fully specified down to 3.0 V, with guaranteed VIH ≥ 2.31 V and VOL ≤ 0.05 V at 3.3 V and 25 °C. Static and dynamic parameters remain valid across the entire 3–15 V range, enabling direct use with 3.3 V microcontrollers.

What is the minimum pulse width required on the MR input?

The minimum MR HIGH pulse width is 20 ns at 15 V, 30 ns at 10 V, and 40 ns at 5 V (per Table 6). This ensures reliable asynchronous reset across all supply voltages, even with fast microcontroller GPIO toggling.

Does HEF4040BT-Q100J require external pull-up or pull-down resistors on CP or MR?

No - inputs are CMOS with negligible leakage (±1.0 μA max at 15 V), and the device has no internal pull resistors. External biasing is only needed if the driving source is open-drain or high-impedance; otherwise, direct connection to active drivers is sufficient.