Nexperia USA Inc. HEF4077BT-Q100J

Overview

HEF4077BT-Q100 from Nexperia is a quad 2-input EXCLUSIVE-NOR gate IC qualified to AEC-Q100 Grade 3, operating from -40 °C to +85 °C with supply voltage range 3.0 V to 15.0 V. It delivers symmetrical CMOS output characteristics, high noise immunity, and static operation - used in automotive body control modules for logic-level signal inversion and bus arbitration.

For engineers reviewing the HEF4077BT-Q100 datasheet, HEF4077BT-Q100 pinout, HEF4077BT-Q100 application, or HEF4077BT-Q100 equivalent, key selection criteria include its wide VDD range (3–15 V), guaranteed propagation delay ≤75 ns at 5 V/50 pF, AEC-Q100 qualification, and SO14 package compatibility with legacy 4000-series logic designs.

Technical Context

The HEF4077BT-Q100 implements four independent 2-input XNOR gates using CMOS technology, each with clamped inputs enabling safe interfacing to voltages exceeding VDD via current-limiting resistors. Its functional table defines output HIGH only when both inputs match (L/L or H/H), supporting equality detection and parity generation.

It operates fully statically with no minimum clock or input transition rate requirement. Propagation delays scale predictably with load capacitance (e.g., tPHL = 48 ns + 0.55 ns/pF × CL at VDD = 5 V), and output drive strength is specified across 5 V, 10 V, and 15 V rails with IOL ≥ 0.36 mA at 5 V and VOL ≤ 0.05 V.

Key Specifications

Pinout & Package

HEF4077BT-Q100 is housed in a plastic small outline package (SO14) per SOT108-1 standard: 14-pin, 3.9 mm body width, 1.27 mm lead pitch, surface-mount compatible.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad XNOR gate applications.

Compared with CD4077BM96 and 74HC86PW,118, the HEF4077BT-Q100 uniquely combines AEC-Q100 Grade 3 qualification, integrated input clamping, and true XNOR functionality in SO14 - eliminating redesign effort for automotive logic consolidation.

Availability

HEF4077BT-Q100 is available at Aetrix Electronics and suitable for automotive body electronics, infotainment system standby logic, and power management sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for HEF4077BT-Q100 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 leading Dutch semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with global manufacturing and R&D centers focused on automotive-grade reliability.

The HEF4077BT-Q100 belongs to Nexperia's automotive-qualified 4000-series logic family, designed specifically to replace legacy CMOS logic in safety-critical vehicle subsystems while maintaining pin and functional compatibility.

FAQ

Is HEF4077BT-Q100 pin-compatible with standard HEF4077B variants?

Yes - HEF4077BT-Q100 uses the same SO14 (SOT108-1) package and identical pinout as non-automotive HEF4077B devices. All 14 pins retain identical functions, including VDD (pin 14), VSS (pin 7), and gate I/O assignments. No PCB layout change is required for drop-in replacement in existing designs.

Can HEF4077BT-Q100 operate reliably at 12 V in automotive battery environments?

Yes - it is fully characterized from 3.0 V to 15.0 V, with parametric ratings verified at 5 V, 10 V, and 15 V. At 12 V, VOH remains ≥11.95 V and VOL ≤ 0.05 V under IOL = 0.9 mA, meeting automotive load-switching and sensor interface requirements without external regulation.

What is the maximum capacitive load the outputs can drive while maintaining timing specs?

The datasheet specifies propagation delay up to CL = 50 pF at 5 V (tPHL ≤ 75 ns). For heavier loads, delay increases linearly: e.g., at CL = 100 pF and VDD = 5 V, tPHL ≈ 102.5 ns. Output drive capability remains stable up to 100 pF, beyond which signal integrity degradation may occur without buffering.

Does HEF4077BT-Q100 require external pull-up or pull-down resistors on unused inputs?

No - unused inputs must be tied to VDD or VSS to prevent floating states, but no external resistors are needed due to internal clamping diodes and CMOS input structure. Direct connection ensures deterministic logic levels and avoids increased power consumption or oscillation risk inherent in high-impedance inputs.