Nexperia USA Inc. HEF4050BT-Q100J

Overview

HEF4050BT-Q100 from Nexperia is an automotive-grade hex non-inverting buffer IC with overvoltage-tolerant inputs (up to 15.0 V), operating across 3.0 V–15.0 V supply, qualified to AEC-Q100 Grade 3 (−40 °C to +85 °C), and housed in a SO16 (SOT109-1) package. It enables HIGH-to-LOW level shifting in mixed-voltage automotive subsystems such as body control modules and sensor interface circuits.

For engineers reviewing the HEF4050BT-Q100 datasheet, HEF4050BT-Q100 pinout, HEF4050BT-Q100 application, or HEF4050BT-Q100 equivalent, key selection criteria include input overvoltage tolerance, TTL/DTL load drive capability (2× standard TTL), propagation delay at 5/10/15 V, static output voltage levels (VOH/VOL), and automotive qualification status.

Technical Context

The HEF4050BT-Q100 implements six independent CMOS non-inverting buffer stages with symmetrical output drive and fully static operation. Each channel features input clamping diodes enabling 15.0 V overvoltage tolerance while powered from lower supply rails - critical for interfacing legacy 5 V logic with newer 3.3 V or 12 V domains.

Its dynamic behavior is defined by voltage-dependent propagation delays (e.g., tPHL = 12 ns + 0.05 ns/pF·CL at VDD = 15 V) and transition times optimized for low-noise switching. Input leakage remains ≤ ±1.0 μA at 15 V, and output drive supports up to 24 mA sink current at 15 V, meeting LOCMOS-to-DTL/TTL conversion requirements.

Key Specifications

Pinout & Package

HEF4050BT-Q100 is packaged in a plastic small outline (SO16) package per JEDEC MS-012, designated SOT109-1, with 16 leads, 3.9 mm body width, and standard gull-wing lead form for surface-mount assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar non-inverting buffer applications.

Compared with SN74LVTH162244DGGR and 74HC4050D,653, the HEF4050BT-Q100 uniquely combines AEC-Q100 Grade 3 qualification, 15 V overvoltage-tolerant inputs, and 3–15 V supply flexibility - making it the sole option for robust, single-chip HIGH-to-LOW level translation in production automotive electronics.

Availability

HEF4050BT-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, engine management systems, and lighting control units requiring stable component supply across extended temperature and voltage ranges.

Supply support for HEF4050BT-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 global semiconductor expert delivering high-performance, reliable components for automotive, industrial, and consumer applications, with leadership in logic, MOSFETs, and ESD protection.

The HEF4050B-Q100 belongs to Nexperia's automotive-qualified logic family, designed specifically to simplify voltage domain bridging in modern vehicle electronics while meeting stringent AEC-Q100 reliability and environmental requirements.

FAQ

Is HEF4050BT-Q100 pin-compatible with standard 4050 buffers like CD4050BE?

Yes - HEF4050BT-Q100 uses the same SO16 pinout as industry-standard CD4050 and 74HC4050 devices, with identical 1A–6A input and 1Y–6Y output assignments. However, its overvoltage-tolerant inputs and AEC-Q100 qualification differentiate it functionally and for automotive use cases.

Can HEF4050BT-Q100 operate with VDD = 3.3 V while accepting 5 V inputs?

Yes - its inputs tolerate up to 15.0 V regardless of VDD setting. At VDD = 3.3 V, VIH is 2.3 V (min), allowing reliable recognition of 5 V logic HIGH signals without damage or level-shifting circuitry.

What is the maximum capacitive load this device can drive reliably?

The datasheet specifies dynamic characteristics up to CL = 50 pF. Propagation delay increases linearly with load capacitance (e.g., tPHL = 12 ns + 0.05 ns/pF × CL at 15 V). For stable operation beyond 50 pF, verify timing margins using the extrapolation formulas in Table 7.

Does HEF4050BT-Q100 support hot insertion or live hot-swap operation?

No - while inputs are overvoltage-tolerant, the device lacks explicit hot-swap protection features such as slew-rate limiting or power-on reset. It must be powered before applying input signals to avoid undefined states or latch-up risk during power sequencing.