Nexperia USA Inc. HEF4069UBTT,118

Overview

HEF4069UBTT from Nexperia is a hex unbuffered CMOS inverter IC operating from 3.0 V to 15.0 V supply, featuring six independent inverting gates with input clamp diodes, symmetrical output drive (±2.4 mA at 15 V), and guaranteed operation from −40 °C to +125 °C - used in oscillator circuits, analog amplifiers, and digital signal inversion where low-power static operation and wide voltage tolerance are required.

For engineers reviewing the HEF4069UBTT datasheet, HEF4069UBTT pinout, HEF4069UBTT application, or HEF4069UBTT equivalent, this device is selected for unbuffered inverter functions requiring rail-to-rail input compatibility, high noise immunity, JEDEC JESD13-B compliance, and TSSOP14 packaging for space-constrained PCB layouts.

Technical Context

The HEF4069UBTT implements six independent unbuffered inverters using standard CMOS topology, each with integrated input clamp diodes enabling safe interfacing to voltages beyond VDD when used with current-limiting resistors. Its unbuffered architecture yields asymmetric propagation delays (e.g., 15–25 ns at 15 V, CL = 50 pF) and enables analog use via biasing into linear region.

It supports three parametric voltage grades (5 V, 10 V, 15 V), exhibits typical voltage gain of ~7.5 at 15 V (Fig. 9), and maintains stable static characteristics across temperature: VIH = 12.5 V min and VOL = 0.05 V max at 15 V/125 °C per IOL = 2.4 mA.

Key Specifications

Pinout & Package

TSSOP14 plastic thin shrink small outline package (SOT402-1); 14-lead, 4.4 mm body width, 0.65 mm lead pitch; thermally enhanced for 7.3 mW/K derating above 81 °C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar unbuffered inverter applications.

Compared with CD4069UBM96, HEF4069UBTT offers superior thermal performance in compact layouts; versus 74HC04PW,118, it trades speed for wider voltage range, input clamping, and analog flexibility-making it uniquely suited for mixed-signal oscillator and interface applications.

Availability

HEF4069UBTT is available at Aetrix Electronics and suitable for oscillator circuits, analog amplifiers, crystal timing modules, and digital signal inversion requiring stable component supply across industrial temperature ranges and long-lifecycle production.

Supply support for HEF4069UBTT 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 logic, discrete, and MOSFET solutions optimized for efficiency, miniaturization, and robustness in industrial, automotive, and consumer electronics.

The HEF4069UBTT belongs to Nexperia's legacy CMOS logic family designed for wide-voltage, high-noise-immunity applications including timing generation, signal conditioning, and mixed-signal interfacing in harsh environments.

FAQ

Can HEF4069UBTT be used as an analog amplifier?

Yes - its unbuffered CMOS structure allows DC biasing into the linear region using a high-value feedback resistor (e.g., 330 kΩ). At VDD = 15 V, typical voltage gain reaches ~7.5 (Fig. 9), making it suitable for low-frequency sensor amplification or audio preamplification without external transistors.

What is the maximum capacitive load for stable oscillator operation?

For reliable astable oscillator performance, total load capacitance (including stray and crystal load caps) should remain ≤50 pF. Propagation delay increases linearly with CL (e.g., +0.16 ns/pF at 15 V), and excessive CL (>100 pF) risks startup failure or duty-cycle distortion due to reduced slew rate.

Does HEF4069UBTT support 3.3 V logic levels?

No - while it operates down to 3.0 V supply, its VIH threshold is 0.7 × VDD (min 2.1 V at 3 V), which falls below standard 3.3 V CMOS HIGH level (≥2.3 V). It is not guaranteed to reliably recognize 3.3 V logic inputs unless VDD ≥ 3.3 V and VIH margin is verified per Table 5.

How does the input clamp diode affect external resistor selection?

When interfacing to voltages > VDD, a series current-limiting resistor must restrict IIK to ≤±10 mA (absolute max). For example, connecting a 24 V signal to VDD = 15 V requires R ≥ (24 V − 15.5 V) / 10 mA = 850 Ω to stay within clamp diode rating and avoid damage.