Nexperia USA Inc. HEF4069UBT,652

Overview

HEF4069UBT,652 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 (±1.1 mA at 5 V), and guaranteed operation from −40 °C to +125 °C - used in crystal oscillator circuits, relaxation oscillators, and analog amplifier biasing.

For engineers reviewing the HEF4069UBT,652 datasheet, HEF4069UBT,652 pinout, HEF4069UBT,652 application, or HEF4069UBT,652 equivalent, this device serves as a low-power, wide-VDD logic inverter for timing generation, signal inversion, and linear analog gain stages where rail-to-rail swing and input overvoltage tolerance are required.

Technical Context

The HEF4069UBT implements six identical unbuffered CMOS inverters in a single SO14 package, each with direct gate-to-drain topology enabling analog operation in linear region when biased via high-value resistors. Its input clamp diodes allow safe interfacing to voltages beyond VDD using external current-limiting resistors.

Propagation delay ranges from 15 ns to 90 ns depending on VDD and load capacitance (CL), with typical tPHL/tPLH of 25 ns at 15 V/50 pF. Output transition times scale linearly with CL, and voltage gain peaks near 7.5 at VDD = 15 V per Fig. 9.

Key Specifications

Pinout & Package

HEF4069UBT,652 is housed in a plastic small outline package (SO14), SOT108-1, with 14 leads and 3.9 mm body width. Pin 1 is marked by a notch or dot; the package is RoHS-compliant and lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CD4069UBM96, HEF4069UBT trades extended temperature range for tighter industrial qualification and superior ESD robustness (HBM >2000 V vs. typical 2000 V). Against 74HC04D, it sacrifices speed for analog versatility and wide-VDD flexibility - making it uniquely suited for oscillator and mixed-signal applications.

Availability

HEF4069UBT,652 is available at Aetrix Electronics and suitable for crystal oscillator design, relaxation oscillator implementation, and analog amplifier biasing requiring stable component supply across automotive under-hood, industrial PLC, and medical instrumentation programs.

Supply support for HEF4069UBT,652 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 essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET solutions optimized for reliability and energy efficiency.

The HEF4069UBT belongs to Nexperia's legacy CMOS logic family designed specifically for robust, wide-supply-voltage analog-digital hybrid applications - including timing generation, signal conditioning, and interface protection in harsh environments.

FAQ

Can HEF4069UBT,652 be used as a linear amplifier?

Yes - its unbuffered CMOS structure allows stable DC biasing in the transition region. With a high-value feedback resistor (e.g., 330 kΩ) from output to input, it operates as a transconductance amplifier with gain scaling linearly with VDD (up to 7.5 at 15 V), as confirmed in Fig. 9 and Fig. 11 of the datasheet.

What is the maximum capacitive load HEF4069UBT,652 can drive reliably?

At 15 V supply, HEF4069UBT,652 maintains ≤25 ns propagation delay with up to 50 pF load (Table 6); beyond that, delay increases linearly per tPHL = 7 ns + (0.16 ns/pF) × CL. For reliable oscillation or fast edge integrity, keep total load (including PCB trace and probe capacitance) ≤50 pF.

Does HEF4069UBT,652 support input voltages above VDD?

Yes - integrated input clamp diodes allow safe operation with VI up to VDD + 0.5 V or down to −0.5 V, provided external current-limiting resistors restrict IIK to ≤±10 mA (Table 3). This enables direct interface to higher-voltage sensors or legacy buses without level shifters.

How does temperature affect propagation delay in HEF4069UBT,652?

Propagation delay increases with temperature: at 5 V, tPHL rises from 45 ns (−40 °C) to 90 ns (+125 °C); at 15 V, it shifts from 15 ns to 25 ns over the same range (Table 5). This monotonic drift is well-characterized and usable in temperature-compensated oscillator designs where relative stability matters more than absolute timing.