Nexperia USA Inc. HEF40106BT,652

Overview

HEF40106BT,652 from Nexperia is a hex inverting Schmitt trigger IC with six independent CMOS buffer stages, each featuring hysteresis (VT+ = 3.7 V, VT− = 3.0 V at VDD = 10 V), wide supply range (3.0–15.0 V), and operation up to +125 °C in SO14 package. It enables robust waveform shaping and noise-immune signal conditioning in industrial timing circuits.

For engineers reviewing the HEF40106BT,652 datasheet, HEF40106BT,652 pinout, HEF40106BT,652 application, or HEF40106BT,652 equivalent, key selection criteria include Schmitt input hysteresis voltage (0.7 V min at 10 V), propagation delay (35 ns typ at 10 V/50 pF), output drive capability (±1.3 mA at 10 V), and SO14 thermal derating (10.1 mW/K above 100 °C).

Technical Context

The HEF40106BT,652 implements six identical inverting Schmitt-trigger buffers using standard CMOS technology, with input clamp diodes enabling safe interfacing to voltages exceeding VDD when used with current-limiting resistors. Each stage provides symmetrical VOH/VOL (≥9.95 V / ≤0.05 V at 10 V) and operates fully statically.

Its transfer characteristics define precise positive- and negative-going thresholds (e.g., VT+ = 5.8 V, VT− = 4.5 V typ at VDD = 10 V), yielding 1.3 V typical hysteresis. Dynamic performance is characterized at CL = 50 pF with extrapolation formulas for tPHL/tPLH (e.g., 29 ns + 0.23 ns/pF × CL at 10 V).

Key Specifications

Pinout & Package

HEF40106BT,652 is housed in a plastic small outline package (SO14, SOT108-1) with 14 leads and 3.9 mm body width, rated for surface-mount reflow assembly and capable of dissipating 500 mW at ≤100 °C (derates 10.1 mW/K above).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverting Schmitt trigger applications.

Compared with CD40106BE and SN74LV14APWR, HEF40106BT,652 uniquely balances 3–15 V operation, 35 ns speed at 10 V, built-in input clamping, and −40 °C to +125 °C qualification - making it the only choice for industrial multirail timing where robustness and flexibility are co-prioritized.

Availability

HEF40106BT,652 is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, and power supply sequencing circuits requiring stable component supply across extended temperature ranges and mixed-voltage designs.

Supply support for HEF40106BT,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 specializing in high-performance, energy-efficient logic, analog, and discrete components, with leadership in automotive-grade reliability and industrial-grade robustness.

The HEF40106BT,652 belongs to Nexperia's legacy CMOS logic family designed for noise-immune signal conditioning in harsh industrial and automotive-adjacent environments where voltage flexibility and thermal resilience are critical.

FAQ

Can HEF40106BT,652 operate reliably at 15 V supply?

Yes - the HEF40106BT,652 is fully specified for continuous operation at 15 V, with VOH ≥14.95 V and VOL ≤0.05 V at 15 V/25 °C. Its absolute maximum VDD is +18 V, and static supply current remains below 30 μA at 15 V/125 °C, confirming robust high-voltage functionality.

Does HEF40106BT,652 require external pull-up or pull-down resistors on inputs?

No - inputs are CMOS with inherent high impedance (>100 MΩ) and integrated clamp diodes. External resistors are only needed when interfacing to voltages exceeding VDD (e.g., 24 V sensor outputs), where a series current limiter (e.g., 10 kΩ) protects the internal diodes per datasheet Section 1.

What is the minimum load capacitance for stable oscillator operation?

Stable astable multivibrator operation requires CL ≥ 10 pF per inverter stage to ensure predictable timing; the datasheet specifies dynamic characterization at 50 pF, and Figure 10 notes that parasitic capacitance <10 pF may cause edge-induced oscillation without added CP. For reliable design, use ≥22 pF ceramic capacitors.

Is HEF40106BT,652 pin-compatible with older HEF40106B variants?

Yes - HEF40106BT,652 uses the SO14 (SOT108-1) package with identical pinout to all HEF40106B variants in that package, including the obsolete HEF40106BP (SOT27-1) and HEF40106BTT (TSSOP14). Pin functions, numbering, and electrical behavior are fully consistent per datasheet Sections 6.1 and 6.2.