NXP Semiconductors HEF40106BTT,112

Overview

HEF40106BTT,112 from Nexperia is a hex inverting Schmitt trigger IC with six independent CMOS buffer stages, each featuring hysteresis (VT+ = 4.9 V, VT− = 4.0 V at VDD = 15 V), wide supply range (3.0–15.0 V), and operation up to +125 °C. It enables reliable waveform shaping and noise-immune signal conditioning in industrial timing circuits, motor control feedback paths, and sensor interface front-ends.

For engineers reviewing the HEF40106BTT,112 datasheet, HEF40106BTT,112 pinout, HEF40106BTT,112 application, or HEF40106BTT,112 equivalent, key selection criteria include input hysteresis voltage (VH = 0.9 V min at 15 V), propagation delay (30 ns max at 15 V, CL = 50 pF), output drive capability (±2.4 mA at 15 V), and TSSOP14 package thermal derating (7.3 mW/K above 81 °C).

Technical Context

The HEF40106BTT implements six identical inverting Schmitt-trigger buffers with symmetrical CMOS output stages and integrated input clamp diodes for overvoltage tolerance. Each stage provides defined positive-going (VT+) and negative-going (VT−) switching thresholds, enabling robust edge detection in noisy environments.

Its static characteristics include rail-to-rail output swing (VOH ≥ 14.95 V, VOL ≤ 0.05 V at VDD = 15 V), low input leakage (±0.1 μA max at 15 V), and input capacitance of 7.5 pF. Dynamic behavior is characterized by load-dependent propagation delays governed by tPHL = 22 ns + (0.16 ns/pF)×CL at 15 V.

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; exposed pad not present; RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC14DR and MC14584BDG, the HEF40106BTT,112 uniquely balances 15 V operation, sub-30 ns propagation, and integrated input clamping-making it optimal for new industrial designs requiring both noise immunity and mixed-voltage interfacing.

Availability

HEF40106BTT,112 is available at Aetrix Electronics and suitable for industrial motor control, factory automation I/O modules, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for HEF40106BTT,112 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-enhancing components, delivering high-performance logic, discrete, and MOSFET solutions with emphasis on reliability and manufacturability.

The HEF40106BTT,112 belongs to Nexperia's legacy-compatible 4000B-series logic family, designed specifically for industrial and automotive applications demanding wide supply range, high noise immunity, and extended temperature operation.

FAQ

What is the maximum recommended load capacitance for stable operation at 15 V?

The datasheet specifies dynamic characteristics up to 50 pF with guaranteed timing (tPHL ≤ 30 ns). Exceeding 50 pF increases propagation delay nonlinearly per tPHL = 22 ns + (0.16 ns/pF)×CL; for reliable 10 MHz oscillation, keep CL ≤ 40 pF and add series termination if driving PCB traces >5 cm.

Can HEF40106BTT,112 safely interface a 24 V sensor signal?

Yes - its input clamp diodes allow direct connection via a series current-limiting resistor. To limit IIK to ≤±10 mA at 24 V, use R ≥ (24 V − 15 V)/10 mA = 900 Ω; 1 kΩ is standard. Ensure power dissipation in the resistor stays below 0.25 W under worst-case continuous overvoltage.

How does thermal derating affect power dissipation in TSSOP14 package?

For SOT402-1 (TSSOP14), total power dissipation derates linearly at 7.3 mW/K above +81 °C. At +125 °C ambient, Ptot drops from 500 mW to 500 mW − (44 K × 7.3 mW/K) = 179 mW. This requires limiting simultaneous active outputs or reducing switching frequency in high-temp enclosures.

Is there a functional difference between HEF40106BTT,112 and HEF40106BT,118?

Both share identical electrical specifications and logic function. The sole difference is package: HEF40106BTT,112 uses TSSOP14 (SOT402-1), while HEF40106BT,118 uses SO14 (SOT108-1). Thermal resistance differs (θJA = 137 K/W vs. 100 K/W), making the SO14 version preferable for high-power-density layouts.