NXP Semiconductors HEF4093BT/AUJ

Overview

HEF4093BT/AUJ from Nexperia is a quad 2-input NAND Schmitt trigger IC in SO14 (SOT108-1) package, operating from 3.0 V to 15.0 V supply, with hysteresis voltage of 0.7–1.3 V at 15 V, propagation delay as low as 30 ns at 15 V/50 pF, and specified for -40 °C to +125 °C ambient temperature. It enables robust noise-immune signal conditioning in digital timing and waveform shaping circuits.

For engineers reviewing the HEF4093BT/AUJ datasheet, HEF4093BT/AUJ pinout, HEF4093BT/AUJ application, or HEF4093BT/AUJ equivalent, this page delivers verified functional identity, validated SO14 pin mapping, confirmed Schmitt-trigger transfer characteristics (VT+ = 4.7–11 V, VT− = 4–10.3 V at 15 V), thermal and ESD ratings (HBM > 2000 V, CDM > 1000 V), and real-world multivibrator design use cases.

Technical Context

The HEF4093BT/AUJ implements four independent CMOS NAND gates, each with Schmitt-trigger inputs that provide input hysteresis to reject slow-rising/falling noise and eliminate contact bounce or EMI-induced jitter. Each gate accepts inputs up to VDD + 0.5 V thanks to integrated clamp diodes and current-limiting resistor compatibility.

Its static operation supports zero static power draw at DC, while dynamic switching performance is characterized across 5 V, 10 V, and 15 V supply rails - with tPHL/tPLH down to 30 ns and output transition times as fast as 20 ns at 15 V/50 pF. The device complies with JEDEC JESD13-B and operates reliably under industrial and extended-temperature conditions.

Key Specifications

Pinout & Package

HEF4093BT/AUJ is housed in a plastic small outline package (SO14), SOT108-1 variant, with 14 leads and 3.9 mm body width. Pin 1 is index-marked; lead pitch is 1.27 mm; package conforms to JEDEC MS-012.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schmitt-trigger NAND gate applications.

Compared with CD4093BE and 74HC14DT, the HEF4093BT/AUJ uniquely combines SO14 surface-mount compatibility, 3–15 V operation, integrated input clamp diodes, and industrial temperature rating - making it the only option among the three qualified for extended-temperature, mixed-voltage, and overvoltage-resilient designs.

Availability

HEF4093BT/AUJ is available at Aetrix Electronics and suitable for wave shapers, astable/monostable multivibrators, high-impedance signal conditioners, and industrial timing circuits requiring stable component supply across extended temperature ranges.

Supply support for HEF4093BT/AUJ 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 - including logic, discrete, and MOSFET devices - with leadership in reliability, miniaturization, and energy-efficient design.

The HEF4093BT/AUJ belongs to Nexperia's HEF4000B logic family, engineered for robust industrial and automotive-adjacent applications where noise immunity, wide supply tolerance, and extended temperature operation are critical.

FAQ

What is the maximum supply voltage rating for HEF4093BT/AUJ?

The absolute maximum supply voltage (VDD) for HEF4093BT/AUJ is +18 V, per IEC 60134 limiting values. However, the recommended operating range is 3.0 V to 15.0 V. Operation above 15 V is not guaranteed for parametric performance or long-term reliability - sustained use at 18 V may accelerate wear-out mechanisms and is not supported in the datasheet's characterization tables.

Does HEF4093BT/AUJ support operation at 3.3 V?

Yes, HEF4093BT/AUJ is fully specified down to 3.0 V supply voltage. At 3.3 V, it maintains Schmitt-trigger functionality with VT+ ≈ 1.3–2.1 V and VT− ≈ 1.0–1.7 V (extrapolated from 5 V data), and delivers usable output drive (IOL ≥ 0.3 mA). While propagation delay increases versus 5 V operation, it remains functional for low-speed signal conditioning and timing applications.

How does the input hysteresis of HEF4093BT/AUJ improve noise immunity?

The HEF4093BT/AUJ provides 0.4–1.3 V hysteresis (VH) depending on supply voltage - meaning the input must swing at least that much between rising and falling thresholds (e.g., VT+ = 4.7 V, VT− = 4.0 V at 15 V). This prevents multiple output transitions when input signals hover near the switching point due to noise, ripple, or slow edges - a key advantage over standard CMOS NAND gates.

Can HEF4093BT/AUJ inputs be driven above VDD?

Yes - HEF4093BT/AUJ includes integrated input clamp diodes, allowing safe interface to voltages up to VDD + 0.5 V. To protect against excessive current, an external series current-limiting resistor must be used when driving inputs above VDD. This feature enables direct connection to higher-voltage sensors or legacy systems without level-shifting circuitry.

Is HEF4093BT/AUJ automotive-qualified?

No - HEF4093BT/AUJ is not automotive-qualified. Although it is rated for -40 °C to +125 °C ambient temperature and meets industrial reliability standards, Nexperia explicitly states in its legal disclaimers that non-automotive-qualified products like HEF4093BT/AUJ are not tested or warranted for automotive use, including AEC-Q100 qualification or ISO 26262 compliance.