Nexperia USA Inc. HEF4002BT,652

Overview

HEF4002BT,652 from Nexperia is a dual 4-input NOR gate logic IC in SO14 package, operating from 3 V to 15 V supply, with fully buffered outputs for high noise immunity and stable switching across temperature (−40 °C to +85 °C). It delivers symmetrical output drive (±1.7 mA at 5 V), low input leakage (<1 µA), and propagation delays as low as 20 ns at 15 V with 50 pF load - used in industrial control sequencing and digital signal conditioning circuits.

For engineers reviewing the HEF4002BT,652 datasheet, HEF4002BT,652 pinout, HEF4002BT,652 application, or HEF4002BT,652 equivalent, this page provides verified pin functions, real-world timing behavior at multiple VDD levels, static/dynamic electrical specs per JEDEC JESD13-B, and validated alternatives for 4-input NOR logic in through-hole and surface-mount designs.

Technical Context

The HEF4002BT,652 implements two independent CMOS NOR gates, each accepting four inputs with standardized HIGH/LOW thresholds (VIH = 11.0 V min at VDD = 15 V; VIL = 4.0 V max). Its static operation eliminates dynamic power concerns at DC, while its clamped I/O (±10 mA) and ESD-protected inputs ensure robustness in noisy environments.

Propagation delay scales predictably with supply voltage and load capacitance: tpd = 12 + 0.16 × CL (ns) at 15 V, enabling precise timing budgeting in multi-stage combinational logic. Output transition times (tTHL/tTLH) match propagation delay closely, confirming minimal skew between rising/falling edges under matched loads.

Key Specifications

Pinout & Package

HEF4002BT,652 uses the SOT108-1 (SO14) plastic small-outline package: 14-pin, 3.9 mm body width, gull-wing leads, standard JEDEC MO-153 footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-input NOR gate applications.

Compared with CD4002BE and 74HC4002PW, HEF4002BT,652 uniquely balances wide VDD tolerance (3–15 V), industrial temperature range, and SO14 SMT compatibility - making it the only option for mixed-voltage legacy upgrades requiring drop-in reliability without redesign.

Availability

HEF4002BT,652 is available at Aetrix Electronics and suitable for industrial PLC input decoding, legacy system bus arbitration, and power sequencing enable logic requiring stable component supply across extended temperature and voltage ranges.

Supply support for HEF4002BT,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, reliable logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The HEF4002BT,652 belongs to Nexperia's HEF4000B series of high-voltage CMOS logic devices, engineered specifically for robust operation in industrial control, instrumentation, and legacy system upgrades where wide supply range and temperature resilience are critical.

FAQ

Can HEF4002BT,652 operate reliably at 12 V supply?

Yes. The device is fully specified across 3 V to 15 V, with parametric ratings confirmed at 5 V, 10 V, and 15 V. At 12 V, propagation delay is interpolated at ~22 ns (CL = 50 pF), VOH remains ≥11.95 V, and VOL stays ≤0.05 V - all within guaranteed limits per datasheet Table 6 and Table 7.

What happens if an input is left unconnected?

Unused inputs must be tied to VDD, VSS, or another driven input. Floating inputs cause unpredictable output states, elevated supply current (up to 50 mA per gate), and potential latch-up due to internal parasitic transistor biasing - violating absolute maximum ratings and risking permanent damage.

Is HEF4002BT,652 pin-compatible with older HEF4002B variants?

Yes. The HEF4002BT,652 uses the same SOT108-1 (SO14) package and identical pinout as all HEF4002B-series devices. Pin assignments for inputs (2–5, 9–12), outputs (1, 13), VSS (7), VDD (14), and n.c. (6, 8) are unchanged across revisions per datasheet Table 2 and Figure 3.

Does HEF4002BT,652 support mixed-voltage interfacing (e.g., 5 V inputs driving a 15 V-powered device)?

No. Inputs must remain within −0.5 V to VDD + 0.5 V per absolute maximum ratings. A 5 V signal applied to a 15 V-powered HEF4002BT,652 violates VI < VDD + 0.5 V (15.5 V), risking latch-up. Level translation (e.g., resistor divider or dedicated translator) is required for cross-voltage domain interfacing.