Nexperia USA Inc. HEF4070BT,652

Overview

HEF4070BT,652 from Nexperia is a quad 2-input CMOS EXCLUSIVE-OR gate in SO14 package, operating from 3 V to 15 V supply, with propagation delays as low as 25 ns at 15 V and ±10 mA output drive capability. It features input clamp diodes enabling overvoltage-tolerant interfacing, and is specified for industrial temperature range (-40 °C to +85 °C). It serves as a logic-level comparator or parity generator in digital control subsystems.

For engineers reviewing the HEF4070BT,652 datasheet, HEF4070BT,652 pinout, HEF4070BT,652 application, or HEF4070BT,652 equivalent, key selection criteria include supply voltage flexibility (3–15 V), guaranteed noise immunity, symmetrical output drive, JEDEC JESD13-B compliance, and SO14 surface-mount compatibility for space-constrained logic routing.

Technical Context

The HEF4070BT implements four independent XOR gates using standard CMOS process technology, each with fully static operation and rail-to-rail input tolerance via integrated clamp diodes. Its logic function follows strict truth table behavior: nY = (nA ∧ ¬nB) ∨ (¬nA ∧ nB), with no internal latching or feedback.

Propagation delay is supply-voltage dependent and load-capacitance scalable - e.g., tPHL = 21 ns + (0.16 ns/pF)×CL at VDD = 15 V - enabling precise timing predictability across mixed-voltage system interfaces. Output transition times are similarly characterized and extrapolatable per CL.

Key Specifications

Pinout & Package

HEF4070BT,652 is housed in a plastic small outline package (SO14), SOT108-1 variant, with 14 leads, 3.9 mm body width, and 1.27 mm lead pitch. Pin 1 is marked by a notch or dot; pin numbering follows standard SO14 counterclockwise convention.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar XOR gate applications.

Compared with CD4070BE and 74HC86D, the HEF4070BT,652 uniquely balances wide supply range (3–15 V), integrated overvoltage protection, and industrial temperature rating - making it optimal for mixed-voltage industrial control and retrofit designs where reliability and interface flexibility outweigh raw speed.

Availability

HEF4070BT,652 is available at Aetrix Electronics and suitable for industrial control panels, embedded instrumentation, legacy system upgrades, and digital test equipment requiring stable component supply across extended temperature and voltage ranges.

Supply support for HEF4070BT,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, high-reliability logic, analog, and discrete components, with roots in NXP's logic division and headquartered in Nijmegen, Netherlands.

The HEF4070BT belongs to Nexperia's legacy-compatible CMOS logic family, designed specifically for industrial and automotive-adjacent applications demanding robustness, wide voltage operation, and long-term supply stability.

FAQ

Can HEF4070BT,652 operate reliably at 3.3 V?

Yes - the datasheet specifies VDD min = 3 V, and static parameters (VIH/VIL, VOH/VOL) are guaranteed across the full -40 °C to +85 °C range at 3 V. Propagation delay increases to ~175 ns (typ.) at 3 V/50 pF, but functionality remains fully compliant.

Does HEF4070BT,652 require external pull-up or pull-down resistors on unused inputs?

No - unused inputs may be tied directly to VDD or VSS. The device has no floating-input sensitivity due to CMOS structure and internal threshold symmetry; however, tying to defined rails prevents noise coupling and minimizes dynamic current.

What is the maximum capacitive load the outputs can drive without degrading timing?

At VDD = 15 V, the datasheet guarantees timing up to 50 pF (see Table 10). Driving >50 pF increases propagation delay linearly per CL (e.g., +0.16 ns/pF), but output voltage levels remain valid up to 100 pF with minor VOL/VOH degradation within spec limits.

Is HEF4070BT,652 pin-compatible with older HEF4070BP (SOT27-1)?

No - HEF4070BP used a 14-lead DIP package (SOT27-1), while HEF4070BT uses SO14 (SOT108-1). Pin functions are identical, but physical layout, thermal profile, and soldering requirements differ; PCB footprint is not interchangeable.