NXP Semiconductors HEF4000BP,652

Overview

HEF4000BP,652 from NXP Semiconductors (formerly Philips) is a dual 3-input NOR gate and single inverter IC in the HEF4000B LOCMOS logic family. It operates at supply voltages of 5 V, 10 V, or 15 V; delivers propagation delays as low as 20 ns at 15 V (I7→O3); features fully buffered outputs for high noise immunity; and is used in digital control logic, reset sequencing, and discrete logic reconstruction in industrial timing circuits.

For engineers reviewing the HEF4000BP,652 datasheet, HEF4000BP,652 pinout, HEF4000BP,652 application, or HEF4000BP,652 equivalent, key selection considerations include its dual NOR + inverter function set, 14-lead DIL plastic package (SOT27-1), unbuffered inverter stage usable as analog amplifier, LOCMOS DC/AC characteristics, and compatibility with legacy 4000-series system designs requiring TTL- or CMOS-level interfacing.

Technical Context

The HEF4000BP,652 integrates two independent 3-input NOR gates (I1–I3→O1; I4–I6→O2) and one unbuffered inverter stage (I7→O3). Its LOCMOS process enables rail-to-rail input voltage tolerance, low static current, and predictable propagation delay scaling with load capacitance and supply voltage.

Unlike standard 4000B variants, the I7/O3 stage is explicitly characterized for analog use: gain vs. VDD (Fig.4), transconductance gfs vs. VDD (Fig.8), and biasable operation per Fig.6 test setup - enabling linear amplification without external bias components.

Key Specifications

Pinout & Package

HEF4000BP,652 uses a 14-lead dual in-line plastic package (SOT27-1), compliant with JEDEC MS-001. Pin numbering follows standard DIL orientation with notch-left identification.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual NOR + inverter logic applications.

Compared with CD4001BE and MC14001BDR2G, the HEF4000BP,652 uniquely integrates dual 3-input NORs plus an analog-capable unbuffered inverter in a single 14-pin DIP - reducing component count by up to 3 devices and enabling mixed-signal functions impossible with standard 4000B variants.

Availability

HEF4000BP,652 is available at Aetrix Electronics and suitable for industrial control sequencing, legacy system logic reconstruction, analog signal conditioning, and low-power oscillator core applications requiring stable component supply and long-term obsolescence mitigation.

Supply support for HEF4000BP,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

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Philips' pioneering logic and analog design heritage.

The HEF4000B family was engineered for robust, low-power digital control in harsh environments - emphasizing rail-to-rail operation, wide VDD tolerance, and noise-immune buffered outputs for factory automation and instrumentation.

FAQ

What logic functions does the HEF4000BP,652 implement?

The HEF4000BP,652 implements two independent 3-input NOR gates (pins 1–3→4 and 5–7→4) and one unbuffered inverter (pin 9→10). Unlike generic 4000B parts, it provides this exact combination in a single 14-pin DIP. The NOR outputs are fully buffered; the inverter stage is explicitly characterized for analog gain and transconductance per Philips Application Information Figs 4–8.

Can the HEF4000BP,652 be used as an analog amplifier?

Yes - the I7/O3 inverter stage (pin 9→10) is documented in the HEF4000B datasheet for analog use: Fig.4 shows voltage gain vs. VDD, Fig.8 plots forward transconductance gfs, and Fig.6 gives the recommended bias test setup. At 12 V supply, it delivers ~10× voltage gain with sub-10 µA quiescent current, making HEF4000BP,652 suitable for low-power sensor offset amplification.

What is the maximum operating supply voltage for HEF4000BP,652?

The HEF4000BP,652 supports a supply voltage range of 3 V to 15 V, as confirmed in the AC Characteristics table and Family Specifications. At 15 V, propagation delay for the I7→O3 path is 20 ns (max), and dynamic power dissipation follows P = 28,700 fi + Σ(foCL) × VDD². Operation above 15 V is not characterized and may damage the device.

Is the HEF4000BP,652 pin-compatible with other 4000-series NOR gate ICs?

No - the HEF4000BP,652 has a unique pinout optimized for dual 3-input NOR + inverter functionality. Pins 11–13 are NC, unlike quad 2-input NORs (e.g., CD4001) which use all 14 pins. Substituting HEF4000BP,652 into a CD4001 footprint would leave inputs unconnected and outputs misrouted; redesign is required for functional equivalence.

Does HEF4000BP,652 require external pull-up or pull-down resistors on unused inputs?

No - all inputs (pins 1–3, 5–7, 9) are CMOS and must be actively driven HIGH or LOW; floating inputs cause increased supply current and potential oscillation. The datasheet specifies no internal pull-ups/pull-downs. For unused NOR inputs, tie to VDD or VSS; for unused inverter input (I7), tie to VDD or VSS depending on required output state - never leave floating. This applies strictly to HEF4000BP,652.