NXP Semiconductors HEF4011UBP,652

Overview

HEF4011UBP,652 from NXP Semiconductors (formerly Philips) is a quadruple 2-input unbuffered NAND gate IC in 14-lead plastic DIL (SOT27-1) package, operating from 3 V to 15 V supply, with propagation delays as low as 17 ns at VDD = 15 V and CL = 50 pF, used in digital logic control, oscillator circuits, and analog amplifier applications.

For engineers reviewing the HEF4011UBP,652 datasheet, HEF4011UBP,652 pinout, HEF4011UBP,652 application, or HEF4011UBP,652 equivalent, key selection considerations include unbuffered CMOS architecture, supply voltage flexibility (3–15 V), input capacitance of 10 pF, output transition time dependence on load capacitance, and suitability for mixed-signal timing and relaxation oscillator designs.

Technical Context

The HEF4011UBP,652 implements four independent 2-input NAND gates using unbuffered LOCMOS technology, where each gate consists of split n-channel transistors for matched input behavior. Its transfer characteristics are supply-voltage dependent, with threshold levels shifting across 5 V, 10 V, and 15 V operation.

Propagation delay and output transition times scale linearly with load capacitance per published formulas (e.g., tPLH = 9 ns + 0.16 ns/pF × CL at VDD = 15 V). Dynamic power dissipation follows P = 25,000 fi + Σ(foCL) × VDD² (µW) at 15 V, supporting low-frequency digital and quasi-analog functions without internal buffering.

Key Specifications

Pinout & Package

HEF4011UBP,652 is housed in a 14-lead dual-in-line plastic package (SOT27-1), with 0.3-inch body width and standard through-hole pitch. Pin 7 is VSS (GND), Pin 14 is VDD, and all inputs/outputs are TTL- and CMOS-compatible within its supply range.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HEF4011UBP,652, CD4011BE offers identical functionality and drop-in compatibility, while MC14011BDR2G delivers tighter timing consistency and superior ESD immunity - both retain unbuffered operation essential for analog oscillator and amplifier use cases.

Availability

HEF4011UBP,652 is available at Aetrix Electronics and suitable for industrial control panels, legacy system repairs, sensor interface modules, and low-power timing circuits requiring stable component supply across extended product lifecycles.

Supply support for HEF4011UBP,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.

The HEF4011UBP,652 belongs to the legacy LOCMOS HE4000B logic family, designed specifically for robust, wide-supply-voltage digital and mixed-signal functions in cost-sensitive and long-lifecycle systems.

FAQ

What is the supply voltage range supported by the HEF4011UBP,652?

The HEF4011UBP,652 operates over a supply voltage range of 3 V to 15 V, enabling direct use in both low-voltage battery systems and higher-voltage industrial controls. Its unbuffered LOCMOS architecture ensures consistent logic thresholds and gain scaling across this full range, as confirmed in Figures 4–6 and AC Characteristics tables of the January 1995 Philips datasheet.

Can the HEF4011UBP,652 be used as an analog amplifier?

Yes - the HEF4011UBP,652 can function as a linear amplifier when one input is biased to VDD or ground, leveraging its unbuffered structure and controllable gain (Fig.13, Fig.16). This capability is explicitly documented in the Application Information section and distinguishes it from buffered logic families. The HEF4011UBP,652's analog use requires careful DC biasing and load management per Figure 16 schematic.

Is the HEF4011UBP,652 pin-compatible with other 4000-series NAND gates?

Yes - the HEF4011UBP,652 uses the industry-standard 14-pin DIP layout for quad 2-input NAND gates, matching CD4011BE and MC14011BDR2G pin-for-pin. All share identical pin assignments: VDD (14), VSS (7), and symmetric input/output pairing across gates 1–4. This compatibility is verified in Philips SOT27-1, TI PDIP-14, and Onsemi SOIC-14 package outlines.

What is the input capacitance of the HEF4011UBP,652 and why does it matter?

The HEF4011UBP,652 has a typical input capacitance of 10 pF per gate, as specified in the AC Characteristics table. This value directly affects RC time constants in oscillator circuits (e.g., Fig.9), influences high-frequency signal integrity, and determines fan-out limitations in cascaded logic. Accurate modeling of CIN is essential for predicting oscillation frequency and stability in analog-digital hybrid designs using the HEF4011UBP,652.

How does propagation delay vary with load capacitance in the HEF4011UBP,652?

Propagation delay in the HEF4011UBP,652 increases linearly with load capacitance, per published formulas: e.g., tPLH = 9 ns + 0.16 ns/pF × CL at VDD = 15 V. These equations (page 3, datasheet) allow precise delay prediction in oscillator and timing circuits - critical for designing stable relaxation oscillators where CL includes stray and intentional capacitance, as shown in Fig.9 and Fig.10.