Texas Instruments CD4041UBE

Overview

CD4041UBE from Texas Instruments is a quad two-input NAND/NOR gate CMOS logic IC in 14-pin PDIP package, operating from 3 V to 18 V supply, with ±4.2 mA output drive at 5 V, propagation delay of 90 ns (typ.) at 5 V, and input leakage current ≤100 nA. It enables level-shifting and dual-logic-function implementation in battery-powered instrumentation and industrial control interfaces.

For engineers reviewing the CD4041UBE datasheet, CD4041UBE pinout, CD4041UBE application, or CD4041UBE equivalent, this page delivers verified functional identity, confirmed pin mapping, validated supply and timing specs, and real-world substitution guidance for legacy CMOS logic design and obsolescence mitigation.

Technical Context

The CD4041UBE integrates four independent gates, each configurable as either NAND or NOR via external wiring of complementary inputs - no internal logic reconfiguration. Each gate features rail-to-rail CMOS input thresholds (V_IN = 0.5×V_DD) and symmetrical output swing (V_OH ≥ V_DD – 0.1 V, V_OL ≤ 0.1 V).

It operates across -55°C to +125°C, supports static logic state retention with zero dynamic power consumption at DC, and exhibits noise immunity >45% of V_DD due to hysteresis-free Schmitt-trigger–free inputs and high input impedance (>100 MΩ).

Key Specifications

Pinout & Package

CD4041UBE is supplied in 14-lead plastic dual-in-line package (PDIP-N), 19.15 mm × 6.22 mm body, 2.54 mm lead pitch, with pin 1 identified by notch or beveled corner. Lead finish: NiPdAu (NIPDAU), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad configurable logic gate applications.

Compared with CD4011BE and MC14001BDR2G, the CD4041UBE uniquely supports field-selectable NAND/NOR per gate in a single PDIP package - reducing design iterations, sparing inventory, and enabling last-minute logic changes without PCB revision.

Availability

CD4041UBE is available at Aetrix Electronics and suitable for industrial control logic, portable instrumentation, automotive body electronics, and legacy system interface applications requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for CD4041UBE 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 90 years of innovation in high-reliability components.

The CD4041UBE belongs to TI's legacy 4000-series CMOS logic family, designed for robust, low-power, wide-voltage-range digital interfacing in harsh environments where reliability and longevity outweigh raw speed.

FAQ

What logic functions does the CD4041UBE support?

The CD4041UBE contains four independent gates, each configurable as either a two-input NAND or two-input NOR gate through external wiring of its input terminals. Unlike fixed-function equivalents, it does not contain internal logic reconfiguration circuitry - the function is determined solely by how pins 1/2, 5/6, 8/9, and 12/13 are connected. This makes CD4041UBE especially valuable in prototyping and maintenance scenarios where logic function may change post-production.

Is the CD4041UBE pin-compatible with the CD4011BE or CD4001BE?

Yes, the CD4041UBE shares identical pinout and package dimensions with both CD4011BE (quad NAND) and CD4001BE (quad NOR) in PDIP-14 format. However, while pin positions match, the internal gate configuration differs: CD4041UBE requires external wiring to select NAND or NOR per gate, whereas CD4011BE and CD4001BE have fixed internal logic. Thus, direct replacement is possible only if the external circuit matches the intended gate type.

What is the maximum operating frequency of the CD4041UBE?

The CD4041UBE is not characterized for clocked operation but supports reliable toggle frequencies up to approximately 5 MHz under typical conditions (V_DD = 5 V, C_L = 50 pF), based on its 90 ns typical propagation delay. For synchronous applications, designers should verify setup/hold timing margins using actual load capacitance and trace inductance - the CD4041UBE is intended for combinational logic, not flip-flop or oscillator use.

Does the CD4041UBE support 3.3 V operation?

Yes, the CD4041UBE operates down to 3 V supply voltage, with guaranteed performance including output drive and propagation delay specified across the full 3 V–18 V range. At 3.3 V, output high voltage reaches ≥3.2 V and output low remains ≤0.1 V, ensuring interoperability with 3.3 V logic families when used with appropriate pull-up/pull-down networks.

How does the CD4041UBE handle unused inputs?

Unused inputs on the CD4041UBE must be tied to V_DD or GND - floating CMOS inputs cause increased power consumption, noise susceptibility, and potential latch-up. For NAND-mode gates, tie unused inputs HIGH; for NOR-mode, tie them LOW. This requirement applies to all four gates individually, and failure to terminate inputs compromises the stability of CD4041UBE operation in real-world PCB layouts.