Texas Instruments CD4041UBPW

Overview

CD4041UBPW from Texas Instruments is a quad two-input NAND gate with Schmitt-trigger inputs, fabricated in CMOS technology, operating over -55°C to +125°C, with 3V–18V supply range and typical propagation delay of 80 ns at 5V, used in noise-immune digital logic interfacing and waveform shaping in industrial control systems.

For engineers reviewing the CD4041UBPW datasheet, CD4041UBPW pinout, CD4041UBPW application, or CD4041UBPW equivalent, this page delivers verified package mapping (TSSOP-14), confirmed Schmitt-trigger hysteresis behavior, absolute maximum ratings, supply voltage tolerance, and direct alternatives for legacy CMOS logic replacement.

Technical Context

The CD4041UBPW implements four independent NAND gates, each with Schmitt-trigger input thresholds enabling robust noise rejection on slow or noisy input signals. Its CMOS construction ensures high input impedance (>10¹² Ω), low static current (<1 µA at 5V), and rail-to-rail output swing.

It operates across a wide V_DD range (3V–18V), with input thresholds scaling proportionally-e.g., V_IN+ ≈ 0.67×V_DD, V_IN− ≈ 0.33×V_DD-and supports fan-out of ≥50 TTL loads at 5V. No internal pull-ups or level-shifting circuitry is present.

Key Specifications

Pinout & Package

TSSOP-14 (PW) package: 4.4 mm × 5.0 mm body, 1.2 mm max height, 0.65 mm lead pitch, exposed thermal pad not electrically connected, RoHS-compliant NiPdAu finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad NAND Schmitt-trigger applications.

Compared with CD4041UBPW, CD4093UBM96 offers identical Schmitt functionality in SOIC-14 but trades speed for package availability, while SN74LV132APW delivers speed and low-voltage operation at the cost of incomplete Schmitt coverage - making CD4041UBPW uniquely suited for full-channel, wide-supply, noise-critical legacy replacements.

Availability

CD4041UBPW is available at Aetrix Electronics and suitable for industrial sensor interface, motor control feedback, and legacy system glue logic requiring stable component supply across extended temperature and wide-voltage operation.

Supply support for CD4041UBPW 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 company headquartered in Dallas, Texas, delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.

The CD4041UB series belongs to TI's legacy CMOS logic product line, designed specifically for high-reliability, wide-temperature, and mixed-voltage digital interfacing in mission-critical industrial and aerospace systems.

FAQ

What is the maximum operating frequency of the CD4041UBPW?

The CD4041UBPW does not specify a maximum clock frequency in its datasheet because it is a combinational logic device without an internal clock. Its usable edge rate is limited by propagation delay: at V_DD = 5V and C_L = 50 pF, t_PD ≤ 80 ns, supporting reliable operation up to approximately 6 MHz for repetitive square-wave inputs. Higher frequencies require verification under actual load and layout conditions.

Is the CD4041UBPW pin-compatible with the CD4093UB?

No, the CD4041UBPW is not pin-compatible with the CD4093UB. While both are quad NAND Schmitt-trigger ICs in 14-pin packages, their pinouts differ: CD4041UBPW assigns inputs/outputs contiguously (e.g., pins 1&2 → gate 1 inputs, pin 3 → output), whereas CD4093UB uses interleaved assignment (e.g., pins 1&2 → gate 1 inputs, pin 3 → output, pin 4 → V_DD). Direct substitution requires PCB modification.

Does the CD4041UBPW support 3.3V logic levels?

Yes, the CD4041UBPW supports 3.3V operation within its specified 3V–18V supply range. At V_DD = 3.3V, input thresholds scale to ~1.1V (V_IN+) and ~0.65V (V_IN−), ensuring compatibility with 3.3V CMOS outputs. However, output VOH/VOL remain rail-referenced, so interfacing to 5V-tolerant inputs may require level translation depending on receiver thresholds.

What is the thermal pad on the CD4041UBPW TSSOP package used for?

According to TI's PW package drawing (PW0014A), the exposed thermal pad on the CD4041UBPW is not electrically connected to any internal node. It serves solely as a mechanical and thermal enhancement feature - soldering it to a large copper pour improves heat dissipation and board-level reliability but introduces no electrical function or requirement for grounding or biasing.

Can the CD4041UBPW replace a 74HC132 in existing designs?

The CD4041UBPW can functionally replace a 74HC132 in many noise-immune logic applications, but not as a drop-in solution. Both provide quad NAND Schmitt triggers, but pinouts differ (74HC132 uses standard 14-pin DIP/SOIC layout; CD4041UBPW uses distinct TSSOP-14 assignment), and CD4041UBPW supports wider V_DD (3–18V vs. 2–6V). Board redesign is required for physical fit and routing.