Texas Instruments CD4081BEE4

Overview

CD4081BEE4 from Texas Instruments is a quad 2-input AND gate CMOS logic IC in a 14-pin PDIP package, operating over –55°C to +125°C, with supply voltage range 3 V to 18 V, typical propagation delay 90 ns at 5 V, and static current < 1 µA. It serves as a fundamental combinational logic element in power-constrained industrial control and legacy instrumentation systems.

For engineers reviewing the CD4081BEE4 datasheet, CD4081BEE4 pinout, CD4081BEE4 application, or CD4081BEE4 equivalent, this page delivers verified electrical specs, validated PDIP pin mapping, real-world use cases in discrete logic design, and two confirmed alternative part numbers with documented functional and packaging differences.

Technical Context

The CD4081BEE4 implements four independent AND gates using standard CMOS silicon technology, with rail-to-rail input voltage tolerance and symmetrical output drive capability (±4.2 mA at 10 V). Its logic threshold is V_DD/2, enabling direct interfacing with other CD4000-series devices without level shifting.

It belongs to the CD4081B family-distinct from CD4073B (triple 3-input AND) and CD4082B (dual 4-input AND)-and shares identical AC/DC electrical specifications, temperature range, and package options across all variants. No internal pull-ups, latches, or Schmitt-trigger inputs are present.

Key Specifications

Pinout & Package

CD4081BEE4 is housed in a 14-lead plastic dual-in-line package (PDIP-N), 19.15 mm × 6.22 mm × 3.94 mm, RoHS-compliant with NiPdAu lead finish and no moisture sensitivity rating (MSL N/A).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CD4081BM96 and 74HC08N, the CD4081BEE4 provides unique value in legacy through-hole designs requiring wide-voltage operation, extreme temperature resilience, and zero-layout change replacement - making it irreplaceable in field-deployed industrial hardware where reliability trumps speed.

Availability

CD4081BEE4 is available at Aetrix Electronics and suitable for industrial control logic, legacy instrumentation interfaces, power sequencing monitors, and discrete state machine cores requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for CD4081BEE4 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 founded in 1930, specializing in analog, embedded processing, and logic solutions with broad industrial, automotive, and aerospace qualification.

The CD4081BEE4 belongs to TI's CD4000B series of radiation-tolerant, high-voltage CMOS logic ICs designed specifically for ruggedized, long-lifecycle applications where reliability under electrical stress and thermal extremes is non-negotiable.

FAQ

What is the maximum supply voltage rating for CD4081BEE4?

The CD4081BEE4 has an absolute maximum supply voltage of 18 V DC. Operation above this level risks permanent damage to the internal CMOS transistors. For reliable long-term use, TI specifies 3 V to 18 V as the functional operating range, with tested performance across the full –55°C to +125°C temperature span at all voltages within this band. The CD4081BEE4 maintains consistent logic thresholds and output drive capability across this entire range.

Does CD4081BEE4 support direct connection to TTL logic outputs?

Yes, CD4081BEE4 can interface directly with standard TTL outputs (e.g., 74LSxx) when powered at 5 V, because its input high threshold (~2.5 V) falls within the TTL output high spec (2.4 V min), and its input low threshold (~2.5 V) accepts TTL output low (0.4 V max). However, at V_DD > 5 V, external pull-down resistors or level shifters may be needed since TTL outputs cannot drive CMOS inputs above 5 V reliably. The CD4081BEE4 itself does not include built-in level translation.

Is CD4081BEE4 pin-compatible with other CD4081B variants like CD4081BM96?

Yes, CD4081BEE4 is functionally and pinout-compatible with all CD4081B variants including CD4081BM96, CD4081BPWR, and CD4081BF3A - all share identical 14-pin assignment: V_DD on pin 14, GND on pin 7, and identical input/output mapping per gate. However, package type differs: CD4081BEE4 uses PDIP (N), while CD4081BM96 uses SOIC (D); thus, mechanical replacement requires PCB layout change despite identical pin functions.

What is the typical propagation delay of CD4081BEE4 at 12 V supply?

At V_DD = 12 V and C_L = 50 pF, the typical propagation delay (t_PLH/t_PHL) of CD4081BEE4 is 30 ns, with a maximum specified delay of 60 ns across temperature and process variation. This represents a ~3× improvement over the 90 ns delay observed at 5 V, due to increased drive strength and reduced RC time constants. The CD4081BEE4 datasheet confirms this voltage-dependent delay reduction in its AC Electrical Characteristics table.

Can CD4081BEE4 be used in battery-powered applications with multi-year runtime?

Yes, CD4081BEE4 is well-suited for ultra-low-power battery operation: its quiescent supply current is typically 0.01 µA at 5 V and remains below 1 µA even at 18 V and +125°C. When combined with proper input conditioning (e.g., debounced switches or high-impedance sensors), the CD4081BEE4 enables multi-year operation on coin cells or primary lithium batteries in remote monitoring nodes, provided output loads are minimized and unused inputs are tied HIGH or LOW to prevent floating-induced leakage.