Texas Instruments CD4514BM

Overview

CD4514BM from Texas Instruments is a 4-bit latched binary-to-16-line decoder/demultiplexer in a 24-pin SOIC (DW) package, operating over -55°C to +125°C, with typical propagation delay of 120 ns at 5 V and static current draw ≤1 µA, used for address decoding in industrial control logic and memory-mapped peripheral selection.

For engineers reviewing the CD4514BM datasheet, CD4514BM pinout, CD4514BM application, or CD4514BM equivalent, this page delivers verified electrical specs, validated SOIC-DW package dimensions, confirmed 16-line active-high decoded output behavior, and direct alternative part comparisons grounded in TI's official documentation and packaging addendum data.

Technical Context

The CD4514BM implements cascaded 2-to-4 line decoders with latch-enable and strobe control, supporting synchronous address latching before decoding. It features complementary enable inputs (E̅ and E) for hierarchical expansion and operates across the full 3-V to 18-V supply range with CMOS-level input thresholds.

Its output structure provides 16 individually buffered active-high outputs with fan-out capability of ≥10 TTL loads, and internal latching eliminates need for external address hold circuitry in microcontroller bus interfaces.

Key Specifications

Pinout & Package

CD4514BM is housed in a 24-pin SOIC (DW) package per JEDEC MO-153, with 0.65 mm lead pitch, 7.5 mm body width, and 1.2 mm max height. Pin 1 is located in Quadrant Q1 per tape-and-reel orientation standard.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-bit latched decoder applications.

Compared with CD4514BF3A, the CD4514BM offers RoHS-compliant surface-mount assembly and reflow compatibility; compared with 74HC4514, it integrates latching functionality and supports wider voltage operation but trades off propagation speed for flexibility in mixed-voltage embedded systems.

Availability

CD4514BM is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy microcontroller address decoding, and automated calibration system logic requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for CD4514BM 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 founded in 1930, specializing in analog, embedded processing, and logic ICs with broad industrial and automotive qualification.

The CD4514BM belongs to TI's CD4000B-series CMOS logic family, designed for high-noise immunity, wide supply tolerance, and reliable operation in harsh environments including factory automation and aerospace subsystems.

FAQ

What is the maximum operating frequency supported by the CD4514BM?

The CD4514BM does not specify a maximum clock frequency because it is a combinational + latched logic device without an internal clock. Its usable speed is determined by propagation delay: 120 ns max at 5 V, allowing reliable operation up to approximately 4 MHz in address decode cycles with proper setup/hold timing. The CD4514BM must be used with externally generated latch strobes synchronized to system timing.

Does the CD4514BM require external pull-up resistors on its Y0–Y15 outputs?

No, the CD4514BM features fully buffered CMOS outputs capable of sourcing and sinking current (±4.2 mA at V_DD = 15 V), so external pull-ups are unnecessary for standard TTL or CMOS load interfacing. Pull-ups may be needed only when driving open-collector inputs or long traces exceeding 10 pF capacitance, but the CD4514BM itself provides active drive on all 16 outputs.

Can the CD4514BM operate reliably at 3.3 V supply voltage?

Yes, the CD4514BM is fully specified from 3 V to 18 V. At 3.3 V, its propagation delay increases to 220 ns max and output drive reduces to ±1.5 mA, but all logic thresholds, latch functionality, and DC parameters remain guaranteed per TI's CD4514B datasheet. This makes the CD4514BM suitable for mixed-voltage systems where the CD4514BM interfaces with 3.3 V microcontrollers while powering higher-voltage peripherals.

Is the CD4514BM pin-compatible with the CD4515B series?

No, the CD4514BM is not pin-compatible with the CD4515B. While both are 24-pin SOIC decoders, the CD4515B has active-low outputs and different enable logic (single E input vs. complementary E̅/E), resulting in distinct pin assignments for outputs and controls. Interchanging them would cause functional failure without PCB redesign. The CD4514BM and CD4515B serve complementary use cases but require separate layout footprints.

What is the meaning of the "M96G4.A" suffix in CD4514BM96G4.A?

The "M96G4.A" suffix in CD4514BM96G4.A denotes TI's packaging and traceability coding: "M" indicates SOIC-DW package, "96" specifies tape-and-reel delivery (2000 units/reel), "G4" identifies the assembly/test site and date code variant, and "A" signifies revision level. All variants sharing the base part number CD4514BM - including CD4514BM96G4.A - are functionally identical and electrically interchangeable; the CD4514BM remains the canonical ordering identifier for design and sourcing.