Texas Instruments CD4515BM96

Overview

CD4515BM96 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 NIPDAU lead finish, RoHS-compliant, and rated for Level-1 unlimited reflow. It enables high-voltage CMOS logic selection in industrial control panels and address decoding for memory-mapped peripherals.

For engineers reviewing the CD4515BM96 datasheet, CD4515BM96 pinout, CD4515BM96 application, or CD4515BM96 equivalent, this page delivers verified package dimensions, functional truth table alignment, supply voltage tolerance (3V–18V), propagation delay (120 ns max at 10 V), and direct substitution guidance against legacy CD4515B variants.

Technical Context

The CD4515BM96 implements dual 4-bit latching with separate enable (EN) and strobe (STROBE) controls, supporting cascaded 1-of-16 decoding across multiple devices. Its internal structure includes complementary MOS transistors with buffered outputs, ensuring stable high-impedance off-state and rail-to-rail output swing.

It operates within the CD4000B logic family's electrical specifications: input thresholds scale with V_DD, noise margin exceeds 45% of V_DD, and static current remains below 1 µA at 25°C - enabling low-power address decoding in battery-backed systems and harsh-environment telemetry nodes.

Key Specifications

Pinout & Package

CD4515BM96 uses a 24-pin SOIC (DW) package measuring 15.4 mm × 7.5 mm × 2.3 mm (max height), with pin 1 located in quadrant Q1 per tape-and-reel orientation. The package features gull-wing leads, NIPDAU surface finish, and JEDEC MO-153 compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CD4515BF3A and CD4515BM, the CD4515BM96 provides assured SMT manufacturability, full RoHS compliance, and documented reflow reliability - making it the only recommended choice for production releases targeting IPC-A-610 Class 2/3 assembly standards.

Availability

CD4515BM96 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive engine control units, medical imaging signal routing, and avionics display multiplexing requiring stable component supply across multi-year production cycles.

Supply support for CD4515BM96 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 and embedded processing solutions for industrial, automotive, and personal electronics markets.

The CD4515BM96 belongs to TI's legacy CD4000B logic family, designed specifically for high-voltage, low-power, temperature-resilient digital decoding in mission-critical infrastructure where reliability outweighs speed.

FAQ

What is the maximum clock frequency supported by CD4515BM96?

The CD4515BM96 does not operate on a clock signal - it is an asynchronous latched decoder. Its performance is defined by propagation delay: 120 ns maximum at V_DD = 10 V. This corresponds to a practical upper limit of ~5 MHz for address transition rates in stable bus environments. For CD4515BM96, timing depends solely on STROBE edge rate and input stability, not periodic clocking.

Does CD4515BM96 support 3.3 V logic-level inputs?

Yes, CD4515BM96 accepts 3.3 V logic-level inputs when powered at ≥5 V, because its CMOS input thresholds scale with V_DD (typically 50% V_DD). At V_DD = 5 V, a 3.3 V HIGH input exceeds the 2.5 V threshold. However, CD4515BM96 cannot be powered at 3.3 V while driving 5 V-tolerant loads - its output swing follows V_DD, so full 5 V swing requires V_DD ≥ 5 V.

Can CD4515BM96 replace CD4514B in existing designs?

No - CD4515BM96 and CD4514B serve different functions: CD4515BM96 is a 1-of-16 decoder with latched inputs, while CD4514B is a 1-of-16 decoder with transparent (non-latched) inputs. Swapping them causes timing mismatches and unintended output toggling during address transitions. The CD4515BM96 is functionally aligned only with other CD4515x variants, not CD4514x.

Is CD4515BM96 pin-compatible with CD4515BM?

Yes - CD4515BM96 and CD4515BM share identical SOIC-24 (DW) package dimensions, pin numbering, and pin functions. Both follow JEDEC MO-153 mechanical standards and use the same 0.75 mm lead pitch. However, CD4515BM96 adds RoHS compliance, Level-1 reflow rating, and large-tape-and-reel packaging - making it the drop-in manufacturing replacement for the obsolete CD4515BM.

What is the purpose of the STROBE and EN pins on CD4515BM96?

The STROBE pin (Pin 5) is a positive-edge-triggered latch that captures the A0–A3 input values into an internal register; outputs update only after this edge. The EN pin (Pin 6) is an active-high enable that controls output driver state: when EN = LOW, all Y0–Y15 outputs enter high-impedance mode regardless of latch content. This dual-control architecture allows CD4515BM96 to hold decoded states while disabling outputs for bus sharing - a key feature in CD4515BM96's design for time-multiplexed systems.