Texas Instruments CD74HC154M96

Overview

CD74HC154M96 from Texas Instruments is a high-speed CMOS 4-to-16-line decoder/demultiplexer with dual enable inputs (E1, E2), operating from 2V to 6V, supporting -55°C to +125°C industrial/military temperature range, and housed in a 24-pin SOIC package for space-constrained logic routing in embedded control systems.

For engineers reviewing the CD74HC154M96 datasheet, CD74HC154M96 pinout, CD74HC154M96 application, or CD74HC154M96 equivalent, key selection criteria include propagation delay (30–53 ns at VCC = 6V/4.5V), fanout capability (10 LSTTL loads), dual-enable demux functionality, and SOIC tape-and-reel packaging for automated assembly.

Technical Context

The CD74HC154M96 implements combinational logic decoding using four address inputs (A0–A3) to select one of sixteen active-low outputs (Y0–Y15); both enable inputs must be low for decoding to occur, otherwise all outputs remain high. Its HC-series CMOS architecture ensures rail-to-rail output swing and low static current draw.

It supports cascading via enable inputs-E1 can serve as data input while E2 is held low-and exhibits balanced tPLH/tPHL propagation delays (≤53 ns max over full temperature range) and fast transition times (≤19 ns at 4.5V), enabling reliable timing in synchronous digital subsystems.

Key Specifications

Pinout & Package

CD74HC154M96 is packaged in a 24-pin SOIC (DW) with 0.300-inch body width, RoHS-compliant NiPdAu/Sn lead finish, MSL Level-1 rating, and tape-and-reel delivery (2000 pcs/reel).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-to-16 decoder/demultiplexer applications.

Compared with CD74HC154M and SN74HC154DR, the CD74HC154M96 uniquely combines extended temperature qualification (-55°C to +125°C), SOIC-DW mechanical compatibility, and tape-and-reel readiness - making it the sole option for high-reliability, volume-manufactured systems requiring full military-grade operation.

Availability

CD74HC154M96 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, military data acquisition systems, and test equipment signal routing requiring stable component supply across extended temperature ranges and automated manufacturing support.

Supply support for CD74HC154M96 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 delivering analog, embedded processing, and logic solutions with emphasis on reliability, longevity, and industrial/military qualification.

The CD74HC154M96 belongs to TI's legacy HC-series high-speed CMOS logic family, designed specifically for robust, low-power decoding and demultiplexing in mission-critical embedded control and instrumentation applications.

FAQ

What is the maximum clock frequency supported by CD74HC154M96 for reliable decoding?

The CD74HC154M96 does not operate on a clock; it is a combinational logic device. Its usable switching rate is determined by propagation delay: at VCC = 6V and CL = 50 pF, tPHL/tPLH ≤ 45 ns, supporting address changes up to ~11 MHz for clean setup/hold margins. For CD74HC154M96, ensure input transitions meet specified rise/fall time limits (≤400 ns at 6V) to avoid metastability.

Can CD74HC154M96 directly drive LEDs without external transistors?

No - CD74HC154M96 outputs are CMOS buffers rated for ±25 mA DC sink/source per pin, but its active-low outputs (Y0–Y15) are designed for logic-level interfacing, not direct LED current sourcing. Driving even a standard 2 mA LED requires external current-limiting resistors and careful thermal design; for higher-current loads, use dedicated LED drivers or MOSFETs. The CD74HC154M96 itself remains optimal for control signaling, not power switching.

Is CD74HC154M96 pin-compatible with CD74HCT154M96?

Yes - CD74HC154M96 and CD74HCT154M96 share identical 24-pin SOIC (DW) packaging, pinout, and functional block diagram. However, they differ electrically: CD74HC154M96 operates from 2V–6V with CMOS input thresholds, while CD74HCT154M96 is TTL-input-compatible (4.5V–5.5V only, VIH ≥ 2.0V). Swapping them requires verifying supply voltage and upstream logic family compatibility to prevent misoperation.

Does CD74HC154M96 require pull-up resistors on its outputs?

No - CD74HC154M96 features totem-pole CMOS outputs capable of actively driving both high and low logic states. Its Y0–Y15 outputs are active-low, meaning they assert logic 0 when selected and high-impedance is not involved. Pull-ups would conflict with the output driver and are unnecessary unless interfacing with open-collector systems - which CD74HC154M96 does not support natively.

What is the significance of the "96" suffix in CD74HC154M96?

The "96" suffix in CD74HC154M96 denotes tape-and-reel packaging: the device is supplied in a 24 mm-wide carrier tape with 2000 units per reel, optimized for automated surface-mount assembly. This distinguishes it from tube-packaged variants like CD74HC154M. The "G4.A" variant (e.g., CD74HC154M96G4.A) indicates additional TI internal handling codes but retains identical electrical and mechanical specifications as CD74HC154M96.