Texas Instruments CD74HC154M96G4

Overview

CD74HC154M96G4 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 industrial temperature range (–55°C to +125°C), featuring 30% noise immunity at VCC = 5V, and delivering 30 ns typical propagation delay at 6V with 50 pF load - used in address decoding for memory expansion and I/O port selection in embedded control systems.

For engineers reviewing the CD74HC154M96G4 datasheet, CD74HC154M96G4 pinout, CD74HC154M96G4 application, or CD74HC154M96G4 equivalent, key selection considerations include its dual-enable demux capability, SOIC-24 package compatibility, wide supply voltage tolerance, guaranteed operation across extreme temperatures, and direct replacement suitability for legacy HC-series 16-output decoders in space-constrained industrial designs.

Technical Context

The CD74HC154M96G4 implements active-low 4-bit binary decoding logic with two independent enable inputs: both E1 and E2 must be low for any output Y0–Y15 to go low; a high on either forces all outputs high. Its architecture supports cascading via enable chaining and demultiplexing by routing data through one enable while holding the other low.

It uses standard CMOS silicon process with balanced rise/fall times, exhibits no latch-up per JEDEC JESD78, and maintains consistent propagation delay (tPLH/tPHL ≤ 45 ns at VCC = 6V, –55°C to +125°C) and transition time (tTLH/tTHL ≤ 19 ns) across full temperature and voltage range - critical for synchronous bus timing integrity.

Key Specifications

Pinout & Package

CD74HC154M96G4 is housed in a 24-pin SOIC (DW) package, 7.5 mm wide, with 1.27 mm pitch, RoHS-compliant NiPdAu lead finish, MSL Level-1 rating, and tape-and-reel packaging (2000 units/reel).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC154DR and CD74HCT154M96, the CD74HC154M96G4 uniquely combines extended temperature support, wide voltage operation, and CMOS input thresholds - making it the sole option for new designs requiring robustness across –55°C to +125°C while maintaining compatibility with 3.3V/5V mixed-signal SoCs.

Availability

CD74HC154M96G4 is available at Aetrix Electronics and suitable for industrial control systems, aerospace avionics, and downhole instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CD74HC154M96G4 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 specializing in analog, embedded processing, and logic ICs, with decades of heritage in high-reliability logic families including the CD74HC series.

The CD74HC154M96G4 belongs to TI's High-Speed CMOS Logic family, designed specifically for low-power, high-noise-immunity decoding and demultiplexing in mission-critical industrial, defense, and automotive systems.

FAQ

What is the maximum clock frequency supported by CD74HC154M96G4 for reliable address decoding?

The CD74HC154M96G4 does not operate on a clock; it is combinational logic. Its maximum usable input toggle rate is determined by propagation delay: at VCC = 6V and –55°C to +125°C, tPLH/tPHL ≤ 45 ns, supporting reliable decoding of address/data buses up to ~22 MHz (1/(2 × 45 ns)). The CD74HC154M96G4 maintains this performance across its full temperature range without derating.

Can CD74HC154M96G4 replace 74LS154 in an existing 5V design?

CD74HC154M96G4 can replace 74LS154 in 5V systems only if input noise margins and fanout requirements are re-evaluated: it has higher VIH (3.15V min at VCC = 4.5V) than LS TTL (2V min), and drives 10 LSTTL loads versus LS154's 20. For drop-in compatibility, use CD74HCT154M96 instead - its TTL-compatible inputs match LS logic thresholds exactly. The CD74HC154M96G4 requires verified VIH/VIL margins in the host system.

What is the meaning of the 'G4' suffix in CD74HC154M96G4?

The 'G4' suffix in CD74HC154M96G4 indicates a specific tape-and-reel packaging variant with NiPdAu (nickel-palladium-gold) lead finish and RoHS-compliant construction, per TI's internal packaging nomenclature. It denotes the same SOIC-24 (DW) die and electrical specs as CD74HC154M96, but with enhanced solderability and reliability for automated SMT assembly. The CD74HC154M96G4 is fully pin- and function-compatible with CD74HC154M96.

Does CD74HC154M96G4 support cascading with other decoders, and how is it implemented?

Yes, CD74HC154M96G4 supports cascading via its dual enable inputs: one device's Y0 output can drive E1/E2 of a second device, while shared A0–A3 lines provide higher-order address bits. For example, two CD74HC154M96G4 units decode 5-bit input (A4 selects between them). This method preserves timing coherence since E1/E2 propagation delay matches address-to-output delay (both ≤45 ns). The CD74HC154M96G4 datasheet explicitly validates this topology in Figure 1.

Is CD74HC154M96G4 suitable for use in safety-critical applications such as automotive ADAS subsystems?

CD74HC154M96G4 is not AEC-Q100 qualified and lacks automotive-specific failure-in-time (FIT) data or ASIL-rated documentation. While its –55°C to +125°C rating meets under-hood temperature requirements, TI offers the automotive-grade CD74HC154QPWRQ1 (Q1 suffix) for ADAS applications. For functional safety compliance, the CD74HC154M96G4 may be used only in non-safety-related auxiliary functions - always verify against ISO 26262 hardware requirements before deployment. The CD74HC154M96G4 itself carries no safety certification.