Texas Instruments CD74HCT151M96G4

Overview

CD74HCT151M96G4 from Texas Instruments is an 8-input digital multiplexer with complementary non-inverting (Y) and inverting (W) outputs, three binary select inputs (A, B, C), and active-low enable (G). It operates at 4.5 V to 5.5 V, delivers propagation delays as low as 12 ns (enable-to-Y, 25°C, CL = 15 pF), supports –55°C to +125°C industrial/military temperature range, and is used in data routing, address decoding, and logic function generation within embedded control systems.

For engineers reviewing the CD74HCT151M96G4 datasheet, CD74HCT151M96G4 pinout, CD74HCT151M96G4 application, or CD74HCT151M96G4 equivalent, key selection criteria include TTL-compatible input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V), dual-output polarity support, SOIC-16 package compatibility, and guaranteed operation across extended temperature extremes without derating.

Technical Context

The CD74HCT151M96G4 implements a single 8:1 multiplexer using CMOS technology with TTL-level input compatibility. Its functional mode is fully defined by the truth table in section 7.3: G must be low for channel selection; A/B/C determine which of D0–D7 routes to Y (non-inverted) and W (inverted); all unused inputs must be tied to valid logic levels to prevent floating states.

It features buffered inputs and outputs, balanced propagation delay (tpd ≤ 57 ns max over full temp range), and low dynamic power consumption (CPD = 58 pF). Input leakage current is ≤ ±1 μA at VCC = 5.5 V, and output drive capability meets 4 mA sink/source under standard load conditions.

Key Specifications

Pinout & Package

CD74HCT151M96G4 is housed in a 16-pin SOIC (D) package measuring 9.90 mm × 3.90 mm, with gull-wing leads, RoHS-compliant NiPdAu lead finish, and moisture sensitivity level (MSL) 1 (unlimited floor life at ≤30°C/60% RH).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-input multiplexer applications.

Compared with SN74HCT151DR and MC74HCT151ADR2G, CD74HCT151M96G4 offers proven field reliability across decades of deployment, full military-grade temperature validation, and seamless drop-in replacement in existing SOIC-16 layouts-making it optimal for sustaining legacy systems and safety-critical upgrades.

Availability

CD74HCT151M96G4 is available at Aetrix Electronics and suitable for industrial PLC I/O consolidation, automotive ECU address decoding, and military data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CD74HCT151M96G4 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-grade qualification.

CD74HCT151M96G4 belongs to TI's legacy High-Speed CMOS Logic (HCT) product line, designed specifically for 5 V systems requiring TTL-compatible inputs, robust noise immunity, and operation across extreme ambient temperatures.

FAQ

What is the maximum operating frequency supported by CD74HCT151M96G4?

The CD74HCT151M96G4 does not specify a maximum clock or switching frequency in its datasheet. Instead, timing is characterized by propagation delay (e.g., 12 ns typical enable-to-Y delay at 5 V, 25°C, CL = 15 pF) and transition time (15 ns typical). System-level maximum frequency depends on total path delay-including upstream driver rise time, trace capacitance, and downstream load-and must be validated per application. The CD74HCT151M96G4 remains functional up to its specified 5.5 V supply and –55°C to +125°C range.

Does CD74HCT151M96G4 require external pull-up or pull-down resistors on its inputs?

No, CD74HCT151M96G4 does not require external pull-up or pull-down resistors on its inputs-but unused inputs must never be left floating. Per TI's layout guidelines, all unconnected select (A/B/C), data (D0–D7), or enable (G) pins must be tied to a valid logic level (VCC or GND) to prevent undefined states and excessive current draw. The device itself has no internal termination; external biasing is only needed for unused pins, not for functional operation.

Can CD74HCT151M96G4 operate with a 3.3 V supply?

No, CD74HCT151M96G4 is strictly specified for 4.5 V to 5.5 V operation and is not guaranteed to function correctly at 3.3 V. Its TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and output drive characteristics are optimized for 5 V systems. For 3.3 V applications, consider the pin-compatible CD74HC151M96G4 (2 V to 6 V HC family) or SN74LVC151A, both of which support 3.3 V logic levels while retaining identical functionality and SOIC-16 packaging.

What is the meaning of "G4" in CD74HCT151M96G4?

The "G4" suffix in CD74HCT151M96G4 denotes Texas Instruments' green packaging standard: lead-free (Pb-free), RoHS-compliant construction with NiPdAu lead finish and halogen-free mold compound. It replaces older "E4" or blank-suffix variants and indicates conformance to JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), enabling unlimited floor life storage under standard conditions. The CD74HCT151M96G4 retains identical electrical and thermal specifications as earlier versions.

Is CD74HCT151M96G4 pin-compatible with CD74HC151M96G4?

Yes, CD74HCT151M96G4 is pin-compatible with CD74HC151M96G4-they share identical SOIC-16 (D) package dimensions, pin numbering, and terminal functions (G, D0–D7, Y, W, A, B, C, VCC, GND). However, they differ electrically: CD74HCT151M96G4 uses TTL-compatible inputs (4.5–5.5 V only), while CD74HC151M96G4 supports wider 2–6 V operation with CMOS input thresholds. Interchangeability requires matching supply voltage and input logic family constraints.