Texas Instruments CD74AC153M

Overview

CD74AC153M from Texas Instruments is a dual 4-line to 1-line data selector/multiplexer in SOIC-16 package, operating from 1.5 V to 5.5 V with ±24 mA output drive, balanced propagation delays, and SCR-latchup-resistant CMOS process. It supports industrial temperature range (−55°C to 125°C) and is used in digital logic routing, address decoding, and signal path selection in embedded control systems.

For engineers reviewing the CD74AC153M datasheet, CD74AC153M pinout, CD74AC153M application, or CD74AC153M equivalent, this page delivers verified functional identity, validated SOIC-16 package mapping, confirmed dual-mux architecture with independent strobes, real-world timing specs at 3.3 V and 5 V, and two technically documented alternative parts for design continuity.

Technical Context

The CD74AC153M implements two independent 4:1 multiplexers sharing common address inputs A and B but featuring separate active-low strobe inputs (1G and 2G), enabling asynchronous enable/disable of each channel. Each section decodes binary inputs to select one of four data inputs (C0–C3) onto its output (1Y or 2Y).

It uses AC-series CMOS technology with balanced noise immunity (30% of VCC), ESD protection exceeding 2 kV HBM, and operates across full military-grade temperature range. Propagation delays are tightly matched: tPLH/tPHL ≤ 28 ns at 3.3 V (CL = 50 pF), ≤ 20 ns at 5 V, supporting reliable high-speed digital interfacing without skew-induced glitches.

Key Specifications

Pinout & Package

CD74AC153M is packaged in 16-pin SOIC (D package), 9.9 mm × 6.0 mm body size, with standard JEDEC MO-001AC footprint and 1.27 mm pitch. Thermal resistance R_θJA = 119.9°C/W enables operation at full rating without forced airflow in typical PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 4:1 multiplexer applications.

Compared with SN74AC153N and CD74HC153E, CD74AC153M uniquely combines military-grade temperature support, ±24 mA drive, and ≤20 ns propagation delay - making it the only option among the three for high-reliability, high-speed industrial multiplexing where thermal and timing margins are tight.

Availability

CD74AC153M is available at Aetrix Electronics and suitable for industrial PLC I/O multiplexing, automotive sensor data routing, test equipment signal switching, and legacy system bus interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CD74AC153M 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 solutions, with over 50 years of innovation in high-reliability logic ICs.

The CD74AC153M belongs to TI's AC-series advanced CMOS logic family, designed specifically for high-speed, low-power, wide-supply digital interfacing in harsh-environment applications including aerospace, defense, and industrial automation.

FAQ

What is the maximum operating frequency supported by CD74AC153M?

The CD74AC153M does not specify a maximum clock frequency directly, but its worst-case propagation delay is 20 ns at 5 V (−55°C to 125°C). This supports reliable operation up to approximately 25 MHz in synchronous routing applications, assuming setup/hold margins and load capacitance (CL = 50 pF) per datasheet conditions. For higher frequencies, derating or layout optimization is required.

Does CD74AC153M support 1.8 V logic levels?

Yes, CD74AC153M supports 1.8 V operation: its recommended VCC range is 1.5 V to 5.5 V, and VIH/VIL thresholds scale with supply voltage. At VCC = 1.8 V, VIH(min) = 1.44 V and VIL(max) = 0.36 V per Section 4.3, ensuring compatibility with 1.8 V microcontrollers and FPGAs without level translation.

Can unused inputs on CD74AC153M be left floating?

No - all unused inputs on CD74AC153M must be tied to VCC or GND per TI application report SCBA004. Floating inputs cause undefined logic states, increased power consumption, and potential oscillation due to CMOS input structure. Unused address or strobe pins should be pulled to appropriate logic levels matching the desired default channel state.

Is CD74AC153M pin-compatible with CD74HC153E?

Yes, CD74AC153M and CD74HC153E share identical SOIC-16 pinout and logic function, but they differ in electrical characteristics: CD74AC153M offers ±24 mA drive and faster timing (20 ns vs 30 ns), while CD74HC153E draws less quiescent current. Direct substitution is possible only if timing and drive requirements are met.

What is the thermal pad configuration for CD74AC153M?

CD74AC153M uses the SOIC (D) package, which has no thermal pad. The thermal pad reference in the datasheet applies only to the WQFN (BQB) variant (e.g., CD74AC153BQBR). For CD74AC153M, standard SOIC thermal management - including copper pour under the package and proper VCC/GND plane connections - is sufficient per its R_θJA = 119.9°C/W rating.