Texas Instruments CD74HC153MT

Overview

CD74HC153MT from Texas Instruments is a dual 4-to-1-line selector/multiplexer IC with common select inputs (S0, S1), independent enable inputs (1E, 2E), and buffered CMOS outputs. It operates from 2V to 6V, supports -55°C to +125°C industrial/military temperature range, and delivers 25ns typical propagation delay (I→Y, VCC=4.5V, CL=50pF). It is used in digital logic routing, data path selection, and address decoding in embedded control systems.

For engineers reviewing the CD74HC153MT datasheet, CD74HC153MT pinout, CD74HC153MT application, or CD74HC153MT equivalent, key selection criteria include its dual-channel 4:1 multiplexing capability, SOIC-16 package, wide supply voltage range (2–6V), high noise immunity (NIL/NIH = 30% at VCC = 5V), and guaranteed operation across extended temperature extremes.

Technical Context

The CD74HC153MT implements two independent 4-input multiplexers sharing S0 and S1 select lines, with separate active-low enable inputs (1E, 2E) that force respective outputs (1Y, 2Y) low when asserted. Its HC logic family ensures CMOS-level input thresholds and rail-to-rail output swing.

Propagation delays are balanced between select-to-output (S→Y) and data-to-output (I→Y) paths, and transition times remain consistent across temperature and supply voltage-critical for synchronous bus arbitration and timing-critical signal routing in mixed-voltage systems.

Key Specifications

Pinout & Package

CD74HC153MT is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package with 1.27mm pitch, JEDEC MS-012 compliant, and RoHS-compliant NiPdAu lead finish. The package supports surface-mount reflow (MSL Level-1, peak 260°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CD74HC153MT, SN74HC153DR offers identical functionality with enhanced production support, while MC74HC153ADTR2G trades extended temperature range for automotive qualification - making CD74HC153MT the sole option for -55°C to +125°C operation in defense or downhole applications.

Availability

CD74HC153MT is available at Aetrix Electronics and suitable for industrial automation, aerospace avionics, and automotive powertrain control systems requiring stable component supply across extreme temperature ranges and long product lifecycles.

Supply support for CD74HC153MT 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 90 years of innovation in high-reliability components.

The CD74HC153MT belongs to TI's CD74HC high-speed CMOS logic family, designed for robust digital signal routing in mission-critical systems where wide temperature operation, low power, and noise immunity are essential.

FAQ

What is the maximum operating supply voltage for CD74HC153MT?

The CD74HC153MT supports a DC supply voltage range of 2V to 6V. Its absolute maximum rating is 7V, but sustained operation above 6V risks permanent damage. For reliable long-term use across the full -55°C to +125°C range, operation at 4.5V–5.5V is recommended to ensure margin against noise and process variation. The CD74HC153MT must never be operated outside the 2V–6V functional range specified in the datasheet.

Does CD74HC153MT support direct connection to LSTTL logic inputs?

No, CD74HC153MT does not guarantee direct compatibility with standard LSTTL inputs because its output high voltage (VOH) at 25°C and VCC = 4.5V is 4.4V minimum - sufficient for LSTTL VIH (2.0V min) - but its input thresholds (VIH = 3.15V min at VCC = 4.5V) exceed LSTTL VOH (2.4V typ). For reliable interfacing, use CD74HCT153MT instead, which features TTL-compatible inputs. The CD74HC153MT is intended for pure CMOS or mixed-voltage systems with appropriate level translation.

Can CD74HC153MT be used in place of CD74HCT153MT?

No, CD74HC153MT cannot be used as a drop-in replacement for CD74HCT153MT due to fundamental input threshold differences: CD74HC153MT requires VIH ≥ 3.15V at VCC = 4.5V, while CD74HCT153MT accepts VIH ≥ 2.0V. Driving CD74HC153MT with standard 5V TTL outputs (VOH ≈ 2.4V) may result in undefined logic states. The CD74HC153MT is only suitable where upstream logic meets CMOS input requirements.

What is the thermal resistance (θJA) of CD74HC153MT in its SOIC package?

The CD74HC153MT in SOIC-16 (package code D) has a typical junction-to-ambient thermal resistance (θJA) of 73°C/W, measured under standard JEDEC JESD51-7 conditions. This value assumes a 1-inch² copper pad with 2oz copper and no internal planes. Actual θJA in end equipment depends on PCB layout, airflow, and nearby heat sources. The CD74HC153MT's maximum junction temperature is 150°C, so power dissipation must be limited accordingly - e.g., at 73°C/W, 100mW dissipation yields ~7.3°C rise above ambient.

Is CD74HC153MT pin-compatible with CD74HC153M or CD74HC153M96?

Yes, CD74HC153MT is fully pin-compatible with CD74HC153M and CD74HC153M96 - all share the same SOIC-16 package, identical pinout, and identical electrical specifications. The suffix "T" denotes a small-quantity tape-and-reel (250 units), "M" indicates standard SOIC packaging (discontinued), and "M96" denotes large-volume tape-and-reel (2500 units). Functionally and mechanically, the CD74HC153MT is interchangeable with these variants in existing PCB layouts.