Texas Instruments SN74HC153DR

Overview

SN74HC153DR from Texas Instruments is a dual 4-line to 1-line data selector/multiplexer in SOIC-16 package, operating from 2 V to 6 V with typical propagation delay of 26 ns at 4.5 V and ±6-mA output drive capability. It implements full binary decoding for two independent channels sharing address inputs A/B, each with dedicated strobe (G) control, and is used in digital logic routing, parallel-to-serial conversion, and address/data path selection in microcontroller peripheral interfaces.

For engineers reviewing the SN74HC153DR datasheet, SN74HC153DR pinout, SN74HC153DR application, or SN74HC153DR equivalent, key selection criteria include its dual-channel multiplexing architecture, 16-pin SOIC thermal performance (R_θJA = 73°C/W), guaranteed 80-μA max ICC at 6 V, and compatibility with LSTTL load levels across industrial temperature range (–40°C to 85°C).

Technical Context

The SN74HC153DR uses CMOS technology with buffered inverters and AND-OR gate structures to implement two independent 4:1 multiplexers. Address inputs A and B are shared between both sections, while each section has its own active-low strobe (G) input that forces the corresponding Y output low when high.

Each channel selects one of four data inputs (C0–C3) based on the binary value of A/B, with output Y reflecting the selected input when G is low. The device supports cascading via the strobe line and permits parallel-to-serial conversion by sequentially enabling channels under external timing control.

Key Specifications

Pinout & Package

SN74HC153DR is housed in a 16-pin SOIC (D) package measuring 9.90 mm × 3.90 mm with 1.27-mm lead pitch and 2.00-mm max height. The package is RoHS-compliant, moisture-sensitive level 1, and designed for surface-mount reflow assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HCT153DR and CD74HC153M, the SN74HC153DR offers optimal noise immunity for pure CMOS systems, consistent 2–6 V operation without input threshold trade-offs, and highest production volume availability for industrial OEM programs.

Availability

SN74HC153DR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller peripheral multiplexing, and test equipment signal routing requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for SN74HC153DR 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 industrial, automotive, and communications markets.

The SN74HC153DR belongs to TI's 74HC logic family, engineered for high-speed, low-power CMOS operation in industrial control, instrumentation, and education platforms where reliability and wide voltage tolerance are critical.

FAQ

What is the maximum operating frequency supported by the SN74HC153DR?

The SN74HC153DR does not specify a maximum clock frequency in its datasheet, but its typical propagation delay of 26 ns at 4.5 V implies reliable operation up to approximately 38 MHz for clean, well-terminated signals. Actual usable frequency depends on input transition times, load capacitance, and PCB layout; TI recommends limiting input rise/fall times to ≤500 ns at 4.5 V to maintain timing integrity. The SN74HC153DR is intended for asynchronous data selection rather than synchronous clocked operation.

Can the SN74HC153DR operate at 3.3 V supply voltage?

Yes, the SN74HC153DR is fully specified to operate at 3.3 V, with guaranteed performance across its entire recommended range of 2 V to 6 V. At 3.3 V, it delivers ≥4.2 mA output drive, maintains <1 μA input leakage, and achieves typical t_pd of ~30 ns - making it ideal for mixed-voltage systems interfacing with 3.3 V microcontrollers while retaining compatibility with 5 V peripherals via level-shifting or open-drain configurations.

How are the strobe (G) inputs used in the SN74HC153DR?

The SN74HC153DR features two independent active-high strobe inputs: 1G (Pin 1) controls Channel 1 output Y1, and 2G (Pin 15) controls Channel 2 output Y2. When either G input is high, its respective Y output is forced low regardless of address or data inputs - enabling blanking, gating, or cascading. This allows time-multiplexed operation, priority encoding, or hierarchical selection without external logic. Both strobes must be low for normal data selection to occur.

Is the SN74HC153DR pin-compatible with older 74LS153 devices?

No, the SN74HC153DR is not pin-compatible with the bipolar 74LS153. While both share the same 16-pin SOIC footprint and logical function, the SN74HC153DR uses CMOS inputs with different voltage thresholds (VIH = 3.15 V min at 4.5 V vs. LS's 2 V), higher output impedance, and lower drive strength. Direct replacement requires verification of fanout, noise margin, and timing compatibility; TI recommends SN74HCT153DR for true LS-compatible drop-in use.

What thermal considerations apply to the SN74HC153DR in continuous operation?

The SN74HC153DR in SOIC-16 package has a junction-to-ambient thermal resistance (R_θJA) of 73°C/W. Under worst-case conditions (6 V supply, all outputs switching at 1 MHz into 50-pF loads), power dissipation remains below 20 mW, resulting in negligible temperature rise (<1.5°C above ambient). No heatsinking is required, but TI recommends a 0.1-μF ceramic bypass capacitor at V_CC (Pin 16) placed within 3 mm of the pin to suppress high-frequency supply noise and ensure stable operation.