Texas Instruments SN74HC153DE4

Overview

SN74HC153DE4 from Texas Instruments is a dual 4-line to 1-line data selector/multiplexer in SOIC-16 package, operating across 2 V–6 V supply, with typical propagation delay of 17 ns at 6 V and ±6-mA output drive at 5 V. It implements full binary decoding for channel selection, features independent strobe (G) inputs per section, and is used in digital logic routing, parallel-to-serial conversion, and address/data multiplexing in microcontroller peripheral interfaces.

For engineers reviewing the SN74HC153DE4 datasheet, SN74HC153DE4 pinout, SN74HC153DE4 application, or SN74HC153DE4 equivalent, key selection criteria include its dual-channel 4:1 mux architecture, common A/B select lines, independent enable control per output, and compatibility with LSTTL loads while maintaining CMOS power efficiency.

Technical Context

The SN74HC153DE4 integrates two independent 4-input multiplexers sharing address inputs A and B, each with dedicated active-low strobe (G1, G2) enabling asynchronous output disable. Its internal structure uses inverters, drivers, and AND-OR logic to perform binary-decoded selection without external decoding logic.

Each channel selects one of four data inputs (C0–C3) based on A/B state, driving the corresponding Y output low when strobe is high; outputs are open-drain compatible only in functional behavior-not electrical-since outputs are push-pull with defined VOH/VOL specs at ±6 mA.

Key Specifications

Pinout & Package

SN74HC153DE4 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 maximum height. Pin numbering follows JEDEC MS-012 standard for SOIC-16.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC153DE4, SN74HCT153N offers superior TTL interface compatibility at the cost of higher quiescent current, while CD74HC153M96 provides identical electrical performance with enhanced process controls for automated SMT lines - making SN74HC153DE4 optimal for cost-sensitive industrial designs where legacy PDIP footprint compatibility is retained.

Availability

SN74HC153DE4 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller peripheral multiplexing, and legacy bus interface translation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74HC153DE4 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 founded in 1930, specializing in analog, embedded processing, and logic solutions with broad industrial, automotive, and consumer reach.

The SN74HC153DE4 belongs to TI's 74HC logic family, designed for low-power, high-noise-immunity digital signal routing in resource-constrained embedded systems where pin efficiency and voltage flexibility are critical.

FAQ

What is the maximum clock frequency supported by SN74HC153DE4?

The SN74HC153DE4 does not operate on a clock; it is a combinational logic device whose speed is defined by propagation delay. With tpd = 17 ns max at 6 V, it supports reliable data selection up to approximately 25 MHz in worst-case timing paths when driving 50-pF loads - actual usable frequency depends on system-level setup/hold margins and fanout.

Can SN74HC153DE4 be used with 3.3-V microcontrollers?

Yes, SN74HC153DE4 operates down to 2 V and is fully compatible with 3.3-V systems. Its VIH = 2.31 V min at VCC = 3.3 V meets standard CMOS thresholds, and VOH ≥ 3.1 V at 3.3 V ensures solid high-level signaling to 3.3-V receivers - no level shifting required.

Does SN74HC153DE4 support cascading for larger multiplexing?

Yes, SN74HC153DE4 supports cascading via its strobe (G) inputs: the Y outputs can feed data inputs of another SN74HC153DE4 stage, while A/B lines remain shared. This enables 8:1 or 16:1 configurations using multiple devices with minimal control logic overhead.

What is the recommended bypass capacitor for SN74HC153DE4?

Texas Instruments specifies a 0.1-μF ceramic capacitor placed as close as possible to the VCC pin (Pin 16) and GND (Pin 8) of SN74HC153DE4. For noisy environments, paralleling with a 1-μF capacitor improves low-frequency decoupling - layout must minimize loop inductance for effective suppression.

Are unused inputs on SN74HC153DE4 required to be terminated?

Yes, all unused inputs on SN74HC153DE4 - including A, B, G1, G2, and any unconnected Cx lines - must be tied to VCC or GND. Floating CMOS inputs cause increased ICC, erratic outputs, and potential latch-up; TI mandates termination per SCBA004 guidelines to ensure stable operation.