Nexperia USA Inc. 74HC154D,652

Overview

74HC154D,652 from Nexperia is a 4-to-16 line decoder/demultiplexer in SO24 package, decoding four binary address inputs (A0–A3) into sixteen active-LOW mutually exclusive outputs (Y0–Y15), with dual active-LOW enable inputs (E0, E1). It operates from 2.0 V to 6.0 V, supports -40 °C to +125 °C ambient range, and delivers 13 ns typical propagation delay at 4.5 V, enabling precise address selection in memory and I/O expansion systems.

For engineers reviewing the 74HC154D,652 datasheet, 74HC154D,652 pinout, 74HC154D,652 application, or 74HC154D,652 equivalent, this device serves as a core logic building block for address decoding, peripheral selection, and 1-to-16 signal routing-requiring attention to enable polarity, output drive strength (±4 mA), and CMOS-level input compatibility.

Technical Context

The 74HC154D,652 implements a combinational logic decoder with two independent active-LOW enables: both must be LOW for valid output decoding; either HIGH forces all Y outputs HIGH. Its internal architecture uses standard CMOS NAND/NOR gates to generate inverted decoded outputs, eliminating need for external inverters in active-LOW bus architectures.

It features input clamp diodes allowing interface to voltages exceeding VCC when used with current-limiting resistors, and meets JEDEC JESD7A (2.0–6.0 V) and JESD8C (2.7–3.6 V) standards. Latch-up immunity exceeds 100 mA per JESD78 Class II Level B, supporting robust operation in mixed-voltage industrial control environments.

Key Specifications

Pinout & Package

74HC154D,652 is housed in a plastic small outline package (SO24, SOT137-1) with 24 leads and 7.5 mm body width, optimized for automated PCB assembly and thermal performance up to 500 mW total dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-to-16 decoder/demultiplexer applications.

Compared with 74HC154D,652, the 74HCT154D,653 offers TTL input compatibility at identical speed and package, while SN74LS154N trades power efficiency and voltage flexibility for legacy 5 V TTL interoperability-making the HC variant optimal for modern mixed-voltage embedded designs.

Availability

74HC154D,652 is available at Aetrix Electronics and suitable for memory address decoding, I/O port expansion, LED matrix row selection, and programmable logic interface applications requiring stable component supply across automotive, industrial, and test equipment programs.

Supply support for 74HC154D,652 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

Nexperia is a global semiconductor expert specializing in high-performance, energy-efficient logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74HC logic family targets general-purpose digital interfacing and signal routing, emphasizing low power, wide voltage operation, and robust ESD/latch-up performance for demanding embedded environments.

FAQ

What is the logic polarity of the 74HC154D,652 outputs?

The 74HC154D,652 provides active-LOW decoded outputs (Y0–Y15): the selected output goes LOW while all others remain HIGH. This matches standard memory chip-select and peripheral-enable conventions, eliminating need for external inverters in most bus architectures.

Can the 74HC154D,652 be used as a demultiplexer?

Yes-by connecting a data signal to one enable input (e.g., E0) and grounding the other (E1), the selected Y output follows the data state while all unselected outputs remain HIGH. This 1-to-16 demux mode requires no additional components and maintains full timing specifications.

Does the 74HC154D,652 require external pull-up resistors on its outputs?

Yes-since outputs are active-LOW open-drain equivalents (sinking only), pull-up resistors are mandatory to establish HIGH-state voltage levels. Typical values range from 1 kΩ (for fast rise times with heavy loads) to 10 kΩ (for low-power standby operation).

How does the 74HC154D,652 handle input voltages above VCC?

Its inputs include clamp diodes to VCC and GND. When interfacing to voltages > VCC, a series current-limiting resistor must be used to restrict IIK to ≤ ±20 mA, enabling safe operation with 12 V control signals in industrial I/O modules.