Nexperia USA Inc. 74HC154DB,118

Overview

74HC154DB,118 from Nexperia is a 4-to-16 line decoder/demultiplexer in SO24 package, decoding binary address inputs A0–A3 into 16 active-LOW outputs (Y0–Y15), with dual active-LOW enable inputs (E0, E1) and CMOS-level compatibility. 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 - used in memory address decoding, I/O port expansion, and LED matrix control.

For engineers reviewing the 74HC154DB,118 datasheet, 74HC154DB,118 pinout, 74HC154DB,118 application, or 74HC154DB,118 equivalent, this device serves as a high-noise-immunity, low-power logic decoder for industrial control panels, programmable logic interface boards, and legacy bus-addressed peripheral selection circuits where precise 1-of-16 output activation is required.

Technical Context

The 74HC154DB,118 implements a combinational 4-bit binary decoder with two cascaded enable inputs that force all outputs HIGH when asserted. Its logic function follows strict truth-table behavior: only one output goes LOW per unique A0–A3 combination when both E0 and E1 are LOW. The device uses standard CMOS transistor topology with input clamp diodes enabling overvoltage-tolerant interfacing via current-limiting resistors.

It features symmetric propagation delays (tpd = 13 ns typ. @ 4.5 V, CL = 50 pF) from address or enable inputs to any Yn output, and transition times (tt = 7 ns typ.) ensuring clean edge integrity. Power dissipation capacitance is fixed at 60 pF per gate, supporting accurate dynamic power estimation across supply voltages and switching frequencies.

Key Specifications

Pinout & Package

74HC154DB,118 is supplied in SO24 (SOT137-1) plastic small outline package: 24-pin, 7.5 mm body width, gull-wing leads, JEDEC MS-013 compliant. Pin 1 index located at top-left corner with notch or dot marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC154DB,118, the 74HCT154DB,118 offers superior TTL input compatibility at the cost of marginally higher static current, while SN74HC154DR provides second-source availability but lacks Nexperia's extended temperature validation and JEDEC-compliant latch-up certification.

Availability

74HC154DB,118 is available at Aetrix Electronics and suitable for memory address decoding, I/O port expansion, and LED matrix control requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for 74HC154DB,118 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 focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74HC154DB,118 belongs to Nexperia's HC-series high-speed CMOS logic family, engineered for low-power, noise-immune digital interfacing in space-constrained and thermally demanding applications.

FAQ

Can 74HC154DB,118 operate at 3.3 V supply?

Yes. The device is fully specified from 2.0 V to 6.0 V, including 3.3 V operation. At VCC = 3.3 V, VIH is guaranteed ≥2.31 V and VOL ≤0.26 V with 4 mA sink, meeting standard 3.3 V LVTTL and LVCMOS interface requirements without level translation.

What is the maximum output sink current per Yn pin?

Each Yn output can sink up to 4.0 mA at VCC = 4.5 V while maintaining VOL ≤ 0.26 V, and up to 5.2 mA at VCC = 6.0 V with VOL ≤ 0.26 V. Total device output current must remain within package thermal limits (Ptot ≤ 500 mW).

How does the enable logic work when using the device as a demultiplexer?

When one enable (e.g., E0) is held LOW and the other (E1) is used as data input, the selected Yn output mirrors E1's logic state. All unselected outputs remain HIGH. This provides true 1-to-16 demux functionality with no additional components or timing overhead.

Is the SO24 package RoHS-compliant and lead-free?

Yes. The 74HC154DB,118 in SOT137-1 (SO24) package is manufactured per RoHS Directive 2011/65/EU and EU REACH Regulation, with lead-free terminations and halogen-free molding compound, verified per Nexperia's material declarations.