Nexperia USA Inc. 74HCT4514PW,118

Overview

74HCT4514PW,118 from Nexperia is a 4-to-16 line decoder/demultiplexer with input latches, designed for address decoding and digital multiplexing in industrial control and embedded logic systems. It features TTL-compatible inputs (VIH = 2.0 V min), 16 active-HIGH outputs (Q0–Q15), latch enable (LE) and enable (E) control, and operates across −40 °C to +125 °C at 4.5–5.5 V supply.

For engineers reviewing the 74HCT4514PW,118 datasheet, 74HCT4514PW,118 pinout, 74HCT4514PW,118 application, or 74HCT4514PW,118 equivalent, key selection criteria include latch-controlled output stability, TTL-level input compatibility, propagation delay (t_pd ≤ 83 ns @ V_CC = 4.5 V), TSSOP24 package thermal performance, and ESD robustness (HBM > 2000 V).

Technical Context

This device implements a synchronous 4-bit binary decoder with integrated transparent latches on address inputs A0–A3. Latch enable (LE) controls data capture timing: when LE transitions LOW, the current A0–A3 values are stored, decoupling output state from subsequent address changes.

The enable input E operates independently of the latch and acts as an active-LOW output gate - only when E is LOW does the decoded output (determined by latched address) go HIGH; all outputs remain LOW when E is HIGH. Inputs include clamp diodes supporting interface to over-V_CC signals via current-limiting resistors.

Key Specifications

Pinout & Package

TSSOP24 (SOT355-1) package: plastic thin shrink small outline, 24 leads, 4.4 mm body width, 0.65 mm pitch, 1.1 mm max height - optimized for high-density PCB routing and automated SMT placement.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC4514PW,118 and SN74LS4514N, the 74HCT4514PW,118 uniquely balances TTL input compatibility, integrated latching, and low-power CMOS efficiency - making it optimal for modern 5 V embedded systems needing glitch-free address decoding without added components.

Availability

74HCT4514PW,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller peripheral address decoding, hexadecimal-to-BCD conversion, and LED segment driver selection requiring stable component supply across extended temperature ranges.

Supply support for 74HCT4514PW,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 leading semiconductor manufacturer specializing in high-performance, energy-efficient logic, analog, and discrete components for industrial, automotive, and consumer applications.

The 74HCT4514 belongs to Nexperia's high-speed TTL-compatible logic family, engineered specifically for robust address decoding and demultiplexing in noise-prone industrial control and embedded systems operating across wide temperature and voltage ranges.

FAQ

What is the function of the LE (latch enable) pin?

The LE pin is an active-HIGH control that determines whether address inputs A0–A3 are transparently passed to the decoder or held in internal latches. When LE is HIGH, outputs follow A0–A3 in real time; when LE falls LOW, the current A0–A3 values are captured and retained, stabilizing outputs regardless of subsequent address changes - essential for reliable decoding in asynchronous bus environments.

Can the 74HCT4514PW,118 drive LEDs directly?

Yes - each Q_n output can source up to −4 mA (VOH ≥ 3.7 V @ IOH = −4 mA, VCC = 4.5 V) and sink up to 4 mA (VOL ≤ 0.4 V @ IOL = 4 mA). This allows direct connection to low-current LEDs (e.g., 2 mA @ 1.8 V forward voltage) with appropriate series resistors, though dedicated LED drivers are recommended for high-brightness or high-reliability applications.

How does the E (enable) input interact with the latch?

The E input operates independently of the latch: it gates the final output stage but does not affect latch storage. When E is LOW, the output corresponding to the latched A0–A3 value goes HIGH; when E is HIGH, all Q0–Q15 outputs are forced LOW regardless of latch content. This allows dynamic blanking or power gating without disturbing the stored address state.

Is this device suitable for automotive applications?

No - the 74HCT4514PW,118 is not automotive-qualified. While it operates from −40 °C to +125 °C, it lacks AEC-Q100 qualification, automotive-grade screening, and guaranteed PPAP documentation. For automotive use, consult Nexperia's automotive-qualified equivalents such as the 74HCT4514-Q100 variant, which undergoes additional stress testing and lot traceability.