Nexperia USA Inc. 74HC4514D,652

Overview

74HC4514D,652 from Nexperia is a 4-to-16 line decoder/demultiplexer with input latches, featuring four binary address inputs (A0–A3), latch enable (LE), active-low enable (E), and 16 active-high outputs (Q0–Q15). It operates from 2.0 V to 6.0 V, supports −40 °C to +125 °C ambient range, and delivers propagation delay as low as 22 ns at VCC = 6.0 V - used in hexadecimal decoding and address selection for memory-mapped peripherals.

For engineers reviewing the 74HC4514D,652 datasheet, 74HC4514D,652 pinout, 74HC4514D,652 application, or 74HC4514D,652 equivalent, key selection criteria include latch-controlled output stability, TTL-compatible variants (74HCT4514), TSSOP24 package thermal performance, and precise timing margins for synchronous bus decoding.

Technical Context

This device integrates four independent D-type latches followed by a 4-to-16 binary decoder. Latch enable (LE) controls data capture: when HIGH, outputs follow A0–A3; when LOW, latched values hold outputs stable regardless of address changes. The enable input E is asynchronous and active-low - it gates decoded output drive but does not affect latch state.

Input clamping diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors. The 74HC variant uses CMOS-level thresholds; the 74HCT variant shifts input thresholds to match TTL logic, enabling mixed-logic system integration without level shifters.

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 layouts with improved thermal dissipation vs. SOIC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC4514D,652, the 74HCT4514D,653 offers seamless TTL interoperability without design changes, while the SN74LS4514N sacrifices latch control and power efficiency for direct drop-in replacement in obsolete TTL systems - neither provides the same combination of latching, wide VCC, and low ICC.

Availability

74HC4514D,652 is available at Aetrix Electronics and suitable for industrial control systems, memory-mapped peripheral interfaces, and hexadecimal display subsystems requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for 74HC4514D,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 leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with global R&D and manufacturing infrastructure focused on reliability and energy efficiency.

The 74HC/HCT4514 belongs to Nexperia's standard logic family designed for robust, pin-compatible replacements in industrial, automotive (non-safety), and computing applications - emphasizing latch stability, wide voltage operation, and ESD resilience.

FAQ

What is the function of the latch enable (LE) pin on the 74HC4514D,652?

The LE pin controls data capture into internal latches: when LE is HIGH, outputs follow A0–A3 in real time; when LE transitions LOW, the current A0–A3 values are stored, and outputs remain fixed regardless of subsequent address changes. This enables glitch-free output selection synchronized to system timing.

Can the 74HC4514D,652 be used with a 3.3 V supply?

Yes - the 74HC4514D,652 is fully specified from 2.0 V to 6.0 V, including 3.3 V operation. At VCC = 3.3 V, VIH is guaranteed ≥ 2.1 V and VIL ≤ 1.35 V, providing adequate noise margin for standard 3.3 V CMOS logic families.

How does the enable (E) input differ from latch enable (LE)?

E is an asynchronous, active-low output gate: when HIGH, all Q0–Q15 are forced LOW regardless of latch content; when LOW, the latched address determines which single output goes HIGH. LE affects only latch state; E affects only output drive - they operate independently.

Is the 74HC4514D,652 pin-compatible with other 24-pin TSSOP logic devices?

Yes - it uses the standard SOT355-1 (TSSOP24) footprint with 0.65 mm pitch and 4.4 mm body width, matching JEDEC MO-153 and industry-standard 24-lead TSSOP layouts. PCB land patterns for compatible devices like 74HC595 or 74LVC16373 can be reused with verification of pin function mapping.