Nexperia USA Inc. 74HC4514PW,118

Overview

74HC4514PW,118 from Nexperia is a 4-to-16 line decoder/demultiplexer with input latches, used for address decoding and hexadecimal-to-BCD conversion in digital logic systems. It features four binary-weighted address inputs (A0–A3), latch enable (LE), active-low enable (E), and 16 active-high outputs (Q0–Q15). Operates from 2.0 V to 6.0 V supply, supports −40 °C to +125 °C ambient range, and delivers propagation delay as low as 22 ns at VCC = 6.0 V.

For engineers reviewing the 74HC4514PW,118 datasheet, 74HC4514PW,118 pinout, 74HC4514PW,118 application, or 74HC4514PW,118 equivalent, key selection criteria include latch-controlled output stability, TTL-compatible variants (74HCT4514), TSSOP24 package constraints, and timing behavior under varying load capacitance (CL = 50 pF) and supply voltage.

Technical Context

This device integrates four independent D-type latches followed by a 4-to-16 binary decoder. When LE is HIGH, outputs follow A0–A3 in real time; when LE transitions LOW, the current address is latched and held regardless of subsequent address changes. The E input enables or disables all outputs independently of latch state - only affecting output drive, not latch integrity.

Input clamping diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors. The 74HC variant uses CMOS-level thresholds (VIH ≥ 3.15 V at VCC = 4.5 V); the 74HCT variant shifts input thresholds to TTL-compatible levels (VIH ≥ 2.0 V at VCC = 4.5 V), enabling direct connection to legacy TTL logic 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. Pin 1 index marked; moisture sensitivity level (MSL) 1 per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT4514PW,118, the original 74HC4514PW,118 provides superior noise immunity in mixed-signal environments; compared with SN74HC154PWR, it trades off 5–7 ns added delay for critical latch-based timing isolation in asynchronous bus systems.

Availability

74HC4514PW,118 is available at Aetrix Electronics and suitable for memory address decoding, hexadecimal-to-BCD conversion, and digital multiplexing requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for 74HC4514PW,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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial, automotive, and consumer applications.

The 74HC4514 belongs to Nexperia's high-speed CMOS logic family, designed specifically for robust address decoding and signal routing in resource-constrained embedded systems where latch-stabilized output control is essential.

FAQ

What is the maximum clock frequency supported by the 74HC4514PW,118?

The 74HC4514PW,118 does not operate on a clock signal - it is combinational logic with latched inputs. Its effective switching rate is governed by propagation delay (22 ns max at VCC = 6.0 V) and setup/hold timing (tsu = 20 ns, th = 1 ns at VCC = 6.0 V), supporting reliable operation up to approximately 20 MHz address update rates under typical load conditions.

Can the 74HC4514PW,118 drive LEDs directly?

Yes - each output can source or sink up to ±4.0 mA at VCC = 4.5 V, sufficient to drive low-current indicator LEDs (e.g., 2 mA @ 1.8 V forward voltage) with appropriate series resistors. For higher-current LEDs or multiplexed displays, external buffer transistors are recommended to maintain output voltage margins and avoid exceeding ICC limits.

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

LE controls data capture into internal latches: when LE is HIGH, outputs reflect real-time A0–A3; when LE goes LOW, the last address is stored and held. E operates independently - it gates output drive only. Even with LE latched, outputs remain LOW if E is HIGH; asserting E LOW activates the latched output. Latch state is unaffected by E transitions.

Is the 74HC4514PW,118 RoHS compliant and halogen-free?

Yes - the 74HC4514PW,118 in TSSOP24 (SOT355-1) packaging meets RoHS Directive 2011/65/EU and is certified halogen-free per IEC 61249-2-21, with chlorine ≤ 900 ppm and bromine ≤ 900 ppm. Full compliance documentation is available through Nexperia's product change notifications and material declarations portal.