Nexperia USA Inc. 74HC4514PW,112

Overview

74HC4514PW,112 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 across 2.0 V to 6.0 V supply, supports −40 °C to +125 °C, and delivers propagation delay as low as 22 ns at VCC = 6.0 V.

For engineers reviewing the 74HC4514PW,112 datasheet, 74HC4514PW,112 pinout, 74HC4514PW,112 application, or 74HC4514PW,112 equivalent, key selection considerations include latch-controlled output stability, TTL-compatible variants (74HCT4514), TSSOP24 package constraints, and timing-critical demultiplexing in industrial control and memory addressing circuits.

Technical Context

This device integrates four independent D-type latches followed by a 4-to-16 binary decoder. When LE is HIGH, outputs track 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/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 inputs (VIH ≥ 3.15 V at VCC = 4.5 V); the 74HCT variant supports TTL-level inputs (VIH ≥ 2.0 V at VCC = 4.5–5.5 V), 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.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT4514PW,112, the 74HC4514PW,112 provides superior noise immunity and lower static power but requires CMOS-level inputs; versus SN74LS4514N, it enables latch-controlled timing determinism and cuts supply current by >90% at 5 V.

Availability

74HC4514PW,112 is available at Aetrix Electronics and suitable for industrial control systems, test equipment signal routing, and memory address decoding requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC4514PW,112 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 high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74HC4514 belongs to Nexperia's HC logic family, engineered for low-power, high-noise-immunity digital interfacing in space-constrained industrial and automotive control units.

FAQ

What is the minimum pulse width required on the LE input to reliably capture address data?

The minimum LE HIGH pulse width is 14 ns at VCC = 6.0 V, per datasheet Table 7. This ensures setup and hold timing margins are met for A0–A3 sampling. At lower VCC (e.g., 2.0 V), the requirement increases to 80 ns. Designers must verify microcontroller or FPGA GPIO timing meets these values under worst-case voltage and temperature conditions.

Can the 74HC4514PW,112 be used with a 3.3 V supply while interfacing to 5 V logic?

Yes - its input clamp diodes allow safe 5 V signal injection when series current-limiting resistors (e.g., 10 kΩ) are used on A0–A3 and LE/E inputs. Output VOH at 3.3 V is ≥2.97 V (min), compatible with 74LVC and other 3.3 V CMOS inputs. However, 5 V-tolerant outputs require external pull-ups or level translators for driving pure 5 V loads.

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

LE controls data capture into internal latches; E controls output driver activation. When LE is LOW, latched address data is held regardless of A0–A3 changes. E then determines whether that latched address appears on Q0–Q15: E = LOW activates the selected output; E = HIGH forces all Qn LOW. The two controls operate orthogonally - E has no effect on latch state or integrity.

Is thermal derating required for continuous operation at +125 °C ambient?

Yes - total power dissipation derates linearly at 12.4 mW/K above +110 °C (per Table 4). At +125 °C, Ptot must be limited to 500 mW − (15 K × 12.4 mW/K) = 314 mW. This corresponds to ≤12 outputs switching at 1 MHz with CL = 50 pF. For full 16-output operation at max frequency, ambient must be kept ≤+105 °C or forced-air cooling applied.