Nexperia USA Inc. 74HC4514DB,118

Overview

74HC4514DB,118 from Nexperia is a 4-to-16 line decoder/demultiplexer with input latches, operating across 2.0 V to 6.0 V supply, featuring 16 active-HIGH outputs (Q0–Q15), latch enable (LE) and enable (E) inputs, and TSSOP24 package. It decodes binary address inputs A0–A3 into mutually exclusive outputs for address decoding in microcontroller peripheral selection and hexadecimal-to-BCD conversion circuits.

For engineers reviewing the 74HC4514DB,118 datasheet, 74HC4514DB,118 pinout, 74HC4514DB,118 application, or 74HC4514DB,118 equivalent, this device supports stable latched output selection under asynchronous address changes, enables TTL-compatible interfacing via 74HCT variant pairing, and delivers sub-50 ns propagation delay at 4.5 V for real-time demux control in industrial I/O expanders and LED matrix drivers.

Technical Context

This IC integrates four independent address-input latches followed by a 4-bit binary decoder stage, allowing transparent data capture on LE HIGH and hold-and-decode operation on LE LOW. The latch-enable path and decode path are electrically isolated-E controls final output enable independently of latch state.

Input clamping diodes permit safe interfacing to voltages exceeding VCC when used with current-limiting resistors. The 74HC4514DB,118 variant uses CMOS-level input thresholds (VIH = 3.15 V min at VCC = 4.5 V), ensuring compatibility with 3.3 V and 5 V logic families while maintaining high noise immunity (>400 mV noise margin at 4.5 V).

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/demux applications.

Compared with 74HC4514DB,118, the 74HC4515DB,118 offers complementary output polarity without changing board layout, while SN74LV4094PWR trades deterministic parallel addressing for serial configurability and higher pin-efficiency at the cost of latency and control overhead.

Availability

74HC4514DB,118 is available at Aetrix Electronics and suitable for industrial I/O expansion, LED matrix drivers, microcontroller peripheral decoding, and hexadecimal-to-BCD conversion requiring stable component supply across extended temperature ranges.

Supply support for 74HC4514DB,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 logic, analog, and discrete components, with global R&D and manufacturing facilities focused on reliability and energy efficiency.

The 74HC4514DB,118 belongs to Nexperia's HC-series high-speed CMOS logic family, designed for low-power, noise-immune address decoding and signal routing in industrial automation, test equipment, and embedded control systems.

FAQ

Can 74HC4514DB,118 operate reliably at 3.3 V supply?

Yes. The 74HC4514DB,118 is fully specified from 2.0 V to 6.0 V. At VCC = 3.3 V, VIH = 2.31 V min and VIL = 1.09 V max ensure clean logic discrimination, and propagation delay remains ≤38 ns (typ) with 50 pF load-suitable for 3.3 V FPGA or ARM Cortex-M peripheral buses.

What is the maximum clock frequency for address updates via LE?

The minimum LE pulse width is 16 ns at VCC = 4.5 V, supporting ≤30 MHz latch strobe rates. However, due to An→Qn propagation delay (27 ns typ), sustained address change rates above 12 MHz may cause output glitches unless synchronized with E gating-designs should use LE edge-aligned to address stable windows.

Does this device support hot insertion or live bus connection?

No. While input clamp diodes allow overvoltage tolerance with current limiting, the 74HC4514DB,118 lacks hot-swap protection circuitry. Applying VCC before GND or connecting to a live bus risks latch-up or ESD damage. Always power-rail sequence GND → VCC → inputs, and use series resistors on all pins interfacing to uncontrolled sources.

How does the 74HC4514DB,118 differ from the 74HCT4514 variant?

The 74HC4514DB,118 uses CMOS input thresholds (VIH ≈ 70% VCC), while 74HCT4514 uses TTL-compatible thresholds (VIH = 2.0 V min at VCC = 4.5 V). This makes the HCT version interoperable with legacy 5 V TTL outputs without level shifters, whereas the HC version requires compatible CMOS drivers or voltage translation for mixed-logic systems.