NXP Semiconductors 74HC4514N,652

Overview

74HC4514N,652 from Nexperia is a 4-to-16 line decoder/demultiplexer with input latches, used for address decoding and digital multiplexing in 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). Operating from 2.0 V to 6.0 V, it delivers 46 ns propagation delay at 4.5 V and supports industrial temperature range (−40 °C to +125 °C).

For engineers reviewing the 74HC4514N,652 datasheet, 74HC4514N,652 pinout, 74HC4514N,652 application, or 74HC4514N,652 equivalent, this device is selected for stable 16-output decoding where input data must be latched before output selection - critical in memory address mapping, hexadecimal-to-BCD conversion, and bus-controlled peripheral selection.

Technical Context

The 74HC4514N,652 implements a two-stage architecture: four address inputs feed into transparent latches controlled by LE, followed by a 4-to-16 binary decoder. When LE is HIGH, outputs reflect real-time A0–A3; when LE transitions LOW, the last input state is captured and held. The E input independently gates all 16 outputs - LOW enables one selected output (determined by latched address), HIGH forces all outputs LOW.

Input clamping diodes allow safe interfacing to voltages exceeding VCC using current-limiting resistors. Its CMOS design ensures low static power consumption (<160 μA ICC max at 6.0 V), high noise immunity, and compatibility with both CMOS-level inputs and TTL-level variants (74HCT4514) - though 74HC4514N,652 specifically uses CMOS input thresholds.

Key Specifications

Pinout & Package

74HC4514N,652 is supplied in a 24-pin plastic DIP package (standard through-hole mounting). Pin numbering follows dual-in-line convention with notch orientation defining Pin 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC4514N,652, the 74HCT4514N,652 provides TTL input compatibility at identical pinout and function, while SN74LS4514N trades power efficiency and latching for direct LS-TTL integration - making 74HC4514N,652 optimal for modern mixed-voltage, low-power, and latch-dependent applications.

Availability

74HC4514N,652 is available at Aetrix Electronics and suitable for memory address decoding, hexadecimal-to-BCD conversion, and peripheral multiplexing requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for 74HC4514N,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 global semiconductor expert focused on essential efficiency-enhancing components, delivering high-performance logic, discrete, and MOSFET solutions with rigorous quality and reliability standards.

The 74HC4514N,652 belongs to Nexperia's 74HC high-speed CMOS logic family, engineered for low-power, wide-supply-voltage digital interfacing and decoding in industrial, computing, and communications equipment.

FAQ

What is the function of the LE pin on the 74HC4514N,652?

The LE (Latch Enable) pin on the 74HC4514N,652 controls whether the address inputs A0–A3 are transparently passed to the internal latches or held static. 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 stable regardless of subsequent address changes. This enables precise timing control in synchronous systems.

Can the 74HC4514N,652 operate at 3.3 V supply voltage?

Yes, the 74HC4514N,652 is fully specified for operation from 2.0 V to 6.0 V, including 3.3 V. At VCC = 3.3 V, VIH is guaranteed ≥2.31 V and VIL ≤0.99 V, providing >1.3 V noise margin. Propagation delay increases to ~65 ns (typical), remaining suitable for most 3.3 V logic applications such as FPGA I/O expansion or microcontroller peripheral selection.

How does the E input differ from LE in the 74HC4514N,652?

In the 74HC4514N,652, LE controls latching of address inputs (A0–A3), while E (Enable) independently gates the 16 outputs. E is active LOW: when E = LOW, the output corresponding to the latched address goes HIGH; when E = HIGH, all Q0–Q15 are forced LOW regardless of latch content or LE state. This separation allows independent control of data routing and output activation.

Is the 74HC4514N,652 pin-compatible with the 74HCT4514N,652?

Yes, the 74HC4514N,652 and 74HCT4514N,652 share identical pinout, package, and functional behavior. The only difference is input voltage thresholds: 74HC4514N,652 uses CMOS-level inputs (VIH ≈ 0.7×VCC), while 74HCT4514N,652 uses TTL-level inputs (VIH = 2.0 V min). Both are interchangeable in layout but require verification of source logic family compatibility.

What is the maximum output current per pin for the 74HC4514N,652?

The 74HC4514N,652 specifies ±4.0 mA DC output current per Qn pin at VCC = 4.5 V, with VOL ≤ 0.26 V and VOH ≥ 3.98 V under those conditions. This supports direct driving of standard 74HC inputs (fan-out ≥ 10) or LED indicators with series resistors. Exceeding ±4.0 mA risks violating VOL/VOH specs or increasing junction temperature beyond safe limits.