NXP Semiconductors 74HC4515N,652

Overview

74HC4515N,652 from Nexperia is a 4-to-16 line inverting decoder/demultiplexer with input latches, operating across −40 °C to +125 °C, featuring 16 active-low outputs (Q0–Q15), latch enable (LE) and enable (E) inputs, and CMOS-compatible input levels. It serves as an address decoder in microcontroller peripheral expansion systems where stable output selection under asynchronous address changes is required.

For engineers reviewing the 74HC4515N,652 datasheet, 74HC4515N,652 pinout, 74HC4515N,652 application, or 74HC4515N,652 equivalent, key selection criteria include latch-controlled output stability, inverting demultiplexing behavior, SO24 package compatibility, −40 °C to +125 °C industrial temperature range, and propagation delay ≤50 ns at VCC = 4.5 V.

Technical Context

The 74HC4515N,652 implements a two-stage architecture: four address inputs (A0–A3) feed into transparent D-type latches enabled by LE, followed by a 4-bit binary decoder that drives 16 mutually exclusive inverting outputs. Latch operation decouples address sampling from output activation, enabling glitch-free output selection during bus transitions.

Enable control is independent of latching: E is an active-low global output enable that forces all Qn outputs HIGH when asserted (E = HIGH), while LE controls data capture timing without affecting output state. Inputs include clamp diodes supporting interface to voltages exceeding VCC via current-limiting resistors.

Key Specifications

Pinout & Package

74HC4515N,652 is housed in a plastic small outline package (SO24, SOT137-1) with 24 leads, 7.5 mm body width, and standard 1.27 mm lead pitch - compatible with automated PCB assembly and IPC-7351B footprint standards.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC4515N,652, the 74HC154D,653 offers identical decoding but no latch protection against address glitches, while the SN74LS4515N provides TTL-level compatibility at the cost of temperature range, supply flexibility, and ESD robustness - making 74HC4515N,652 optimal for new designs requiring latch-stable decoding in extended environments.

Availability

74HC4515N,652 is available at Aetrix Electronics and suitable for industrial control systems, programmable logic modules, and memory expansion subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC4515N,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 manufacturing and quality certification to ISO 9001 and IATF 16949 standards.

The 74HC4515N,652 belongs to Nexperia's 74HC high-speed CMOS logic family, designed for low-power, noise-immune digital interfacing in industrial, automotive, and consumer applications requiring robust timing and latch-controlled signal routing.

FAQ

What is the primary function of the 74HC4515N,652 in digital systems?

The 74HC4515N,652 functions as a 4-to-16 line inverting decoder/demultiplexer with input latches. It converts four binary address inputs (A0–A3) into one of sixteen active-LOW outputs (Q0–Q15), with latch enable (LE) allowing asynchronous capture of address data. This makes the 74HC4515N,652 ideal for stable address decoding in microcontroller peripheral expansion, memory selection, and programmable logic control where output stability during address transitions is critical.

How does the latch enable (LE) input affect the operation of the 74HC4515N,652?

When LE is HIGH, the 74HC4515N,652 operates transparently: outputs respond immediately to changes on A0–A3. When LE transitions LOW, the current A0–A3 values are stored in internal latches, freezing the decoded output state regardless of subsequent address changes. This latch behavior prevents glitches during dynamic bus activity and ensures deterministic output selection - a key capability distinguishing the 74HC4515N,652 from non-latching alternatives like the 74HC154.

What are the absolute maximum ratings for the 74HC4515N,652 supply voltage and operating temperature?

The 74HC4515N,652 has an absolute maximum supply voltage (VCC) of −0.5 V to +7.0 V and a storage temperature range of −65 °C to +150 °C. Its recommended operating conditions specify VCC from 2.0 V to 6.0 V and ambient temperature from −40 °C to +125 °C. Exceeding these limits - especially applying VCC > 7.0 V or operating above +125 °C - risks permanent damage per IEC 60134 limiting values, and the 74HC4515N,652 is not warranted for continuous operation outside its specified industrial temperature range.

Can the 74HC4515N,652 interface directly with 3.3 V microcontrollers?

Yes, the 74HC4515N,652 supports 3.3 V operation within its recommended VCC range of 2.0 V to 6.0 V. Its CMOS input thresholds (VIH ≈ 2.1 V, VIL ≈ 1.35 V at VCC = 4.5 V) ensure reliable recognition of 3.3 V logic levels, and its outputs swing rail-to-rail - delivering ~3.3 V HIGH and <0.1 V LOW when powered at 3.3 V. No level-shifting circuitry is required, making the 74HC4515N,652 suitable for mixed-voltage designs with modern low-voltage MCUs.

What package type is used for the 74HC4515N,652 and how does it compare to the 74HC4515D variant?

The 74HC4515N,652 uses the SO24 (SOT137-1) plastic small outline package with 24 leads and 7.5 mm body width. While functionally identical to the 74HC4515D, the 74HC4515N,652 shares the same pinout and electrical specifications but differs in packaging - the "N" suffix denotes the same SO24 package as the "D" variant per Nexperia's ordering documentation. Both variants are pin-compatible and interchangeable in PCB layouts designed for SOT137-1.