Analog Devices Inc./Maxim Integrated MAX4515EUK-T

Overview

MAX4515EUK-T from Maxim Integrated is a normally closed (NC), single-pole/single-throw (SPST), CMOS analog switch optimized for low-voltage, rail-to-rail signal routing. It operates from a single +2V to +12V supply, delivers 10Ω on-resistance at +12V, guarantees ≤20nA off-leakage at +85°C, and supports TTL/CMOS logic compatibility with +5V supply-ideal for battery-powered audio/video switching and low-voltage data acquisition.

For engineers reviewing the MAX4515EUK-T datasheet, MAX4515EUK-T pinout, MAX4515EUK-T application, or MAX4515EUK-T equivalent, key selection criteria include NC default state, SOT23-5 package footprint, guaranteed on-resistance flatness (≤3Ω), charge injection (10pC), and break-before-make timing behavior at +5V.

Technical Context

The MAX4515EUK-T implements a CMOS transmission-gate architecture with integrated level translators, enabling direct interface to +5V TTL/CMOS logic while operating from supplies as low as +2V. Its internal ESD protection diodes clamp analog signals to V+ and GND, defining the absolute maximum analog input range as -0.3V to (V+ + 0.3V).

Switching is controlled by a single digital input (IN) that toggles the NC path: logic high opens the switch (OFF), logic low maintains continuity (ON). Timing is characterized with t_ON = 150ns and t_OFF = 100ns at +25°C and +5V supply, confirming break-before-make operation where t_ON > t_OFF.

Key Specifications

Pinout & Package

SOT23-5 surface-mount package (3.099mm × 1.499mm × 1.17mm), RoHS-compliant, tape-and-reel packaged per EIA-481-1 standard.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SPST analog switch applications.

Compared with MAX4515ESA and ADG821BRMZ, the MAX4515EUK-T uniquely balances wide supply range (+2V to +12V), SOT23-5 miniaturization, and guaranteed NC behavior - making it optimal for space-constrained, multi-voltage industrial and portable designs where fail-safe closure is mandatory.

Availability

MAX4515EUK-T is available at Aetrix Electronics and suitable for battery-operated equipment, audio/video signal routing, and low-voltage data-acquisition systems requiring stable component supply across extended temperature ranges (-40°C to +85°C).

Supply support for MAX4515EUK-T 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

Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.

The MAX4514/MAX4515 family was designed specifically for low-voltage, low-on-resistance analog switching in portable and space-constrained systems - emphasizing rail-to-rail operation, nanoscale leakage control, and robust logic interfacing.

FAQ

What is the default switch state of the MAX4515EUK-T?

The MAX4515EUK-T is a normally closed (NC) analog switch: the COM-to-NC path is conductive when the IN pin is logic low (≤0.8V), and opens when IN is logic high (≥2.4V at +5V supply). This NC behavior ensures signal continuity during power-up or control-line undriven states, which is essential for fail-safe system design. The MAX4515EUK-T does not require external biasing to maintain its default closed state.

Does the MAX4515EUK-T support rail-to-rail analog signal operation?

Yes, the MAX4515EUK-T supports true rail-to-rail analog signal operation - signals from GND to V+ pass unattenuated through the switch path. This capability is enabled by its CMOS transmission-gate architecture and internal level translators, allowing full-swing AC and DC signals (e.g., ±2.5V bipolar or 0–5V unipolar) without clipping. The analog signal range is explicitly specified as 0V to V+ across all operating temperatures for the MAX4515EUK-T.

What is the maximum allowable supply voltage for the MAX4515EUK-T?

The absolute maximum supply voltage for the MAX4515EUK-T is +13V, but the recommended operating range is +2V to +12V. Operation at +12V yields optimal performance: on-resistance drops to 10Ω (max), and dynamic parameters like t_ON/t_OFF remain within specification. Exceeding +13V risks permanent damage due to internal ESD diode breakdown, and operation below +2V may result in undefined logic thresholds or increased R_ON - both outside the guaranteed specifications for the MAX4515EUK-T.

How does charge injection affect system accuracy with the MAX4515EUK-T?

Charge injection of 10pC (typical) in the MAX4515EUK-T causes a transient voltage glitch (ΔV = Q/C_L) at the output when the switch turns off. For example, with a 1nF load capacitance, ΔV ≈ 10mV - potentially corrupting sample-and-hold or ADC sampling. To mitigate this, use low-capacitance routing, add a small series resistor before the switch output, or select load capacitances ≥10nF to reduce ΔV to sub-millivolt levels. This behavior is fully characterized and guaranteed for the MAX4515EUK-T in its datasheet test circuits.

Can the MAX4515EUK-T be used with a +3.3V logic controller?

Yes, the MAX4515EUK-T can be driven by a +3.3V logic controller when powered from a +5V or higher supply - its logic thresholds (0.8V low, 2.4V high at +5V) are comfortably met. However, do not power the MAX4515EUK-T from +3.3V and drive IN from a +5V controller: the IN pin's absolute maximum rating is (V+ + 0.3V), so +5.3V would exceed the +3.6V limit and risk damage. Always match logic supply voltage to V+ or use a level shifter when supplies differ - a requirement explicitly stated for safe operation of the MAX4515EUK-T.