Analog Devices Inc./Maxim Integrated MAX4515ESA+

Overview

The MAX4515ESA+ 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 fast switching (t_ON = 150ns, t_OFF = 100ns) in SOT23-5 packaging - ideal for battery-powered audio routing and low-voltage data-acquisition front-ends.

For engineers reviewing the MAX4515ESA+ datasheet, MAX4515ESA+ pinout, MAX4515ESA+ application, or MAX4515ESA+ equivalent, key selection criteria include NC logic behavior, guaranteed on-resistance flatness (≤3Ω), charge injection (10pC), TTL/CMOS compatibility at +5V, and thermal leakage performance across -40°C to +85°C.

Technical Context

The MAX4515ESA+ implements a complementary CMOS transmission-gate architecture with internal level-shifting logic, enabling rail-to-rail analog signal handling independent of digital control voltage. Its break-before-make timing (t_ON > t_OFF) prevents momentary shorting during state transitions when driven with +5V logic.

All analog terminals (COM, NC, NO) feature ESD protection diodes to V+ and GND, defining absolute maximum analog input range as -0.3V to (V+ + 0.3V). Leakage current originates solely from reverse-biased ESD diodes - not inter-terminal conduction - and scales predictably with temperature and supply voltage.

Key Specifications

Pinout & Package

SOT23-5 package (5-pin, 1.6mm × 2.9mm footprint), RoHS-compliant, surface-mountable. Pin 1 = NC (not internally connected), Pin 2 = IN (digital control), Pin 3 = GND, Pin 4 = COM (common terminal), Pin 5 = V+.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4517ESA+, the MAX4515ESA+ eliminates negative supply complexity while maintaining NC functionality and low leakage; compared with ADG1419BRMZ-REEL7, it trades higher R_ON for smaller size, lower cost, and simpler single-supply integration in consumer portable designs.

Availability

MAX4515ESA+ 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 industrial temperature grades.

Supply support for MAX4515ESA+ 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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, communications, and consumer applications.

The MAX4514/MAX4515 family targets low-power, low-distortion analog signal routing in space-constrained portable systems - emphasizing rail-to-rail operation, guaranteed leakage, and logic-compatible control without external level shifting.

FAQ

What is the logic polarity of the MAX4515ESA+ control input?

The MAX4515ESA+ features active-low logic: the switch is closed (conducting) when the IN pin is at logic LOW (≤0.8V), and open (non-conducting) when IN is at logic HIGH (≥2.4V at +5V supply). This NC behavior is fixed by internal topology and cannot be inverted externally. The MAX4515ESA+ does not support active-high or configurable logic polarity.

Can the MAX4515ESA+ operate from a 3.3V supply?

Yes, the MAX4515ESA+ is fully specified for +2V to +12V single-supply operation, including 3.3V. At +3.3V, on-resistance is typically 50Ω (max 75Ω), off-leakage remains ≤20nA at +85°C, and logic thresholds scale accordingly (V_IL ≈ 0.8V, V_IH ≈ 2.0V). No external components are needed for 3.3V compatibility.

Is the MAX4515ESA+ pin-compatible with the MAX4514ESA+?

Yes, the MAX4515ESA+ and MAX4514ESA+ share identical SOT23-5 pinout, package dimensions, and electrical interface - differing only in default switch state (NC vs. NO). They are drop-in replacements in the same footprint; only firmware or schematic logic inversion is required to maintain functional equivalence.

What is the maximum analog signal frequency supported by the MAX4515ESA+?

The MAX4515ESA+ maintains usable performance up to 250MHz in 50Ω systems, though off-isolation degrades above 10MHz (e.g., -45dB at 10MHz, decreasing ~20dB/decade). For precision DC–100kHz applications like sensor multiplexing, its low leakage and flat R_ON dominate performance; for RF sampling, layout-dependent parasitics become critical beyond 50MHz.

Does the MAX4515ESA+ require external ESD protection?

No - the MAX4515ESA+ integrates ESD protection diodes on all analog pins (COM, NC, NO) to both V+ and GND, rated >2000V per Method 3015.7. External TVS devices are unnecessary for typical board-level ESD events. However, system-level IEC 61000-4-2 compliance may still require additional board-level protection depending on connector exposure.