Analog Devices Inc./Maxim Integrated MAX4517CUK

Overview

MAX4517CUK from Maxim Integrated is a normally closed (NC), single-pole/single-throw (SPST), dual-supply CMOS analog switch with 20Ω on-resistance at ±5V, 1nA off-leakage at +25°C, and rail-to-rail signal handling capability-used in low-voltage audio routing and battery-powered data-acquisition systems.

For engineers reviewing the MAX4517CUK datasheet, MAX4517CUK pinout, MAX4517CUK application, or MAX4517CUK equivalent, key selection criteria include guaranteed NC configuration, SOT23-5 package compatibility, ±1V to ±6V dual-supply operation, low charge injection (20pC max), and fast switching (t_ON = 100ns, t_OFF = 75ns).

Technical Context

The MAX4517CUK implements a fully differential CMOS transmission-gate architecture with independent V+ and V− supply pins driving both analog signal paths and internal logic-level translators. Its NC state is hardwired at die level-not controlled by input polarity-and remains conductive when IN is low (0V) and open when IN is high (V+).

All analog terminals (COM, NC, NO) feature reverse ESD diodes to both supplies, causing leakage current to vary with signal voltage relative to V+ and V−; off-leakage is specified as 1nA at +25°C and 20nA at +85°C, with on-leakage of 2nA/+25°C and 40nA/+85°C.

Key Specifications

Pinout & Package

SOT23-5 surface-mount package (3.0mm × 1.75mm × 1.3mm), lead-free and RoHS-compliant, optimized for space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4517CUK, MAX4517EUK extends thermal reliability without altering layout or firmware, while ADG1419BRMZ shifts design constraints toward single-supply simplicity and lower conduction loss-but at the cost of higher leakage and loss of true rail-to-rail analog support.

Availability

MAX4517CUK 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 commercial temperature ranges.

Supply support for MAX4517CUK 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 industrial, communications, and consumer applications.

The MAX4516/MAX4517 family delivers low-on-resistance, dual-supply analog switching for portable and signal-integrity-critical systems-specifically engineered for battery-powered audio, telecom interface, and sensor multiplexing where NC default behavior improves system robustness.

FAQ

What is the default state of the MAX4517CUK analog switch?

The MAX4517CUK is a normally closed (NC) SPST analog switch: its COM and NC terminals are conductive when the IN pin is low (0V or near V−). It opens only when IN is driven high (to V+). This default-closed behavior is intrinsic to the silicon design-not configurable via external bias-and ensures fail-safe continuity in power-loss or reset conditions. The MAX4517CUK does not require external pull-downs to maintain NC operation.

Can the MAX4517CUK operate from a single supply?

The MAX4517CUK is designed for dual-supply operation (±1V to ±6V) and is not characterized or guaranteed for single-supply use. While it may function with a single +2V to +12V rail, logic thresholds shift unpredictably, and analog performance (e.g., R_ON, leakage) degrades outside dual-rail conditions. For single-supply applications, Maxim recommends the pin-compatible MAX4514/MAX4515 series instead. The MAX4517CUK requires both V+ and V− to be actively biased for specification compliance.

What is the maximum allowable analog signal voltage range for the MAX4517CUK?

The MAX4517CUK supports rail-to-rail analog signals from V− to V+, meaning the full voltage range spans the difference between its negative and positive supply rails. With ±5V supplies, signals from −5V to +5V are fully supported; with ±1.5V supplies, the range is −1.5V to +1.5V. Exceeding V+ or V− on any analog pin forward-biases internal ESD diodes, limiting absolute maximum analog voltage to (V− − 0.3V) to (V+ + 0.3V) per Absolute Maximum Ratings. The MAX4517CUK must never see analog signals beyond these clamped bounds.

How does charge injection affect sampling accuracy in data-acquisition circuits using the MAX4517CUK?

Charge injection of up to 20pC in the MAX4517CUK causes a voltage step (∆V_OUT) on the sampled node equal to Q/CL, where CL is the total capacitance at the output. In a 1000pF sampling capacitor, this yields a 20mV glitch-potentially introducing offset error in 12-bit+ systems. To mitigate, place the MAX4517CUK upstream of the sample-and-hold amplifier, use guard traces, and minimize CL at the COM node. The MAX4517CUK's guaranteed 20pC max enables predictable error budgeting in precision DAQ front-ends.

Is the MAX4517CUK pin-compatible with other packages in the MAX4516/MAX4517 family?

Yes-the MAX4517CUK (SOT23-5) shares identical pin functions and numbering with the SO-8 and PDIP-8 variants of the MAX4517, though physical pin count differs. Pin 1 (IN), Pin 2 (NC), Pin 3 (V−), Pin 4 (V+), and Pin 5 (COM) map directly to the same electrical roles across all packages. However, the SOT23-5 lacks the NO and unused N.C. pins present in SO/PDIP versions. Layout migration from SO-8 to MAX4517CUK requires footprint redesign but preserves net connectivity and signal routing integrity for the five active terminals.