Analog Devices Inc./Maxim Integrated MAX4690CPE

Overview

MAX4690CPE from Maxim Integrated is a dual SPST normally open (NO) CMOS analog switch with 1.25Ω max on-resistance, ±4.5V to ±20V dual-supply or +4.5V to +36V single-supply operation, and rail-to-rail signal handling up to ±10V. It features guaranteed R_ON match ≤0.3Ω between channels and <5nA off-leakage at +85°C, making it suitable for precision data acquisition and automatic test equipment where mechanical relay replacement is required.

For engineers reviewing the MAX4690CPE datasheet, MAX4690CPE pinout, MAX4690CPE application, or MAX4690CPE equivalent, key selection criteria include verified NO-switch topology, 16-pin plastic DIP package compatibility, guaranteed break-before-make absence (distinguishing it from MAX4700), TTL/CMOS logic input compatibility across full supply range, and ESD robustness (>2kV per Method 3015.7).

Technical Context

The MAX4690CPE implements two independent normally open analog switches controlled by separate digital inputs (IN1, IN2), each connecting COMx to NOx when logic high. Its CMOS transmission-gate architecture enables rail-to-rail analog conduction with flat on-resistance (<0.3Ω variation) over the full ±10V signal range and low charge injection (±60pC typical).

It operates with independent analog supplies (V+, V−) and a dedicated logic supply (VL), decoupling logic-level compatibility from analog voltage rails. No internal break-before-make timing is implemented-unlike the MAX4700-making it strictly SPST-NO with simultaneous switching behavior confirmed in truth table and functional diagrams.

Key Specifications

Pinout & Package

MAX4690CPE is housed in a 16-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin spacing is 0.1 inch; lead finish is matte tin.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1419BRUZ and TS5A23157DCUR, the MAX4690CPE uniquely supports true dual-supply operation with guaranteed R_ON match and flatness across ±10V, making it the only option among the three qualified for precision bipolar signal routing in industrial test and measurement hardware.

Availability

MAX4690CPE is available at Aetrix Electronics and suitable for reed relay replacement, data acquisition systems, test equipment signal routing, communication system line switching, and sample-and-hold circuits requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX4690CPE 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.

The MAX4690CPE belongs to Maxim's precision analog switch product line, designed specifically for high-fidelity signal routing in automated test equipment and data acquisition systems demanding low on-resistance, matched channels, and robust rail-to-rail operation.

FAQ

What is the switching configuration of the MAX4690CPE?

The MAX4690CPE implements two independent normally open (NO) SPST analog switches. When logic input IN1 or IN2 is high, the corresponding COMx terminal connects to NOx; both switches remain open when inputs are low. This differs from the MAX4680 (NC) and MAX4700 (break-before-make NC/NO combo), and no internal interlock or timing control is present in the MAX4690CPE.

Does the MAX4690CPE support dual-supply operation?

Yes, the MAX4690CPE supports dual-supply operation from ±4.5V to ±20V, with separate V+ and V− pins. This allows true bipolar signal handling (e.g., ±10V) and is explicitly validated in the Electrical Characteristics tables for dual-supply conditions. The device also operates from a single +4.5V to +36V supply, with V− tied to GND.

What is the maximum allowable signal voltage range for the MAX4690CPE?

The MAX4690CPE handles rail-to-rail analog signals from V− to V+. Under ±15V dual-supply conditions, this supports ±10V signals with guaranteed performance (on-resistance flatness ≤0.3Ω, leakage ≤5nA). Absolute maximum ratings allow V+ to V− differentials up to 44V, but signal swing must stay within the supply rails to avoid clamping or damage.

Is the MAX4690CPE pin-compatible with other devices in the MAX4680/MAX4690/MAX4700 family?

Yes, the MAX4690CPE shares identical pinout and package (16-pin plastic DIP) with MAX4680CPE and MAX4700CPE. All three have identical pin assignments for COM1, COM2, NO1, NO2, V+, V−, GND, VL, IN1, IN2, and N.C. terminals. However, internal switch topology (NO vs NC vs break-before-make) differs, so functional substitution requires circuit-level validation.

What logic voltage levels are compatible with the MAX4690CPE control inputs?

The MAX4690CPE accepts TTL/CMOS-compatible logic inputs referenced to VL: logic low ≤0.8V and logic high ≥2.4V, guaranteed across the full analog supply range. VL may be supplied independently from +2.4V to +5.5V, enabling interface with 3.3V or 5V microcontrollers regardless of analog rail voltages.