Analog Devices Inc./Maxim Integrated MAX4680CPE+

Overview

MAX4680CPE+ from Maxim Integrated is a dual SPST CMOS analog switch with two normally closed (NC) channels, designed for precision signal routing in rail-to-rail analog paths. It delivers 1.25Ω max on-resistance, 0.3Ω max R_ON match between channels, and 5nA max off-leakage at +85°C, enabling low-distortion switching in data acquisition and test equipment.

For engineers reviewing the MAX4680CPE+ datasheet, MAX4680CPE+ pinout, MAX4680CPE+ application, or MAX4680CPE+ equivalent, key selection criteria include guaranteed NC configuration, ±4.5V to ±20V dual-supply or +4.5V to +36V single-supply operation, TTL/CMOS-compatible logic inputs via dedicated VL pin, and ESD robustness (>2kV per Method 3015.7).

Technical Context

The MAX4680CPE+ implements a dual-channel, normally closed analog switch architecture using high-voltage CMOS process technology. Its internal structure isolates analog signal paths (COM/NC) from logic control (IN/VL), enabling independent supply domains: V+/V− for analog rails and VL for logic-level compatibility across full supply ranges.

Each channel guarantees break-before-make is *not* implemented-consistent with its NC-only topology-while maintaining flat on-resistance (≤0.3Ω variation) over ±10V signal range and matched R_ON (≤0.3Ω delta) for differential or ratiometric applications. Input voltage range extends to (V− − 0.3V) to (V+ + 0.3V) on all analog pins, clamped by integrated protection diodes.

Key Specifications

Pinout & Package

MAX4680CPE+ is housed in a 16-pin plastic DIP package (0.300" width), through-hole mountable, with standard JEDEC MO-001AC footprint and 0.1" pin pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4690CPE+, MAX4680CPE+ provides fail-safe closed-path behavior critical for monitoring; compared with ADG1419BRZ, it supports true bipolar analog rails and isolated logic control - both differences directly impact system-level reliability and signal integrity.

Availability

MAX4680CPE+ is available at Aetrix Electronics and suitable for reed relay replacement, data acquisition systems, test equipment signal routing, communication system channel selection, and sample-and-hold circuits requiring stable component supply across industrial temperature ranges.

Supply support for MAX4680CPE+ 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 high-reliability ICs for industrial, medical, and communications applications.

The MAX4680CPE+ belongs to Maxim's high-performance analog switch product line, engineered specifically for low-R_ON, rail-to-rail signal integrity, and robust operation in automated test and data acquisition systems.

FAQ

What is the maximum allowable voltage difference between V+ and V− for MAX4680CPE+?

The absolute maximum rating specifies V+ to V− must not exceed +44V. This limit ensures safe operation under transient conditions and prevents junction breakdown. The MAX4680CPE+ is rated for continuous dual-supply operation from ±4.5V to ±20V - a 40V span - leaving 4V margin below the 44V absolute maximum. Exceeding this risks permanent damage, as confirmed in the Absolute Maximum Ratings table.

Does MAX4680CPE+ support break-before-make switching?

No, MAX4680CPE+ does not implement break-before-make. It is a dual normally closed (NC) switch; both channels conduct when logic inputs are low and open when high. Break-before-make is exclusive to the MAX4700 variant (one NC + one NO), as explicitly stated in the General Description and Truth Tables. Using MAX4680CPE+ in place of MAX4700 will result in simultaneous opening/closing without guaranteed dead time.

Can MAX4680CPE+ operate with V− grounded and V+ at +12V?

Yes, MAX4680CPE+ supports single-supply operation with V− = GND and V+ = +12V. The Electrical Characteristics–Single Supply section confirms full functionality at V+ = +12V, V− = 0V, including 1.25Ω max R_ON, 5nA max off-leakage, and rail-to-rail signal handling from 0V to +12V. This configuration is validated across the 0°C to +70°C temperature range for the C-grade version.

What is the purpose of the VL pin on MAX4680CPE+?

The VL pin provides an independent logic supply reference, decoupling TTL/CMOS input thresholds from analog supply rails. This allows MAX4680CPE+ to accept 3.3V or 5V logic signals while operating with ±15V analog supplies - eliminating level shifters. Per the datasheet, VL must be between −0.3V and (V+ + 0.3V), and logic inputs (IN1/IN2) are referenced solely to VL, not V+ or V−.

Is MAX4680CPE+ pin-compatible with other variants in the MAX4680/MAX4690/MAX4700 family?

Yes, MAX4680CPE+, MAX4690CPE+, and MAX4700CPE+ share identical 16-pin DIP pinouts and footprints, as shown in the Pin Configurations diagrams. However, their internal switch configurations differ: MAX4680CPE+ is dual NC, MAX4690CPE+ is dual NO, and MAX4700CPE+ is mixed NC/NO with break-before-make. Swapping them requires logic inversion and functional validation - they are mechanically compatible but not functionally interchangeable.