Analog Devices Inc./Maxim Integrated MAX312CUE+T

Overview

MAX312CUE+T from Maxim Integrated is a quad, single-pole/single-throw (SPST), normally closed (NC) CMOS analog switch optimized for precision signal routing in bipolar and single-supply systems. It delivers 6.5Ω typical on-resistance, 1.5Ω max on-resistance matching between channels, and rail-to-rail signal handling from ±4.5V to ±20V dual supplies or +4.5V to +30V single supply - enabling low-distortion audio routing and high-fidelity data acquisition.

For engineers reviewing the MAX312CUE+T datasheet, MAX312CUE+T pinout, MAX312CUE+T application, or MAX312CUE+T equivalent, key selection criteria include guaranteed R_ON flatness (≤2Ω), <2.5nA off-leakage at +85°C, >96dB crosstalk at 20kHz, ESD tolerance >2000V per Method 3015.7, and TSSOP-16 packaging for space-constrained PCB layouts.

Technical Context

The MAX312CUE+T implements a fully complementary CMOS switch architecture with matched P- and N-channel transistors per channel, ensuring symmetrical conduction and minimal charge injection (±30pC). Its logic interface accepts TTL/CMOS-compatible inputs referenced to VL (2.4V high, 0.8V low) independent of analog supply rails.

It supports true rail-to-rail analog signal switching across the full V+ to V− range, with guaranteed performance over 0°C to +70°C. On-resistance remains stable across temperature and signal voltage (±10V), and break-before-make timing is not applicable - as the MAX312 is purely NC (no internal BBM circuitry).

Key Specifications

Pinout & Package

MAX312CUE+T is housed in a 16-pin TSSOP package (4.4mm × 5.0mm, 0.65mm pitch), optimized for automated assembly and thermal performance in dense layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX312CUE+T, MAX313CUE+T provides identical performance in an NO configuration - ideal for safety-critical defaults - while ADG411BRUZ trades analog fidelity for speed and broader commercial temperature support, making it unsuitable for low-distortion or high-matching applications.

Availability

MAX312CUE+T is available at Aetrix Electronics and suitable for test equipment, avionics signal conditioning, and data acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial and aerospace programs.

Supply support for MAX312CUE+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) designs precision analog, mixed-signal, and power management ICs for industrial, communications, and automotive markets - emphasizing high reliability, low power, and signal integrity.

The MAX312/MAX313/MAX314 family targets high-fidelity analog signal routing applications demanding low on-resistance, tight channel matching, and rail-to-rail operation - especially in test instrumentation and audio infrastructure.

FAQ

What is the operating temperature range for MAX312CUE+T?

The MAX312CUE+T is rated for 0°C to +70°C ambient operation. This commercial-grade temperature range is defined by the 'C' suffix in the part number and validated per Maxim's production testing. The device maintains full electrical specifications - including R_ON, leakage, and switching times - across this range. For extended temperature applications, consider the MAX312EUE+T (−40°C to +85°C) or MAX312MJE (−55°C to +125°C) variants.

Is MAX312CUE+T pin-compatible with the DG411?

Yes, MAX312CUE+T is explicitly pin-compatible with the DG411 in its normally closed (NC) configuration. Pin assignments for IN, COM, NC, V+, V−, GND, and VL match identically in the 16-pin TSSOP package. No PCB redesign is needed when upgrading from DG411 to MAX312CUE+T - though users must verify logic polarity (active-low enable) and supply voltage compatibility in their specific circuit.

Does MAX312CUE+T support single-supply operation?

Yes, MAX312CUE+T supports single-supply operation from +4.5V to +30V. In this mode, V− is connected to GND, and analog signals swing from 0V to V+. The device retains rail-to-rail capability, with guaranteed R_ON flatness and low leakage across the full signal range. Single-supply use is common in portable instrumentation and industrial sensors where negative rails are unavailable.

What is the maximum analog signal voltage the MAX312CUE+T can handle?

The MAX312CUE+T supports analog signals from V− to V+, with absolute maximum ratings of −44V to +44V on V+ and V−. Under normal operation with ±15V supplies, the usable analog range is ±10V - verified in the Electrical Characteristics table. Exceeding ±10V requires external clamping diodes (as shown in Figure 1 of the datasheet) to protect internal ESD structures.

How does the logic supply VL affect MAX312CUE+T operation?

VL sets the logic threshold for IN1–IN4 inputs and must be ≥2.0V and ≤V+. At VL = 5V, logic high is ≥2.4V and logic low is ≤0.8V - compatible with standard TTL/CMOS outputs. VL is electrically isolated from analog supplies, allowing independent voltage domains (e.g., 3.3V logic with ±15V analog rails). Incorrect VL voltage causes undefined switching behavior or increased input current.