Analog Devices Inc./Maxim Integrated MAX314CUE+T

Overview

MAX314CUE+T from Maxim Integrated is a quad, single-pole/single-throw (SPST) CMOS analog switch with two normally closed (NC) and two normally open (NO) channels, 6.5Ω typical on-resistance, 1.5Ω max on-resistance matching between channels, and rail-to-rail signal handling across ±4.5V to ±20V dual supplies or +4.5V to +30V single supply. It is used in precision audio routing and data acquisition systems requiring low distortion and tight channel matching.

For engineers reviewing the MAX314CUE+T datasheet, MAX314CUE+T pinout, MAX314CUE+T application, or MAX314CUE+T equivalent, key selection criteria include verified NC/NO channel configuration, guaranteed R_ON flatness (≤2Ω), crosstalk >96dB at 20kHz, ESD tolerance >2000V per Method 3015.7, and TSSOP-16 package compatibility with high-density PCB layouts.

Technical Context

The MAX314CUE+T implements a fully complementary CMOS transmission-gate architecture enabling bidirectional conduction with symmetrical on-resistance over the full analog signal range. Its logic interface accepts TTL/CMOS-compatible inputs referenced to VL (2.4V high, 0.8V low) independent of analog supply rails.

It features integrated overvoltage protection diodes on all analog terminals (COM, NO, NC), allowing safe operation with analog signals exceeding V+ or falling below V− when external blocking diodes are added. The device maintains ≤2Ω R_ON flatness from ±10V signal swing under ±15V supplies and exhibits <30pC charge injection for low glitch in sample-and-hold circuits.

Key Specifications

Pinout & Package

MAX314CUE+T is housed in a 16-pin TSSOP package (4.4mm width, 0.65mm pitch) with exposed pad for thermal enhancement and mechanical stability in reflow-soldered applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX314CUE+T, MAX313CUE+T removes NC capability but simplifies control logic, while ADG414BRUZ trades 5.4× higher R_ON for extended temperature range - making MAX314CUE+T optimal for precision, mixed-signal applications demanding both NC/NO flexibility and low distortion.

Availability

MAX314CUE+T is available at Aetrix Electronics and suitable for audio signal routing, test equipment multiplexing, and avionics sensor interface applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MAX314CUE+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 high-performance analog and mixed-signal ICs for precision, power, and interface applications across industrial, communications, and computing markets.

The MAX312/MAX313/MAX314 family was engineered specifically for low-distortion, high-fidelity analog signal routing in test, measurement, and audio systems where channel matching and signal integrity are critical.

FAQ

What is the maximum analog signal voltage range supported by the MAX314CUE+T?

The MAX314CUE+T supports analog signals from V− to V+ across its full specified supply range. With ±15V dual supplies, it handles ±10V signals; with +12V single supply, it supports 0V to +10V. Absolute maximum ratings allow VCOM, VNO, or VNC to reach within 2V of V+ or V−, provided internal clamping diodes are not forward-biased beyond 30mA peak current. This makes MAX314CUE+T suitable for both bipolar sensor conditioning and unipolar data acquisition.

Does the MAX314CUE+T require external pull-up or pull-down resistors on its logic inputs?

No, the MAX314CUE+T does not require external pull-up or pull-down resistors on IN1–IN4. Its logic inputs are TTL/CMOS-compatible with guaranteed thresholds of VINH ≥ 2.4V and VINL ≤ 0.8V at VL = 5V, and input leakage remains ≤ ±0.5µA across temperature. Internal input structure provides sufficient noise immunity for direct microcontroller GPIO interfacing, though system-level ESD protection may still be recommended at board edges.

How does the MAX314CUE+T achieve break-before-make timing, and is it guaranteed?

The MAX314CUE+T guarantees break-before-make timing of 70ns typical (measured per Figure 3 in the datasheet) between its paired NC/NO switches (e.g., IN1 controls NC1/NO1). This is achieved via internal logic delay circuitry that ensures the NC path opens before the NO path closes. Unlike MAX312/MAX313, only MAX314 implements this feature - critical for preventing momentary shorts in multiplexer-based signal routing. Timing is production-tested and specified over temperature.

Can the MAX314CUE+T operate with VL tied to V+ in a single-supply configuration?

Yes, the MAX314CUE+T allows VL to be tied directly to V+ in single-supply operation. When V+ = +12V, VL = +12V satisfies the VL specification of (GND − 0.3V) to (V+ + 0.3V). Logic thresholds scale accordingly: VINH becomes ~9.6V and VINL ~3.2V, remaining compatible with 12V-tolerant microcontrollers or discrete level-shifting circuits. This configuration eliminates a separate logic rail while preserving full analog performance.

What is the thermal performance of the MAX314CUE+T in TSSOP-16 package at full load?

In TSSOP-16 package, the MAX314CUE+T has a thermal resistance θ_JA of 149°C/W and derates at 6.7mW/°C above +70°C ambient. At maximum continuous COM/NO/NC current (±100mA) and worst-case R_ON (10Ω), power dissipation per channel is 100mW - resulting in ~15°C junction rise above ambient. With four channels active simultaneously, total die temperature rise remains within safe limits (<+125°C) up to +105°C ambient, assuming standard 2-layer PCB layout with adequate copper pour.