Analog Devices Inc./Maxim Integrated MAX314CSE

Overview

MAX314CSE 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. It features 10Ω maximum on-resistance, 1.5Ω max on-resistance matching between channels, rail-to-rail signal handling, and operates from ±4.5V to ±20V dual supplies or +4.5V to +30V single supply. It is used in audio signal routing and data acquisition systems where bidirectional low-distortion switching is required.

For engineers reviewing the MAX314CSE datasheet, MAX314CSE pinout, MAX314CSE application, or MAX314CSE equivalent, key selection criteria include verified on-resistance flatness (≤2Ω), guaranteed ESD protection (>2000V per Method 3015.7), crosstalk performance (>96dB at 20kHz), and precise NC/NO channel configuration for break-before-make signal path control.

Technical Context

The MAX314CSE implements a CMOS transmission-gate architecture enabling symmetrical conduction in both directions, with logic-level inputs referenced to VL (logic supply) and analog signals spanning rail-to-rail across V+ and V−. Its internal charge-pump–assisted gate drive ensures consistent R_ON over temperature and signal voltage range.

It supports true break-before-make timing (t_D = 70ns typical) between complementary NO/NC pairs-critical for preventing momentary shorts in mixed-signal multiplexing. The device guarantees <2.5nA off-leakage at +85°C and maintains ≤0.5nA on-leakage across its full operating temperature range.

Key Specifications

Pinout & Package

The MAX314CSE is housed in a 16-pin narrow SOIC (SO) package with 1.27mm pitch, JEDEC MS-012 compliant, body size 9.9mm × 3.9mm × 1.75mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG414BRZ and TS5A23157DGSR, the MAX314CSE uniquely delivers matched NC/NO channel pairs with sub-10Ω R_ON and full ±20V dual-supply support-making it irreplaceable in rail-to-rail, low-distortion, mixed-polarity analog routing.

Availability

MAX314CSE is available at Aetrix Electronics and suitable for test equipment, avionics signal conditioning, and data acquisition systems requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX314CSE 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 semiconductor solutions for industrial, communications, and aerospace markets.

The MAX312/MAX313/MAX314 product line was engineered specifically for low-distortion, high-fidelity analog signal routing in environments demanding rail-to-rail operation, tight R_ON matching, and robust ESD tolerance.

FAQ

What is the maximum allowable voltage difference between V+ and V− for the MAX314CSE?

The MAX314CSE specifies an absolute maximum V+ to V− rating of +44V. This allows operation with ±20V dual supplies (40V total) while maintaining 4V headroom for transient margin. Exceeding this limit risks permanent damage to the internal CMOS transmission gates and ESD protection structures. Always verify supply sequencing-V+ and V− should be established before applying logic or analog signals to the MAX314CSE.

Does the MAX314CSE support single-supply operation, and what is the minimum V+ voltage?

Yes, the MAX314CSE supports single-supply operation with V− tied to GND and V+ ranging from +4.5V to +30V. The minimum functional V+ is +4.5V-below this, R_ON rises sharply and logic thresholds become unreliable. At V+ = +4.5V, the device maintains full rail-to-rail analog swing (0V to +4.5V) and guarantees R_ON ≤ 10Ω with I_COM = 10mA. For optimal THD performance in audio, V+ ≥ +12V is recommended.

How does the MAX314CSE achieve break-before-make timing, and is it guaranteed across temperature?

The MAX314CSE achieves break-before-make timing through internal logic delay circuitry that forces a minimum 70ns gap (t_D) between turn-off of one switch and turn-on of its complementary partner-verified across −40°C to +85°C. This is intrinsic to the MAX314's dual-NO/dual-NC architecture and does not require external timing components. Unlike generic SPST switches, this behavior is electrically guaranteed in the datasheet and tested per Figure 3, making it suitable for fault-tolerant signal routing where momentary shorts must be avoided.

Can the MAX314CSE be used with logic supplies other than 5V, and what is the VL range?

Yes, the MAX314CSE accepts VL from 2.7V to 5.5V, allowing direct interfacing with 3.3V or 5V microcontrollers, FPGAs, and CPLDs without level shifters. Input thresholds scale with VL: VINH = 0.7 × VL and VINL = 0.3 × VL. At VL = 3.3V, logic high is recognized above 2.31V-compatible with most modern logic families. The VL pin must be decoupled with a 0.1µF ceramic capacitor to GND to suppress noise-induced switching glitches on the MAX314CSE.

What is the thermal performance of the MAX314CSE in narrow SOIC package at full load?

In the 16-pin narrow SOIC package, the MAX314CSE has a thermal resistance θ_JA of 115°C/W. At maximum continuous current (±100mA per channel) and worst-case R_ON (10Ω), power dissipation per channel is 100mW, totaling 400mW for all four channels. This results in a junction-to-ambient rise of ~46°C above ambient-well within the +70°C commercial temperature grade. For sustained high-current operation, keep ambient below +50°C or add local copper pour to reduce θ_JA.