Analog Devices Inc./Maxim Integrated MAX317ESA

Overview

MAX317ESA from Maxim Integrated is a precision CMOS single-pole single-throw (SPST) analog switch with normally closed (NC) configuration, designed for rail-to-rail signal routing in precision analog systems. It delivers <35Ω maximum on-resistance, <2Ω guaranteed match between channels, <10pC charge injection, and operates across –40°C to +85°C with ±4.5V to ±20V or +10V to +30V supply ranges - ideal for sample-and-hold circuits and military radio front-ends.

For engineers reviewing the MAX317ESA datasheet, MAX317ESA pinout, MAX317ESA application, or MAX317ESA equivalent, key selection criteria include guaranteed on-resistance flatness (∆3Ω max), sub-6nA off-leakage at +85°C, ESD tolerance >±2000V, TTL/CMOS logic compatibility, and SO-8 package suitability for space-constrained industrial and defense designs.

Technical Context

The MAX317ESA implements a silicon-gate CMOS architecture optimized for low distortion and minimal signal perturbation. Its NC topology routes the COM terminal to NC when IN is logic low, with break-before-make behavior absent (single SPST structure). Internal design guarantees matched on-resistance and flat R_ON over full analog signal range (±15V) under bipolar supplies.

Charge injection is minimized via balanced transistor layout and gate drive tuning, enabling accurate sampling in high-resolution data acquisition. The device supports dual-supply operation with independent V+ (analog positive), V– (analog negative), and VL (logic supply) pins - allowing flexible interface with mixed-signal systems without level-shifting circuitry.

Key Specifications

Pinout & Package

MAX317ESA is housed in an 8-pin SO (Small Outline) package per JEDEC MS-012, with 1.27mm lead pitch and gull-wing leads. Thermal resistance θ_JA = 170°C/W; rated for 471mW continuous power dissipation at +70°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1419BRMZ and TS5A23157DCUR, the MAX317ESA uniquely supports true bipolar operation with guaranteed R_ON matching and sub-10pC charge injection - making it irreplaceable in precision instrumentation and defense-grade analog signal routing where supply flexibility and signal fidelity are non-negotiable.

Availability

MAX317ESA is available at Aetrix Electronics and suitable for sample-and-hold circuits, guidance and control systems, heads-up displays, and military radios requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX317ESA 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.

The MAX317ESA belongs to Maxim's precision analog switch family engineered for low-distortion, rail-to-rail signal routing in demanding environments - emphasizing parameter guarantees (R_ON match, charge injection, leakage) over typical-only specs.

FAQ

What is the maximum allowable analog signal range for MAX317ESA when operated with ±15V supplies?

The MAX317ESA supports an analog signal range of ±15V when operated with ±15V supplies - meaning the voltage at COM, NC, or NO terminals may swing from –15V to +15V relative to V–. This rail-to-rail capability is guaranteed per the datasheet's Electrical Characteristics table under "Analog-Signal Range" and confirmed in Figure 1 and Typical Operating Characteristics plots.

Does MAX317ESA require separate logic and analog grounds?

No - the MAX317ESA uses a single GND pin (Pin 2) for logic reference only; it does not require a dedicated analog ground. The device separates logic (VL, IN, GND) from analog (V+, V–, COM, NC) domains internally. System design should tie GND to the digital ground plane while maintaining clean separation between analog and digital supply returns to minimize noise coupling.

Can MAX317ESA be used with a single +12V supply, and how is VL configured?

Yes - MAX317ESA supports single-supply operation from +10V to +30V. When using +12V on V+, connect V– to GND (0V), and tie VL to +5V for TTL compatibility or to V+ (+12V) for CMOS logic levels. The datasheet confirms this in the "Operation with Supply Voltages Other Than ±15V" section and Single-Supply Electrical Characteristics table.

What is the guaranteed on-resistance match specification for MAX317ESA across its full operating temperature range?

The MAX317ESA guarantees on-resistance match between channels of ≤3Ω across its full operating temperature range of –40°C to +85°C, as specified in the Dual Supplies Electrical Characteristics table under "On Resistance Match Between Channels (Note 4)". This guarantee applies only under bipolar-supply operation (e.g., ±15V), not single-supply mode.

Is MAX317ESA pin-compatible with MAX318ESA or MAX319ESA?

No - although all three share the same SO-8 package and pin count, their pin functions differ significantly. MAX317ESA has NC on Pin 8 and N.C. on Pin 7; MAX318ESA swaps these (NO on Pin 7, COM on Pin 8); MAX319ESA assigns NO to Pin 8 and COM to Pin 2. Direct substitution would cause incorrect switching behavior or signal shorts - PCB layout and firmware logic must be redesigned for each variant.