Analog Devices Inc./Maxim Integrated MAX319ESA

Overview

MAX319ESA from Maxim Integrated is a precision SPDT CMOS analog switch with one normally open (NO) and one normally closed (NC) channel, designed for rail-to-rail signal routing in high-fidelity sample-and-hold and test equipment circuits. It delivers <35Ω max on-resistance, <10pC charge injection, <6nA off-leakage at +85°C, and 175ns turn-on time under ±15V dual supply.

For engineers reviewing the MAX319ESA datasheet, MAX319ESA pinout, MAX319ESA application, or MAX319ESA equivalent, this page provides verified electrical parameters, SO-8 package details, real-world use cases in military radios and PBX systems, and two validated alternative parts with documented functional trade-offs.

Technical Context

The MAX319ESA implements a break-before-make switching architecture with guaranteed 5–13ns transition delay, enabling safe signal path reconfiguration without momentary shorting. Its silicon-gate process ensures matched on-resistance (<2Ω between NO/NC channels) and flat on-resistance (∆3Ω max) over the full ±15V analog range.

It supports both bipolar supplies (±4.5V to ±20V) and single supplies (+10V to +30V), with TTL/CMOS-compatible logic input (VL referenced to GND) and independent analog supply pins (V+, V−). The COM terminal serves as common analog path, while NC and NO are isolated signal terminals controlled by a single IN logic input.

Key Specifications

Pinout & Package

MAX319ESA is housed in an 8-pin SO (Small Outline) package, 150-mil width, with standard JEDEC MS-012AC footprint (5.0mm × 4.0mm body, 1.27mm pitch). Pin 1 is marked with a beveled corner or dot.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX319ESA, ADG1419BRMZ offers lower on-resistance and extended temperature range but sacrifices logic supply independence, while TS5A3159DCKR excels in low-voltage efficiency yet cannot replace MAX319ESA in any application requiring negative analog supplies or rail-to-rail bipolar signal handling.

Availability

MAX319ESA is available at Aetrix Electronics and suitable for guidance and control systems, military radios, and PBX infrastructure requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX319ESA 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, communications, and defense markets.

The MAX317/MAX318/MAX319 family was engineered for precision analog signal routing in mission-critical systems where low leakage, matched resistance, and rail-to-rail operation are non-negotiable - especially in test equipment and avionics.

FAQ

What is the maximum analog signal voltage range supported by the MAX319ESA?

The MAX319ESA supports a bipolar analog signal range of ±15V when operated with ±15V supplies, and a single-supply range of 0V to +12V with +12V V+. Its absolute maximum ratings allow V+ up to +44V and V− down to −44V relative to each other, enabling rail-to-rail signal handling across demanding industrial and military voltage rails. This capability is confirmed in the Electrical Characteristics tables for dual- and single-supply operation.

Does the MAX319ESA require separate logic and analog grounds?

No - the MAX319ESA uses a single GND pin (Pin 2) that serves as the reference for the logic input (IN) and logic supply (VL), but analog signals are referenced to V+ and V−. While GND and analog return paths may share a common node in many designs, best practice for noise-sensitive applications (e.g., precision sample-and-hold) is to partition ground planes and tie them at a single point near the MAX319ESA's GND pin to minimize coupling. This layout guidance is reinforced in the Applications Information section.

Can the MAX319ESA operate with unbalanced supplies such as +24V and −5V?

Yes - the MAX319ESA explicitly supports unbalanced supplies like +24V and −5V, as stated in the Applications Information section. The key constraint is that the difference between V+ and V− must not exceed +44V, and analog signal voltages must remain within the (V− − 2V) to (V+ + 2V) range. In this configuration, the analog signal range becomes −7V to +26V, preserving functionality in systems with asymmetric power architectures.

What is the guaranteed on-resistance match between the NO and NC channels of the MAX319ESA?

The MAX319ESA guarantees on-resistance matching of ≤2Ω between its NO and NC channels at +25°C, and ≤3Ω across the full operating temperature range (−40°C to +85°C), as specified in the Electrical Characteristics table under "On Resistance Match Between Channels." This tight matching is critical for applications like differential signal routing or calibration path selection where gain consistency between switched paths is essential.

Is the MAX319ESA pin-compatible with the MAX317ESA or MAX318ESA?

No - although all three devices share the same SO-8 package and pin count, their pinouts differ significantly. The MAX319ESA places NC on Pin 8 and NO on Pin 7, whereas MAX317ESA places NC on Pin 1 and N.C. (no connect) on Pin 8, and MAX318ESA places NO on Pin 1 and N.C. on Pin 8. Swapping them without board revision will result in incorrect or nonfunctional switching behavior, as confirmed in the Pin Description and Pin Configurations sections.