Analog Devices Inc./Maxim Integrated MAX395EAG+T

Overview

MAX395EAG+T from Maxim Integrated is an 8-channel, serially controlled, single-pole/single-throw (SPST) CMOS analog switch with rail-to-rail signal handling, 100Ω max on-resistance (±5V supplies), 5Ω max channel-to-channel on-resistance match, and <0.1nA off-leakage at +25°C. It operates from ±2.7V to ±8V dual supplies or +2.7V to +16V single supply and is used in precision audio routing and industrial data-acquisition systems requiring low distortion and high channel isolation.

For engineers reviewing the MAX395EAG+T datasheet, MAX395EAG+T pinout, MAX395EAG+T application, or MAX395EAG+T equivalent, key selection criteria include its SPI/QSPI/Microwire-compatible 3-wire interface, daisy-chainable DOUT output, asynchronous RESET, TTL/CMOS logic compatibility at +5V/±5V, and guaranteed -40°C to +85°C operating range.

Technical Context

The MAX395EAG+T implements an 8-bit shift register architecture synchronized to SCLK's rising edge, with latch update triggered by the rising edge of CS-fully compliant with SPI Mode 0 (CPOL=0, CPHA=0) and Microwire timing. Its internal logic drives eight independent SPST switches via parallel register translation, enabling simultaneous channel configuration updates without glitching.

All NOx/COMx terminals are bidirectional and electrically symmetric; on-resistance flatness (≤15Ω over ±3V signal range) and channel matching (≤5Ω) are specified under dual-supply conditions (±5V). The device features >2kV HBM ESD protection and supports daisy-chaining via DOUT-to-DIN cascading while maintaining deterministic timing (tON ≤ 400ns, tOFF ≤ 400ns at ±5V).

Key Specifications

Pinout & Package

MAX395EAG+T is packaged in a 24-pin wide SO (SOIC-W) surface-mount package with standard 0.300" body width and 1.27mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX395CAG+, MAX395EAG+T adds extended temperature support and qualifies for industrial deployment; compared with ADG1408BRUZ, it trades lower RON for integrated daisy-chaining, broader supply flexibility (+2.7V to +16V), and simpler board-level integration in multi-device systems.

Availability

MAX395EAG+T is available at Aetrix Electronics and suitable for industrial data-acquisition, avionics signal conditioning, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX395EAG+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, automotive, communications, and computing markets.

The MAX395 series was developed specifically for serially controlled, high-channel-count analog switching in space-constrained, noise-sensitive systems where SPI interface simplicity and rail-to-rail signal integrity are essential.

FAQ

What supply configurations does the MAX395EAG+T support?

The MAX395EAG+T supports dual supplies from ±2.7V to ±8V or a single supply from +2.7V to +16V. When using single-supply operation, V− must be tied to GND. All analog signal voltages must remain within (V− − 2V) to (V+ + 2V), and digital inputs (SCLK, DIN, CS, RESET) require logic thresholds compatible with +5V or ±5V supplies - confirmed in the MAX395EAG+T Electrical Characteristics tables for all three supply modes.

How does the MAX395EAG+T handle daisy-chaining of multiple devices?

The MAX395EAG+T uses its DOUT pin (Pin 22) to enable daisy-chaining: DOUT of one device connects to DIN of the next, with shared SCLK and CS lines. During CS low, up to N × 8 bits are shifted in; on CS rising edge, all N devices update their switch states simultaneously. This eliminates timing skew and reduces control bus overhead - a verified capability documented in the MAX395EAG+T Functional Diagram and Applications Information section.

Is the MAX395EAG+T pin-compatible with the MAX335?

Yes, the MAX395EAG+T is explicitly stated as pin-compatible with the industry-standard MAX335 in the MAX395EAG+T General Description and Features sections. Both share identical 24-pin SO and DIP footprints, matching pin functions including SCLK, DIN, DOUT, CS, RESET, V+, V−, GND, and all eight NOx/COMx pairs - enabling drop-in replacement where temperature range and supply requirements align.

What is the guaranteed on-resistance match between channels in the MAX395EAG+T?

The MAX395EAG+T guarantees ≤5Ω maximum on-resistance match (∆RON = RON(max) − RON(min)) between any two channels when tested under ±5V supplies at TA = +25°C, as specified in the Dual Supplies Electrical Characteristics table. This parameter is measured across the full signal range and ensures consistent gain/attenuation in multi-path analog signal routing applications.

Does the MAX395EAG+T support single-supply operation with +3.3V logic levels?

Yes, the MAX395EAG+T supports +3.3V single-supply operation: V+ = +3.3V, V− = GND. Its digital inputs (SCLK, DIN, CS, RESET) have 0.8V to 2.4V logic thresholds - fully compatible with +3.3V TTL/CMOS logic. The Electrical Characteristics table for Single +3V Supply confirms VIH = 2.4V and VIL = 0.8V, and RON = 600Ω max at V+ = 3.0V, validating functional operation at this voltage.