Analog Devices Inc./Maxim Integrated MAX308ESE+T

Overview

MAX308ESE+T from Maxim Integrated is a precision 8-channel single-ended CMOS analog multiplexer with on-resistance <100Ω, matched to within 5Ω between channels, flatness ≤7Ω over ±10V signal range, and NO-off leakage <5nA at +85°C. It operates from +5V to +30V single supply or ±5V to ±20V dual supplies and serves as a plug-in upgrade for DG408 in sample-and-hold, ATE, and audio routing systems.

For engineers reviewing the MAX308ESE+T datasheet, MAX308ESE+T pinout, MAX308ESE+T application, or MAX308ESE+T equivalent, key selection criteria include guaranteed on-resistance matching, rail-to-rail analog signal handling up to ±20V, low charge injection (<10pC), TTL/CMOS-compatible control inputs, and -40°C to +85°C industrial temperature operation in 16-pin narrow SO package.

Technical Context

The MAX308ESE+T implements a CMOS decode logic architecture with three address lines (A0–A2) and an active-low enable (EN) to select one of eight bidirectional analog channels (NO1–NO8) to the common port (COM). Its silicon-gate process ensures electrostatic discharge protection >2000V and guarantees low charge injection across all switching events.

It supports both unipolar and bipolar analog signal ranges: ±10V typical with ±15V supplies, and 0V to +10V with +12V single supply. Switching performance includes transition time <250ns, enable turn-on time <600ns, and break-before-make interval <450ns - all specified over full temperature range.

Key Specifications

Pinout & Package

MAX308ESE+T is housed in a 16-pin narrow SO (Small Outline) package with standard 150-mil body width and 0.050" lead pitch. Pin 1 is A1 (MSB address), pin 2 is GND, pin 3 is V+, pins 4–7 are NO1–NO4, pin 8 is COM, pins 9–12 are NO8–NO5, pin 13 is V−, pin 14 is EN, pin 15 is A0, and pin 16 is A2 (LSB address).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX308CSE+, the MAX308ESE+T adds extended temperature qualification (-40°C to +85°C) without trade-offs in on-resistance, matching, or leakage. Against ADG408BRZ, it delivers tighter parameter guarantees critical for metrology-grade signal routing, though at higher unit cost and narrower vendor availability.

Availability

MAX308ESE+T is available at Aetrix Electronics and suitable for automatic test equipment, military radio subsystems, and precision sample-and-hold circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX308ESE+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, medical, and communications applications.

The MAX308ESE+T belongs to Maxim's high-performance analog multiplexer product line, engineered for applications demanding guaranteed on-resistance matching, ultra-low leakage, and robust operation across harsh environmental conditions.

FAQ

What is the maximum analog signal range supported by the MAX308ESE+T?

The MAX308ESE+T supports analog signals from V− to V+ - up to ±20V with dual supplies or 0V to +30V with single supply. At ±15V supplies, the guaranteed operating range is ±10V with flat on-resistance; reduction in supply voltage proportionally narrows the usable signal swing while preserving functionality.

Does the MAX308ESE+T require external pull-up resistors on its address or enable pins?

No, the MAX308ESE+T does not require external pull-up resistors. Its CMOS logic inputs have low input current (±1µA max) and are TTL/CMOS-compatible, accepting VAH ≥ 2.4V and VAL ≤ 0.8V directly from microcontrollers or FPGA I/O without additional biasing components.

Can the MAX308ESE+T operate with unbalanced supplies such as +24V and -5V?

Yes, the MAX308ESE+T supports unbalanced supplies - for example, +24V and -5V - as long as the total voltage difference (V+ − V−) does not exceed +44V and both supplies remain within their absolute maximum ratings. This flexibility enables use in legacy systems with non-symmetric rail architectures.

How does the enable pin (EN) function in the MAX308ESE+T?

The EN pin on the MAX308ESE+T is active-low: when pulled high (≥2.4V), all internal switches open and the device enters low-power state with COM and NO terminals isolated. When pulled low (≤0.8V), the selected channel (per A0–A2) connects NOx to COM. EN overrides address inputs and provides fast, synchronous channel disabling.

Is the MAX308ESE+T pin-compatible with the industry-standard DG408 multiplexer?

Yes, the MAX308ESE+T is a direct pin-compatible and function-compatible plug-in upgrade for the DG408. It shares identical pinout, logic behavior, supply requirements, and package dimensions - enabling drop-in replacement without PCB modification while delivering improved on-resistance matching, lower leakage, and enhanced ESD protection.