Analog Devices Inc./Maxim Integrated MAX337CAI+T

Overview

MAX337CAI+T from Maxim Integrated is a dual 8-channel CMOS analog multiplexer designed to route one of eight differential input pairs (NO1A–NO8A/NO1B–NO8B) to two common bidirectional outputs (COMA/COMB) using a 3-bit binary address. It features 400Ω max on-resistance, <20pA NO-off leakage at +25°C, and 3.5pC typical charge injection. It operates from ±4.5V to ±20V dual supplies or +4.5V to +30V single supply and is used in precision data acquisition systems requiring low-leakage signal switching.

For engineers reviewing the MAX337CAI+T datasheet, MAX337CAI+T pinout, MAX337CAI+T application, or MAX337CAI+T equivalent, key selection criteria include guaranteed low off-leakage (<20pA), rail-to-rail bidirectional signal handling, TTL/CMOS-compatible control inputs, ESD protection >2000V, and pin compatibility with industry-standard DG507.

Technical Context

The MAX337CAI+T implements a dual independent 8:1 analog multiplexer architecture with separate A- and B-side channels, each controlled by shared A0–A2 address lines and a common EN enable input. Its BiCMOS process enables low on-resistance matching (≤10Ω) and ultra-low leakage across temperature.

It supports true bidirectional signal flow with rail-to-rail analog voltage range (±15V with ±15V supplies), break-before-make switching (10–50ns), and guaranteed charge injection ≤10pC - critical for high-resolution sampling systems where switch-induced transients must be minimized.

Key Specifications

Pinout & Package

MAX337CAI+T is housed in a 28-pin SSOP (Shrink Small Outline Package) with 0.65mm lead pitch, RoHS-compliant and lead-free (+T suffix). The package measures 10.2mm × 5.3mm × 1.95mm (L×W×H) and is optimized for automated SMT assembly and thermal performance in dense PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX337CWI+ and DG507ACJ, the MAX337CAI+T delivers superior leakage performance (<20pA vs. >100pA), smaller PCB footprint, and guaranteed >2000V ESD robustness - making it optimal for new designs targeting high-reliability, miniaturized, and regulatory-compliant applications.

Availability

MAX337CAI+T is available at Aetrix Electronics and suitable for precision data acquisition, test equipment, and medical instrumentation requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for MAX337CAI+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.

The MAX336/MAX337 product line was engineered specifically for low-leakage, low-charge-injection analog multiplexing in precision measurement systems - emphasizing rail-to-rail operation, TTL compatibility, and robust ESD tolerance without sacrificing speed or matching.

FAQ

What is the maximum operating temperature range for MAX337CAI+T?

The MAX337CAI+T is rated for operation from 0°C to +70°C ambient temperature. This commercial-grade temperature range is validated per the device's datasheet specifications and applies to all electrical parameters including on-resistance, leakage current, and switching times. Operation outside this range may result in parameter degradation or functional failure. For extended temperature applications, consider the MAX337EAI+ (−40°C to +85°C) variant.

Does MAX337CAI+T support single-supply operation?

Yes, MAX337CAI+T supports single-supply operation from +4.5V to +30V. In this configuration, V− must be connected to GND, and the analog signal range becomes 0V to V+. The device maintains full functionality - including TTL-compatible logic inputs, low leakage, and rail-to-rail signal handling - with no performance penalties beyond reduced analog swing versus dual-supply mode.

Is MAX337CAI+T pin-compatible with DG507?

Yes, MAX337CAI+T is explicitly specified as a plug-in upgrade for the industry-standard DG507. Pin assignments, signal functions, and package outline (28-pin SSOP) match identically. No PCB layout changes are required when replacing DG507 with MAX337CAI+T, though users should verify that the improved electrical specs (e.g., lower leakage, lower charge injection) align with system-level accuracy requirements.

What is the typical charge injection value for MAX337CAI+T, and why does it matter?

The typical charge injection for MAX337CAI+T is 3.5pC, with a maximum of 10pC. This parameter quantifies the net charge transferred to the output node during channel switching, which causes voltage glitches on downstream capacitive loads (e.g., ADC sample-and-hold capacitors). At 3.5pC, MAX337CAI+T enables clean sampling in 16-bit+ systems without requiring additional settling time or correction algorithms.

Can MAX337CAI+T handle bipolar analog signals?

Yes, MAX337CAI+T fully supports bipolar analog signals when operated from dual supplies (e.g., ±15V). Its rail-to-rail architecture allows input/output voltages spanning from V− to V+, meaning it can pass ±10V, ±5V, or other symmetrical signals without clipping or distortion. This capability is essential for applications like audio routing, industrial control feedback loops, and sensor signal conditioning with AC-coupled sources.