Analog Devices Inc./Maxim Integrated MAX338CSE

Overview

MAX338CSE from Maxim Integrated is an 8-channel CMOS analog multiplexer designed to route one of eight bidirectional analog inputs to a common COM terminal under 3-bit binary address control (A0–A2), with TTL/CMOS-compatible enable (EN). It features 400Ω max on-resistance, <20pA NO-off leakage at +25°C, and 1.5pC typical charge injection-enabling precision data-acquisition and sample-and-hold circuits in industrial test equipment and military radios.

For engineers reviewing the MAX338CSE datasheet, MAX338CSE pinout, MAX338CSE application, or MAX338CSE equivalent, this page delivers verified electrical specs, package-validated pin functions, real-world use-value per application, and two confirmed alternative parts with documented technical and application differences-supporting rapid selection for low-leakage, rail-to-rail analog switching under ±4.5V to ±20V or +4.5V to +30V supplies.

Technical Context

The MAX338CSE implements a monolithic silicon-gate CMOS switch architecture with integrated decode logic, supporting both multiplexing and demultiplexing modes. Its bidirectional signal path handles rail-to-rail analog voltages up to ±20V (dual) or +30V (single), with guaranteed on-resistance matching (<10Ω) and break-before-make timing (140ns typ) to prevent channel crosstalk during switching.

All digital inputs (A0, A1, A2, EN) maintain TTL compatibility across full temperature range (0°C to +70°C) and supply conditions (±4.5V to ±18V), while ESD protection exceeds 2000V per Method 3015.7-critical for rugged deployment in guidance systems and PBX infrastructure where transient immunity and long-term leakage stability are mandatory.

Key Specifications

Pinout & Package

MAX338CSE is supplied in a 16-pin narrow SO (Small Outline) package, 150 mil width, with standard JEDEC MS-012AC footprint and gull-wing leads. Pin 1 marked by bevelled corner or dot; exposed pad not present (unlike QFN variants).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DG508A, MAX338CSE delivers tighter leakage control and robust ESD protection for modern test gear; versus MAX328, it trades some leakage performance for broader supply range and lower on-resistance-making it optimal for general-purpose, high-reliability analog switching where rail flexibility and moderate precision coexist.

Availability

MAX338CSE is available at Aetrix Electronics and suitable for data-acquisition systems, sample-and-hold circuits, and military radio designs requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX338CSE 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, and communications markets.

The MAX338CSE belongs to Maxim's low-leakage analog switch family, engineered specifically for high-fidelity signal routing in test equipment, avionics, and secure comms where long-term parameter stability and ESD resilience are non-negotiable.

FAQ

What is the maximum analog signal voltage range supported by the MAX338CSE?

The MAX338CSE supports analog signals from V− to V+ - up to ±20V with dual supplies or +30V with single supply (V− = GND). At ±15V supplies, the guaranteed signal range is ±10V; operation beyond these limits risks exceeding absolute maximum ratings and may cause latch-up or permanent damage. Always observe the specified voltage ranges in the Electrical Characteristics table.

Is the MAX338CSE pin-compatible with the DG508A?

Yes, the MAX338CSE is a pin-compatible upgrade for the DG508A in the 16-pin DIP and SO packages. All pin functions match exactly: V+, V−, GND, COM, NO1–NO8, A0–A2, and EN occupy identical positions. No PCB redesign is required, though layout review is recommended to verify grounding and decoupling for improved ESD performance.

Does the MAX338CSE support demultiplexing functionality?

Yes, the MAX338CSE operates bidirectionally and can function as either a multiplexer or demultiplexer. When a signal is applied to the COM terminal and the address lines select a specific NOx pin, that NOx becomes the output - enabling one-to-many signal distribution. This behavior is inherent to its CMOS transmission-gate topology and requires no external configuration.

What is the guaranteed on-resistance matching between channels for the MAX338CSE?

The MAX338CSE guarantees on-resistance matching of ≤10Ω between any two channels (ΔRON = RON_MAX − RON_MIN) over the full operating temperature range. This tight matching ensures consistent gain and minimal channel-to-channel error in applications like multi-sensor calibration or programmable gain stages where ratio-metric accuracy is critical.

Can the MAX338CSE operate from unbalanced supplies such as +24V and −5V?

Yes, the MAX338CSE supports unbalanced supplies - for example, +24V on V+ and −5V on V− - provided the total voltage difference (V+ − V−) does not exceed 44V and each supply remains within its absolute maximum rating (V+ ≤ 44V referenced to V−; GND ≤ 25V referenced to V−). This capability enables flexible power architecture in legacy or hybrid systems.