Analog Devices Inc./Maxim Integrated DG508AEWE+T

Overview

DG508AEWE+T from Maxim Integrated is a monolithic CMOS 8-channel single-ended analog multiplexer with break-before-make switching, ±4.5V to ±18V dual-supply operation, 500Ω typical on-resistance at ±15V, and −40°C to +85°C temperature range in 16-pin wide SO package. It routes analog signals in data-acquisition systems requiring rail-to-rail signal handling and low leakage.

For engineers reviewing the DG508AEWE+T datasheet, DG508AEWE+T pinout, DG508AEWE+T application, or DG508AEWE+T equivalent, key selection criteria include guaranteed break-before-make timing (0.2μs), sub-1nA off-leakage at ±10V, TTL/CMOS-compatible logic inputs, latchup-proof construction, and compatibility with legacy DG508A footprints.

Technical Context

The DG508AEWE+T implements a fully decoded 3-bit address (A0–A2) to select one of eight bidirectional analog channels (S1–S8) to a common drain (D), with independent enable (EN) control. Its CMOS architecture ensures symmetrical, bidirectional analog conduction and zero static power draw in standby mode.

All switches feature matched on-resistance (<6% channel-to-channel variation), 68dB off-isolation at 500kHz, and robust ±44V absolute maximum voltage rating on V+ referenced to V−. The device operates continuously across its full supply range without latchup-even with input signals present during power-down.

Key Specifications

Pinout & Package

Package: 16-pin wide SO (W16-2), RoHS-compliant, surface-mount, 7.5mm × 10.3mm body size, 1.27mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX338ESE+ and ADG508AKRZ-REEL7, DG508AEWE+T uniquely delivers guaranteed break-before-make timing, sub-1nA leakage at extended supply voltages, and drop-in compatibility with legacy DG508A layouts-making it optimal for industrial and aerospace signal routing where reliability and signal fidelity are non-negotiable.

Availability

DG508AEWE+T is available at Aetrix Electronics and suitable for industrial data acquisition, aircraft heads-up displays, and portable test equipment requiring stable component supply across extended temperature and voltage ranges.

Supply support for DG508AEWE+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, and communications applications.

The DG508AEWE+T belongs to Maxim's legacy analog multiplexer product line, engineered for high-reliability signal routing in harsh environments where rail-to-rail operation, latchup immunity, and guaranteed switching behavior are critical.

FAQ

What is the guaranteed break-before-make interval for DG508AEWE+T?

The DG508AEWE+T guarantees a minimum break-before-make interval of 0.2μs, measured under standard test conditions (Figure 3). This ensures no overlap between channel connections during address changes, preventing signal shorting in sensitive analog paths. The specification holds across the full −40°C to +85°C operating range and ±4.5V to ±18V supply conditions. DG508AEWE+T achieves this via internal timing control in its CMOS decode logic.

Does DG508AEWE+T support single-supply operation?

No, DG508AEWE+T requires dual symmetric supplies (e.g., ±5V, ±12V, or ±15V) and does not support true single-supply operation. Its analog signal range extends from V− to V+, so operation with V− = 0V is not specified and may result in degraded performance or damage. For single-supply 5V systems, Maxim recommends the MAX338 instead. DG508AEWE+T is designed explicitly for bipolar analog signal routing.

Is DG508AEWE+T pin-compatible with the original DG508A?

Yes, DG508AEWE+T is a plug-in upgrade for the industry-standard DG508A, sharing identical pinout, package (16-pin wide SO), truth table, and functional block diagram. No PCB redesign is needed. DG508AEWE+T improves upon the original with faster enable switching, lower leakage (0.005nA vs. 1nA), and enhanced latchup immunity-while maintaining full electrical and mechanical compatibility.

What is the maximum analog signal voltage DG508AEWE+T can handle?

DG508AEWE+T supports analog signals from V− to V+, with absolute maximum ratings of −2V to (V+ + 2V) on digital/analog pins. At ±15V supplies, the usable analog range is ±15V. Exceeding V+ or falling below V− risks forward-biasing internal clamping diodes; sustained current beyond 20mA may cause damage. DG508AEWE+T is rated for continuous operation with signals within the supply rails.

How does DG508AEWE+T achieve latchup immunity?

DG508AEWE+T uses a latchup-proof CMOS process with guard rings and optimized well structures that prevent parasitic SCR formation. Maxim guarantees no latchup occurs even when input signals remain present while power supplies are turned off-a critical feature for hot-swap or fault-tolerant systems. This behavior is verified per JEDEC JESD78 and confirmed across temperature and voltage extremes. DG508AEWE+T maintains functionality after such events without reset.