Analog Devices Inc./Maxim Integrated DG508AEWE+

Overview

DG508AEWE+ from Maxim Integrated is a monolithic CMOS 8-channel single-ended analog multiplexer with ±4.5V to ±18V dual-supply operation, break-before-make switching, and guaranteed latchup immunity during power-off signal presence. It features 16-pin wide SOIC packaging, -40°C to +85°C operating temperature range, and supports precision signal routing in data-acquisition systems.

For engineers reviewing the DG508AEWE+ datasheet, DG508AEWE+ pinout, DG508AEWE+ application, or DG508AEWE+ equivalent, key selection criteria include on-resistance matching (≤6% channel variation), sub-1μs switching transition time, <1nA off-leakage at ±10V, and TTL/CMOS-compatible logic inputs with low input current.

Technical Context

The DG508AEWE+ 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 analog conduction and rail-to-rail signal handling within the supply rails.

Break-before-make timing is guaranteed at ≤0.2μs, preventing momentary shorting during channel transitions. The device operates with true dual supplies - no virtual ground or reference bias required - and maintains functional integrity across its full ±4.5V to ±18V range without external support circuitry.

Key Specifications

Pinout & Package

Package: 16-pin Wide SOIC (W16-2), RoHS-compliant, surface-mountable with standard reflow profile (260°C peak for lead-free).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DG508AEWE+, MAX338ESE+ offers better performance at low voltage but lacks high-voltage robustness, while ADG508AKRZ-REEL7 extends temperature capability at the expense of leakage and on-resistance specs - choice depends on supply architecture and environmental envelope.

Availability

DG508AEWE+ is available at Aetrix Electronics and suitable for control systems, data-acquisition systems, and aircraft heads-up displays requiring stable component supply and long-term industrial availability.

Supply support for DG508AEWE+ 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, communications, and aerospace applications.

The DG508AEWE+ belongs to Maxim's legacy analog multiplexer product line, engineered for high-reliability signal routing in harsh environments with guaranteed break-before-make timing and latchup immunity.

FAQ

What is the maximum supply voltage rating for DG508AEWE+?

The DG508AEWE+ has an absolute maximum V+ rating of +44V and V− rating of -2V relative to V−, but its specified continuous operating range is ±4.5V to ±18V. Operation outside ±18V voids guaranteed performance and risks permanent damage. The DG508AEWE+ must be biased within these rails to ensure correct analog signal handling and logic interface behavior.

Does DG508AEWE+ support bidirectional analog signal flow?

Yes, the DG508AEWE+ supports fully bidirectional analog signal flow between the common D pin and any selected Sx pin. Its CMOS transmission-gate architecture provides symmetrical on-resistance and leakage characteristics in both directions, making it suitable for use in multiplexer, demultiplexer, and analog crosspoint configurations without signal polarity constraints.

What is the function of the EN pin on DG508AEWE+?

The EN (enable) pin on DG508AEWE+ is an active-high digital control input that globally enables or disables all eight analog switches. When EN = low, all channels are open-circuited regardless of address inputs; when EN = high, channel selection proceeds normally via A0–A2. This allows synchronous system-level power gating and reduces standby current to <0.2mA per rail.

Is DG508AEWE+ pin-compatible with older DG508A variants?

Yes, DG508AEWE+ is pin-compatible with all 16-pin SOIC-packaged DG508A variants (e.g., DG508ACWE, DG508ADY), sharing identical pinout, footprint, and electrical interface. The "E" grade denotes -40°C to +85°C operation, and the "+" suffix confirms RoHS-compliant lead-free packaging - no PCB layout changes are needed for drop-in replacement.

How does DG508AEWE+ prevent latchup during power-down?

DG508AEWE+ uses latchup-proof CMOS process technology with guard rings and optimized well structures. Maxim guarantees no latchup occurs even when input signals remain present while V+ and V− supplies are removed - a critical feature for hot-swap and fail-safe systems. This behavior is verified across the full -40°C to +85°C range and is intrinsic to the DG508AEWE+ die design, not dependent on external protection components.