Analog Devices Inc./Maxim Integrated DG211DY+

Overview

DG211DY+ from Maxim Integrated is a quad SPST normally closed analog switch IC designed for bidirectional signal routing in ±4.5V to ±18V dual-supply systems. It features guaranteed break-before-make switching, 175Ω typical R_DS(ON), 1000ns max turn-on time, and operates across –40°C to +85°C. Used in test equipment and military radios where supply disconnection with live signals must not cause latch-up.

For engineers reviewing the DG211DY+ datasheet, DG211DY+ pinout, DG211DY+ application, or DG211DY+ equivalent, key selection criteria include analog signal range (±15V), OFF-isolation (70dB), crosstalk suppression (90dB), low power consumption (0.4mA total supply current), and absence of VL supply requirement - critical for portable and ruggedized designs.

Technical Context

The DG211DY+ implements four independent CMOS SPST switches with integrated level-shifting logic inputs compatible with TTL/CMOS voltage thresholds. Its monolithic design eliminates external biasing and guarantees nonlatching behavior when V+ or V– is disconnected while analog signals remain present at S/D terminals.

Switching performance is characterized under ±15V supplies: turn-on time ≤1000ns and turn-off time ≤500ns, with channel capacitance (C_D+S(ON)) at 16pF and OFF-capacitance (C_S(OFF)/C_D(OFF)) at 5pF each - enabling high-frequency signal integrity up to 100kHz with minimal feedthrough.

Key Specifications

Pinout & Package

Package: 16-pin SO (Small Outline) per JEDEC MS-012, body width 3.9mm, lead pitch 1.27mm, RoHS-compliant and Pb-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad SPST analog switch applications.

Compared with ADG211ANZ and MAX4617ESA+, the DG211DY+ delivers superior fault tolerance via VL-free operation and nonlatching behavior, tighter R_DS(ON) matching across channels, and guaranteed break-before-make - making it optimal for mission-critical analog routing where supply instability or thermal extremes exist.

Availability

DG211DY+ is available at Aetrix Electronics and suitable for test equipment, military radios, Winchester disk drives, and guidance and control systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DG211DY+ 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, communications, and defense applications.

The DG211DY+ belongs to Maxim's precision analog switch product line, engineered for robust signal routing in environments with unstable power, wide temperature swings, and stringent reliability requirements - particularly where legacy mechanical relays or earlier-generation switches failed.

FAQ

What is the maximum analog signal voltage supported by the DG211DY+?

The DG211DY+ supports an analog signal range of ±15V when operated with ±15V supplies. Its absolute maximum ratings allow V_S/V_D to extend from V− to V+, meaning the full usable range equals the difference between V+ and V− rails - up to 44V total. This makes DG211DY+ suitable for high-voltage instrumentation and industrial control interfaces where signal fidelity across wide dynamic ranges is essential.

Does the DG211DY+ require a third VL supply voltage?

No, the DG211DY+ does not require a third VL supply. Unlike earlier-generation analog switches such as the original DG211, Maxim's DG211DY+ integrates internal level-shifting circuitry that eliminates the need for VL. This simplifies power design, reduces component count, and improves system reliability - a key differentiator confirmed in Maxim's official datasheet revision 2 (May 2006).

What is the operating temperature range for the DG211DY+?

The DG211DY+ is rated for operation from –40°C to +85°C, corresponding to its "E" grade industrial temperature specification. This range is explicitly listed in the Ordering Information table for part number DG211DY, and is validated across all electrical parameters including R_DS(ON), leakage currents, and switching times - making DG211DY+ appropriate for automotive under-hood, avionics, and outdoor deployed systems.

How does the DG211DY+ prevent latch-up during power supply removal?

The DG211DY+ prevents latch-up through monolithic CMOS design with built-in protection diodes and current limiting. When V+ or V− is disconnected while analog signals remain present at S/D pins, internal structures ensure no parasitic SCR conduction path forms. Maxim guarantees this nonlatching behavior - a critical feature verified in the Absolute Maximum Ratings and Applications sections of the DG211DY+ datasheet.

What package type is used for the DG211DY+?

The DG211DY+ uses a 16-pin SO (Small Outline) package per JEDEC MS-012 outline, with 3.9mm body width and 1.27mm lead pitch. This package is explicitly assigned to part number DG211DY in the Ordering Information table and matches the pin configuration shown in the "TOP VIEW DIP/SO/TSSOP" diagram - confirming mechanical and thermal compatibility with standard SOIC footprints and reflow profiles.