Analog Devices Inc./Maxim Integrated DG211DY+T

Overview

DG211DY+T from Maxim Integrated is a quad SPST normally closed analog switch IC designed for high-voltage bipolar signal routing in test equipment and communications systems. It operates over ±4.5V to ±18V supplies, delivers 175Ω max R_DS(ON) at ±15V, exhibits 1000ns max turn-on time, and requires no VL supply-enabling simplified power architecture in portable or space-constrained designs.

For engineers reviewing the DG211DY+T datasheet, DG211DY+T pinout, DG211DY+T application, or DG211DY+T equivalent, this page provides verified specifications, SO package terminal mapping, real-world use cases in military radios and PBX systems, and two validated alternative parts with documented functional and timing differences.

Technical Context

The DG211DY+T implements four independent CMOS SPST switches with break-before-make switching guaranteed across its full operating temperature range (–40°C to +85°C). Its logic inputs are compatible with both CMOS and TTL levels, and it features nonlatching behavior when power supplies are disconnected while analog signals remain present.

Unlike legacy DG211 variants requiring a third VL supply, the DG211DY+T eliminates that rail entirely-reducing BOM count and PCB complexity. Its analog signal range spans ±15V with 5pF typical OFF-capacitance per channel and 70dB minimum OFF-isolation at 100kHz.

Key Specifications

Pinout & Package

Package: 16-pin SO (Small Outline) - RoHS-compliant, surface-mount, 150-mil body width, JEDEC MS-012 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4617ESE+ and ADG1412BRUZ, the DG211DY+T uniquely balances wide supply range (±4.5V to ±18V), no-VL simplicity, and robustness in harsh environments-making it optimal for legacy-compatible, high-voltage, and thermally demanding applications where moderate speed suffices.

Availability

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

Supply support for DG211DY+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 markets.

The DG211DY+T belongs to Maxim's high-voltage analog switch product line, engineered specifically for reliable signal routing in ruggedized test, military, and telecom infrastructure where supply flexibility and latch-up immunity are mandatory.

FAQ

What is the operating temperature range for DG211DY+T?

The DG211DY+T is rated for –40°C to +85°C operation, matching the DG211D/E grade specification. This extended range supports deployment in industrial enclosures, vehicle-mounted radios, and outdoor test instrumentation where ambient temperatures exceed commercial limits. The SO package's thermal characteristics are validated across this full span per Maxim's datasheet Section "Ordering Information" and "Absolute Maximum Ratings." DG211DY+T maintains guaranteed R_DS(ON) and switching times within this range.

Does DG211DY+T require a VL supply voltage?

No, DG211DY+T does not require a VL supply. Unlike earlier DG211 versions from the original manufacturer, Maxim's DG211DY+T integrates internal level-shifting circuitry that eliminates the need for a third logic supply rail. This is explicitly confirmed in the "Features" section ("No VL Supply Required") and the "General Description," reducing system-level power design complexity. DG211DY+T operates using only V+, V−, and GND - all necessary for its ±4.5V to ±18V analog and logic functionality.

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

The DG211DY+T supports an analog signal range of ±15V, as specified in the "Electrical Characteristics" table under VANALOG. This is valid when powered from ±15V supplies. The device's absolute maximum ratings allow V+ to V− up to 44V, but the usable linear analog swing remains ±15V under standard operating conditions. Exceeding ±15V may cause increased R_DS(ON) or leakage, and is not guaranteed per datasheet performance curves. DG211DY+T's ±15V range directly supports legacy industrial and military signal standards.

How does DG211DY+T ensure safe operation when power is removed?

DG211DY+T guarantees nonlatching behavior even when V+ or V− is disconnected while analog input signals remain present - a key reliability feature documented in the "General Description." Internal protection structures prevent parasitic SCR activation, avoiding destructive latch-up. This allows safe "hot-swap" scenarios in modular test systems or field-replaceable radio units. DG211DY+T achieves this without external components, unlike older analog switches requiring discrete clamp diodes or supply supervisors.

What are the logic input voltage thresholds for DG211DY+T?

DG211DY+T logic inputs are compatible with both CMOS and TTL levels: a logic high is defined as ≥2.4V, and a logic low as ≤0.8V, per the "Electrical Characteristics" table (I_INH/I_INL test conditions). This dual compatibility enables direct interfacing with 3.3V and 5V microcontrollers, CPLDs, and legacy TTL logic without level translation. The DG211DY+T's input current remains below ±1µA across the full logic range, minimizing loading on driving sources.