Analog Devices Inc./Maxim Integrated DG417DY

Overview

DG417DY from Maxim Integrated is a precision CMOS single-pole/single-throw (SPST) analog switch with normally closed (NC) configuration, 35Ω maximum on-resistance, <5nA off-leakage at +85°C, and guaranteed 3Ω max on-resistance matching between channels. It operates from ±4.5V to ±20V bipolar or +10V to +30V single supply and is used in sample-and-hold circuits and audio signal routing where rail-to-rail signal integrity and low charge injection (10pC max) are critical.

For engineers reviewing the DG417DY datasheet, DG417DY pinout, DG417DY application, or DG417DY equivalent, key selection criteria include its -40°C to +85°C temperature rating, SO-8 package, guaranteed R_DS(ON) flatness (4Ω max), TTL/CMOS logic compatibility, and ESD tolerance of 2000V per Method 3015.7.

Technical Context

The DG417DY implements a silicon-gate CMOS process optimized for precision analog switching, with internal clamping diodes enabling robust overvoltage protection when V_S or V_D exceed supply rails. Its logic interface accepts TTL- or CMOS-level inputs via dedicated VL pin, decoupling logic threshold from analog supply rails.

It supports rail-to-rail analog signal handling across the full specified supply range, with guaranteed performance parameters-including t_ON < 175ns and t_OFF < 145ns-valid under both bipolar and single-supply operation. On-resistance matching and flatness are guaranteed only under bipolar-supply conditions.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (SO-8), surface-mount, -40°C to +85°C operating range.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DG417DY, ADG1419BRMZ offers lower on-resistance but lacks guaranteed matching and flatness, while TS5A23157DCUR provides dual SPSTs in one package but sacrifices high-temperature leakage performance and ESD robustness required in industrial test gear.

Availability

DG417DY is available at Aetrix Electronics and suitable for sample-and-hold circuits, audio signal routing, and test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DG417DY 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, communications, and computing applications.

The DG417DY belongs to Maxim's legacy high-precision analog switch family, engineered specifically for applications demanding guaranteed on-resistance matching, low charge injection, and robust bipolar supply operation in harsh environments.

FAQ

What is the operating temperature range of the DG417DY?

The DG417DY is rated for operation from -40°C to +85°C. This extended industrial temperature range is confirmed in the Ordering Information table and validated across all key electrical specifications including leakage current, on-resistance, and switching times. The DG417DY's <5nA off-leakage at +85°C makes it suitable for high-ambient applications such as automotive test fixtures and industrial controllers where thermal stability is critical. DG417DY performance remains fully specified across this entire range.

Does the DG417DY support single-supply operation?

Yes, the DG417DY supports single-supply operation from +10V to +30V, with V− connected to ground. In this mode, the analog signal range extends from 0V to V+, and all dynamic and static parameters-including t_ON, t_OFF, R_DS(ON), and charge injection-are characterized and guaranteed. The device retains rail-to-rail signal handling and TTL/CMOS logic compatibility via the VL pin, making DG417DY viable for portable instrumentation and battery-powered systems without dual supplies.

What does "normally closed" mean for the DG417DY?

"Normally closed" means that the analog path between pins 1 (S) and 8 (D) is conductive when the IN pin (pin 6) is at a logic LOW voltage (≤0.8V). When IN goes HIGH (≥2.4V), the switch opens. This fail-safe behavior ensures signal continuity during power loss or controller reset-critical in safety-critical sample-and-hold or audio mute applications. DG417DY's truth table and functional diagrams confirm this NC behavior, distinguishing it from the DG418DY (NO) and DG419DY (SPDT).

Is the DG417DY pin-compatible with older DG417 variants?

Yes, the DG417DY is pin-compatible with other DG417 variants in SO-8 (e.g., DG417CY, DG417C/D) and PDIP packages. All share identical pin numbering, function mapping, and footprint dimensions. The DG417DY's improvements-guaranteed R_DS(ON) match, flatter on-resistance, lower leakage-are implemented within the same physical and electrical interface, enabling drop-in replacement in existing designs without PCB changes. DG417DY maintains full backward compatibility while delivering enhanced parametric guarantees.

What is the maximum analog signal voltage the DG417DY can handle?

The DG417DY supports analog signals from V− to V+, with absolute maximum ratings of V+ ≤ 44V referenced to V− and GND ≤ 25V referenced to V−. Under recommended operating conditions, the analog signal range is ±15.5V with ±16.5V supplies, or 0V to +12V with +12V single supply. This rail-to-rail capability is guaranteed across temperature and supply variations, and the internal clamping diodes protect against transient overvoltage. DG417DY's analog range directly tracks its supply rails, enabling flexible system-level voltage scaling.