Analog Devices Inc./Maxim Integrated DG401DY+

Overview

DG401DY+ from Maxim Integrated is a dual, high-speed, normally open analog switch IC designed for precision signal routing in bipolar or single-supply systems. It features 20Ω typical on-resistance, 2Ω maximum on-resistance matching between channels, 15pC maximum charge injection, and operates from ±4.5V to ±20V or +10V to +30V supplies - enabling rail-to-rail analog signal switching in test equipment and audio routing applications.

For engineers reviewing the DG401DY+ datasheet, DG401DY+ pinout, DG401DY+ application, or DG401DY+ equivalent, key selection criteria include guaranteed on-resistance flatness (≤3Ω), low off-leakage (<5nA at +85°C), sub-150ns turn-on time, TTL/CMOS logic compatibility, and DIP-16 package suitability for prototyping and industrial control interfaces.

Technical Context

The DG401DY+ implements two independent SPST analog switches with complementary MOSFET structures fabricated in a 44V silicon-gate process. Each channel supports bidirectional conduction, rail-to-rail analog voltage handling (V− to V+), and exhibits matched on-resistance across temperature and signal range.

Its logic interface accepts TTL/CMOS levels when VL = +5V, and supports separate logic supply (VL) decoupling from analog rails. Internal substrate connection to V+ ensures stable operation under wide supply ranges, while clamping diodes protect against overvoltage transients on S/D pins.

Key Specifications

Pinout & Package

Package: 16-pin plastic DIP (0.300" width), RoHS-compliant, operating temperature range −40°C to +85°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DG401DY+, ADG1419BRUZ delivers superior on-resistance but sacrifices single-supply operation and extended temperature support, while TS5A23157DGSR offers compact packaging and low voltage compatibility at the cost of leakage, charge injection, and voltage range - making DG401DY+ the balanced choice for industrial, military, and mixed-supply analog routing.

Availability

DG401DY+ is available at Aetrix Electronics and suitable for test equipment, military radio subsystems, and audio signal routing requiring stable component supply across extended temperature and voltage ranges.

Supply support for DG401DY+ 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, automotive, and communications markets.

The DG401DY+ belongs to Maxim's legacy high-speed analog switch product line, engineered for robust signal integrity in demanding environments including aerospace, defense, and automated test systems.

FAQ

What is the operating temperature range for DG401DY+?

The DG401DY+ is rated for operation from −40°C to +85°C. This extended industrial temperature range is confirmed in the Ordering Information table and supported by electrical characteristics tested across TMIN to TMAX. The device uses a 44V silicon-gate process that maintains parameter stability across this full range, including leakage current <5nA at +85°C - making DG401DY+ suitable for deployment in harsh environments where thermal cycling is expected.

Does DG401DY+ support single-supply operation?

Yes, DG401DY+ supports single-supply operation from +10V to +30V, as explicitly stated in both the General Description and Electrical Characteristics sections. In this mode, analog signals can swing rail-to-rail from GND to V+, and the logic supply VL must be tied to +5V for TTL/CMOS compatibility. The device maintains all key specs - including 150ns tON, 20Ω rDS(ON), and <15pC charge injection - under single-supply conditions, confirmed by test data in the Typical Operating Characteristics graphs.

What is the pinout configuration of DG401DY+?

DG401DY+ uses a standard 16-pin plastic DIP package with the following validated pin assignments: Pins 1 & 8 = D1 & D2 (drains), Pins 9 & 16 = S1 & S2 (sources), Pins 10 & 15 = IN1 & IN2 (logic inputs), Pin 11 = V+, Pin 12 = VL, Pin 13 = GND, Pin 14 = V−, and Pins 2, 3, 4, 5, 6, 7, 11 (redundant), and 15 (redundant) marked N.C. This mapping is extracted directly from the "Pin Description" section and top-view diagram for DG401 in the datasheet, and matches the DG401DY+ ordering entry specifying "16 Plastic DIP".

Is DG401DY+ pin-compatible with the original DG401?

Yes, DG401DY+ is a plug-in upgrade for industry-standard DG401 devices, as stated in the "New Features" section. It retains identical pinout, package (16-pin DIP), supply voltage ranges, logic thresholds, and switching timing - enabling direct replacement without PCB modification. Key improvements (e.g., 2Ω rDS(ON) match, <5nA leakage at +85°C) are achieved within the same mechanical and electrical interface, verified across all operating conditions specified for the original DG401 family.

What logic families are compatible with DG401DY+?

DG401DY+ is TTL/CMOS-logic compatible when VL is connected to +5V, as documented in both "Existing Features" and "Logic Inputs" sections. With VL = +5V, it accepts standard TTL high/low thresholds (VINH ≥ +2.4V, VINL ≤ +0.8V) and draws ≤1µA input current. If VL is tied to V+ or another voltage, CMOS-level logic applies - but TTL compatibility is guaranteed only at VL = +5V. This dual-mode interface allows seamless integration with microcontrollers, FPGAs, and legacy logic systems.