Analog Devices Inc./Maxim Integrated DG442DY+

Overview

DG442DY+ from Maxim Integrated is a quad, normally-open (NO), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in mixed-signal systems. It delivers 85Ω max on-resistance, 4Ω max on-resistance matching between channels, <5nA off-leakage at +85°C, 10pC max charge injection, and operates from ±4.5V to ±20V bipolar or +10V to +30V single supply - enabling rail-to-rail analog signal handling in test equipment and communication interfaces.

For engineers reviewing the DG442DY+ datasheet, DG442DY+ pinout, DG442DY+ application, or DG442DY+ equivalent, key selection criteria include guaranteed r_FLAT(ON) ≤9Ω over signal range, TTL/CMOS logic compatibility, ESD tolerance ≥2000V (Method 3015.7), and validated performance across -40°C to +85°C industrial temperature range.

Technical Context

The DG442DY+ implements four independent SPST switches with complementary control logic: logic high at INx turns ON the corresponding switch (Dx–Sx path). Its silicon-gate 44V process ensures robust operation under overvoltage transients and supports unbalanced supplies (e.g., +24V/–5V), provided V+ – V– ≤ 44V.

Switching is characterized by t_ON < 250ns and t_OFF < 170ns (±15V, RL = 1kΩ), while low charge injection (10pC max) and flat on-resistance (9Ω max variation across ±15.5V analog range) preserve signal integrity in sample-and-hold and audio routing applications.

Key Specifications

Pinout & Package

DG442DY+ is packaged in a 16-pin narrow SO (Small Outline) surface-mount package with gull-wing leads. The exposed pad (EP) is absent in this variant - only present in Thin QFN versions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DG442DY+, ADG442BRZ offers marginally lower on-resistance but higher charge injection, making it less suitable for precision sampling; TS5A4624DCKR provides superior low-voltage performance but cannot replace DG442DY+ in industrial bipolar-rail applications due to fundamental supply and voltage-range incompatibility.

Availability

DG442DY+ is available at Aetrix Electronics and suitable for test equipment, communication systems, and battery-operated systems requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for DG442DY+ 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 DG442DY+ belongs to Maxim's high-reliability analog switch product line, engineered specifically for signal integrity-critical roles in automated test, telecom infrastructure, and ruggedized portable instrumentation.

FAQ

What is the operating temperature range for DG442DY+?

The DG442DY+ is rated for industrial operation from −40°C to +85°C. This range is confirmed in the Ordering Information table and supported by electrical characteristics tested across TMIN to TMAX, including leakage current and switching time specifications. DG442DY+ uses the same die as DG442DJ but in a lead(Pb)-free narrow SO package.

Does DG442DY+ support single-supply operation?

Yes, DG442DY+ supports single-supply operation from +10V to +30V. In this configuration, V− must be connected to ground (0V), and the analog signal range becomes 0V to V+ − 0.5V. The device maintains rail-to-rail capability and all key specs - including 85Ω max r_DS(ON) and 10pC max charge injection - are validated under single-supply conditions.

Is DG442DY+ pin-compatible with the original DG442CY?

Yes, DG442DY+ is a direct lead(Pb)-free replacement for DG442CY, sharing identical 16-pin narrow SO footprint, pinout, and electrical behavior. The "+" suffix denotes RoHS-compliant packaging per Maxim's ordering convention; all timing, leakage, and resistance specs match DG442CY across −40°C to +85°C.

What is the maximum analog signal voltage DG442DY+ can handle?

DG442DY+ supports analog signals from V− − 0.3V to V+ + 0.3V, with guaranteed performance up to ±15.5V when operated at ±15V supplies. Absolute maximum ratings allow V+ to V− differential up to 44V, but analog swing is constrained by supply rails - e.g., at ±20V supplies, usable range is ±19.7V.

How does DG442DY+ handle power-supply sequencing?

DG442DY+ requires proper sequencing: V+ must be applied first, followed by V− and then logic inputs. Violating this order risks latch-up or damage. If sequencing cannot be guaranteed, external series diodes (as shown in Figure 1 of the datasheet) should be added to V+ and V− pins - reducing analog range by 1V but preserving switch functionality and leakage specs.