Renesas DG401DY-T

Overview

DG401DY-T from Intersil is a dual single-pole single-throw (SPST) monolithic CMOS analog switch with TTL/CMOS-compatible digital inputs, 45 Ω max ON resistance, <150 ns turn-on time, and ±15 V analog signal range. It operates from ±5 V to ±17 V supplies and is used in sample-and-hold circuits, data acquisition systems, and audio switching where low charge injection and bidirectional signal integrity are critical.

For engineers reviewing the DG401DY-T datasheet, DG401DY-T pinout, DG401DY-T application, or DG401DY-T equivalent, key selection considerations include its dual SPST topology, SOIC-16 package, guaranteed rDS(ON) ≤ 55 Ω over temperature, sub-100 ns tOFF, and compatibility with battery-operated and high-reliability systems requiring low leakage (<5 nA OFF-state) and minimal signal distortion.

Technical Context

The DG401DY-T implements two independent bilateral analog switches using a high-voltage silicon-gate CMOS process with epitaxial isolation to prevent latch-up. Each switch supports bidirectional AC/DC signals and maintains low rDS(ON) variation across ±15 V analog input range.

It features TTL/CMOS-compatible logic inputs (VIH ≥ 2.4 V, VIL ≤ 0.8 V), operates from single +5 V to +34 V or split ±5 V to ±17 V supplies, and delivers <35 μW quiescent power consumption. Charge injection is limited to 60 pC typical, enabling precision sample-and-hold performance without external correction.

Key Specifications

Pinout & Package

Package: 16-lead SOIC (M16.15), 7.5 mm × 10.3 mm body, 1.27 mm pitch, RoHS-compliant Pb-free plus anneal finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HI-5041 and ADG1412, DG401DY-T uniquely balances wide analog voltage range (±17 V), robust temperature-stable rDS(ON), and industry-standard SOIC-16 footprint - making it optimal for retrofitting legacy test equipment and industrial controllers where supply flexibility and reliability are prioritized over ultra-low resistance.

Availability

DG401DY-T is available at Aetrix Electronics and suitable for audio switching, data acquisition, and sample-and-hold applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for DG401DY-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

Intersil Corporation (now part of Renesas Electronics) is a U.S.-based semiconductor designer specializing in high-performance analog and power management ICs for industrial, aerospace, and communications markets.

The DG401DY-T belongs to Intersil's monolithic CMOS analog switch family, engineered for precision signal routing in high-reliability systems where low charge injection, latch-up immunity, and wide supply tolerance are mandatory design requirements.

FAQ

What is the maximum analog signal voltage supported by the DG401DY-T?

The DG401DY-T supports analog signals up to ±15 V, corresponding to a 30 VP-P range. This is enabled by its 44 V maximum V+ to V− rating and internal protection architecture. Operation beyond ±15 V risks exceeding absolute maximum ratings and may cause irreversible damage to the DG401DY-T. Always maintain analog inputs within the specified supply rails.

Does the DG401DY-T require a separate logic supply voltage?

Yes, the DG401DY-T requires VL = 5 V for its digital interface, independent of analog supply rails (V+, V−). This separation prevents digital switching noise from coupling into analog paths. The DG401DY-T will not function correctly if VL is omitted or mismatched - the logic inputs (IN1, IN2) are referenced to VL, not GND or V+.

Can the DG401DY-T be used with single-supply operation?

Yes, the DG401DY-T supports single-supply operation from +5 V to +34 V. In this mode, V− must be connected to GND, V+ to the positive rail, and analog signals referenced accordingly. The DG401DY-T maintains full rDS(ON) performance and switching speed under single-supply conditions, as verified in the datasheet's electrical specifications table.

What is the thermal resistance (θJA) of the DG401DY-T in its SOIC package?

The DG401DY-T in 16-lead SOIC (M16.15) has a typical junction-to-ambient thermal resistance (θJA) of 115°C/W when mounted on a high-thermal-conductivity test board in free air. This value assumes standard JEDEC PCB layout; actual θJA in end-equipment depends on copper area, airflow, and adjacent heat sources. Exceeding 150°C junction temperature will permanently damage the DG401DY-T.

Is the DG401DY-T pin-compatible with other devices in the DG401/DG403 family?

Yes, the DG401DY-T shares identical pinout with all DG401 variants (e.g., DG401DYZ, DG401DVZ) and maintains mechanical and electrical compatibility with the DG403 series for layout reuse. However, DG403 is dual SPDT - swapping DG401DY-T for DG403DY-T requires logic redesign due to differing truth tables and terminal assignments, even though physical mounting is identical.