Vishay Siliconix DG441LDY

Overview

DG441LDY from Vishay Siliconix is a precision monolithic quad SPST low-voltage CMOS analog switch in 16-pin narrow SOIC package, operating on single supply (2.7–12 V) or dual supply (±3–±6 V), with 17 Ω typical R_DS(on), 20 ns t_ON, and 12 ns t_OFF, used for high-fidelity audio/video signal routing and precision data acquisition.

For engineers reviewing the DG441LDY datasheet, DG441LDY pinout, DG441LDY application, or DG441LDY equivalent, key selection criteria include guaranteed on-resistance flatness over signal range, sub-15 pC charge injection, break-before-make switching action, TTL/CMOS logic compatibility, and 2000 V ESD protection - all validated across –40 °C to +85 °C.

Technical Context

The DG441LDY implements four independent normally open (NO) analog switches using BiCMOS wafer fabrication, enabling simultaneous operation under single-supply (e.g., 3 V, 5 V, 12 V) or dual-supply (±3 V, ±5 V) conditions. Its control logic is active-high: INx = logic "1" (≥2.4 V) turns the corresponding Sx–Dx path ON.

Each channel features matched R_DS(on) (ΔR_DS(on) ≤ 0.5 Ω), low leakage (≤±10 nA at full temperature range), and minimal capacitive coupling (CD(on) = 15 pF, CS(off)/CD(off) ≤ 9 pF), supporting high-frequency signal integrity up to 280 MHz (–3 dB bandwidth) and off-isolation of –68 dB at 1 MHz in dual-supply mode.

Key Specifications

Pinout & Package

16-pin narrow-body SOIC (JEDEC MS-012), 7.5 mm × 10.3 mm footprint, 1.27 mm pitch, with exposed pad not present. Pin 1 marked by notch or dot.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4617ESE+ and ADG1412BRUZ, DG441LDY uniquely balances dual-supply flexibility, SOIC compatibility, sub-20 ns switching, and <10 nA leakage - making it optimal for space-constrained, mixed-signal industrial modules requiring both unipolar and bipolar analog routing.

Availability

DG441LDY is available at Aetrix Electronics and suitable for precision data acquisition, audio/video routing, and battery-powered instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DG441LDY 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

Vishay Siliconix is a global semiconductor manufacturer specializing in discrete MOSFETs, diodes, optoelectronics, and precision analog switches, with vertical integration from silicon design to packaging.

The DG441L family was engineered for high-fidelity analog signal switching in test equipment and communications infrastructure, emphasizing low distortion, fast settling, and robust ESD tolerance in compact packages.

FAQ

What supply voltage ranges does the DG441LDY support?

The DG441LDY supports single-supply operation from 2.7 V to 12 V and dual-supply operation from ±3 V to ±6 V. At V+ = 12 V and V− = 0 V, R_DS(on) is 17 Ω typical; at ±5 V, it is 20 Ω typical. The device maintains specified performance across its full operating temperature range of –40 °C to +85 °C, and all supply pins must be decoupled with 0.1 µF ceramic capacitors close to the package.

Is the DG441LDY pin-compatible with the industry-standard DG441?

Yes, the DG441LDY is a low-voltage pin-for-pin compatible companion to the industry-standard DG441, as confirmed in Vishay's datasheet revision E. It retains identical pin configuration (16-pin SOIC), logic mapping (INx active-high), and functional block diagram, while delivering improved R_DS(on), faster switching, and enhanced ESD protection - enabling drop-in replacement in legacy designs.

Does the DG441LDY require external pull-up or pull-down resistors on its digital inputs?

No, the DG441LDY does not require external biasing on IN1–IN4. Its TTL/CMOS-compatible inputs specify logic "0" ≤ 0.8 V and logic "1" ≥ 2.4 V, with input currents below ±1.5 µA across temperature. Direct connection to FPGA GPIOs, microcontroller outputs, or logic gates is sufficient; adding external resistors may degrade switching speed or increase power consumption unnecessarily.

Can the DG441LDY handle bipolar analog signals without external level-shifting?

Yes, the DG441LDY supports true bipolar analog signal routing when operated on dual supplies (e.g., V+ = +5 V, V− = –5 V), allowing analog voltages from –5 V to +5 V to pass through the S–D channels without clipping or distortion. Internal ESD diodes clamp signals exceeding V+ or V−, so analog inputs must remain within the supply rails to avoid forward conduction and potential damage.

What is the maximum signal frequency supported by the DG441LDY?

The DG441LDY delivers –3 dB bandwidth of 280 MHz under single-supply 3 V operation, as measured with RL = 50 Ω. Its channel-to-channel crosstalk remains –85 dB and off-isolation –68 dB at 1 MHz, confirming suitability for high-frequency analog routing. For best RF performance, maintain controlled-impedance traces, minimize stub lengths, and use ground planes - especially critical above 10 MHz.