Vishay Siliconix DG418DY-E3

Overview

DG418DY-E3 from Vishay Siliconix is a precision SPST normally-open (NO) CMOS analog switch optimized for bidirectional signal routing in low-power, high-accuracy systems. It delivers 20 Ω on-resistance, 100 ns turn-on time, ±15 V analog signal range, and ultra-low 35 nW power dissipation - enabling use in battery-powered instrumentation and military radios where leakage, distortion, and board space are critical.

For engineers reviewing the DG418DY-E3 datasheet, DG418DY-E3 pinout, DG418DY-E3 application, or DG418DY-E3 equivalent, key selection criteria include its dual-supply operation (±15 V), break-before-make logic compatibility with DG417/DG419 family members, SOIC-8 package footprint, and guaranteed sub-0.25 nA off-leakage at full temperature range.

Technical Context

The DG418DY-E3 implements a single-pole single-throw (SPST) NO switch using Vishay's high-voltage silicon gate (HVSG) process, enabling 44 V absolute maximum supply rating and latchup immunity via epitaxial isolation. Its control logic is inverted relative to DG417: logic low (≤0.8 V) enables conduction, while logic high (≥2.4 V) disables the channel.

It operates with bipolar supplies (±15 V) or unipolar supplies (up to 12 V), supports TTL/CMOS-compatible inputs, and maintains symmetric on-resistance and charge injection (60 pC) regardless of signal direction - critical for precision sample-and-hold and programmable gain amplifier topologies.

Key Specifications

Pinout & Package

Package: 8-pin narrow SOIC (JEDEC MS-012), 3.9 mm × 4.9 mm footprint, 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4617EPA+ and ADG1419BRMZ, DG418DY-E3 offers the optimal balance of speed, leakage, and power for SPST NO routing in portable precision systems - delivering faster switching than MAX4617EPA+ and lower cost than ADG1419BRMZ without sacrificing SOIC-8 compatibility.

Availability

DG418DY-E3 is available at Aetrix Electronics and suitable for precision test equipment, battery-powered instrumentation, and military radio subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DG418DY-E3 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 leader in discrete semiconductors and passive components, specializing in high-reliability analog switches, MOSFETs, and power management devices for demanding industrial and defense applications.

The DG418DY-E3 belongs to Vishay's precision CMOS analog switch product line, engineered specifically for low-leakage, low-distortion signal routing in portable, battery-operated, and high-accuracy measurement systems.

FAQ

What is the logic polarity of DG418DY-E3?

The DG418DY-E3 uses inverted logic control: a logic low (≤0.8 V) on the IN pin enables the switch (S-to-D path closed), while a logic high (≥2.4 V) disables it. This is complementary to DG417DY-E3, allowing direct pairing in complementary switching architectures without external inverters. The VL pin must be supplied with +5 V for proper TTL/CMOS threshold referencing.

Can DG418DY-E3 operate from a single 12 V supply?

Yes, DG418DY-E3 supports unipolar operation with V+ = 12 V and V− = GND. In this configuration, the analog signal range is 0 V to 12 V, R_DS(on) increases to 40 Ω, and turn-on time is 110 ns. The device retains all core specifications including <0.25 nA off-leakage and 60 pC charge injection, making it viable for industrial PLC I/O modules and automotive body control units.

Is DG418DY-E3 RoHS-compliant?

Yes, DG418DY-E3 is RoHS-compliant and lead-free, as confirmed by Vishay's official documentation (Document Number: 70051, Rev. G). The "-E3" suffix denotes lead-free, halogen-free, and RoHS-compliant packaging per EU Directive 2011/65/EU. No exemptions apply, and the part meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1).

What is the maximum allowable analog signal voltage for DG418DY-E3?

The DG418DY-E3 guarantees safe operation with analog signals ranging from V− to V+, up to ±15 V in dual-supply mode or 0 V to 12 V in single-supply mode. Signals exceeding these rails are clamped by internal diodes; forward current must be limited to ≤30 mA per terminal to prevent damage. Absolute maximum ratings allow V+ up to +44 V and V− down to −44 V, but analog signal swing remains constrained by supply rails.

How does DG418DY-E3 handle charge injection in sample-and-hold circuits?

DG418DY-E3 specifies 60 pC typical charge injection, measured with CL = 10 nF, V_gen = 0 V, and R_gen = 0 Ω. In sample-and-hold applications, this injects ≤6 μV error into a 10 nF hold capacitor - acceptable for 16-bit accuracy. Layout best practices include guarding the hold node and minimizing stray capacitance at the S/D pins to preserve settling behavior.