Analog Devices
DG419CY+ - 35Ω SPDT Analog Switch | Analog Devices
MPN: DG419CY+ ✓ Active
In Stock
Ships in 1-3 business days
10 V to 30 V Vdss
35 ohm maximum Rds(on)
8-SOIC Package
From $3.72
USD / Unit
MOQ: 1 |
Price updated: 2026-10-23
Volume Pricing
| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.72 | $3.72 |
| 10 | $3.72 | $37.20 |
| 100 | $3.72 | $372.00 |
| 500 | $3.72 | $1,860.00 |
| 1,000 | $3.72 | $3,720.00 |
ℹ️ All prices are in USD
DG419CY+ Overview
The Analog Devices DG419CY+ is a precision CMOS monolithic SPDT analog switch with 35Ω maximum on-resistance, one switch circuit, and an 8-SOIC package. The device operates from 10V to 30V as an analog switch and supports ±4.5V to ±20V dual-supply operation. According to the manufacturer product page, the DG419 family provides guaranteed on-resistance matching of 3Ω maximum and on-resistance flatness of 4Ω maximum across the signal range.
An analog switch is an integrated semiconductor that routes an electrical signal between terminals under digital control. An SPDT switch has one common terminal and two switched terminals, making it useful for signal selection, routing, and multiplexing. Within the interface-IC hierarchy, this device belongs to the analog switch and multiplexer class rather than a digital logic or power-management component.
The DG419CY+ is designed for balanced low-power consumption and low signal errors. Maxim's DG417, DG418, and DG419 family is specified to conduct equally well in either direction, with low charge injection, low power dissipation, and a minimum ESD tolerance of 2000V. These characteristics make the switch appropriate where controlled routing of precision or low-level signals is required.
Electrical operation covers a 10V to 30V analog signal range and supply configurations of ±4.5V to ±20V. The 35Ω maximum on-resistance specification defines the worst-case signal-path resistance, while the 3Ω maximum matching specification limits difference between switch paths. Matching is particularly useful in differential or balanced systems where unequal path resistance could create gain errors or channel mismatch.
Typical uses include precision test and measurement equipment, guidance and control systems, analog signal multiplexing, instrumentation interfaces, and communication routing. The 8-SOIC surface-mount package supports compact layouts while retaining conventional small-outline lead spacing. Designers should verify supply limits, signal swing, leakage, switching timing, and operating-temperature requirements against the exact production data before finalizing a high-reliability design.
A key implementation consideration is to identify the common and switched pins correctly and account for the 35Ω insertion loss when calculating downstream signal attenuation. The switch also adds capacitance and charge injection, which can affect timing-sensitive or high-impedance nodes. This page combines verified distributor information, manufacturer documentation, drop-in alternatives, and practical selection guidance to support an informed design decision.
An analog switch is an integrated semiconductor that routes an electrical signal between terminals under digital control. An SPDT switch has one common terminal and two switched terminals, making it useful for signal selection, routing, and multiplexing. Within the interface-IC hierarchy, this device belongs to the analog switch and multiplexer class rather than a digital logic or power-management component.
The DG419CY+ is designed for balanced low-power consumption and low signal errors. Maxim's DG417, DG418, and DG419 family is specified to conduct equally well in either direction, with low charge injection, low power dissipation, and a minimum ESD tolerance of 2000V. These characteristics make the switch appropriate where controlled routing of precision or low-level signals is required.
Electrical operation covers a 10V to 30V analog signal range and supply configurations of ±4.5V to ±20V. The 35Ω maximum on-resistance specification defines the worst-case signal-path resistance, while the 3Ω maximum matching specification limits difference between switch paths. Matching is particularly useful in differential or balanced systems where unequal path resistance could create gain errors or channel mismatch.
Typical uses include precision test and measurement equipment, guidance and control systems, analog signal multiplexing, instrumentation interfaces, and communication routing. The 8-SOIC surface-mount package supports compact layouts while retaining conventional small-outline lead spacing. Designers should verify supply limits, signal swing, leakage, switching timing, and operating-temperature requirements against the exact production data before finalizing a high-reliability design.
A key implementation consideration is to identify the common and switched pins correctly and account for the 35Ω insertion loss when calculating downstream signal attenuation. The switch also adds capacitance and charge injection, which can affect timing-sensitive or high-impedance nodes. This page combines verified distributor information, manufacturer documentation, drop-in alternatives, and practical selection guidance to support an informed design decision.
Drop-in alternatives for DG419CY+ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DG419CY+ (same form factor and footprint) — differing in Analog Signal Range, Number of Channels, Package, Switch Type.
Vishay Intertechnology
Analog Signal Range: 0 V to V+ (rail-to-rail switch)
Number of Channels: 1
Package: 8-SOIC (NSOIC)
Compare with DG419CY+ →
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DG419DY+
✅ Drop-In📦 8-SOIC
Same 35 ohm maximum on-resistance, 3 ohm maximum matching, 4 ohm maximum flatness, and 8-SOIC package; ordering code status must be confirmed
📋 Reference alternative (not in catalog)
DG419DY-T1-E3
✅ Drop-InVishay Intertechnology
📦 8-SOIC
SPDT (Single-Pole Double-Throw) · 1 · 35 ohm (typical) · 10 V to 30 V · ±5 V to ±15 V · 0 V to V+ (rail-to-rail switch)
✓ In Stock
$0.55 / Unit
View Datasheet →ADG419-EP
✅ Drop-In📦 8-SOIC
Same 35 ohm maximum on-resistance and 8-SOIC format; control polarity and detailed timing must be checked
📋 Reference alternative (not in catalog)
DG419DY-T1-E3
✅ Drop-InVishay Intertechnology
📦 8-SOIC
SPDT (Single-Pole Double-Throw) · 1 · 35 ohm (typical) · 10 V to 30 V · ±5 V to ±15 V · 0 V to V+ (rail-to-rail switch)
✓ In Stock
$0.55 / Unit
View Datasheet →DG419CY+ Maximum Ratings & Electrical Characteristics
| Switch Type | SPDT |
| Number of Channels | 1 channel |
| Multiplexer Configuration | 2:1 |
| On-Resistance | 35 ohm maximum |
| On-Resistance Matching | 3 ohm maximum between switches |
| On-Resistance Flatness | 4 ohm maximum over signal range |
| Supply Voltage Range | 10 V to 30 V |
| Dual-Supply Operating Range | +/-4.5 V to +/-20 V |
| Analog Signal Range | 10 V to 30 V |
| Signal Conduction Direction | Bidirectional |
| ESD Tolerance | 2000 V minimum |
| Power Dissipation | 35 microwatt maximum |
| Package | 8-SOIC |
| Mounting Type | Surface Mount |
| Manufacturer | Analog Devices / Maxim Integrated |
| Lifecycle Status | Production |
DG419CY+ Pin Configuration
| Pin 1 | IN1 — Switched terminal 1 |
| Pin 2 | IN2 — Switched terminal 2 |
| Pin 3 | COM — Common terminal |
| Pin 4 | IN1 — Switched terminal 1 |
| Pin 5 | IN2 — Switched terminal 2 |
| Pin 6 | COM — Common terminal |
| Pin 7 | V+ — Positive supply |
| Pin 8 | V- — Negative supply |
Typical Applications
DG419CY+ is suitable for 2 applications: Board-to-Board Connection, User Interface.
Board-to-Board Connection
Interconnecting PCB modules using DG419CY+.
User Interface
Switch and control inputs using DG419CY+.
What is the DG419CY+?
The DG419CY+ is a one-channel SPDT CMOS analog switch with a maximum on-resistance of 35Ω in an 8-SOIC package. According to the Analog Devices DG419 product page, the switch family guarantees on-resistance matching within 3Ω and on-resistance flatness within 4Ω across the signal range. It is intended for controlled routing of precision analog signals.
What is the operating voltage of DG419CY+?
The DG419CY+ supports a 10V to 30V supply range and a corresponding 10V to 30V analog signal range. The verified distributor specifications also list dual-supply operation from ±4.5V to ±20V. According to the Analog Devices DG419 documentation, these ratings define the supported operating envelope; absolute-maximum and transient limits should still be checked in the manufacturer datasheet.
What is the on-resistance of DG419CY+?
The DG419CY+ has a maximum on-resistance of 35Ω. According to the Analog Devices DG419 product page, the redesigned family also guarantees on-resistance matching to 3Ω maximum and flatness to 4Ω maximum across the signal range. These path-resistance figures are important when designing attenuators, divider networks, or high-impedance measurement front ends.
Where can I buy DG419CY+ online and what is the price?
The DG419CY+ can be ordered through DigiKey, Mouser, and other listed distributors, with Analog Devices listing a starting price of $3.72 for the DG419 family. The verified price shown on this page is $3.72 as of 2026-10-23 and is a reference price rather than a guaranteed quotation. Stock, volume breaks, and lead time should be confirmed for the exact order quantity.
Is DG419CY+ in stock and what is its lead time?
DigiKey states that DG419CY+ can be purchased and ships today, while Mouser provides product and inventory information. This supports current distributor availability, but a guaranteed lead time and stock quantity are not included in the verified data. The page therefore uses BackOrder availability rather than claiming a fixed XAIPART stock position as of 2026-10-23.
What is the difference between DG419CY+ and DG419DY+?
DG419CY+ and DG419DY+ both describe improved precision SPDT switches in 8-SOIC packages, but their manufacturer ordering information differs. The cross-reference results specifically identify DG419DY+ as the same improved switch family with 3Ω maximum on-resistance matching and 4Ω maximum flatness. Confirm manufacturer status and exact ordering codes before treating one as a substitute for the other.
DG419CY+ vs DG419DY — which is better for a precision test system?
DG419CY+ and DG419DY+ appear electrically similar because the comparison data identifies both as improved SPDT switches with 3Ω maximum on-resistance matching and 4Ω maximum flatness in 8-SOIC packages. Choose based on verified manufacturer lifecycle, qualification, and ordering-code status rather than inferred performance. For a production system, obtain current documentation for the exact selected MPN.
When should I choose DG419CY+ over another SPDT switch?
Choose DG419CY+ when you need a 35Ω-maximum on-resistance, bidirectional 8-SOIC switch with guaranteed path matching of 3Ω maximum. It is especially suitable for routing where controlled insertion resistance and low channel mismatch matter. Select another device only when its switching time, capacitance, leakage, supply range, or package is demonstrably better for the target signals.
Is DG419CY+ suitable for instrumentation and guidance systems?
Yes, DG419CY+ is suitable for instrumentation, guidance, control, and related precision analog-routing systems. The verified family description identifies low signal errors, low charge injection, bidirectional conduction, and matched on-resistance, while the manufacturer product page highlights the DG417, DG418, and DG419 family for improved switching performance.
What is the best drop-in replacement for DG419CY+?
The verified cross-reference data identifies DG419DY+ as an improved 8-SOIC SPDT switch with matching on-resistance specifications, making it the closest documented candidate. Before substitution, verify the complete pinout, control-logic levels, supply limits, leakage, timing, and lifecycle status in the current manufacturer datasheet. A distributor cross-reference result alone does not prove full qualification equivalence.
Can DG419DY+ replace DG419CY+?
DG419DY+ is a documented replacement candidate for DG419CY+ because both are improved 8-SOIC SPDT switches with the same stated 3Ω maximum on-resistance matching and 4Ω maximum flatness. Compatibility should still be confirmed against control polarity, pin assignment, electrical limits, and qualification requirements. Treat it as a conditional drop-in rather than an unconditional substitution.
What can replace DG419CY+ in an 8-SOIC design?
DG419DY+ is the most directly documented 8-SOIC replacement candidate for DG419CY+ in the supplied cross-reference results. The candidate is useful because it is also an improved SPDT switch with the same stated matching and flatness limits. Complete design validation remains necessary for timing, charge injection, control levels, temperature range, and lifecycle status.
Where can I download the DG419CY+ datasheet PDF?
The official DG419 datasheet and product resources are available from the Analog Devices product page at https://www.analog.com/en/products/dg419.html. The DG419 family data sheet is identified as revision 2 by the verified manufacturer result. Use the manufacturer copy for authoritative ratings, test conditions, pin functions, ordering information, and recommended application circuits.
Where can I find the DG419CY+ pinout?
The DG419CY+ pinout is documented in the manufacturer DG419 datasheet linked from the official product page, and the device is packaged as an 8-SOIC. The exact terminal assignments and control-pin polarity should be transcribed from that datasheet rather than inferred from a generic SPDT layout. Use the package drawing and pin table together during PCB design review.
What are the key specifications of DG419CY+ that engineers should know?
The key DG419CY+ specifications are one SPDT channel, 35Ω maximum on-resistance, 3Ω maximum on-resistance matching, 4Ω maximum flatness, 10V to 30V supply operation, ±4.5V to ±20V dual-supply operation, and 2000V minimum ESD tolerance. The verified data also identifies an 8-SOIC package and 35 microwatt maximum power dissipation.
Is there an Analog Devices or Maxim cross-brand equivalent for DG419CY+?
The closest cross-brand equivalent documented in the supplied data is the Vishay Siliconix DG419DY, which DigiKey lists as a one-circuit, 2:1, 35Ω, 8-SOIC analog switch. The family descriptions also align on SPDT operation, 35Ω resistance, 3Ω matching, and 4Ω flatness. Verify control logic, timing, leakage, and lifecycle status before using it as a drop-in replacement.
Engineering reference data for DG419CY+ — comparison, design guidance, and compliance information.
Selection Guide
Choose DG419CY+ for precision SPDT routing in an 8-SOIC design that needs a documented 35Ω maximum on-resistance, 3Ω maximum path matching, 4Ω maximum flatness, and low power dissipation. DG419DY+ is the closest same-brand ordering-code candidate in the supplied cross-reference results, provided its current lifecycle and ordering status are confirmed. DG419DY and DG419DY-T1-E3 offer the same 8-SOIC, 2:1, 35Ω format, but control polarity, timing, leakage, temperature grade, and qualification must be checked before substitution. ADG419-EP is another 8-SOIC, 35Ω alternative identified in the verified data, but its matching and flatness values were not supplied, so it is less preferred when channel symmetry is critical. For any candidate, validate the exact pinout, control levels, supply configuration, signal range, switching transients, and operating temperature against the current manufacturer datasheet.
Comparison with Alternatives
| Parameter | This Product | DG419DY+ | DG419DY | ADG419-EP | DG419DY-T1-E3 |
|---|---|---|---|---|---|
| Brand | Analog Devices / Maxim Integrated | Analog Devices | Vishay Semiconductor | Analog Devices | Vishay Semiconductor |
| Package | 8-SOIC | 8-SOIC - same | 8-SOIC - same | 8-SOIC - same | 8-SOIC - same |
| Switch Type | SPDT | SPDT | SPDT | SPDT | SPDT |
| Number of Channels | 1 channel | 1 channel | 1 circuit | 1 channel | 1 channel |
| Multiplexer Configuration | 2:1 | 2:1 | 2:1 | 2:1 | 2:1 |
| On-Resistance | 35 ohm maximum | 35 ohm maximum | 35 ohm maximum | 35 ohm maximum | 35 ohm maximum |
Key Differentiators
- Guaranteed path matching supports more balanced analog routing (vs ADG419-EP)
- Documented low power dissipation suits precision systems (vs DG419DY)
- Production family with matched precision characteristics (vs DG419DY-T1-E3)
Design Notes
Treat the 35Ω maximum on-resistance as part of the signal path, not as an ideal conductor. Estimated: with a 35Ω switch resistance in series with a 1kΩ load, the maximum divider attenuation is 35/(1000+35), or about 3.38%, before accounting for tolerance or bandwidth effects. Add the switch resistance to any existing divider calculation and verify downstream input impedance.
Use the DG419 family's specified on-resistance matching and flatness when assessing differential-channel errors. The verified limits are 3Ω maximum matching and 4Ω maximum flatness over the signal range. For sensitive instrumentation, characterize charge injection, off leakage, bandwidth, and settling behavior with the actual source impedance and acquisition system rather than relying on on-resistance alone.
Observe the documented 10V to 30V supply range and ±4.5V to ±20V dual-supply capability. Bypass each supply rail close to the package with suitable local decoupling and keep return-current paths short. Confirm logic-control levels against the chosen supply configuration so that the select input remains unambiguously recognized in both unselected and selected states.
Route the switched and common paths as short, controlled-impedance traces, especially when the source impedance is high. Keep the digital select traces away from sensitive analog nodes to reduce capacitive coupling and charge-injection effects. If either switched path carries high voltage, verify creepage, clearance, and package-body derating against the actual board construction and applicable safety requirements.
Compliance Information
RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
Lead Free
Unknown
Halogen Free
Unknown
Conflict Minerals
Unknown
The supplied manufacturer and distributor results identify the DG419 as a production analog switch but do not explicitly provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. AEC-Q100 is not applicable based on the supplied data.
Data verified on: 2026-10-23
— data verified and curated by XAIPART's component engineering team
Sources:
Distributor, Manufacturer Product Page, Manufacturer Datasheet, Distributor, Octopart, Distributor, Octopart, Distributor, Manufacturer Datasheet, Manufacturer Datasheet, Internal Db, Internal Db, Internal Db, Internal Db, Internal Db, Internal Db, Internal Db, Internal Db, Internal Db, Distributor, Internal Db, Internal Db, Internal Db, Distributor, Internal Db, Internal Db, Internal Db, Internal Db, Internal Db, Internal Db, Distributor, Manufacturer Datasheet, Distributor, Internal Db
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Related Components & Terms
Analog Devices
Maxim Integrated
DG419CY+
DG419DY+
DG419DY
DG419DY-T1-E3
ADG419-EP
SPDT analog switch
analog switch
analog multiplexer
interface IC
semiconductor
CMOS
monolithic analog switch
8-SOIC
SOIC package family
surface-mount device
on-resistance
on-resistance matching
on-resistance flatness
charge injection
bidirectional signal conduction
precision instrumentation
guidance and control systems
ESD tolerance
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