DG405DY+ Equivalent & Substitute Parts

Part Overview

The DG405DY+ is a 2-circuit IC switch with DPST-NO configuration and 45Ohm on-state resistance, manufactured by Analog Devices Inc./Maxim Integrated. This surface-mount interface component operates across single supply (10V–30V) or dual supply (±4.5V–20V) configurations with switching times of 150ns (Ton) and 100ns (Toff). The part is active in production status and ROHS3 compliant. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, extended temperature ranges, different packaging formats, or inventory optimization while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Switch Circuit Type	DPST - NO
Multiplexer/Demultiplexer Circuit	2:1
Number of Circuits	2
On-State Resistance (Max)	45Ohm
Channel-to-Channel Matching (ΔRon)	500mOhm
Voltage - Supply, Single (V+)	10V ~ 30V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V
Switch Time (Ton, Toff) (Max)	150ns, 100ns
Charge Injection	10pC
Channel Capacitance (CS(off), CD(off))	12pF, 12pF
Current - Leakage (IS(off)) (Max)	500pA
Crosstalk	-90dB @ 1MHz
Operating Temperature	0°C ~ 70°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the DG405DY+ is determined by the following critical parameters:

Switch Circuit Configuration: DPST - NO topology with 2:1 multiplexer/demultiplexer circuit and 2 circuits
On-State Resistance: Maximum 45Ohm
Package Compatibility: 16-SOIC surface-mount form factor (0.154", 3.90mm width)
Supply Voltage Ranges: Single supply 10V–30V or dual supply ±4.5V–20V
Switching Performance: Ton ≤ 150ns, Toff ≤ 100ns
Signal Integrity: Crosstalk ≤ -90dB @ 1MHz, leakage current ≤ 500pA
Compliance: ROHS3 compliant, MSL 1

Substitute parts are grouped into two categories: direct equivalents (identical electrical and mechanical specifications) and parametric equivalents (matching core functionality with allowable variations in secondary parameters such as operating temperature range or charge injection, provided core switching and supply specifications remain compatible).

Parameter Comparison

Parameter	DG405DY+	DG405CY+	DG405DY-E3	DG405DY-T1-E3
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Vishay Siliconix	Vishay Siliconix
Switch Circuit	DPST - NO	DPST - NO	DPST - NO	DPST - NO
Multiplexer/Demultiplexer	2:1	2:1	2:1	2:1
Number of Circuits	2	2	2	2
On-State Resistance (Max)	45Ohm	45Ohm	45Ohm	45Ohm
Voltage - Supply, Single (V+)	10V ~ 30V	10V ~ 30V	13V ~ 36V	13V ~ 36V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V	±4.5V ~ 20V	±7V ~ 22V	±7V ~ 22V
Switch Time (Ton, Toff) (Max)	150ns, 100ns	150ns, 100ns	150ns, 100ns	150ns, 100ns
Charge Injection	10pC	10pC	60pC	60pC
Channel Capacitance (CS(off), CD(off))	12pF, 12pF	12pF, 12pF	12pF, 12pF	12pF, 12pF
Current - Leakage (IS(off)) (Max)	500pA	500pA	500pA	500pA
Crosstalk	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	16-SOIC (0.154", 3.90mm)	16-SOIC (0.154", 3.90mm)	16-SOIC (0.154", 3.90mm)	16-SOIC (0.154", 3.90mm)
Packaging Format	Tube	Tube	Tube	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

DG405CY+ (Analog Devices Inc./Maxim Integrated): Direct parametric equivalent with identical electrical specifications and operating temperature range (0°C–70°C). Suitable for applications requiring equivalent performance from the same manufacturer family. Both tube-packaged variants maintain identical supply voltage ranges and switching characteristics.

DG405DY-E3 (Vishay Siliconix): Parametric equivalent with extended operating temperature range (-40°C–85°C) and higher charge injection (60pC versus 10pC). Supply voltage ranges are expanded (13V–36V single supply, ±7V–22V dual supply). Appropriate for applications requiring wider temperature operation or higher supply voltage tolerance. Tube packaging format.

DG405DY-T1-E3 (Vishay Siliconix): Functionally equivalent to DG405DY-E3 with identical electrical specifications and extended temperature range (-40°C–85°C). Differentiated by Tape & Reel (TR) packaging format, suitable for high-volume automated assembly processes. All core switching and signal integrity parameters remain consistent with the main part.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical 16-SOIC package geometry, ensuring mechanical and thermal compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can DG405CY+ be used as a direct replacement for DG405DY+?

A: Yes. DG405CY+ is a direct parametric equivalent manufactured by Analog Devices Inc./Maxim Integrated with identical electrical specifications, supply voltage ranges (10V–30V single, ±4.5V–20V dual), switching times (150ns/100ns), and operating temperature (0°C–70°C). The only difference is packaging format (tube). Both parts are ROHS3 compliant with MSL 1 rating.

Q: What are the key differences between DG405DY+ and the Vishay Siliconix variants?

A: The Vishay Siliconix parts (DG405DY-E3 and DG405DY-T1-E3) offer extended operating temperature range (-40°C–85°C versus 0°C–70°C) and higher charge injection (60pC versus 10pC). Supply voltage ranges are also expanded (13V–36V single supply, ±7V–22V dual supply). Switching times, on-state resistance, and crosstalk specifications remain identical. The DG405DY-T1-E3 differs from DG405DY-E3 only in packaging format (Tape & Reel versus Tube).

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All parts use the 16-SOIC package (0.154", 3.90mm width) with identical pin configuration and mechanical dimensions. PCB layout and footprint design require no modification for any of these substitutes.

Q: Which substitute should be selected for high-volume production?

A: DG405DY-T1-E3 is optimized for high-volume automated assembly due to Tape & Reel packaging format. This variant provides the same electrical performance as DG405DY-E3 with extended temperature range and is available in higher inventory quantities (3225 Pcs).

Q: Can these parts be used interchangeably in applications requiring low charge injection?

A: DG405DY+ and DG405CY+ both specify 10pC charge injection and are suitable for low-charge-injection applications. DG405DY-E3 and DG405DY-T1-E3 specify 60pC charge injection and are not interchangeable in applications with strict charge injection requirements below 60pC.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Moisture sensitivity level is MSL 1 (unlimited shelf life under controlled conditions).

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