DG405CY Equivalent & Substitute Parts

Part Overview

The DG405CY is a 2-circuit IC switch with DPST-NO configuration and 45Ohm on-state resistance, manufactured by Analog Devices Inc./Maxim Integrated in a 16-SOIC surface mount package. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The DG405CY operates with single supply voltage (10V ~ 30V) or dual supply voltage (±4.5V ~ 20V), featuring 150ns turn-on and 100ns turn-off switching times suitable for precision analog switching applications.

Key Parameters

Parameter	Value
Switch Circuit Configuration	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	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the DG405CY is determined by the following critical parameters:

Switch circuit configuration (DPST - NO)
Multiplexer/demultiplexer circuit topology (2:1)
On-state resistance maximum (45Ohm)
Package type (16-SOIC surface mount)
Supply voltage compatibility (single or dual supply operation)
Switching time performance (Ton, Toff)
Leakage current specification (500pA maximum)
Crosstalk performance (-90dB @ 1MHz)

Substitute parts are grouped into two categories:

Direct Manufacturer Equivalents (Analog Devices Inc./Maxim Integrated): Parts DG405CY+ and DG405DY+ maintain identical electrical specifications and differ only in product status (active vs. obsolete) and packaging format (tube vs. tape & reel).

Manufacturer Recommended Alternatives (Vishay Siliconix): Parts DG405DY-E3 and DG405DY-T1-E3 provide functional equivalence with extended operating temperature range (-40°C ~ 85°C) and enhanced supply voltage specifications (13V ~ 36V single supply, ±7V ~ 22V dual supply). These alternatives feature increased charge injection (60pC) compared to the original specification (10pC).

Parameter Comparison

Parameter	DG405CY	DG405CY+	DG405DY+	DG405DY-E3	DG405DY-T1-E3
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Vishay Siliconix	Vishay Siliconix
Product Status	Obsolete	Active	Active	Active	Active
Switch Circuit	DPST - NO	DPST - NO	DPST - NO	DPST - NO	DPST - NO
Multiplexer/Demultiplexer Circuit	2:1	2:1	2:1	2:1	2:1
Number of Circuits	2	2	2	2	2
On-State Resistance (Max)	45Ohm	45Ohm	45Ohm	45Ohm	45Ohm
Channel-to-Channel Matching (ΔRon)	500mOhm	500mOhm	500mOhm	Not specified	Not specified
Voltage - Supply, Single (V+)	10V ~ 30V	10V ~ 30V	10V ~ 30V	13V ~ 36V	13V ~ 36V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V	±4.5V ~ 20V	±4.5V ~ 20V	±7V ~ 22V	±7V ~ 22V
Switch Time (Ton, Toff) (Max)	150ns, 100ns	150ns, 100ns	150ns, 100ns	150ns, 100ns	150ns, 100ns
Charge Injection	10pC	10pC	10pC	60pC	60pC
Channel Capacitance (CS(off), CD(off))	12pF, 12pF	12pF, 12pF	12pF, 12pF	12pF, 12pF	12pF, 12pF
Current - Leakage (IS(off)) (Max)	500pA	500pA	500pA	500pA	500pA
Crosstalk	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)
Packaging Format	Not specified	Tube	Tube	Tube	Tape & Reel (TR)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For RoHS Compliance Requirements: The DG405CY is RoHS non-compliant. All substitute parts (DG405CY+, DG405DY+, DG405DY-E3, DG405DY-T1-E3) are ROHS3 compliant and suitable for applications requiring regulatory compliance with RoHS directives.

For Active Product Status: The DG405CY is obsolete. DG405CY+, DG405DY+, DG405DY-E3, and DG405DY-T1-E3 are all active products with ongoing manufacturer support and availability.

For Extended Temperature Operation: Applications requiring operating temperatures below 0°C or above 70°C must use DG405DY-E3 or DG405DY-T1-E3, which support -40°C ~ 85°C operating range.

For Extended Supply Voltage Range: Applications requiring supply voltages outside the DG405CY specification (10V ~ 30V single supply, ±4.5V ~ 20V dual supply) must use DG405DY-E3 or DG405DY-T1-E3, which support 13V ~ 36V single supply and ±7V ~ 22V dual supply.

For Charge Injection Sensitivity: Applications sensitive to charge injection must account for the 60pC specification of DG405DY-E3 and DG405DY-T1-E3 compared to the 10pC specification of DG405CY, DG405CY+, and DG405DY+.

For Packaging Format: DG405DY-T1-E3 is supplied in Tape & Reel format suitable for automated assembly. DG405CY+, DG405DY+, and DG405DY-E3 are supplied in Tube format.

Frequently Asked Questions (FAQ)

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

A: Yes. DG405CY+ maintains identical electrical specifications and package configuration. The primary differences are active product status and ROHS3 compliance. Packaging format differs (tube vs. unspecified original).

Q: What are the key differences between Analog Devices and Vishay Siliconix versions?

A: Analog Devices versions (DG405CY+, DG405DY+) maintain the original 10pC charge injection and 0°C ~ 70°C operating temperature. Vishay Siliconix versions (DG405DY-E3, DG405DY-T1-E3) feature 60pC charge injection, extended operating temperature (-40°C ~ 85°C), and extended supply voltage ranges (13V ~ 36V single supply, ±7V ~ 22V dual supply).

Q: Are all substitute parts pin-compatible with DG405CY?

A: Yes. All substitute parts use the 16-SOIC package with identical pinout and footprint (0.154", 3.90mm width).

Q: Which substitute part should be selected for high-volume automated assembly?

A: DG405DY-T1-E3 is supplied in Tape & Reel format optimized for automated pick-and-place assembly operations.

Q: Can DG405DY-E3 or DG405DY-T1-E3 be used in applications with strict charge injection requirements?

A: These parts feature 60pC charge injection compared to 10pC in the original DG405CY. Circuit designs sensitive to charge injection must evaluate compatibility with the higher specification.

Q: What is the impact of using DG405DY-E3 or DG405DY-T1-E3 in circuits designed for 10V ~ 30V supply voltage?

A: These parts support the 10V ~ 30V range within their extended specification (13V ~ 36V). Operation at 10V ~ 13V is within specification for both parts. No functional impact is expected within the original design voltage range.

Q: Are all substitute parts REACH compliant?

A: Yes. All substitute parts maintain REACH Unaffected status, consistent with the original DG405CY specification.

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