DG403CY Equivalent & Substitute Parts

Part Overview

The DG403CY is a 2-circuit IC switch with SPDT (Single Pole Double Throw) configuration and 45Ohm on-state resistance in 16-SOIC surface mount packaging. Manufactured by Analog Devices Inc./Maxim Integrated, this component is classified as obsolete. Due to its discontinued status, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute options maintain core electrical characteristics while offering improved product status and compliance certifications.

Key Parameters

Parameter	Value
Switch Circuit Type	SPDT
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

Substitute Part Grouping Explanation

Substitution eligibility for the DG403CY is determined by the following critical parameters:

Primary Substitution Criteria:

Switch circuit topology (SPDT or SPST - NO/NC)
Number of circuits (2)
On-state resistance maximum (45Ohm)
Package type (16-SOIC surface mount)
Supply voltage ranges (single and dual)
Switch timing characteristics (Ton, Toff)

Substitutes are grouped into two categories:

Direct Equivalents (Same Circuit Topology): Parts maintaining SPDT 2:1 multiplexer configuration with identical electrical performance specifications.
Functional Alternatives (Different Circuit Topology): Parts with SPST - NO/NC configuration offering 1:1 multiplexer operation, suitable for applications where the switching topology can be adapted.

All substitute parts maintain the 16-SOIC package footprint, 45Ohm on-state resistance, 500pA maximum leakage current, and -90dB crosstalk specification. Differences in channel-to-channel matching, supply voltage ranges, charge injection, and operating temperature ranges are noted in the parameter comparison table.

Parameter Comparison

Parameter	DG403CY (Main)	DG403CY+ (Analog Devices)	DG403DY-E3 (Vishay)	DG403DY-T1-E3 (Vishay)	DG403DYZ (Renesas)	DG403DYZ-T (Renesas)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Vishay Siliconix	Vishay Siliconix	Renesas Electronics Corporation	Renesas Electronics Corporation
Product Status	Obsolete	Active	Active	Active	Active	Active
Switch Circuit	SPDT	SPDT	SPST - NO/NC	SPST - NO/NC	SPDT	SPDT
Multiplexer/Demultiplexer Circuit	2:1	2:1	1:1	1:1	2:1	2:1
Number of Circuits	2	2	2	2	2	2
On-State Resistance (Max)	45Ohm	45Ohm	45Ohm	45Ohm	45Ohm	45Ohm
Channel-to-Channel Matching (ΔRon)	500mOhm	500mOhm	3Ohm	3Ohm	3Ohm	3Ohm
Voltage - Supply, Single (V+)	10V ~ 30V	10V ~ 30V	13V ~ 36V	13V ~ 36V	5V ~ 34V	5V ~ 34V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V	±4.5V ~ 20V	±7V ~ 22V	±7V ~ 22V	±5V ~ 17V	±5V ~ 17V
Switch Time (Ton, Toff) (Max)	150ns, 100ns	150ns, 100ns	150ns, 100ns	150ns, 100ns	150ns, 100ns	150ns, 100ns
Charge Injection	10pC	10pC	60pC	60pC	60pC	60pC
Channel Capacitance (CS(off), CD(off))	12pF, 12pF	12pF, 12pF	12pF, 12pF	12pF, 12pF	12pF, 12pF	12pF, 12pF
Current - Leakage (IS(off)) (Max)	500pA	500pA	500pA	500pA	500pA	500pA
Crosstalk	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°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)	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)
Packaging Type	Not specified	Tube	Tube	Cut Tape (CT) & Digi-Reel®	Tube	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

For Direct Topology Replacement (SPDT 2:1 Configuration):

DG403CY+ (Analog Devices Inc./Maxim Integrated) is the primary direct equivalent. It maintains identical electrical specifications and SPDT 2:1 circuit topology while offering active product status and ROHS3 compliance. This part is suitable for applications requiring no circuit redesign.

DG403DYZ and DG403DYZ-T (Renesas Electronics Corporation) provide SPDT 2:1 functionality with active status and ROHS3 compliance. These parts support extended operating temperature range (-40°C to 85°C) and broader single supply voltage range (5V ~ 34V), making them suitable for industrial and automotive applications. Moisture sensitivity level MSL-3 requires appropriate handling during assembly.

For Functional Alternative (SPST - NO/NC Configuration):

DG403DY-E3 and DG403DY-T1-E3 (Vishay Siliconix) offer SPST - NO/NC topology with 1:1 multiplexer operation. These parts are suitable only for applications where the switching circuit can be adapted from SPDT to SPST configuration. Extended operating temperature range (-40°C to 85°C) and ROHS3 compliance are provided. DG403DY-T1-E3 offers higher inventory availability in cut tape packaging.

Compliance Considerations:

All substitute parts are ROHS3 compliant and REACH unaffected, addressing regulatory requirements for the obsolete DG403CY. The main part is RoHS non-compliant and should be replaced in new designs subject to RoHS directives.

Frequently Asked Questions (FAQ)

Q: Can DG403CY+ be used as a direct replacement for DG403CY?

A: Yes. DG403CY+ maintains identical SPDT 2:1 circuit topology, on-state resistance (45Ohm), supply voltage ranges, switch timing, and package footprint (16-SOIC). The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between DG403DYZ and DG403DYZ-T?

A: Both parts are manufactured by Renesas Electronics Corporation with identical electrical specifications and SPDT 2:1 topology. The difference is packaging: DG403DYZ is supplied in tube packaging, while DG403DYZ-T is supplied in cut tape (CT) and Digi-Reel® format. Select based on assembly process requirements.

Q: Can DG403DY-E3 replace DG403CY in all applications?

A: DG403DY-E3 has a different circuit topology (SPST - NO/NC instead of SPDT) and 1:1 multiplexer configuration instead of 2:1. It is suitable only for applications where the switching circuit topology can be adapted. Verify circuit compatibility before substitution.

Q: What are the key electrical differences between substitute parts?

A: Channel-to-channel matching (ΔRon) differs: DG403CY and DG403CY+ specify 500mOhm, while Vishay and Renesas parts specify 3Ohm. Charge injection differs: Analog Devices parts specify 10pC, while Vishay and Renesas parts specify 60pC. Operating temperature ranges differ: Analog Devices parts specify 0°C ~ 70°C, while Vishay and Renesas parts specify -40°C ~ 85°C.

Q: Are there supply voltage compatibility issues between substitute parts?

A: Supply voltage ranges differ slightly. DG403CY specifies 10V ~ 30V (single) and ±4.5V ~ 20V (dual). DG403DY-E3 specifies 13V ~ 36V (single) and ±7V ~ 22V (dual). DG403DYZ specifies 5V ~ 34V (single) and ±5V ~ 17V (dual). Verify your circuit's supply voltage falls within the substitute part's specified range.

Q: What is the significance of Moisture Sensitivity Level (MSL)?

A: MSL-1 (unlimited) parts like DG403CY+ have no moisture sensitivity restrictions. MSL-3 (168 hours) parts like DG403DYZ require storage in controlled humidity environments and have a 168-hour floor life after opening. Select based on your manufacturing environment and assembly timeline.

Q: Which substitute offers the best inventory availability?

A: DG403DY-T1-E3 (Vishay Siliconix) offers the highest inventory with 16,987 pieces in stock. However, this part has SPST - NO/NC topology requiring circuit adaptation. For direct SPDT replacement with high availability, DG403DYZ-T (Renesas) offers 1,313 pieces.

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