DG401CY+ Equivalent & Substitute Parts

Part Overview

The DG401CY+ is a 2-circuit SPST-NO (Single Pole Single Throw - Normally Open) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This interface component operates with 45Ohm on-state resistance and is housed in a 16-SOIC surface mount package. The part is currently in active production status with 1183 units in stock.

Substitute parts become necessary when the primary part reaches end-of-life, experiences supply constraints, or when design requirements demand extended operating temperature ranges or alternative packaging formats. The DG401 base product family offers multiple equivalent variants across different manufacturers and packaging options.

Key Parameters

Parameter	Value
Switch Circuit Type	SPST - NO
Number of Circuits	2
Multiplexer/Demultiplexer Circuit	1:1
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 DG401CY+ is determined by the following critical parameters:

Mandatory Matching Parameters:

Switch circuit type: SPST - NO
Number of circuits: 2
Multiplexer/Demultiplexer circuit: 1:1
On-state resistance (Max): 45Ohm
Package / Case: 16-SOIC (0.154", 3.90mm Width)
Mounting type: Surface Mount

Allowable Variation Parameters:

Voltage supply ranges may exceed the primary part specifications (wider operating ranges are acceptable)
Channel-to-Channel Matching (ΔRon) may differ or be unspecified
Charge Injection may vary
Crosstalk performance may exceed specifications
Operating temperature range may be extended
Packaging format (Tube, Tape & Reel, Cut Tape) may differ
Product status (Active or Obsolete) does not prevent substitution if electrical parameters align
Moisture Sensitivity Level may differ

The following parts meet substitution criteria for the DG401CY+: DG401DY-E3, DG401DY-T1-E3, DG401DYZ, and DG401DYZ-T.

Parameter Comparison

Parameter	DG401CY+	DG401DY-E3	DG401DY-T1-E3	DG401DYZ	DG401DYZ-T
Manufacturer	Analog Devices Inc./Maxim Integrated	Vishay Siliconix	Vishay Siliconix	Renesas Electronics Corporation	Renesas Electronics Corporation
Switch Circuit Type	SPST - NO	SPST - NO	SPST - NO	SPST - NO	SPST - NO
Number of Circuits	2	2	2	2	2
On-State Resistance (Max)	45Ohm	45Ohm	45Ohm	45Ohm	45Ohm
Voltage - Supply, Single (V+)	10V ~ 30V	13V ~ 36V	13V ~ 36V	5V ~ 34V	5V ~ 34V
Voltage - Supply, Dual (V±)	±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
Charge Injection	10pC	60pC	60pC	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	-94.8dB @ 1MHz	-94.8dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz
Operating Temperature	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)
Packaging Format	-	Tube	Tape & Reel (TR)	Tube	Cut Tape (CT) & Digi-Reel®
Product Status	Active	Active	Active	Obsolete	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)
Inventory Status	1183 Pcs New Original In Stock	776 Pcs New Original In Stock	15900 Pcs New Original In Stock	1086 Pcs New Original In Stock	2354 Pcs New Original In Stock

Engineering Selection Recommendations

DG401DY-E3 (Vishay Siliconix, Tube Packaging) Select this substitute when tube packaging is required for manual assembly or when extended operating temperature range (-40°C to 85°C) is necessary. This part maintains active product status and ROHS3 compliance. Charge injection increases to 60pC compared to the primary part's 10pC specification.

DG401DY-T1-E3 (Vishay Siliconix, Tape & Reel Packaging) This variant is optimal for high-volume automated assembly operations requiring Tape & Reel format. It provides the highest inventory availability (15900 units) among substitute options. Extended operating temperature range and active product status make this suitable for production environments. Charge injection specification is 60pC.

DG401DYZ (Renesas Electronics Corporation, Tube Packaging) This part carries obsolete product status but maintains full electrical compatibility. It offers the widest single supply voltage range (5V ~ 34V) and extended operating temperature (-40°C to 85°C). Moisture Sensitivity Level is 3 (168 Hours), requiring controlled storage conditions. Channel-to-Channel Matching is specified at 3Ohm.

DG401DYZ-T (Renesas Electronics Corporation, Cut Tape & Digi-Reel® Packaging) This obsolete part provides Cut Tape and Digi-Reel® packaging options with 2354 units in stock. It shares electrical specifications with DG401DYZ and requires MSL 3 handling. This format suits semi-automated or manual assembly workflows.

Frequently Asked Questions (FAQ)

Q: Can DG401DY-E3 or DG401DY-T1-E3 be used as direct replacements for DG401CY+? A: Yes. Both Vishay Siliconix variants maintain identical switch circuit type, number of circuits, on-state resistance, and 16-SOIC package. The primary differences are extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and increased charge injection (60pC versus 10pC). These differences do not prevent substitution in applications where the primary part's specifications are met.

Q: What is the difference between DG401DY-E3 and DG401DY-T1-E3? A: Both parts are manufactured by Vishay Siliconix with identical electrical specifications. The difference is packaging format: DG401DY-E3 is supplied in Tube format, while DG401DY-T1-E3 is supplied in Tape & Reel (TR) format. Tape & Reel is standard for automated pick-and-place assembly, while Tube format is used for manual assembly or lower-volume applications.

Q: Are the Renesas DG401DYZ and DG401DYZ-T suitable for new designs? A: Both Renesas variants carry obsolete product status. While they meet all electrical substitution criteria, they should be used only when supply of active parts is unavailable. The DG401DYZ-T offers Cut Tape and Digi-Reel® packaging, while DG401DYZ is supplied in Tube format. Both require MSL 3 (168 Hours) moisture control during storage and handling.

Q: How do voltage supply ranges differ among substitutes? A: The primary DG401CY+ operates at 10V ~ 30V (single supply) or ±4.5V ~ 20V (dual supply). DG401DY-E3 and DG401DY-T1-E3 extend to 13V ~ 36V (single) or ±7V ~ 22V (dual). Renesas variants (DG401DYZ, DG401DYZ-T) offer the widest range at 5V ~ 34V (single) or ±5V ~ 17V (dual). All variants are compatible with the primary part's voltage specifications.

Q: What is the significance of Charge Injection differences? A: The primary DG401CY+ specifies 10pC charge injection, while all substitute variants specify 60pC. Charge injection affects signal integrity in precision analog switching applications. If the application is sensitive to charge injection, the primary part or Vishay variants should be prioritized. If the application tolerates 60pC charge injection, all substitutes are electrically equivalent.

Q: Does MSL 3 (168 Hours) on Renesas parts affect usability? A: MSL 3 requires controlled moisture exposure during storage and handling. Parts must be stored in dry conditions and used within 168 hours of opening the moisture barrier bag. This adds handling complexity compared to MSL 1 (Unlimited) parts. For applications with standard assembly timelines, this is manageable; for extended storage or delayed assembly, MSL 1 parts (DG401CY+, DG401DY-E3, DG401DY-T1-E3) are preferred.

Q: Can I mix different substitute parts in the same production run? A: Yes. All four substitute variants meet the mandatory electrical and mechanical parameters for the DG401CY+. However, mixing different manufacturers or packaging formats may complicate inventory management and traceability. Standardizing on a single substitute variant per production batch is recommended for quality control purposes.

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