DG441CY Equivalent & Substitute Parts

Part Overview

The DG441CY is a 4-circuit IC switch manufactured by Analog Devices Inc./Maxim Integrated, configured as a SPST-NC (Single Pole Single Throw - Normally Closed) interface component. This device features 1:1 multiplexer/demultiplexer functionality with an 85Ohm on-state resistance and is packaged in a 16-SOIC surface mount configuration.

The DG441CY is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this switching interface.

Key Parameters

Parameter	Value
Switch Circuit Configuration	SPST - NC
Number of Circuits	4
Multiplexer/Demultiplexer Ratio	1:1
On-State Resistance (Max)	85Ohm
Channel-to-Channel Matching (ΔRon Max)	4Ohm
Voltage Supply - Single (V+)	10V ~ 30V
Voltage Supply - Dual (V±)	±4.5V ~ 20V
Switch Time (Ton/Toff Max)	250ns / 120ns
Charge Injection	5pC
Channel Capacitance (CS(off) / CD(off))	4pF / 4pF
Current - Leakage (IS(off) Max)	500pA
Crosstalk	-100dB @ 1MHz
Operating Temperature Range	0°C ~ 70°C (TA)
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package	16-SOIC

Substitute Part Grouping Explanation

Substitution of the DG441CY is determined by strict equivalence across the following critical parameters:

Switch Circuit Type: SPST - NC configuration
Circuit Count: 4 independent circuits
Multiplexer Ratio: 1:1 functionality
On-State Resistance: 85Ohm maximum
Channel Matching: 4Ohm maximum variation
Supply Voltage Ranges: 10V ~ 30V (single) and ±4.5V ~ 20V (dual)
Switching Performance: 250ns Ton / 120ns Toff maximum
Electrical Characteristics: Charge injection, capacitance, leakage current, and crosstalk specifications
Operating Temperature: 0°C ~ 70°C range
Package Format: 16-SOIC surface mount configuration

The DG441CY+ meets all these criteria and is therefore a direct functional equivalent.

Parameter Comparison

Parameter	DG441CY (Main Part)	DG441CY+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Switch Circuit	SPST - NC	SPST - NC
Number of Circuits	4	4
Multiplexer/Demultiplexer Ratio	1:1	1:1
On-State Resistance (Max)	85Ohm	85Ohm
Channel-to-Channel Matching (ΔRon Max)	4Ohm	4Ohm
Voltage - Supply, Single (V+)	10V ~ 30V	10V ~ 30V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V	±4.5V ~ 20V
Switch Time (Ton, Toff) Max	250ns, 120ns	250ns, 120ns
Charge Injection	5pC	5pC
Channel Capacitance (CS(off), CD(off))	4pF, 4pF	4pF, 4pF
Current - Leakage (IS(off)) Max	500pA	500pA
Crosstalk	-100dB @ 1MHz	-100dB @ 1MHz
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)
Mounting Type	Surface Mount	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The DG441CY+ is a direct substitute for the DG441CY. Both parts are manufactured by Analog Devices Inc./Maxim Integrated and share identical electrical and mechanical specifications across all critical parameters.

The primary distinction between these parts is product status and regulatory compliance. The DG441CY is obsolete, while the DG441CY+ is active and available in production quantities. The DG441CY+ carries ROHS3 compliance, whereas the DG441CY is RoHS non-compliant. Both parts maintain identical MSL ratings and REACH status.

For new designs or ongoing production requiring this switching interface, the DG441CY+ is the appropriate selection due to its active status and regulatory compliance posture.

Frequently Asked Questions (FAQ)

Q: Can the DG441CY+ directly replace the DG441CY in existing designs?

A: Yes. The DG441CY+ is electrically and mechanically identical to the DG441CY across all specified parameters, including on-state resistance, switching times, voltage ranges, and package configuration. No circuit modifications are required.

Q: What is the difference between DG441CY and DG441CY+?

A: The primary differences are product status and RoHS compliance. The DG441CY is obsolete and RoHS non-compliant. The DG441CY+ is active and ROHS3 compliant. All electrical and mechanical specifications are identical.

Q: Are there any packaging differences between these parts?

A: Both parts use the 16-SOIC surface mount package with identical dimensions (0.154" width, 3.90mm). The DG441CY+ is supplied in tube packaging, while the DG441CY packaging specification was not provided.

Q: What supply voltage options does this IC switch support?

A: The DG441CY and DG441CY+ support both single and dual supply configurations. Single supply operation ranges from 10V to 30V (V+). Dual supply operation ranges from ±4.5V to ±20V (V±).

Q: What is the on-state resistance specification?

A: The maximum on-state resistance is 85Ohm with a channel-to-channel matching specification of 4Ohm maximum variation (ΔRon).

Q: Is this component suitable for high-frequency applications?

A: The DG441CY and DG441CY+ are specified for switching times of 250ns (Ton) and 120ns (Toff) with crosstalk performance of -100dB at 1MHz. These specifications define the frequency response characteristics for this interface component.

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