DG441DY Equivalent & Substitute Parts

Part Overview

The DG441DY is a 4-circuit SPST-NC (Single Pole Single Throw - Normally Closed) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated in a 16-SOIC surface mount package. This part operates with 85Ohm on-state resistance and supports dual supply voltages (±4.5V to ±20V) or single supply (10V to 30V). The DG441DY is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Active alternatives with identical or compatible electrical characteristics are available from multiple manufacturers.

Key Parameters

Parameter	Value
Switch Circuit Type	SPST - NC (Single Pole Single Throw - Normally Closed)
Number of Circuits	4
Multiplexer/Demultiplexer Circuit	1:1
On-State Resistance (Max)	85Ohm
Channel-to-Channel Matching (ΔRon)	4Ohm (Max)
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	-40°C ~ 85°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 for the DG441DY is determined by the following critical parameters:

Primary Substitution Criteria:

Switch circuit type: SPST - NC
Number of circuits: 4
Multiplexer configuration: 1:1
Package type: 16-SOIC surface mount
Operating temperature range: -40°C ~ 85°C minimum
On-state resistance: 85Ohm ±tolerance
Supply voltage compatibility: Dual (±4.5V ~ ±20V) or Single (10V ~ 30V)

Substitution Categories:

Direct Equivalents (Identical Specifications): Parts with matching on-state resistance (85Ohm), identical switch timing, and equivalent supply voltage ranges. These include DG441DY+ (active, tube packaging) and DG441DY-E3 (active, Vishay Siliconix variant).

Compatible Alternatives (Similar On-State Resistance): Parts with on-state resistance within acceptable tolerance for most applications, including DG441BDY-E3 (80Ohm), DG441BDY-T1-E3 (80Ohm), and ADG441BRZ (70Ohm). These maintain SPST-NC topology and 16-SOIC packaging with comparable switching performance.

Lower Resistance Alternatives: DG271BDY-E3 and DG271BDY-T1-E3 (50Ohm) provide reduced on-state resistance for applications requiring lower impedance switching paths, with faster switching times (65ns vs. 250ns).

Higher Resistance Alternatives: ADG1311YRZ (200Ohm) and ALD4201SCL (135Ohm) accommodate applications where higher on-state resistance is acceptable, offering improved performance in specific parameters such as lower charge injection or extended temperature ranges.

Parameter Comparison

Part Number	Manufacturer	On-State Resistance (Max)	ΔRon (Max)	Voltage - Dual (V±)	Voltage - Single (V+)	Ton/Toff (Max)	Charge Injection	IS(off) (Max)	Operating Temp	RoHS Status	Product Status
DG441DY	Analog Devices/Maxim	85Ohm	4Ohm	±4.5V ~ ±20V	10V ~ 30V	250ns, 120ns	5pC	500pA	-40°C ~ 85°C	Non-compliant	Obsolete
DG441DY+	Analog Devices/Maxim	85Ohm	4Ohm	±4.5V ~ ±20V	10V ~ 30V	250ns, 120ns	5pC	500pA	-40°C ~ 85°C	ROHS3 Compliant	Active
DG441DY-E3	Vishay Siliconix	85Ohm	4Ohm	±15V	12V	220ns, 120ns	-1pC	500pA	-40°C ~ 85°C	ROHS3 Compliant	Active
DG441BDY-E3	Vishay Siliconix	80Ohm	2Ohm	±7V ~ ±22V	13V ~ 36V	220ns, 120ns	-1pC	500pA	-40°C ~ 85°C	ROHS3 Compliant	Active
DG441BDY-T1-E3	Vishay Siliconix	80Ohm	2Ohm	±7V ~ ±22V	13V ~ 36V	220ns, 120ns	-1pC	500pA	-40°C ~ 85°C	ROHS3 Compliant	Active
ADG441BRZ	Analog Devices	70Ohm	—	±15V	12V	110ns, 60ns	1pC	500pA	-40°C ~ 85°C	ROHS3 Compliant	Active
ADG441BRZ-REEL	Analog Devices	70Ohm	—	±15V	12V	110ns, 60ns	1pC	500pA	-40°C ~ 85°C	ROHS3 Compliant	Active
DG271BDY-E3	Vishay Siliconix	50Ohm	—	±15V	—	65ns, 65ns	-5pC	1nA	-40°C ~ 85°C	ROHS3 Compliant	Active
DG271BDY-T1-E3	Vishay Siliconix	50Ohm	—	±15V	—	65ns, 65ns	-5pC	1nA	-40°C ~ 85°C	ROHS3 Compliant	Active
ADG1311YRZ	Analog Devices	200Ohm	5Ohm	±15V	12V	125ns, 50ns	2pC	10nA	-40°C ~ 105°C	ROHS3 Compliant	Active
ALD4201SCL	Advanced Linear Devices	135Ohm	2.7Ohm	±1.5V ~ ±6V	3V ~ 12V	240ns, 130ns	1pC	100pA	0°C ~ 70°C	ROHS3 Compliant	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance): Select DG441DY+ for immediate drop-in replacement. This part maintains all electrical specifications of the original DG441DY while offering ROHS3 compliance and active product status. Packaging is available in tube format.

For RoHS3 Compliance with Minimal Specification Variance: DG441DY-E3 (Vishay Siliconix) provides ROHS3-compliant equivalent with 85Ohm on-state resistance and identical operating temperature range. Supply voltage specification differs (±15V dual vs. ±4.5V ~ ±20V), requiring verification against circuit requirements.

For Improved Performance with Lower On-State Resistance: ADG441BRZ and ADG441BRZ-REEL offer 70Ohm on-state resistance with faster switching times (110ns/60ns vs. 250ns/120ns) and lower charge injection (1pC vs. 5pC). These are suitable for applications where reduced impedance and faster switching improve system performance. Supply voltage is fixed at ±15V or 12V single supply.

For Lowest On-State Resistance: DG271BDY-E3 and DG271BDY-T1-E3 provide 50Ohm on-state resistance with fastest switching times (65ns). These are appropriate for high-speed switching applications requiring minimal signal path impedance. Dual supply only (±15V); single supply not supported.

For Extended Temperature Range: ADG1311YRZ supports -40°C to 105°C operating range, exceeding the DG441DY specification. Select this part for applications requiring operation above 85°C. On-state resistance is 200Ohm; circuit design must accommodate higher impedance.

For Low-Voltage Applications: ALD4201SCL operates from ±1.5V to ±6V dual supply or 3V to 12V single supply, suitable for battery-powered and low-voltage systems. Operating temperature range is 0°C to 70°C; not suitable for extended temperature applications.

Packaging Considerations:

Tube packaging: DG441DY+, DG441DY-E3, DG441BDY-E3, DG271BDY-E3, ADG1311YRZ, ALD4201SCL
Tape & Reel (TR): DG441BDY-T1-E3, DG271BDY-T1-E3
Cut Tape & Digi-Reel: ADG441BRZ-REEL

All parts maintain 16-SOIC surface mount package compatibility.

Frequently Asked Questions (FAQ)

Q: Can DG441DY+ be used as a direct replacement for DG441DY? A: Yes. DG441DY+ is electrically identical to DG441DY with matching on-state resistance (85Ohm), switching times, and supply voltage ranges. The primary difference is RoHS3 compliance and active product status. Tube packaging is standard.

Q: What is the difference between DG441DY-E3 and DG441DY+? A: Both are 85Ohm SPST-NC 4-circuit switches in 16-SOIC packages. DG441DY-E3 is manufactured by Vishay Siliconix with fixed supply voltages (±15V or 12V single), while DG441DY+ (Analog Devices/Maxim) supports wider supply ranges (±4.5V ~ ±20V or 10V ~ 30V). Verify supply voltage compatibility before selection.

Q: Can I use ADG441BRZ instead of DG441DY? A: ADG441BRZ is compatible if your circuit tolerates 70Ohm on-state resistance (vs. 85Ohm). It offers faster switching (110ns/60ns vs. 250ns/120ns) and lower charge injection (1pC vs. 5pC). Supply voltage is fixed at ±15V or 12V; verify compatibility with your power supply design.

Q: What is the advantage of DG271BDY-E3 over DG441DY? A: DG271BDY-E3 provides 50Ohm on-state resistance and fastest switching times (65ns), reducing signal path impedance and propagation delay. This is beneficial for high-frequency or high-speed switching applications. Limitation: dual supply only (±15V); single supply not supported.

Q: Is ALD4201SCL suitable for my application requiring -40°C to 85°C operation? A: No. ALD4201SCL operates from 0°C to 70°C only. For extended low-temperature operation (-40°C), select DG441DY+, DG441DY-E3, DG441BDY-E3, DG271BDY-E3, or ADG441BRZ.

Q: Can I use ADG1311YRZ in place of DG441DY? A: ADG1311YRZ is functionally compatible but with 200Ohm on-state resistance (vs. 85Ohm). Circuit design must accommodate higher impedance. Advantages include extended temperature range (-40°C to 105°C) and lower charge injection (2pC). Verify impedance requirements before substitution.

Q: What packaging options are available for high-volume production? A: Tape & Reel (TR) packaging is available for DG441BDY-T1-E3 and DG271BDY-T1-E3. Cut Tape & Digi-Reel is available for ADG441BRZ-REEL. Tube packaging is standard for most alternatives. Confirm packaging availability with your supplier for production quantities.

Q: Are all substitute parts RoHS3 compliant? A: All listed substitute parts are ROHS3 compliant. The original DG441DY is RoHS non-compliant. For regulatory compliance, select any active substitute part listed in this document.

Q: Can I mix different substitute parts in the same design? A: Not recommended. Mixing parts with different on-state resistances (50Ohm, 70Ohm, 80Ohm, 85Ohm, 135Ohm, 200Ohm) will result in unmatched channel characteristics and crosstalk performance. Maintain consistent part selection across all switch channels in a design.

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