DG201HSDY Equivalent & Substitute Parts

Part Overview

The DG201HSDY is a 4-circuit SPST-NC (Single Pole Single Throw - Normally Closed) analog switch IC manufactured by Vishay Siliconix, housed in a 16-SOIC surface mount package. This component features 50Ohm on-state resistance and operates across supply voltages of 13V to 36V (single supply) or ±7V to ±22V (dual supply). The DG201HSDY is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Active alternatives from Analog Devices Inc. and other manufacturers provide comparable or enhanced functionality while maintaining RoHS3 compliance and current product availability.

Key Parameters

Parameter	DG201HSDY
Manufacturer	Vishay Siliconix
Switch Circuit Type	SPST - NC
Number of Circuits	4
Multiplexer/Demultiplexer Circuit	1:1
On-State Resistance (Max)	50Ohm
Channel-to-Channel Matching (ΔRon)	1.5Ohm
Voltage - Supply, Single (V+)	13V ~ 36V
Voltage - Supply, Dual (V±)	±7V ~ 22V
Switch Time (Ton, Toff) (Max)	60ns, 50ns
Charge Injection	-5pC
Channel Capacitance (CS(off), CD(off))	5pF
Current - Leakage (IS(off)) (Max)	1nA
Crosstalk	-100dB @ 100kHz
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the DG201HSDY is determined by the following critical parameters: switch circuit type (SPST-NC), number of circuits (4), multiplexer configuration (1:1), package type (16-SOIC), and mounting method (surface mount). On-state resistance, supply voltage ranges, switching speed, and leakage current are secondary parameters that define functional equivalence tiers.

Substitute parts are grouped into three categories:

Category 1: Direct Equivalents (50Ohm On-State Resistance) Parts maintaining the 50Ohm on-state resistance specification with identical circuit topology. These provide pin-compatible replacement with minimal design impact.

Category 2: Functional Alternatives (90Ohm On-State Resistance) Parts with higher on-state resistance (90Ohm) but maintaining SPST-NC topology and 4-circuit configuration. These require circuit analysis to confirm suitability for signal path impedance requirements.

Category 3: Extended Range Alternatives (135Ohm to 200Ohm On-State Resistance) Parts with significantly higher on-state resistance or different supply voltage specifications. These are suitable only when impedance matching and voltage requirements are compatible with application parameters.

Parameter Comparison

Part Number	Manufacturer	On-State Resistance (Max)	ΔRon (Max)	V+ Supply	V± Supply	Ton/Toff (Max)	Charge Injection	Leakage (Max)	Crosstalk	Temp Range	Product Status	RoHS Status	Packaging
DG201HSDY	Vishay Siliconix	50Ohm	1.5Ohm	13V ~ 36V	±7V ~ 22V	60ns, 50ns	-5pC	1nA	-100dB @ 100kHz	-40°C ~ 85°C	Obsolete	RoHS non-compliant	16-SOIC Tube
DG201HSDY-E3	Vishay Siliconix	50Ohm	1.5Ohm	13V ~ 36V	±7V ~ 22V	60ns, 50ns	-5pC	1nA	-100dB @ 100kHz	-40°C ~ 85°C	Active	ROHS3 Compliant	16-SOIC Tube
ADG201AKRZ	Analog Devices Inc.	90Ohm	4.5Ohm	10V ~ 15V	±10V ~ 15V	300ns, 250ns	20pC	2nA	-80dB @ 100kHz	-40°C ~ 85°C	Active	ROHS3 Compliant	16-SOIC Tube
ADG201AKRZ-REEL	Analog Devices Inc.	90Ohm	4.5Ohm	10V ~ 15V	±10V ~ 15V	300ns, 250ns	20pC	2nA	-80dB @ 100kHz	-40°C ~ 85°C	Active	ROHS3 Compliant	16-SOIC Tape & Reel
ADG201AKRZ-REEL7	Analog Devices Inc.	90Ohm	4.5Ohm	10V ~ 15V	±10V ~ 15V	300ns, 250ns	20pC	2nA	-80dB @ 100kHz	-40°C ~ 85°C	Active	ROHS3 Compliant	16-SOIC Cut Tape & Digi-Reel
ADG201HSKRZ	Analog Devices Inc.	50Ohm	1.5Ohm	10.8V ~ 16.5V	±13.5V ~ 16.5V	50ns, 50ns	10pC	1nA	-86dB @ 100kHz	-40°C ~ 85°C	Active	ROHS3 Compliant	16-SOIC Tube
ADG201HSKRZ-REEL	Analog Devices Inc.	50Ohm	1.5Ohm	10.8V ~ 16.5V	±13.5V ~ 16.5V	50ns, 50ns	10pC	1nA	-86dB @ 100kHz	-40°C ~ 85°C	Active	ROHS3 Compliant	16-SOIC Cut Tape & Digi-Reel
ALD4211SCL	Advanced Linear Devices Inc.	135Ohm	2.7Ohm	3V ~ 12V	±1.5V ~ 6V	130ns, 130ns	0.2pC	100pA	-90dB @ 100kHz	-40°C ~ 85°C	Active	ROHS3 Compliant	16-SOIC Tube
DG201ACSE+	Analog Devices Inc./Maxim Integrated	200Ohm	—	—	±4.5V ~ 18V	600ns, 450ns	20pC	5nA	-90dB @ 100kHz	0°C ~ 70°C	Active	ROHS3 Compliant	16-SOIC Tube
DG201ACSE+T	Analog Devices Inc./Maxim Integrated	200Ohm	—	—	±4.5V ~ 18V	600ns, 450ns	20pC	5nA	-90dB @ 100kHz	0°C ~ 70°C	Active	ROHS3 Compliant	16-SOIC Tape & Reel
DG201ADY+	Analog Devices Inc./Maxim Integrated	200Ohm	—	—	±4.5V ~ 18V	600ns, 450ns	20pC	5nA	-90dB @ 100kHz	-40°C ~ 85°C	Active	ROHS3 Compliant	16-SOIC Tube

Engineering Selection Recommendations

Primary Recommendation: DG201HSDY-E3 The DG201HSDY-E3 is the direct active equivalent from Vishay Siliconix, maintaining identical electrical specifications (50Ohm on-state resistance, 13V–36V single supply, ±7V–±22V dual supply) and package configuration. This part achieves ROHS3 compliance and is currently in active production status with 2060 units in stock. Selection of this part eliminates design re-qualification and ensures pin-for-pin compatibility.

Secondary Recommendation: ADG201HSKRZ or ADG201HSKRZ-REEL These Analog Devices Inc. parts maintain the 50Ohm on-state resistance and 1.5Ohm channel matching of the original DG201HSDY. Both achieve faster switching times (50ns vs. 60ns/50ns) and lower charge injection (10pC vs. -5pC). Supply voltage ranges are narrower (10.8V–16.5V single, ±13.5V–±16.5V dual) and must be verified against application requirements. ROHS3 compliance and active production status support long-term availability. ADG201HSKRZ-REEL provides cut tape and Digi-Reel packaging for high-volume applications.

Alternative for Lower Supply Voltage Applications: ALD4211SCL The ALD4211SCL from Advanced Linear Devices Inc. operates across 3V–12V single supply or ±1.5V–±6V dual supply, making it suitable for low-voltage designs. On-state resistance is 135Ohm, requiring circuit impedance analysis. Charge injection is minimal (0.2pC) and leakage current is exceptionally low (100pA). ROHS3 compliance and active status are confirmed.

Not Recommended for Direct Substitution: ADG201AKRZ Series and DG201AC/DG201AD Series The ADG201AKRZ variants feature 90Ohm on-state resistance and narrower supply voltage ranges (10V–15V), introducing impedance mismatch and potential circuit performance degradation. The DG201AC and DG201AD series operate at 200Ohm on-state resistance with significantly slower switching times (600ns/450ns), suitable only for applications where impedance and speed are not critical constraints. DG201ACSE+ and DG201ACSE+T are limited to 0°C–70°C operating temperature, restricting use in extended temperature environments.

Frequently Asked Questions (FAQ)

Q: Can I use ADG201AKRZ as a direct replacement for DG201HSDY? A: No. While both are 4-circuit SPST-NC switches in 16-SOIC packages, the ADG201AKRZ has 90Ohm on-state resistance versus 50Ohm for the DG201HSDY. This impedance difference affects signal path characteristics and may degrade performance in impedance-matched circuits. Additionally, the ADG201AKRZ supply voltage range (10V–15V) is narrower than the DG201HSDY (13V–36V single supply). Circuit re-analysis is required before substitution.

Q: What is the difference between DG201HSDY-E3 and the original DG201HSDY? A: The DG201HSDY-E3 is the active production equivalent with identical electrical specifications and package configuration. The primary differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). All electrical parameters, including on-state resistance, supply voltage ranges, switching times, and operating temperature, remain unchanged. This part is the recommended replacement for new designs and production continuity.

Q: Are ADG201HSKRZ and ADG201AKRZ pin-compatible? A: Yes, both parts use the 16-SOIC package with identical pinout. However, they are not electrically equivalent. The ADG201HSKRZ maintains 50Ohm on-state resistance and faster switching (50ns), while the ADG201AKRZ has 90Ohm resistance and slower switching (300ns/250ns). Supply voltage ranges also differ. Pin compatibility does not guarantee functional equivalence.

Q: What packaging options are available for 50Ohm equivalent parts? A: The DG201HSDY-E3 is supplied in tube packaging. Analog Devices Inc. offers the ADG201HSKRZ in tube packaging and the ADG201HSKRZ-REEL in cut tape and Digi-Reel format for high-volume production. Selection depends on assembly process requirements and order quantities.

Q: Can I use DG201ACSE+ or DG201ADY+ in place of DG201HSDY? A: These parts are not recommended for direct substitution. Both feature 200Ohm on-state resistance (4x higher than DG201HSDY) and significantly slower switching times (600ns/450ns vs. 60ns/50ns). The DG201ACSE+ and DG201ACSE+T are also limited to 0°C–70°C operating temperature, restricting use in extended temperature applications. These parts are suitable only when impedance and switching speed are not performance-critical.

Q: What is the operating temperature range for substitute parts? A: DG201HSDY-E3, ADG201HSKRZ, ADG201HSKRZ-REEL, ADG201AKRZ, ADG201AKRZ-REEL, ADG201AKRZ-REEL7, and ALD4211SCL all operate across -40°C to 85°C. DG201ACSE+, DG201ACSE+T, and DG201ADY+ operate across 0°C to 70°C and -40°C to 85°C respectively. Verify temperature range compatibility with application requirements before selection.

Q: Are all substitute parts RoHS3 compliant? A: Yes, all active substitute parts listed (DG201HSDY-E3, ADG201HSKRZ, ADG201HSKRZ-REEL, ADG201AKRZ, ADG201AKRZ-REEL, ADG201AKRZ-REEL7, ALD4211SCL, DG201ACSE+, DG201ACSE+T, and DG201ADY+) are ROHS3 compliant. The original DG201HSDY is RoHS non-compliant, making compliance upgrade a key benefit of substitution.

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