DG409DYZ Equivalent & Substitute Parts

Part Overview

The DG409DYZ is a 2-circuit SP4T analog switch IC manufactured by Renesas Electronics Corporation, configured as a 4:1 multiplexer/demultiplexer with 100Ohm on-state resistance. The device operates across a wide supply voltage range (5V to 34V single supply, or ±5V to ±20V dual supply) and is housed in a 16-SOIC surface mount package. The part is currently active in production and RoHS3 compliant. Equivalent and substitute parts are identified based on matching circuit topology, package form factor, and electrical performance within acceptable parameter tolerances for analog switching applications.

Key Parameters

Parameter	DG409DYZ
Switch Circuit	SP4T
Multiplexer/Demultiplexer Circuit	4:1
Number of Circuits	2
On-State Resistance (Max)	100Ohm
Channel-to-Channel Matching (ΔRon)	15Ohm (Max)
Voltage - Supply, Single (V+)	5V ~ 34V
Voltage - Supply, Dual (V±)	±5V ~ 20V
Switch Time (Ton, Toff) (Max)	150ns, 150ns
Charge Injection	20pC
Channel Capacitance (CS(off), CD(off))	3pF, 14pF
Current - Leakage (IS(off)) (Max)	500pA
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)

Substitute Part Grouping Explanation

Substitution eligibility for the DG409DYZ is determined by the following critical parameters:

Primary Matching Criteria:

Switch circuit topology: SP4T (single-pole, four-throw)
Multiplexer configuration: 4:1
Number of circuits: 2
Package form factor: 16-SOIC surface mount
On-state resistance: 100Ohm nominal (±15Ohm matching tolerance acceptable)

Secondary Compatibility Factors:

Supply voltage range must encompass or overlap the application requirements
Operating temperature range must meet or exceed the intended use case
Leakage current and charge injection must not degrade signal integrity in the target application
RoHS and regulatory compliance status must match or exceed the original part

Substitute parts are grouped into two categories: direct equivalents (100Ohm on-state resistance) and functional alternatives (higher on-state resistance with acceptable performance trade-offs for specific applications).

Parameter Comparison

Part Number	Manufacturer	On-State Resistance (Max)	ΔRon (Max)	V+ Range	V± Range	Ton/Toff (Max)	Charge Injection	IS(off) (Max)	Operating Temp	Package	RoHS Status
DG409DYZ	Renesas Electronics	100Ohm	15Ohm	5V ~ 34V	±5V ~ 20V	150ns, 150ns	20pC	500pA	-40°C ~ 85°C	16-SOIC	ROHS3
ADG409BRZ	Analog Devices Inc.	100Ohm	15Ohm	12V	±15V	—	20pC	500pA	-40°C ~ 85°C	16-SOIC	ROHS3
ADG409BRZ-REEL	Analog Devices Inc.	100Ohm	15Ohm	12V	±15V	—	20pC	500pA	-40°C ~ 85°C	16-SOIC	ROHS3
ADG409BRZ-REEL7	Analog Devices Inc.	100Ohm	15Ohm	12V	±15V	—	20pC	500pA	-40°C ~ 85°C	16-SOIC	ROHS3
DG409CY+	Analog Devices Inc./Maxim Integrated	100Ohm	1.5Ohm	5V ~ 30V	±5V ~ 20V	150ns, 150ns	2pC	500pA	0°C ~ 70°C	16-SOIC	ROHS3
DG409DY+	Analog Devices Inc./Maxim Integrated	100Ohm	1.5Ohm	5V ~ 30V	±5V ~ 20V	150ns, 150ns	2pC	500pA	-40°C ~ 85°C	16-SOIC	ROHS3
DG409DY+T	Analog Devices Inc./Maxim Integrated	100Ohm	1.5Ohm	5V ~ 30V	±5V ~ 20V	150ns, 150ns	2pC	500pA	-40°C ~ 85°C	16-SOIC	ROHS3
DG409DY-E3	Vishay Siliconix	100Ohm	15Ohm	5V ~ 36V	±5V ~ 20V	150ns, 150ns	20pC	500pA	-40°C ~ 85°C	16-SOIC	ROHS3
ADG1209YRZ	Analog Devices Inc.	200Ohm	4.6Ohm	5V ~ 16.5V	±5V ~ 16.5V	95ns, 100ns	0.4pC	100pA	-40°C ~ 125°C	16-SOIC	ROHS3
ADG1209YRZ-REEL7	Analog Devices Inc.	200Ohm	4.6Ohm	5V ~ 16.5V	±5V ~ 16.5V	95ns, 100ns	0.4pC	100pA	-40°C ~ 125°C	16-SOIC	ROHS3
ADG1309BRZ-REEL7	Analog Devices Inc.	210Ohm	5Ohm	5V ~ 16.5V	±5V ~ 16.5V	100ns, 100ns	2pC	1nA	-40°C ~ 105°C	16-SOIC	ROHS3

Engineering Selection Recommendations

Direct Equivalents (100Ohm On-State Resistance):

The DG409DY+, DG409DY+T, and DG409DY-E3 are direct functional equivalents to the DG409DYZ. All three maintain 100Ohm on-state resistance, identical switch timing, and 16-SOIC packaging. The DG409DY+ and DG409DY+T offer superior channel-to-channel matching (1.5Ohm vs. 15Ohm) and lower charge injection (2pC vs. 20pC), making them suitable for precision analog signal routing applications. The DG409DY-E3 provides the widest single-supply voltage range (5V to 36V) while maintaining the original 15Ohm matching specification. All three are RoHS3 compliant and active products.

The ADG409BRZ, ADG409BRZ-REEL, and ADG409BRZ-REEL7 from Analog Devices are functionally equivalent with identical on-state resistance and matching specifications. These parts operate at fixed supply voltages (12V single, ±15V dual) rather than the wide-range capability of the DG409DYZ, limiting their applicability to fixed-supply designs. All are RoHS3 compliant and in active production.

Functional Alternatives (Higher On-State Resistance):

The ADG1209YRZ and ADG1209YRZ-REEL7 feature 200Ohm on-state resistance with superior channel-to-channel matching (4.6Ohm) and significantly lower charge injection (0.4pC). These parts are suitable for applications where higher on-state resistance is acceptable and lower signal distortion is prioritized. Operating temperature range extends to 125°C. Moisture sensitivity is improved (MSL 1 vs. MSL 2).

The ADG1309BRZ-REEL7 offers 210Ohm on-state resistance with 5Ohm matching tolerance and 2pC charge injection. Operating temperature range is -40°C to 105°C. This part is suitable for applications requiring moderate on-state resistance with improved leakage current performance (1nA vs. 500pA).

All substitute parts maintain RoHS3 compliance and 16-SOIC surface mount packaging, ensuring mechanical and regulatory compatibility with the original DG409DYZ design.

Frequently Asked Questions (FAQ)

Q: Can I substitute the DG409DYZ with a part having higher on-state resistance?

A: Yes, if your application tolerates increased on-state resistance. The ADG1209YRZ (200Ohm) and ADG1309BRZ-REEL7 (210Ohm) are functionally compatible alternatives. Higher on-state resistance increases signal attenuation and power dissipation; verify that your circuit design accommodates these changes.

Q: What is the difference between DG409DY+ and DG409DY+T packaging?

A: DG409DY+ is supplied in Tube packaging, while DG409DY+T is supplied in Cut Tape (CT) & Digi-Reel format. Both parts are electrically identical; packaging selection depends on your assembly process and volume requirements.

Q: Are the ADG409BRZ variants compatible with the DG409DYZ in all applications?

A: The ADG409BRZ variants have restricted supply voltage ranges (12V single, ±15V dual) compared to the DG409DYZ (5V to 34V single, ±5V to ±20V dual). They are compatible only in applications using these fixed supply voltages. Verify your circuit's supply voltage requirements before substitution.

Q: Which substitute part offers the best signal integrity?

A: The DG409DY+ and DG409DY+T offer the lowest charge injection (2pC vs. 20pC) and superior channel-to-channel matching (1.5Ohm vs. 15Ohm), making them optimal for precision analog signal routing where signal distortion must be minimized.

Q: Is the DG409DY-E3 a direct replacement for the DG409DYZ?

A: Yes. The DG409DY-E3 is a direct replacement with identical on-state resistance (100Ohm), matching tolerance (15Ohm), and operating temperature range (-40°C to 85°C). It provides an extended single-supply voltage range (5V to 36V) compared to the DG409DYZ (5V to 34V).

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

A: The DG409DYZ has MSL 2 (1 Year shelf life), while most substitutes have MSL 1 (Unlimited shelf life). MSL 1 parts require less stringent moisture control during storage and handling, reducing the risk of moisture-induced failures during assembly.

Q: Can I use ADG1209YRZ in a high-temperature application?

A: Yes. The ADG1209YRZ operates to 125°C, exceeding the DG409DYZ specification of 85°C. However, verify that the 200Ohm on-state resistance is acceptable for your circuit design, as it will increase signal attenuation compared to the 100Ohm original part.

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