DG309CJ Equivalent & Substitute Parts Reference

Part Overview

The Vishay Siliconix DG309CJ is an IC switch in the interface category, featuring a SPST - NC switch circuit with 4 independent channels, offered in a 16-PDIP through hole package. This product is obsolete, making it necessary to identify alternate models for design continuity and replacement in applications that require the same electrical and mechanical characteristics.

Key Parameters

Parameter	DG309CJ Value
Manufacturer	Vishay Siliconix
Switch Circuit	SPST - NC
Multiplexer/Demultiplexer Circuit	1:1
Number of Circuits	4
On-State Resistance (Max)	85 Ohm
Channel-to-Channel Matching (ΔRon)	1.7 Ohm
Voltage - Supply, Single (V+)	4V ~ 44V
Voltage - Supply, Dual (V±)	±4V ~ 22V
Switch Time (Ton, Toff) (Max)	200ns, 150ns
Charge Injection	1pC
Channel Capacitance (CS(off), CD(off))	5pF, 5pF
Current - Leakage (IS(off)) (Max)	500pA
Crosstalk	-95dB @ 100kHz
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Through Hole
Package / Case	16-DIP (0.300", 7.62mm)
Supplier Device Package	16-PDIP
RoHS Status	RoHS non-compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution logic is based strictly on the following electrical and mechanical parameters: switch circuit type, number of circuits, channel configuration, on-state resistance, power supply ranges, switching speed, operating temperature, channel capacitance, leakage current, package type, and mounting. Only substitute parts matching or appropriately aligning with these key parameters are listed in this reference.

Parameter Comparison

Part Number	Manufacturer	Switch Circuit	Multiplexer/Demultiplexer Circuit	Number of Circuits	On-State Resistance (Max)	Channel-to-Channel Matching (ΔRon)	Voltage - Supply, Single (V+)	Voltage - Supply, Dual (V±)	Switch Time (Ton, Toff) (Max)	Charge Injection	Channel Capacitance (CS(off), CD(off))	Current - Leakage (IS(off)) (Max)	Crosstalk	Operating Temp.	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Product Status
DG309CJ	Vishay Siliconix	SPST - NC	1:1	4	85 Ohm	1.7 Ohm	4V ~ 44V	±4V ~ 22V	200ns, 150ns	1pC	5pF, 5pF	500pA	-95dB @ 100kHz	-40°C ~ 85°C	Through Hole	16-DIP (0.300", 7.62mm)	16-PDIP	RoHS non-compliant	Obsolete
DG309BDJ-E3	Vishay Siliconix	SPST - NC	1:1	4	85 Ohm	1.7 Ohm	4V ~ 44V	±4V ~ 22V	200ns, 150ns	1pC	5pF, 5pF	500pA	-95dB @ 100kHz	-40°C ~ 85°C	Through Hole	16-DIP (0.300", 7.62mm)	16-PDIP	ROHS3 Compliant	Active
DG309CJ-E3	Vishay Siliconix	SPST - NC	1:1	4	85 Ohm	1.7 Ohm	4V ~ 44V	±4V ~ 22V	200ns, 150ns	1pC	5pF, 5pF	500pA	-95dB @ 100kHz	-40°C ~ 85°C	Through Hole	16-DIP (0.300", 7.62mm)	16-PDIP	ROHS3 Compliant	Active
ALD4211PCL	Advanced Linear Devices Inc.	SPST - NC	1:1	4	135 Ohm	2.7 Ohm	3V ~ 12V	±1.5V ~ 6V	130ns, 130ns	0.2pC	3pF, 3pF	100pA	-90dB @ 100kHz	-40°C ~ 85°C	Through Hole	16-DIP (0.300", 7.62mm)	16-PDIP	ROHS3 Compliant	Active
DG309CJ+	Analog Devices Inc./Maxim Integrated	SPST - NC	1:1	4	100 Ohm	-	5V ~ 30V	±5V ~ 20V	250ns, 150ns	-10pC	11pF, 8pF	5nA	-	0°C ~ 70°C	Through Hole	16-DIP (0.300", 7.62mm)	16-PDIP	ROHS3 Compliant	Active
MAX4511CPE+	Analog Devices Inc./Maxim Integrated	SPST - NC	1:1	4	160 Ohm	-	9V ~ 36V	±4.5V ~ 18V	500ns, 400ns	1.5pC	10pF, 5pF	500pA	-66dB @ 1MHz	0°C ~ 70°C	Through Hole	16-DIP (0.300", 7.62mm)	16-PDIP	ROHS3 Compliant	Obsolete

Engineering Selection Recommendations

For replacement and substitution, preference is given to active status parts with matching electrical and mechanical parameters to those of DG309CJ. RoHS3 compliant substitutes such as DG309BDJ-E3 and DG309CJ-E3 align closely with original specifications, and offer enhanced compliance for environmental and regulatory requirements. All listed substitutes use the same 16-PDIP through hole package and maintain the specified operating temperature range. Obsolete alternatives such as MAX4511CPE+ should only be considered where required by legacy designs.

Frequently Asked Questions (FAQ)

Q: What are the critical substitution criteria for DG309CJ?
A: The substitution criteria include switch circuit configuration (SPST - NC), number of switch circuits (4), channel configuration (1:1), on-state resistance, supply voltage range, switching time, leakage current, channel capacitance, operating temperature, and package type (16-PDIP, through hole).

Q: How important is package compatibility for substitution?
A: Package compatibility is essential to ensure proper fit on existing PCBs and maintain the integrity of mechanical assembly. All listed substitutes use the 16-DIP (0.300", 7.62mm) through hole package.

Q: Does RoHS compliance affect substitute selection?
A: RoHS compliance is a key consideration for environmental and regulatory requirements. Where possible, selecting a RoHS3 compliant part (e.g., DG309BDJ-E3 or DG309CJ-E3) is preferable.

Q: Can substitute parts with higher or lower on-state resistance be used?
A: Selection must be based strictly on provided parameters. Minor variations in on-state resistance are presented in the table above for engineering review according to allowed specifications.

Q: Are all substitutions direct drop-in replacements?
A: Substitute suitability depends on strict adherence to the listed key parameters. Substitute parts listed here offer electrical and mechanical compatibility as provided.

Q: How do operating temperature ranges affect interchangeability?
A: All parts with an operating temperature range of -40°C ~ 85°C can be interchanged directly within this temperature range. Parts with different ranges are listed for engineering consideration.

Q: What should be considered regarding obsolete status of substitutes?
A: Obsolete substitutes should only be used when absolutely required for backwards compatibility or when inventory is available. Active status and compliant substitutes are preferred for new designs.

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