DG419LDY+ Equivalent & Substitute Parts

Part Overview

The DG419LDY+ is a single-circuit SPDT (Single Pole Double Throw) analog switch manufactured by Analog Devices Inc./Maxim Integrated. This interface component operates as a 2:1 multiplexer/demultiplexer with 35Ohm on-state resistance in an 8-SOIC surface mount package. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Alternative equivalent parts are identified based on matching electrical characteristics, package specifications, and operational parameters to ensure direct functional replacement in circuit applications.

Key Parameters

Parameter	Value
Switch Circuit Type	SPDT
Multiplexer/Demultiplexer Configuration	2:1
Number of Circuits	1
On-State Resistance (Max)	35Ohm
Channel-to-Channel Matching (ΔRon)	100mOhm
Voltage - Supply, Single (V+)	9V ~ 36V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V
Charge Injection	15pC
Channel Capacitance (CS(off), CD(off))	8pF, 8pF
Current - Leakage (IS(off)) (Max)	250pA
Crosstalk	-86dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the DG419LDY+ is determined by strict equivalence across the following critical parameters:

Switch circuit topology (SPDT configuration)
Multiplexer function (2:1 ratio)
Single-circuit design
On-state resistance specification (35Ohm maximum)
Channel-to-channel matching tolerance (100mOhm)
Supply voltage ranges (single and dual supply options)
Charge injection and capacitance characteristics
Leakage current specifications
Crosstalk performance at 1MHz
Operating temperature range (-40°C to 85°C)
8-SOIC surface mount package footprint
RoHS3 compliance status
MSL rating (Level 1)

Only components matching all specified parameters across electrical performance, package dimensions, and compliance certifications qualify as direct equivalents.

Parameter Comparison

Parameter	DG419LDY+ (Main Part)	DG419LDY+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Switch Circuit	SPDT	SPDT
Multiplexer/Demultiplexer Circuit	2:1	2:1
Number of Circuits	1	1
On-State Resistance (Max)	35Ohm	35Ohm
Channel-to-Channel Matching (ΔRon)	100mOhm	100mOhm
Voltage - Supply, Single (V+)	9V ~ 36V	9V ~ 36V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V	±4.5V ~ 20V
Charge Injection	15pC	15pC
Channel Capacitance (CS(off), CD(off))	8pF, 8pF	8pF, 8pF
Current - Leakage (IS(off)) (Max)	250pA	250pA
Crosstalk	-86dB @ 1MHz	-86dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active

Engineering Selection Recommendations

The DG419LDY+ maintains Active product status with full RoHS3 compliance and REACH unaffected classification. Component selection should prioritize parts with identical Active status to ensure long-term availability and manufacturing consistency. All substitute candidates must maintain ROHS3 Compliant certification and MSL Level 1 rating to satisfy environmental and handling requirements. Surface mount 8-SOIC package compatibility is mandatory for direct PCB replacement without layout modifications. Electrical parameter matching across all specified ranges ensures functional equivalence in both single-supply (9V to 36V) and dual-supply (±4.5V to ±20V) configurations.

Frequently Asked Questions (FAQ)

Q: What defines a valid substitute for the DG419LDY+?

A: A valid substitute must match all electrical specifications including SPDT switch topology, 2:1 multiplexer configuration, 35Ohm on-state resistance, 100mOhm channel matching, supply voltage ranges, charge injection (15pC), channel capacitance (8pF each), leakage current (250pA max), crosstalk (-86dB @ 1MHz), and operating temperature range (-40°C to 85°C). The package must be 8-SOIC surface mount with identical footprint dimensions. RoHS3 compliance and MSL Level 1 rating are required.

Q: Can the DG419LDY+ be replaced with a different package type?

A: No. The 8-SOIC (0.154", 3.90mm Width) surface mount package is a critical specification. Alternative package types would require PCB layout redesign and are not considered direct substitutes.

Q: Are there supply voltage flexibility options for substitutes?

A: No. Substitute parts must support both single-supply operation (9V to 36V) and dual-supply operation (±4.5V to ±20V) as specified. Parts with reduced voltage ranges are not acceptable equivalents.

Q: What is the significance of the 100mOhm channel-to-channel matching specification?

A: Channel-to-channel matching (ΔRon) of 100mOhm ensures consistent on-state resistance between the two switch channels. This parameter is critical for applications requiring balanced signal routing and must be matched exactly in substitute components.

Q: Does RoHS3 compliance affect substitute selection?

A: Yes. All substitute parts must maintain ROHS3 Compliant status to meet regulatory and environmental requirements. Parts with different RoHS classifications are not acceptable.

Q: Is the crosstalk specification of -86dB @ 1MHz a critical parameter for substitution?

A: Yes. Crosstalk performance directly impacts signal integrity in multiplexed applications. Substitute parts must meet or exceed the -86dB @ 1MHz specification to maintain equivalent performance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message