DG417DK Equivalent & Substitute Parts

Part Overview

The DG417DK is an 8-circuit IC switch manufactured by Analog Devices Inc./Maxim Integrated, configured as an SPST-NC (Single Pole Single Throw - Normally Closed) multiplexer/demultiplexer with 8:1 switching capability. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and production continuity. The DG417DK operates across a wide supply voltage range and provides low on-state resistance suitable for analog signal switching applications.

Key Parameters

Parameter	Value
Switch Circuit Type	SPST - NC
Multiplexer/Demultiplexer Configuration	8:1
Number of Circuits	8
On-State Resistance (Max)	35Ohm
Channel-to-Channel Matching (ΔRon)	100mOhm
Voltage - Supply, Single (V+)	13V ~ 44V
Voltage - Supply, Dual (V±)	±7V ~ 22V
Switch Time (Ton, Toff) (Max)	175ns, 145ns
Charge Injection	3pC
Channel Capacitance (CS(off), CD(off))	8pF
Current - Leakage (IS(off)) (Max)	150nA
Crosstalk	-85dB @ 1MHz
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	8-CDIP (0.300", 7.62mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the DG417DK is constrained by the following critical parameters that define functional equivalence:

Core Electrical Parameters:

Switch circuit type (SPST - NC)
On-state resistance maximum (35Ohm)
Charge injection (3pC)
Channel capacitance (8pF)
Crosstalk performance (-85dB @ 1MHz)
Switch timing characteristics (Ton, Toff)

Supply Voltage Compatibility: The DG417DK operates with single supply (13V ~ 44V) or dual supply (±7V ~ 22V). Substitute parts must support equivalent or overlapping voltage ranges within the application's design envelope.

Environmental & Compliance Requirements:

Operating temperature range (-40°C ~ 85°C)
RoHS3 compliance
MSL rating (1 - Unlimited)

Package Considerations: The DG417DK uses through-hole 8-CDIP packaging. Substitutes may employ alternative packages (such as surface-mount SOIC) depending on board redesign feasibility and application constraints.

The DG417CY+ is identified as a manufacturer-recommended substitute based on shared base product number (DG417), identical switch circuit type, matching on-state resistance, and equivalent electrical performance characteristics.

Parameter Comparison

Parameter	DG417DK	DG417CY+	Compatibility Notes
Switch Circuit Type	SPST - NC	SPST - NC	Identical
On-State Resistance (Max)	35Ohm	35Ohm	Identical
Channel-to-Channel Matching (ΔRon)	100mOhm	3Ohm (Max)	DG417CY+ has tighter matching specification
Voltage - Supply, Single (V+)	13V ~ 44V	10V ~ 30V	DG417CY+ range is subset; verify application voltage
Voltage - Supply, Dual (V±)	±7V ~ 22V	±4.5V ~ 20V	DG417CY+ range is subset; verify application voltage
Switch Time (Ton, Toff) (Max)	175ns, 145ns	175ns, 145ns	Identical
Charge Injection	3pC	3pC	Identical
Channel Capacitance (CS(off), CD(off))	8pF	8pF, 8pF	Identical
Current - Leakage (IS(off)) (Max)	150nA	250pA	DG417CY+ has lower leakage current
Crosstalk	-85dB @ 1MHz	-85dB @ 1MHz	Identical
Operating Temperature	-40°C ~ 85°C	0°C ~ 70°C	DG417CY+ has narrower range; verify application requirements
Mounting Type	Through Hole	Surface Mount	Different package technology
Package / Case	8-CDIP (0.300", 7.62mm)	8-SOIC (0.154", 3.90mm Width)	Different form factors
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical

Engineering Selection Recommendations

Product Status Consideration: The DG417DK is classified as obsolete. The DG417CY+ is active and maintained by the manufacturer, ensuring continued availability and support for production environments.

Compliance & Certification: Both parts maintain ROHS3 compliance and MSL rating of 1 (Unlimited), satisfying regulatory and environmental requirements for equivalent applications.

Voltage Range Verification: The DG417CY+ operates within a narrower supply voltage envelope (10V ~ 30V single supply; ±4.5V ~ 20V dual supply) compared to the DG417DK (13V ~ 44V single supply; ±7V ~ 22V dual supply). Applications requiring supply voltages above 30V (single) or ±20V (dual) cannot use the DG417CY+ as a direct substitute without circuit redesign.

Temperature Range Consideration: The DG417CY+ supports 0°C ~ 70°C operating temperature, which is narrower than the DG417DK range of -40°C ~ 85°C. Applications requiring operation below 0°C or above 70°C require alternative solutions.

Package Technology: The DG417DK uses through-hole 8-CDIP packaging, while the DG417CY+ uses surface-mount 8-SOIC packaging. Board-level redesign is necessary for mechanical compatibility. Surface-mount implementation may offer improved thermal performance and reduced board space.

Electrical Performance: The DG417CY+ demonstrates superior leakage current performance (250pA vs. 150nA) and tighter channel-to-channel matching (3Ohm vs. 100mOhm), providing enhanced signal integrity in precision analog switching applications.

Frequently Asked Questions (FAQ)

Q: Can the DG417CY+ directly replace the DG417DK without circuit modifications?

A: Direct replacement depends on application constraints. The DG417CY+ is electrically compatible for core switching functions (SPST-NC, 35Ohm on-state resistance, identical switch timing). However, verify that your application's supply voltage range (10V ~ 30V single; ±4.5V ~ 20V dual) and operating temperature range (0°C ~ 70°C) fall within DG417CY+ specifications. Package differences (through-hole vs. surface-mount) require board redesign.

Q: What are the key differences between DG417DK and DG417CY+?

A: The primary differences are: (1) Product status—DG417DK is obsolete; DG417CY+ is active; (2) Supply voltage range—DG417CY+ is narrower; (3) Operating temperature—DG417CY+ is narrower; (4) Packaging—DG417DK is through-hole 8-CDIP; DG417CY+ is surface-mount 8-SOIC; (5) Leakage current—DG417CY+ is lower (250pA vs. 150nA); (6) Channel matching—DG417CY+ is tighter (3Ohm vs. 100mOhm).

Q: Is the DG417CY+ suitable for applications requiring -40°C operation?

A: No. The DG417CY+ operates from 0°C ~ 70°C. Applications requiring -40°C operation must use the DG417DK or identify alternative components with extended temperature specifications.

Q: Does the DG417CY+ support the full 44V supply voltage of the DG417DK?

A: No. The DG417CY+ maximum single supply voltage is 30V. Applications requiring 30V ~ 44V operation cannot use the DG417CY+ without circuit redesign to reduce supply voltage.

Q: What are the packaging implications of switching from DG417DK to DG417CY+?

A: The DG417DK uses through-hole 8-CDIP packaging (0.300", 7.62mm), while DG417CY+ uses surface-mount 8-SOIC packaging (0.154", 3.90mm width). PCB layout redesign is required, including footprint changes, trace routing, and via placement. Surface-mount implementation may improve thermal characteristics and reduce board area.

Q: Are both parts RoHS compliant?

A: Yes. Both DG417DK and DG417CY+ are ROHS3 compliant with MSL rating of 1 (Unlimited), meeting environmental and regulatory requirements.

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