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DG401DY+ Equivalent & Substitute Parts
Part Overview
The DG401DY+ is a 2-circuit SPST-NO (Single Pole Single Throw - Normally Open) analog switch manufactured by Analog Devices Inc./Maxim Integrated. This interface component operates as a 1:1 multiplexer/demultiplexer with 45Ohm on-state resistance and is housed in a 16-SOIC surface mount package. The device is currently in active production status with 803 units available in new original inventory. The DG401DY+ is essential for signal routing, analog multiplexing, and switching applications requiring low on-state resistance and fast switching performance in industrial, telecommunications, and instrumentation systems.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | DG401DY+ |
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Switch Circuit Type | SPST - NO |
| Number of Circuits | 2 |
| Multiplexer/Demultiplexer Configuration | 1:1 |
| On-State Resistance (Max) | 45Ohm |
| Channel-to-Channel Matching (ΔRon) | 500mOhm |
| Supply Voltage - Single (V+) | 10V ~ 30V |
| Supply Voltage - Dual (V±) | ±4.5V ~ 20V |
| Switch Time - Ton (Max) | 150ns |
| Switch Time - Toff (Max) | 100ns |
| Charge Injection | 10pC |
| Channel Capacitance - CS(off) | 12pF |
| Channel Capacitance - CD(off) | 12pF |
| Current - Leakage (IS(off)) (Max) | 500pA |
| Crosstalk | -90dB @ 1MHz |
| Operating Temperature Range | -40°C ~ 85°C (TA) |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Active |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution eligibility for the DG401DY+ is determined by strict adherence to the following electrical and mechanical parameters:
Critical Substitution Parameters:
- Switch circuit type: SPST - NO configuration
- Number of circuits: 2 circuits
- Multiplexer/demultiplexer ratio: 1:1
- On-state resistance: 45Ohm maximum
- Channel-to-channel matching: 500mOhm maximum
- Supply voltage compatibility: Single supply 10V ~ 30V or dual supply ±4.5V ~ 20V
- Switch timing: Ton ≤ 150ns, Toff ≤ 100ns
- Package type: 16-SOIC surface mount
- Operating temperature range: -40°C ~ 85°C minimum
A substitute part must match all critical parameters within the specified tolerances. Deviations in on-state resistance, switching speed, supply voltage range, circuit configuration, or package type disqualify a component from direct substitution.
Parameter Comparison
| Parameter | DG401DY+ (Main Part) | DG401DY+ (Direct Substitute) |
|---|---|---|
| Manufacturer Part Number | DG401DY+ | DG401DY+ |
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Switch Circuit Type | SPST - NO | SPST - NO |
| Number of Circuits | 2 | 2 |
| Multiplexer/Demultiplexer Configuration | 1:1 | 1:1 |
| On-State Resistance (Max) | 45Ohm | 45Ohm |
| Channel-to-Channel Matching (ΔRon) | 500mOhm | 500mOhm |
| Supply Voltage - Single (V+) | 10V ~ 30V | 10V ~ 30V |
| Supply Voltage - Dual (V±) | ±4.5V ~ 20V | ±4.5V ~ 20V |
| Switch Time - Ton (Max) | 150ns | 150ns |
| Switch Time - Toff (Max) | 100ns | 100ns |
| Charge Injection | 10pC | 10pC |
| Channel Capacitance - CS(off) | 12pF | 12pF |
| Channel Capacitance - CD(off) | 12pF | 12pF |
| Current - Leakage (IS(off)) (Max) | 500pA | 500pA |
| Crosstalk | -90dB @ 1MHz | -90dB @ 1MHz |
| Operating Temperature Range | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| Product Status | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The DG401DY+ maintains active product status with full regulatory compliance. The component is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for industrial and commercial applications. The MSL rating of 1 (Unlimited) indicates minimal moisture sensitivity, reducing handling and storage constraints during manufacturing and assembly operations.
Selection of equivalent parts must prioritize components with identical electrical specifications and 16-SOIC package compatibility to ensure direct PCB compatibility without layout modifications. Active product status ensures long-term availability and supply chain stability for production environments.
Frequently Asked Questions (FAQ)
Q: What defines a valid substitute for the DG401DY+? A: A valid substitute must match all electrical parameters including SPST-NO circuit type, 2-circuit configuration, 1:1 multiplexer ratio, 45Ohm on-state resistance, 500mOhm channel matching, supply voltage ranges (10V ~ 30V single or ±4.5V ~ 20V dual), switching times (150ns Ton, 100ns Toff), and must be packaged in 16-SOIC surface mount format with operating temperature range of -40°C ~ 85°C.
Q: Can the DG401DY+ be replaced with a different package type? A: No. The 16-SOIC package is a critical mechanical specification. Substitution with different package types (such as DIP or other SOIC variants) requires PCB redesign and is not considered a direct equivalent substitution.
Q: Are there supply voltage compatibility considerations for substitution? A: Yes. The DG401DY+ supports both single supply (10V ~ 30V) and dual supply (±4.5V ~ 20V) operation. Substitute components must support the same voltage ranges as specified in your application circuit. Deviations in supply voltage specifications disqualify a component from direct substitution.
Q: What is the significance of the 500mOhm channel-to-channel matching specification? A: Channel-to-channel matching (ΔRon) of 500mOhm maximum ensures consistent on-state resistance between the two circuits within the device. This parameter is critical for applications requiring balanced signal routing or multiplexing. Substitute parts must maintain this specification.
Q: Does the DG401DY+ meet current environmental compliance standards? A: Yes. The DG401DY+ is ROHS3 compliant and REACH unaffected, meeting current environmental regulations for electronic components in industrial and commercial applications. MSL rating of 1 (Unlimited) indicates minimal moisture sensitivity.
Q: What is the operational significance of the -90dB crosstalk specification? A: Crosstalk of -90dB @ 1MHz indicates the level of signal coupling between channels at 1MHz frequency. This specification is critical for applications requiring channel isolation in multiplexing or signal routing. Substitute components must maintain this crosstalk performance.
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