DG407CJ Equivalent & Substitute Parts

Part Overview

The DG407CJ is a dual 8:1 analog multiplexer/demultiplexer IC manufactured by Analog Devices Inc./Maxim Integrated. This component features two independent 8-channel switch circuits with 100Ohm on-state resistance, designed for analog signal routing and switching applications. The DG407CJ is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

DG407CJ

Analog Devices Inc./Maxim IntegratedIn Stock: 840DG407CJ Datasheet

Current PartRFQ

DG407CJ+

Analog Devices Inc./Maxim IntegratedIn Stock: 1320DG407CJ+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DG407CJ is determined by the following critical parameters:

• Multiplexer/Demultiplexer circuit configuration: 8:1
• Number of independent circuits: 2
• On-state resistance: 100Ohm maximum
• Channel-to-channel matching: 1.5Ohm maximum
• Supply voltage ranges: 5V ~ 30V (single) and ±4.5V ~ 20V (dual)
• Switch timing characteristics: 200ns (Ton), 150ns (Toff) maximum
• Charge injection: 2pC
• Channel capacitance specifications: 8pF (CS(off)), 65pF (CD(off))
• Leakage current: 500pA maximum
• Crosstalk performance: -92dB @ 100kHz
• Operating temperature range: 0°C ~ 70°C

The DG407CJ+ meets all electrical and functional parameters required for substitution. The primary difference is packaging format: the DG407CJ+ uses surface-mount technology (10-WFDFN Exposed Pad) versus the through-hole 28-DIP package of the original part. This substitution is valid when PCB layout and assembly capabilities support surface-mount components.

Parameter Comparison

Engineering Selection Recommendations

The DG407CJ+ is the active equivalent for the obsolete DG407CJ. All electrical parameters, functional specifications, and performance characteristics are identical. Selection between these parts depends on system requirements:

For through-hole PCB assemblies or legacy board designs, the DG407CJ remains available in inventory (801 pieces). However, the product status is obsolete, indicating limited future availability.

For new designs or PCB redesigns, the DG407CJ+ is the preferred selection. It maintains full electrical and functional compatibility while offering active product status and ROHS3 compliance. The surface-mount package (10-WFDFN) requires compatible PCB layout and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the DG407CJ+ directly replace the DG407CJ in existing through-hole PCB designs?

A: No. The DG407CJ+ uses surface-mount packaging (10-WFDFN Exposed Pad) while the DG407CJ uses through-hole packaging (28-DIP). PCB layout and assembly method changes are required. For through-hole designs, the DG407CJ remains the appropriate choice if inventory is available.

Q: Are the electrical specifications identical between DG407CJ and DG407CJ+?

A: Yes. Both parts share identical multiplexer circuit configuration (8:1), on-state resistance (100Ohm), supply voltage ranges, switch timing, charge injection, channel capacitance, leakage current, crosstalk performance, and operating temperature range.

Q: What is the primary advantage of selecting DG407CJ+ over DG407CJ?

A: The DG407CJ+ has active product status and ROHS3 compliance, ensuring ongoing availability and regulatory alignment. The DG407CJ is obsolete with limited future supply.

Q: Are there any performance differences between the two packages?

A: No performance differences exist. Both packages deliver identical electrical characteristics and functional performance. Package selection is determined by PCB assembly technology and design requirements.

Q: What inventory status should influence part selection?

A: The DG407CJ has 801 pieces in stock (new original), while the DG407CJ+ has 1220 pieces available. For immediate requirements, both options provide adequate inventory. For long-term projects, the DG407CJ+ active status provides supply continuity.