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Analog Devices Inc./Maxim Integrated DG412FDJ+
- Part No.:
- DG412FDJ+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
DG412FDJ+.pdf
- Description:
- IC SWITCH SPST-NOX4 35OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:513
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Product details
Overview
DG412FDJ+ from Maxim Integrated is a quad, single-pole/single-throw (SPST), normally open (NO) analog switch with fault protection, rail-to-rail signal handling, and ±36V fault tolerance with power applied. It operates on dual supplies (±4.5V to ±20V) or single +9V to +36V, features 35Ω max on-resistance at +25°C with ±15V supplies, and delivers 20ns typical fault response time - used in industrial signal routing and test equipment where overvoltage resilience is critical.
For engineers reviewing the DG412FDJ+ datasheet, DG412FDJ+ pinout, DG412FDJ+ application, or DG412FDJ+ equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, confirmed alternative parts with documented differences, and supply-chain support details specific to the 16-pin plastic DIP package.
Technical Context
The DG412FDJ+ implements parallel N- and P-channel MOSFETs per switch to achieve low RON and true bidirectional rail-to-rail analog conduction. Two independent comparators continuously monitor COM_, NO_, and NC_ terminals against V+ and V−, triggering immediate high-impedance isolation upon ±36V (powered) or ±40V (unpowered) overvoltage detection.
Its logic inputs accept TTL/CMOS thresholds (VIH = +2.4V, VIL = +0.8V) across ±15V or +12V supplies, and all four switches turn off automatically when V+ is unpowered - regardless of V− state - ensuring fail-safe behavior in redundant systems and avionics interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Quad SPST, normally open - enables signal path only when control input is high; no default conduction path. |
| On-Resistance (RON) | 35Ω max at +25°C with ±15V supplies - ensures minimal voltage drop and signal attenuation in precision analog paths. |
| Fault Protection | ±36V with power applied, ±40V with power off - protects downstream circuitry from transient overvoltages without external clamps. |
| Fault Response Time | 20ns typical - limits energy injection during fast transients, preserving integrity of sensitive measurement nodes. |
| Supply Range | ±4.5V to ±20V dual or +9V to +36V single - supports legacy ±15V industrial rails and modern high-voltage single-supply architectures. |
| Logic Compatibility | TTL/CMOS inputs with +0.8V / +2.4V thresholds - interoperates directly with microcontrollers and FPGAs without level-shifting. |
| Off-Leakage Current | ±20nA max at +25°C - prevents loading of high-impedance sensors or reference sources in data acquisition front-ends. |
Pinout & Package
Package: 16-pin plastic DIP (0.300" wide), through-hole mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 16 | IN1–IN4 | Digital control inputs; active-high logic turns corresponding NO switch ON. |
| 2, 7, 10, 15 | COM1–COM4 | Common analog terminals - connected to NOx when switch is ON; isolated during fault or OFF state. |
| 3, 6, 11, 14 | NO1–NO4 | Normally open analog terminals - conduct to COMx only when INx = high; fault-protected up to ±40V. |
| 4 | V− | Negative supply rail; tied to GND for single-supply operation; requires 0.1µF bypass to GND. |
| 5 | GND | Digital ground reference for logic inputs and internal translators; not galvanically tied to analog paths. |
| 12 | N.C. | No internal connection - must remain unconnected on PCB. |
| 13 | V+ | Positive supply rail; powers internal logic and gate drivers; requires 0.1µF bypass to GND. |
Key Features
| Feature | Design Value |
|---|---|
| No power-supply sequencing required | V+ and V− may be powered in any order - eliminates startup timing constraints in multi-rail systems. |
| Rail-to-rail signal handling | Analog signals from V− to V+ pass unattenuated - preserves full dynamic range in ±15V or +12V data paths. |
| All switches off with power off | Guaranteed open-circuit state when V+ is removed - prevents unintended signal leakage in standby or fault conditions. |
| Pin-compatible with DG412 | Direct drop-in replacement for legacy non-fault-protected DG412 - no PCB redesign needed for reliability upgrades. |
| 20ns fault response time | Isolates overvoltage within one RF cycle at ~50MHz - critical for protecting ADC inputs and sensor amplifiers. |
Applications
| Industrial Signal Routing | Automated Test Equipment (ATE) |
|---|---|
|
Use Scenario: Multiplexing sensor outputs (thermocouples, strain gauges) into a shared ADC channel under varying EMI and transient conditions. IC Role / Device Role / Timing Role: Fault-protected analog switch isolating each sensor path; ensures continuity during ±36V surges without latch-up or damage. Use Value: Eliminates need for external TVS diodes and series resistors per channel, reducing BOM count and board area by >30%. |
Use Scenario: Reconfigurable stimulus/sense paths in semiconductor parametric testers where DUT voltage excursions exceed supply rails. IC Role / Device Role / Timing Role: High-speed, fault-tolerant signal routing element enabling safe switching between calibration references and device pins. Use Value: 20ns fault trip time prevents destructive energy transfer during probe contact bounce or clamp failures. |
| Avionics Redundancy Switching | Process Control I/O Modules |
|
Use Scenario: Selecting between primary and backup flight control signals in fly-by-wire interface units operating on ±28V aircraft buses. IC Role / Device Role / Timing Role: Fail-safe NO switch that defaults open on loss of V+, preventing erroneous actuator commands during power faults. Use Value: Meets DO-160 Section 22 induced transient immunity requirements without supplemental protection circuitry. |
Use Scenario: Isolating 4–20mA current loop inputs in PLC analog input cards exposed to field wiring faults and lightning-induced surges. IC Role / Device Role / Timing Role: Input-stage analog switch providing ±40V fault protection with power removed - survives brownout events while maintaining isolation. Use Value: Enables hot-swap capability and extends mean time between failures (MTBF) in harsh industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4712ESE+ | Same pinout, identical fault protection (±40V off, ±36V on), but optimized for +3V/+5V single-supply operation; RON = 60Ω max at +5V. | Better suited for battery-powered portable instruments; less suitable for ±15V industrial backplanes. | Select MAX4712ESE+ when migrating to low-voltage digital control while retaining fault resilience. |
| ADG1412BRUZ | Quad SPST NO, ±15V rated, 1.8Ω RON, but no fault protection; 16-lead TSSOP only - not pin-compatible with DG412FDJ+ DIP. | Used where ultra-low on-resistance dominates over fault tolerance; requires PCB redesign and external protection. | Choose ADG1412BRUZ only if system-level fault protection is already implemented externally and layout allows TSSOP rework. |
Compared with MAX4712ESE+ and ADG1412BRUZ, DG412FDJ+ uniquely balances robust ±36V fault protection, DIP package compatibility with legacy designs, and proven performance across ±15V and +12V industrial rails - making it the optimal choice for reliability-critical retrofits and new ruggedized instrumentation.
Availability
DG412FDJ+ is available at Aetrix Electronics and suitable for industrial signal routing, automated test equipment, avionics redundancy switching, and process control I/O modules requiring stable component supply and long-term obsolescence management.
Supply support for DG412FDJ+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The DG412FDJ+ belongs to Maxim's fault-protected analog switch family, designed specifically for mission-critical signal routing in environments where voltage transients, wiring faults, and power interruptions demand intrinsic hardware-level resilience.
FAQ
What is the maximum fault voltage the DG412FDJ+ can withstand with power applied?
The DG412FDJ+ sustains ±36V overvoltage on any COM_, NO_, or NC_ terminal with power applied - verified per Absolute Maximum Ratings and functional testing. This applies to both positive and negative faults relative to GND, and is guaranteed across the full −40°C to +85°C operating temperature range. Exceeding ±36V risks permanent damage, even momentarily.
Does the DG412FDJ+ require power-supply sequencing during startup?
No - the DG412FDJ+ does not require power-supply sequencing. V+ and V− may be powered in any order, including simultaneous ramp-up or staggered application. Internal logic translators and fault comparators function correctly regardless of supply ramp sequence, eliminating startup timing constraints in complex multi-rail systems.
Can the DG412FDJ+ operate from a single +12V supply?
Yes - the DG412FDJ+ supports single-supply operation from +9V to +36V. For +12V use, connect V− to GND, bypass V+ and GND with 0.1µF capacitors, and ensure logic inputs meet VIH ≥ +2.4V and VIL ≤ +0.8V. On-resistance increases to 56Ω max at +25°C, and fault protection remains ±36V (powered) / ±40V (unpowered).
What happens to the DG412FDJ+ switches when V+ is removed but V− remains connected?
When V+ is removed, all four DG412FDJ+ switches turn OFF regardless of V− state or logic input levels. The COM_, NO_, and NC_ terminals enter high-impedance isolation mode, maintaining ±40V fault protection even with V− active. This fail-safe behavior prevents unintended signal coupling during partial power loss scenarios.
Is the DG412FDJ+ pin-compatible with the legacy DG412 non-fault-protected switch?
Yes - the DG412FDJ+ has identical pinout, footprint, and electrical interface to the industry-standard DG412. All IN_, COM_, NO_, V+, V−, GND, and N.C. assignments match exactly. This enables direct replacement in existing PCBs without layout changes, delivering enhanced fault resilience without redesign effort.
DG412FDJ+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 200mOhm
- Voltage - Supply, Single (V+):
- 9V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 175ns, 145ns
- -3db Bandwidth:
- -
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 15pF, 15pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -105dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
DG412FDJ+ FAQ
1.How can I place an order for DG412FDJ+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG412FDJ+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DG412FDJ+ reliable?
The price and inventory of DG412FDJ+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG412FDJ+ is usually 5 days.
3.What payment methods are accepted for DG412FDJ+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG412FDJ+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG412FDJ+?
DG412FDJ+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG412FDJ+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DG412FDJ+?
For technical support, including DG412FDJ+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG412FDJ+ requirements.
6.How does Aetrix verify that DG412FDJ+ is sourced from the original manufacturer or authorized distributors?
All DG412FDJ+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DG412FDJ+ meets industry standards.
7.What is the process for return or replacement of DG412FDJ+?
All DG412FDJ+ units undergo pre-shipment inspection (PSI). If there is an issue with DG412FDJ+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DG412FDJ+ part is unused and in its original packaging.
Return procedure for DG412FDJ+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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