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Analog Devices Inc./Maxim Integrated MAX14430CASE+T
- Part No.:
- MAX14430CASE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX14430CASE+T.pdf
- Description:
- 4-CHANNEL, LOW POWER, 3.75KV DIG
- Quantity:
- Payment:
- Shipping:
Inventory:1,916
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Product details
Overview
MAX14430CASE+T from Analog Devices is a 4-channel, unidirectional, high-speed digital galvanic isolator in a 16-pin narrow-body SOIC package with 3.75kVRMS isolation rating (60s), 200Mbps max data rate, and 1.71V–5.5V dual-supply operation. It enables robust signal transfer between isolated domains in industrial RS-485 interfaces and battery management systems while consuming only 1.1mW per channel at 1Mbps with 3.3V supplies.
For engineers reviewing the MAX14430CASE+T datasheet, MAX14430CASE+T pinout, MAX14430CASE+T application, or MAX14430CASE+T equivalent, this page delivers verified electrical specs, isolation safety ratings, thermal derating curves, fail-safe behavior, and side-A/side-B supply current vs. data rate characteristics - all critical for high-reliability industrial and medical isolation design.
Technical Context
The MAX14430CASE+T implements capacitive isolation using Maxim's proprietary process, supporting independent 1.71V–5.5V supplies on each side for level translation. Its architecture features active-high output enable, default-low outputs, and unidirectional channel configuration optimized for SPI and RS-485 signal isolation.
It achieves 50kV/μs common-mode transient immunity (CMTI) and guarantees propagation delay skew ≤2ns (channel-to-channel, same direction) across –40°C to +125°C. Fail-safe logic ensures outputs enter a known low state within 50μs of input power loss or open-circuit conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3.75kVRMS for 60s (narrow SOIC); enables single-protection isolation in industrial equipment meeting UL1577 and CSA 5A standards |
| Max Data Rate | 200Mbps; supports high-speed serial protocols including isolated SPI and fast RS-485 transceivers |
| Supply Range | 1.71V–5.5V per side; allows direct interfacing with 1.8V, 2.5V, 3.3V, and 5V logic domains without level shifters |
| Power @ 1Mbps | 1.1mW per channel at 3.3V; reduces thermal load in dense PCB layouts and extends battery life in portable medical devices |
| CMTI | 50kV/μs typical; prevents false triggering in noisy motor drives and factory automation environments |
| Fail-Safe Delay | 50μs; ensures deterministic output behavior during brownout or signal loss, critical for safety-critical control loops |
| Operating Temp | –40°C to +125°C ambient; qualified for under-hood automotive, industrial PLC, and battery pack monitoring applications |
Pinout & Package
Package: 16-pin narrow-body SOIC (S16MS+12), 4mm creepage/clearance, CTI ≥600 (Group I), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA | Side A primary supply | Supplies input-side logic (IN1–IN4, ENA); must be 1.71V–5.5V relative to GNDA |
| GNDA | Side A ground reference | Reference for all Side A signals; galvanically isolated from GNDB |
| IN1–IN4 | Digital inputs (Side A) | Accept CMOS-level signals; VIH = 0.7×VDDA, VIL = 0.8V (2.25V≤VDDA≤5.5V) |
| ENA | Side A output enable | Active-high; disables OUT1–OUT4 when low (high-impedance state) |
| VDDB | Side B primary supply | Supplies output-side logic (OUT1–OUT4, ENB); independent 1.71V–5.5V domain |
| GNDB | Side B ground reference | Reference for all Side B signals; galvanically isolated from GNDA |
| OUT1–OUT4 | Digital outputs (Side B) | Default-low CMOS outputs; VOH = VDDB–0.4V @ –4mA, VOL = 0.4V @ 4mA |
| ENB | Side B output enable | Active-high; controls tristate behavior of OUT1–OUT4 on Side B |
Key Features
| Feature | Design Value |
|---|---|
| 200Mbps data rate | Enables real-time isolation of high-speed serial buses like isolated SPI clock/data lines without timing bottlenecks |
| 3.75kVRMS isolation (SOIC) | Meets reinforced insulation requirements for industrial safety standards (UL1577, CSA 5A) in compact form factor |
| 50kV/μs CMTI | Prevents metastability and bit errors in electrically noisy environments such as motor drive inverters and power converters |
| Fail-safe default-low outputs | Guarantees safe system state (e.g., disable gate drivers) during power loss or open-circuit input faults |
| 1.71V–5.5V dual-supply flexibility | Eliminates external level translators when bridging mixed-voltage subsystems (e.g., 1.8V MCU ↔ 3.3V sensor interface) |
| –40°C to +125°C operation | Validated for deployment in harsh environments including battery packs, industrial controllers, and medical diagnostic equipment |
Applications
| Isolated SPI Interface | Industrial RS-485 Communication |
|---|---|
Use Scenario: Isolating SPI clock, MOSI, MISO, and CS signals between a microcontroller and isolated ADC or DAC in a high-noise PLC backplane. IC Role / Device Role / Timing Role: Four-channel unidirectional isolator with matched propagation delays (<2ns skew) preserving SPI timing integrity at up to 20MHz SCLK. Use Value: Prevents ground loop currents and noise coupling while maintaining full-duplex SPI throughput without added latency or protocol overhead. | Use Scenario: Galvanically isolating TX/RX differential pairs and control lines (DE/RE) of an RS-485 transceiver in a factory automation node. IC Role / Device Role / Timing Role: Provides bidirectional signal isolation via two independent channels (TX→bus, bus→RX) plus DE/RE control, all with <10ns propagation delay. Use Value: Enables reliable multi-drop communication over long cables in EMI-heavy environments while meeting IEC 61000-4-5 surge immunity (±10kV) requirements. |
| Battery Management Systems | Medical Isolation Interfaces |
Use Scenario: Isolating voltage/current measurement data and cell-balancing control signals between high-voltage battery stacks (400–800V) and low-voltage MCU domains. IC Role / Device Role / Timing Role: Transfers analog front-end digitized data and balancing commands across isolation barrier with fail-safe default-low outputs preventing unintended FET activation. Use Value: Ensures functional safety compliance (IEC 61508 SIL-2) by eliminating single-point failure paths and enabling certified isolation barrier integrity. | Use Scenario: Isolating patient-connected sensor signals (ECG, EEG) from main processing unit in diagnostic equipment to meet IEC 60601-1 2×MOPP requirements. IC Role / Device Role / Timing Role: Provides reinforced insulation (3.75kVRMS) with 4mm creepage/clearance and CTI >600, satisfying creepage table Group I classification for medical applications. Use Value: Achieves patient safety certification without requiring larger packages or additional isolation components, reducing board space and BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2400ARWZ | 25Mbps max data rate; 2.5kVRMS isolation (SOIC); 5V-only supply; no fail-safe default logic | Suitable for legacy industrial I/O where speed and fail-safe behavior are not required | Select when cost sensitivity outweighs need for 200Mbps or reinforced isolation; verify layout compatibility with different pinout |
| SI8640BB-B-IS | 150Mbps max data rate; 3.75kVRMS (SOIC); 2.5–5.5V supply; default-high outputs | Applicable in RS-422/RS-485 isolation where output polarity matches existing driver logic | Choose when default-high behavior aligns with system control architecture; confirm CMTI (25kV/μs) suffices for target EMI environment |
Compared with ADUM2400ARWZ and SI8640BB-B-IS, the MAX14430CASE+T delivers 8× higher data rate, guaranteed fail-safe low-state behavior on power loss, and superior CMTI - making it optimal for next-generation high-speed, safety-critical isolation where timing integrity and deterministic fault response are mandatory.
Availability
MAX14430CASE+T is available at Aetrix Electronics and suitable for industrial automation, battery management systems, and medical diagnostics requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX14430CASE+T 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The MAX14430–MAX14432 family was designed specifically for high-speed, low-power galvanic isolation in space-constrained, thermally demanding applications - emphasizing reliability, safety certification, and seamless voltage-domain bridging.
FAQ
What is the maximum data rate supported by the MAX14430CASE+T?
The MAX14430CASE+T supports a maximum data rate of 200Mbps under standard operating conditions (VDDA/VDDB ≥2.25V). At lower supply voltages (1.71V–1.89V), the guaranteed maximum drops to 150Mbps. This performance is validated across the full –40°C to +125°C temperature range and enables high-fidelity isolation of SPI, RS-485, and other fast serial interfaces without introducing timing bottlenecks in the MAX14430CASE+T signal path.
Does the MAX14430CASE+T provide fail-safe behavior on power loss?
Yes, the MAX14430CASE+T provides deterministic fail-safe behavior: when input-side power is lost or INx pins are open-circuited, outputs transition to their default-low state within 50μs. This behavior is inherent to the MAX14430CASE+T architecture and does not require external pull-down resistors, ensuring safe shutdown of downstream drivers or actuators in battery management and industrial control systems.
What isolation certifications apply to the MAX14430CASE+T?
The MAX14430CASE+T is certified to UL1577 (File E351759) and CSA Bulletin 5A (cUL), with a 3.75kVRMS withstand rating for 60 seconds in its narrow SOIC package. It meets reinforced insulation requirements for industrial and medical applications, including 445VRMS working voltage (VIOWM), ±10kV surge immunity (1.2/50μs), and CTI >600 (Group I material), all verified per IEC 60747-5-5.
Can the MAX14430CASE+T operate with mismatched supply voltages on Side A and Side B?
Yes, the MAX14430CASE+T supports independent 1.71V–5.5V supplies on Side A (VDDA/GNDA) and Side B (VDDB/GNDB), enabling true level translation. For example, it can isolate a 1.8V FPGA I/O bank (Side A) from a 3.3V RS-485 transceiver (Side B) without external level shifters - a core capability confirmed in the MAX14430CASE+T datasheet's DC Electrical Characteristics tables.
How does the MAX14430CASE+T compare to the MAX14431 and MAX14432 variants?
The MAX14430CASE+T is the 200Mbps, default-low, unidirectional variant in the MAX14430–MAX14432 family. The MAX14431 offers identical speed and isolation but with default-high outputs; the MAX14432 is a 25Mbps variant with enhanced noise immunity for cost-sensitive industrial I/O. All share the same pinout, package, and safety certifications - allowing drop-in selection based on speed and default-state requirements in the MAX14430CASE+T design context.
MAX14430CASE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- CAN, RS422, RS485, SPI
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 50kV/µs (Typ)
- Data Rate:
- 200Mbps
- Propagation Delay tpLH / tpHL (Max):
- 9.2ns, 9.4ns
- Pulse Width Distortion (Max):
- 2ns
- Rise / Fall Time (Typ):
- 1.6ns, 1.4ns (Max)
- Voltage - Supply:
- 1.71V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX14430CASE+T FAQ
1.How can I place an order for MAX14430CASE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14430CASE+T 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 MAX14430CASE+T reliable?
The price and inventory of MAX14430CASE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14430CASE+T is usually 5 days.
3.What payment methods are accepted for MAX14430CASE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14430CASE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14430CASE+T?
MAX14430CASE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14430CASE+T 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 MAX14430CASE+T?
For technical support, including MAX14430CASE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14430CASE+T requirements.
6.How does Aetrix verify that MAX14430CASE+T is sourced from the original manufacturer or authorized distributors?
All MAX14430CASE+T 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 MAX14430CASE+T meets industry standards.
7.What is the process for return or replacement of MAX14430CASE+T?
All MAX14430CASE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14430CASE+T, 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 MAX14430CASE+T part is unused and in its original packaging.
Return procedure for MAX14430CASE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14430CASE+T Tags
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