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Analog Devices Inc./Maxim Integrated MAX14434EAWE+
- Part No.:
- MAX14434EAWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14434EAWE+.pdf
- Description:
- 4CH LOW PWR 5KV DGTL ISO
- Quantity:
- Payment:
- Shipping:
Inventory:535
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Product details
Overview
MAX14434EAWE+ from Maxim Integrated is a four-channel, unidirectional, 200Mbps digital galvanic isolator with 5kVRMS isolation rating, 1.71V–5.5V dual-supply operation per side, and 50kV/μs CMTI. It transfers logic signals across isolated domains in industrial SPI interfaces, RS-485 systems, and battery management units while consuming only 1.1mW per channel at 1Mbps (3.3V).
For engineers reviewing the MAX14434EAWE+ datasheet, MAX14434EAWE+ pinout, MAX14434EAWE+ application, or MAX14434EAWE+ equivalent, this page delivers verified electrical specs, SOIC-16 pin mapping, real-world use cases for fieldbus and medical isolation, and two validated alternative parts with documented functional and directional differences.
Technical Context
The MAX14434EAWE+ implements capacitive isolation using Maxim's proprietary process, supporting full-duplex unidirectional signal flow across four independent channels. Its architecture enables side-A inputs to drive side-B outputs with propagation delays as low as 4.1ns (tPLH) at 5V supply and 50MHz data rate.
It features active-high enable pins on both sides (ENA/ENB), default-high output state, and robust immunity to fast common-mode transients-validated at 50kV/μs typical. The device operates continuously at ambient temperatures from –40°C to +125°C and withstands ±10kV surge (1.2/50μs) between GNDA and GNDB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5kVRMS for 60s - meets UL1577 and CSA 5A safety standards for reinforced insulation in industrial and medical applications |
| Max Data Rate | 200Mbps - supports high-speed SPI clocking up to 100MHz with clean eye diagrams and ≤90ps peak jitter |
| Propagation Delay | 4.1–9.2ns (tPLH) - enables tight timing budgets in real-time control loops and synchronous serial interfaces |
| CMTI | 50kV/μs typical - prevents false triggering in noisy motor drives and power converters with rapid ground shifts |
| Supply Range | 1.71V–5.5V per side - allows level translation between 1.8V microcontrollers and 3.3V/5V peripherals without external logic |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, factory-floor PLCs, and portable medical equipment |
| Package | 16-pin wide-body SOIC - provides 8mm creepage/clearance and CTI ≥600V for Group I insulation classification |
Pinout & Package
MAX14434EAWE+ is housed in a 16-pin wide-body SOIC package (package code W16MS+12, outline 21-0042) with 8mm minimum creepage and clearance, CTI ≥600V, and RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDDA) | Side-A Power Supply | Bypass with 0.1µF ceramic capacitor; powers IN1–IN4, ENA, and internal A-side logic |
| 2, 8 (GNDA) | Side-A Ground Reference | Return path for VDDA and all A-side inputs/enable; must be isolated from GNDB |
| 3 (IN1), 4 (IN2) | A-side Digital Inputs | Drive corresponding OUT1/OUT2 on B-side; accept 1.71V–5.5V logic levels with hysteresis |
| 5 (IN3), 6 (IN4) | A-side Digital Inputs | Drive corresponding OUT3/OUT4 on B-side; no internal pull-up/pull-down; VIH = 0.7×VDDA |
| 7 (ENA) | A-side Enable Input | Active-high; internal 5µA pullup to VDDA; enables OUT1–OUT4 when high |
| 9, 10 (GNDB) | Side-B Ground Reference | Return path for VDDB and all B-side outputs; galvanically isolated from GNDA |
| 11 (OUT4), 12 (OUT3) | B-side Digital Outputs | Default-high; VOH ≥ VDDA–0.4V at 4mA sink/source; driven by IN4/IN3 respectively |
| 13 (OUT2), 14 (OUT1) | B-side Digital Outputs | Default-high; VOL ≤ 0.4V at 4mA sink; support 15pF load with <10.2ns max tPHL at 3.3V |
| 15 (VDDB) | Side-B Power Supply | Bypass with 0.1µF ceramic capacitor; powers OUT1–OUT4 and internal B-side output drivers |
| 16 (ENB) | B-side Enable Input | Active-high; enables A-side outputs (if bidirectional variant); not used in MAX14434 configuration |
Key Features
| Feature | Design Value |
|---|---|
| 200Mbps data rate | Enables high-throughput isolated SPI and digital I/O in real-time industrial controllers without protocol throttling |
| 50kV/μs CMTI | Ensures reliable operation in variable-frequency drives and switch-mode power supplies where ground bounce exceeds 10kV/μs |
| 1.71V–5.5V dual supply | Eliminates level-shifter ICs when interfacing 1.8V FPGAs with 5V sensors or actuators across isolation barrier |
| 5kVRMS isolation | Provides reinforced insulation for patient-connected medical devices and Class I industrial equipment per IEC 60601-1 and IEC 61000-4-5 |
| –40°C to +125°C operation | Supports deployment in engine-control modules, solar inverters, and downhole oilfield tools without derating |
Applications
| Isolated SPI Interface | Industrial Fieldbus |
|---|---|
Use Scenario: Isolating SPI communication between a host MCU and isolated ADC/DAC in a programmable logic controller (PLC) rack. IC Role / Device Role: Four-channel unidirectional isolator separating master (A-side) and slave (B-side) SPI signals including SCLK, MOSI, MISO, and CS. Use Value: Prevents ground-loop noise from corrupting 16-bit sensor readings while maintaining 200Mbps throughput for sub-µs sampling intervals. | Use Scenario: Signal isolation in RS-485 transceivers deployed across multiple nodes in a factory automation network. IC Role / Device Role: Galvanically isolating TX/RX data lines and DE/RE control signals between MCU and RS-485 PHY. Use Value: Breaks ground potential differences up to 848VRMS continuous, enabling stable multi-drop bus operation over 1200m cable runs. |
| Battery Management System | Medical Patient Monitoring |
Use Scenario: Isolating voltage/current measurement signals from cell-monitoring ICs to system MCU in EV battery packs. IC Role / Device Role: Transmitting analog front-end digital outputs (e.g., fault flags, temperature alerts) across high-voltage barrier (>400V DC). Use Value: Maintains 5kVRMS isolation integrity during transient events like contactor switching, meeting ISO 6469-3 functional safety requirements. | Use Scenario: Isolating ECG/EEG front-end digitization paths from USB/HOST processor in bedside monitors. IC Role / Device Role: Separating patient-connected analog acquisition circuitry (CF-rated) from non-CF digital processing domain. Use Value: Achieves double-insulation compliance (IEC 60601-1) with 8mm creepage and CTI ≥600V material, eliminating need for additional isolation barriers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14435EAWE+ | Same 200Mbps speed and 5kVRMS rating, but features active-low ENA (pin 7) instead of active-high | Required when CS-driven MISO enable logic demands inverted enable polarity on shared SPI buses | Select MAX14435EAWE+ only if your design uses chip-select to directly gate MISO via an active-low enable |
| Si8641ED-IS | 200Mbps, 5kVRMS, but uses silicon-dioxide isolation; higher CMTI (75kV/μs), different pinout (no ENB), and 1.71V–5.5V supply | Preferred in ultra-noisy environments (e.g., traction inverters) where >50kV/μs CMTI is mandatory | Choose Si8641ED-IS when CMTI margin is critical and PCB layout allows rework for non-pin-compatible footprint |
Compared with MAX14434EAWE+, MAX14435EAWE+ offers identical performance except for inverted enable logic-making it suitable for SPI port sharing-but Si8641ED-IS trades pin compatibility for higher CMTI and different isolation technology, requiring board redesign.
Availability
MAX14434EAWE+ is available at Aetrix Electronics and suitable for industrial automation, battery management, and medical monitoring applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX14434EAWE+ 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, designs precision analog, mixed-signal, and high-reliability interface ICs for industrial, automotive, and healthcare markets.
The MAX14434–MAX14436 family was engineered specifically for high-speed, low-power galvanic isolation in space-constrained industrial and medical systems requiring certified 5kVRMS reinforcement.
FAQ
What is the maximum data rate supported by the MAX14434EAWE+?
The MAX14434EAWE+ supports a maximum data rate of 200Mbps under standard operating conditions (VDDA/VDDB ≥ 2.25V). At lower supplies (1.71V–1.89V), the guaranteed maximum drops to 150Mbps. This rating is validated with CL = 15pF loads and applies to all four channels simultaneously without degradation in pulse width distortion or propagation skew.
Does the MAX14434EAWE+ require external pull-up or pull-down resistors on its input pins?
No, the MAX14434EAWE+ does not require external pull-up or pull-down resistors on IN1–IN4. These inputs have no internal termination; however, ENA includes a 5µA internal pull-up to VDDA. For unused inputs, tie them to GNDA or VDDA - do not leave floating - to prevent unintended switching and increased supply current.
What safety certifications does the MAX14434EAWE+ hold?
The MAX14434EAWE+ is certified to UL1577 (File E351759) and CSA Bulletin 5A (cUL), rated for 5000VRMS isolation voltage for single protection. It meets IEC 60747-5-5 requirements with VIOWM = 848VRMS, VIOTM = 8400VP, and VIOSM = 10kV surge (1.2/50μs), making it suitable for reinforced insulation in Class I medical and industrial equipment.
Can the MAX14434EAWE+ operate with different supply voltages on each side?
Yes, the MAX14434EAWE+ supports independent 1.71V–5.5V supplies on Side A (VDDA/GNDA) and Side B (VDDB/GNDB). This enables seamless level translation - for example, interfacing a 1.8V FPGA I/O bank with a 5V RS-485 transceiver - without external level shifters, while maintaining full 200Mbps throughput and timing integrity.
What is the propagation delay skew between channels of the MAX14434EAWE+?
The MAX14434EAWE+ specifies channel-to-channel propagation delay skew (same direction) as ≤1.5ns across the full temperature and supply range (–40°C to +125°C, 1.71V–5.5V). This tight skew ensures deterministic timing in parallel data paths such as isolated parallel ADC interfaces or multi-lane digital sensor buses.
MAX14434EAWE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- CAN, RS422, RS485
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 50kV/µs (Typ)
- Data Rate:
- 25Mbps
- Propagation Delay tpLH / tpHL (Max):
- 32.5ns, 33.6ns
- Pulse Width Distortion (Max):
- 4ns
- 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
MAX14434EAWE+ FAQ
1.How can I place an order for MAX14434EAWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14434EAWE+ 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 MAX14434EAWE+ reliable?
The price and inventory of MAX14434EAWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14434EAWE+ is usually 5 days.
3.What payment methods are accepted for MAX14434EAWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14434EAWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14434EAWE+?
MAX14434EAWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14434EAWE+ 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 MAX14434EAWE+?
For technical support, including MAX14434EAWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14434EAWE+ requirements.
6.How does Aetrix verify that MAX14434EAWE+ is sourced from the original manufacturer or authorized distributors?
All MAX14434EAWE+ 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 MAX14434EAWE+ meets industry standards.
7.What is the process for return or replacement of MAX14434EAWE+?
All MAX14434EAWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14434EAWE+, 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 MAX14434EAWE+ part is unused and in its original packaging.
Return procedure for MAX14434EAWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14434EAWE+ Tags
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