【High-Speed USB to UART Conversion】 FTDI FT232RL chip supports up to 3Mbps data transfer; 3.3V or 5V TTL level selection via jumper; compatible with standard serial communication protocols
【Robust Isolation for Safe Communication】 ADUM3201 magnetic isolation provides 1000V DC isolation between USB and TTL sides; PCB slotting design ensures creepage distance ≥8mm; protects against ground loop interference
【Integrated Power Isolation for Convenience】 Onboard B0505S isolated power supply eliminates need for external power; 5V input with ±5% tolerance; supports stable operation in industrial Settings
【Wide Temperature Range for Reliable Performance】 Operates from -40°C to +85°C; ESD protection with TVS diode; low power consumption with 1.8µA sleep mode; suitable for long-term deployment
【Easy Integration with Development Boards】 Supports for Arduino, for Raspberry Pi, and STM32 platforms; TX-D open-drain output for STC microcontroller programming; includes TX/RX LED indicators for status monitoring

Product Parameters:

Main Control Chip: FTDI FT232RL (USB to UART, USB 2.0 Full Speed 12Mbps)

Isolation Scheme: ADI ADUM3201BRZ Magnetic Isolation (10Mbps, 1000V DC Isolation)

Power Isolation: Jinshengyang B0505S-2WR2 (Input 5V, Output 5V Isolated Power)

Communication Rate: 300bps to 3Mbps (TTL Level)

Level Compatibility: 3.3V/5V TTL Selectable by Jumper

Operating Voltage: USB 5V ±5% (Input Current ≤100mA)

Isolation Gap: PCB Slot Design (Creepage ≥8mm, IEC 60950 Compliant)

Operating Temperature: -40℃ to +85℃

Data Buffer: 384B Send FIFO + 128B Receive FIFO

Protection: Integrated TVS Diode (ESD Protection ±15kV)

Pinout (Isolated End):

VCC: Isolated Power Output (3.3V/5V via jumper)

GND: Isolated Ground

TXD: Serial Data Output (to peripheral RXD)

RXD: Serial Data Input (from peripheral TXD)

TX-D: Open-Drain Output (for STC MCU burning)

FAQ:

Q: Computer doesn't recognize device?

A: Install official FTDI VCP drivers. Disable driver signature enforcement if needed.

Q: Garbled data or packet loss?

A: Ensure jumper voltage matches peripheral and baud rate is ≤3Mbps.

Q: How to verify isolation?

A: Multimeter between USB GND and isolated GND should read open (∞).

Q: TX-D not working for STC?

A: Connect to MCU's P3.1 pin and add external 4.7kΩ pull-up resistor to target VCC.

Q: Communication interruptions in noisy Settings?

A: Use shielded twisted-pair under 30cm. Add 10µF capacitor between VCC and GND on target side.

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