RS232/IrDA Serial-to-USB Converter - TUSB3410


RS232/IrDA Serial-to-USB Converter

Recommended alternative parts

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  • TUSB5052  -  TUSB5052 is a full-speed hub controller compound 5-port with dual USB-serial bridge

Featured Applications with TUSB3410

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Blood Pressure Monitor
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CT Scanner
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ECG Electrocardiogram
  • This monitoring system uses Korotkoff,oscillometry or pulse transit time
  • Digital pressure measurement and heart rate are performed by the microcontroller. Measurement results are stored in flash memory as a data log that can be uploaded to a computer via USB or wireless connection
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  • Single-chip solutions for directly digitizing low-level currents from photodiode arrays in CT scanners
  • Reduce components and board size by 95%
  • Application using single-chip solution increases system reliability and patient mobility


The TUSB3410 provides bridging between a USB port and an enhanced UART serial port. The TUSB3410 contains all the necessary logic to communicate with the host computer using the USB bus. It contains an 8052 microcontroller unit (MCU) with 16K bytes of RAM that can be loaded from the host or from the external on-board memory via an I2C bus. It also contains 10K bytes of ROM that allow the MCU to configure the USB port at boot time. The ROM code also contains an I2C boot loader. All device functions, such as the USB command decoding, UART setup, and error reporting, are managed by the internal MCU firmware under the auspices of the PC host.

The TUSB3410 can be used to build an interface between a legacy serial peripheral device and a PC with USB ports, such as a legacy-free PC. Once configured, data flows from the host to the TUSB3410 via USB OUT commands and then out from the TUSB3410 on the SOUT line. Conversely, data flows into the TUSB3410 on the SIN line and then into the host via USB IN commands.


  • USB Features
    • Fully compliant with USB 2.0 full speed specifications: TID #40340262
    • Supports 12-Mbps USB data rate (full speed)
    • Supports USB suspend, resume, and remote wakeup operations
    • Supports two power source modes:
      • Bus-powered mode
      • Self-powered mode
    • Can support a total of three input and three output (interrupt, bulk) endpoints
  • General Features
    • Integrated 8052 microcontroller with
      • 256 × 8 RAM for internal data
      • 10K × 8 ROM (with USB and I2C boot loader)
      • 16K × 8 RAM for code space loadable from host or I2C port
      • 2K × 8 shared RAM used for data buffers and endpoint descriptor blocks (EDB)
      • Four GPIO terminals from 8052 port 3
      • Master I2C controller for EEPROM device access
      • MCU operates at 24 MHz providing 2 MIPS operation
      • 128-ms watchdog timer
    • Built-in two-channel DMA controller for USB/UART bulk I/O
    • Operates from a 12-MHz crystal
    • Supports USB suspend and resume
    • Supports remote wake-up
    • Available in 32-terminal LQFP
    • 3.3-V operation with 1.8-V core operating voltage provided by on-chip
      1.8-V voltage regulator
  • Enhanced UART Features
    • Software/hardware flow control:
      • Programmable Xon/Xoff characters
      • Programmable Auto-RTS/DTR and Auto-CTS/DSR
    • Automatic RS-485 bus transceiver control, with and without echo
    • Selectable IrDA mode for up to 115.2 kbps transfer
    • Software selectable baud rate from 50 to 921.6 k baud
    • Programmable serial-interface characteristics
      • 5-, 6-, 7-, or 8-bit characters
      • Even, odd, or no parity-bit generation and detection
      • - 1-, 1.5-, or 2-stop bit generation
    • Line break generation and detection
    • Internal test and loop-back capabilities
    • Modem-control functions (CTS, RTS, DSR, DTR, RI, and DCD)
    • Internal diagnostics capability
      • Loopback control for communications link-fault isolation
      • Break, parity, overrun, framing-error simulation

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Parametrics Compare all products in USB Peripheral

USB Speed
Number of Endpoints IN
Number of Endpoints OUT
Supply Voltage(s) (V)
MCU Code Space (KBytes)
GPIO Pins (#)
Operating Temperature Range (C)
Approx. Price (US$)
Integrated MCU Architecture
Application Interface
Special Features
-40 to 85
0 to 70    
2.25 | 1ku    
Bulk Transfer
Control Transfer
Interrupt Transfer
Remote Wakeup    

Other qualified versions of TUSB3410

Version Part Number Definition
Automotive TUSB3410-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

Companion parts

Part # Name Product Family Comments
SN65HVD11   3.3V Differential Transceiver   INTERFACE - RS-485 Transceivers    SN65HVD11 is 10Mbps  with 3.3V that can be use with TUSB3410 in the application of USB to RS-485 industrial controls, and point of sale terminal to USB
See Literature slls505m  
TPS77301   Single Output LDO, 250mA, Adjustable(1.5 to 5.5V), Fast Transient Response, SVS   LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO    Used to generate 3.6V with a maximum output of current of 250mA
See Literature slaa276a  
TRSF3221E   3-V to 5.5-V Single-Channel RS-232 1-Mbit/s Line Driver/Receiver With +/-15-kV IEC ESD Protection   INTERFACE - RS-232 Transceivers    3-V to 5.5-V Single-Channel RS-232 1-Mbit/s Line Driver/Receiver With ±15-kV IEC ESD Protection  
TRSF3232E   3-V to 5.5-V Two-Channel RS-232 1-Mbit/s Line Driver/Receiver   INTERFACE - RS-232 Transceivers    3-V to 5.5-V Two-Channel RS-232 1-Mbit/s Line Driver/Receiver  
TRSF3238E   3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With ±15-kV ESD (HBM) Protection   INTERFACE - RS-232 Transceivers    3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With ±15-kV ESD (HBM) Protection  
TPD3E001   Low-Capacitance 3-Channel +/-15KV ESD-Protection Array for High-Speed Data Interfaces   ESD Protection Diodes - High Performance TVS Diodes    Provides IEC61000-4-2 ESD Protection to the USB Interface  
TPD2S017   2-Channel Ultra Low Clamp Voltage ESD Solution with Series-Resistor Isolation   ESD Protection Diodes - Integrated ESD Protection    Provides IEC61000-4-2 ESD Protection to the USB Interface  
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