US232P
FTDI chip
5V output on RS232 pin 9
This USB to RS232 converter with 5V output is ideal for POS applications and other applications as many POS devices and other RS232 devices can be powered using the 5V input via their RS232 pin 9. RS232 devices that can be powered via RS232 pin 9 do not require an external power supply by using this USB to RS232 converter with 5V output.
This USB-to-RS232 serial port converter is the ideal accessory for laptop and desktop computers that do not have a COM or DB9 serial port. Supporting Windows, Mac, Linux, and Android for rapid performance, it is a convenient connectivity solution for industrial automation systems, scientific instruments, point of sale systems, and other specialized industrial and consumer applications.
US232P can supply 5V power to the RS232 device via 9th pin
The 5V power output of pin 9 of US232P comes from the USB interface. The US232P chipset itself draws about 90mA of power. Assuming that the USB port provides 500mA power to US232P, theoretically the 5V power output of pin 9 of US232P is 410mA (500mA minus the 90mA consumed by the US232P chipset itself).
Therefore, the maximum rated current of US232P is the power supply current provided by the USB interface deducting 90mA.
Furthermore, if the connected RS232 device is running with more than 500mA, the US232P short circuit protection will activate and stop working for a few seconds.
Customization for more than 500mA of 5V power output on the 9th pin, please contact us.
| Available power from USB port | The 9th pin ensured power output | Short Circuit Protection activates at | Remark |
| 500 mA | 410 mA | 750 mA ~ 1000 mA | Standard |
| 750 mA | 660 mA | 1125 mA ~ 1500 mA | Customized |
| 1100 mA | 1010 mA | 1650 mA ~ 2200 mA | Customized |
RS232 Barcode scanner is powered by US232P via 9th pin
Tx and Rx LED Indicators
Support +5V power output with Short Circuit Protection against power current exceeds 500mA.
TX and RX LED indicator
Entire USB protocol handled on the FTDI chip
Royalty-free drivers eliminate the requirement for USB driver development in most cases
UART interface support for 7 or 8 data bits, 1 or 2 stop bits and odd / even / mark / space / no parity
Fully assisted hardware or X-On / X-Off software handshaking
Data transfer rates from 300 baud to 250 kilo-baud at RS232 voltage levels
512 byte receive buffer and 512 byte transmit buffer utilising buffer smoothing technology to allow for high data throughput
Adjustable receive buffer timeout
ESD protection on RS232 I/Os exceeding ±15kV IEC 1000-4-2 Air Gap Discharge, ±15kV for Human Body Mode (HBM) and ±8kV IEC 1000-4-2 Contact Discharge
ESD protection on USB lines exceeding ±2kV for Human Body Mode (HBM), ±200V for Machine Mode (MM) and ±500V for Charged Device Mode (CDM)
Low operating and USB suspend current
Low USB bandwidth consumption
USB 2.0 Full Speed compatible
-40°C to 85°C extended operating temperature range
| OS Supported | Windows 7 / 8 / 8.1 / 10 32,64-bit Windows Vista Windows XP 32,64-bit Windows XP Embedded Windows CE.NET 4.2 , 5.0 and 6.0 MAC OS OS-X Linux 2.6.32 or later Android |
| Connector | USB : USB Type A RS232 : DB9 Male |
| Cable Length | 10 cm (3.94″) |
| Power Mode | Bus Powered |
| Operating Voltage | 5VDC |
| Power Consumption | 5V x 90mA at Max. |
| Net Weight | 30 g |
| Dimension | |
| Approvals | CE, FCC |
| RS232 Pinouts |  |
US232 US232P cable length as follows
| Cable length | Remark |
| 10 cm (4″) | Standard |
| 30 cm (11.8″) | Optional |
| 100 cm (3.28 feet) | Optional |
| 180 cm (6 feet) | Optional |
Linux VCP drivers are integrated into the kernel.
Mac OS X10.15 and macOS 11 x64 Driver FTDIUSBSerialDextInstaller 1.4.7
This is a Beta driver release and the installer should be run from the /Applications folder on your machine
