USB-COM422-PLUS2 FTDI, USB-COM422-PLUS2 Datasheet - Page 14

• Manufacturer Part Number: USB-COM422-PLUS2
• Description: Interface Modules & Development Tools USB HS to RS422 Conv Assembly 2 DB9 Ports
• Manufacturer: FTDI

Specifications of USB-COM422-PLUS2

• Interface Type: USB, RS-422
• Data Bus Width: Serial
• Operating Supply Voltage: 5 V
• Product: Interface Modules
• For Use With/related Products: FT2232H
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: USB-COM422-PLUS-2

3
3.1
3.1.1 USB
The USB-COM422-PLUS2 is a downstream USB 2.0 Device. A standard USB mini type “B” receptacle is
mounted inside the USB-F-1001 to facilitate connection to an upstream USB Host or Hub.
Table 3.1 – USB mini type "B" Receptacle Pin-Out
3.1.2 RS422
Both RS422 ports are configured as Data Terminal Equipment (DTE), with a 9-contact D-Sub Pin
connector. Pin assignments are according to TIA/EIA-422. Both Connectors are the same pin-out.
Table 3.2 – DE-9P RS422 Pin-Out
Pin Number
Pin Number
Connections
Shield
External Connectors
1
2
3
4
5
1
2
3
4
5
6
7
8
9
Case Ground
Bidirectional
Bidirectional
Pin Type
Pin Type
Ground
Ground
Output
Output
Output
Output
Power
Input
Input
Input
Input
ID
Copyright © 2010 Future Technology Devices International Limited
Description
VBUS = USB Power provided from upstream USB Host or Hub
D– = USB data signal, negative polarity
D+ = USB data signal, positive polarity
No connected
GND = USB signal ground
Drain = typically connected to the host PC case
Description
TXD- = Transmit Data, negative polarity
TXD+ = Transmit Data, positive polarity
RXD+ = Receive Data, positive polarity
RXD- = Receive Data, negative polarity
GND = signal ground
RTS- = Request To Send, negative polarity
RTS+ = Request To Send, positive polarity
CTS+ = Clear To Send, positive polarity
CTS- = Clear To Send, negative polarity
Document Reference No.: FT_000135
USB-COM422-PLUS2 Datasheet
Clearance No.: FTDI#103
Version 1.1
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