DB9-USB-M FTDI, Future Technology Devices International Ltd, DB9-USB-M Datasheet - Page 9

• Manufacturer Part Number: DB9-USB-M
• Description: CONN MINI USB PLUG R/A TYPE B
• Manufacturer: FTDI, Future Technology Devices International Ltd

Specifications of DB9-USB-M

• Connector Type: USB - mini B
• Number Of Contacts: 9
• Gender: Plug
• Mounting Type: Through Hole, Right Angle
• Features: D-Shaped Housing
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 768-1064

3.1.1 RS232 DB9 MALE Connector
The DB9-USB-RS232-M can be used to replace a male DB9 connector used for transmitting RS232
protocol.
Table 2.1 gives the pin out description of each pad of an RS232 footprint.
Note 1: A conflict in an DTE to DTE connection application may occur with the RI and the DCD pins. This
conflict is dependent on the application board. The user should check that the inputs and outputs match
the table above.
Number
Shield
Pin
1
2
3
4
5
6
7
8
9
USB-RS232 module
Pin Type of DB9-
Input (note1)
Input (note1)
Ground
Ground
Output
Output
Output
Copyright © 2010 Future Technology Devices International Limited
Input
Input
Input
Table 2.1 – A Male RS232 DB9 footprint Pin-Out
application PCB
Pin Type at
Case Ground
Ground
Output
Output
Output
Input
Input
Input
Input
Input
(this is an input to the DB9-USB-RS232-M
(this is an input to the DB9-USB-RS232-M
(this is an input to the DB9-USB-RS232-M
Drain = typically connected to the host PC
RS232-M to the application DSR input)
RS232-M to the application CTS input)
(this is an output from the DB9-USB-
RS232-M to the application Rx input)
(this is an output from the DB9-USB-
(this is an output from the DB9-USB-
from the application DTR output)
from the application RTS output)
from the application Tx output)
GND = RS232 signal ground
DTR = Data Terminal Ready
DCD = Data Carrier Detect
Document Reference No.: FT_000204
RTS = Request To Send
DSR = Data Set Ready
TXD = Transmit Data
CTS = Clear To Send
RXD = Receive Data
RI = Ring Indicator
Description
case
DB9-USB-RS232 Datasheet
Clearance No.: FTDI# 130
Version 1.3
8