DB9-USB-M FTDI, DB9-USB-M Datasheet - Page 7

• Manufacturer Part Number: DB9-USB-M
• Description: USB Interface IC USB to RS232Retrofit Adapter DB9 Male
• Manufacturer: FTDI
• Type: USB DB9 Retrofitr

Specifications of DB9-USB-M

• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: Through Hole
• Operating Temperature Range: - 40 C to + 85 C
• Supply Current: 30 mA
• Operating Supply Voltage: 5 V
• Package / Case: DSUB9 Right Angle PCB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: DB9-USB-RS232-M

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DB9 connectors used for RS232 communication are either male or female type connectors.
The PC compatible accepted electrical connections for male and female RS232 DB9 connectors are
illustrated in Figure 3.1 where the structure on the left is the top view of a male RS232 DB9 connector
and the structure on the right is the top view of a Female RS232 DB9 connector.
Assuming a design follows these connection conventions, then an FTDI male or female DB9-RS232-USB
connector can be used to replace this RS232 DB9 and turn the connection into an active USB interface.
Examples and signal directions are shown in Figure 3.2 and Figure 3.3
Figure 3.1 – Male and Female DB9-USB-RS232 PCB connections (top view looking through the module)
DTE
RS232 Connections
Transceiver
RS232
DCD
DTR
TXD
RXD
DSR
CTS
RTS
RI
PCB
Copyright © 2010 Future Technology Devices International Limited
5
4
3
2
1
GND
DTR
TXD
RXD
DCD
DSR
RTS
CTS
RI
9
8
7
6
MALE
FEMALE
RTS
DSR
CTS
RI
9
8
7
6
RXD
DCD
GND
TXD
DTR
Document Reference No.: FT_000204
5
4
3
2
1
PCB
DB9-USB-RS232 Datasheet
Clearance No.: FTDI# 130
DSR
RTS
RXD
CTS
TXD
DTR
DCD
Transceiver
RI
RS232
DCE
Version 1.3
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