db9-usb Future Technology Devices International Ltd., db9-usb Datasheet - Page 19

• Manufacturer Part Number: db9-usb
• Description: The Db9-usb Family Of Usb To Uart Converter Modules
• Manufacturer: Future Technology Devices International Ltd.

5
5.1
5.2
5.3
5.4
Electrical details
Parameter
Parameter
Parameter
Parameter
USB_VCC
USB
RS232 Level UART
3.3V Level UART
5V Level UART
Vtrans
Vrec
Voh
Voh
Icc
Vol
Vin
Vol
Vin
Receiver input voltage
Input Power Voltage*
Output Voltage High
Output Voltage High
Output Voltage Low
Output Voltage Low
Transmitter output
Input Switching
Input Switching
voltage swing
Copyright © 2011 Future Technology Devices International Limited
USB current
Description
Description
Description
Description
Threshold
Threshold
ESD HBM
range
Table 5.3 – 3.3V Level UART Electrical Details
Table 5.4 – 5V Level UART Electrical Details
Table 5.2 – RS232 Electrical Details
Table 5.1 – USB Electrical Details
Minimum
Minimum
Minimum
Minimum
±2.4
4.25
± 5
2.2
0.3
1.0
3.2
0.3
1.0
Typical
Typical
Typical
Typical
5.0*
±15
2.7
0.4
1.2
4.1
0.4
1.2
30
Maximum
Maximum
Maximum
Maximum
5.25
±25
3.2
0.5
1.5
4.9
0.6
1.5
50
Document Reference No.: FT_000204
Units
Units
Units
Units
mA
KV
V
V
V
V
V
V
V
V
V
Input resistance = 3KΩ
cable is attached and
*Present when USB
RS-232 Inputs and
Clearance No.: FTDI# 130
USB Host or Hub
I source = 1mA
I source = 2mA
I sink = 2mA
I sink = 2mA
Conditions
Conditions
Conditions
Conditions
RL = 3KΩ
powered.
Outputs
to 7KΩ
DB9-USB Datasheet
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Version 2.1
18