EVAL232R Datasheet, PDF (11/18 Pages) Future Technology Devices International Ltd. – FT232RL USB to RS232 Evaluation Module

Table 10 - FT232R UART and CBUS I/O Pin Characteristics (VCCIO = 2.8V, Standard Drive Level)
Parameter Description
Min Typ Max Units Conditions
Voh
Output Voltage High
2.1
2.6
3.1
V
I source = 1mA
Vol
Output Voltage Low
0.3
0.4
0.5
V
I sink = 2mA
Vin
Input Switching Threshold
1.0
1.2
1.5
V
**
VHys
Input Switching Hysteresis
20
25
30
mV
**
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Table 11 - FT232R UART and CBUS I/O Pin Characteristics (VCCIO = 5.0V, High Drive Level)
Parameter Description
Voh
Output Voltage High
Min Typ Max Units Conditions
3.2
4.1
4.9
V
I source = 6mA
Vol
Output Voltage Low
0.3
0.4
0.6
V
I sink = 6mA
Vin
Input Switching Threshold
1.3
1.6
1.9
V
**
VHys
Input Switching Hysteresis
50
55
60
mV
**
Table 12 - FT232R UART and CBUS I/O Pin Characteristics (VCCIO = 3.3V, High Drive Level)
Parameter Description
Min Typ Max Units Conditions
Voh
Output Voltage High
2.2
2.8
3.2
V
I source = 3mA
Vol
Output Voltage Low
0.3
0.4
0.6
V
I sink = 8mA
Vin
Input Switching Threshold
1.0
1.2
1.5
V
**
VHys
Input Switching Hysteresis
20
25
30
mV
**
Table 13 - FT232R UART and CBUS I/O Pin Characteristics (VCCIO = 2.8V, High Drive Level)
Parameter Description
Min Typ Max Units Conditions
Voh
Output Voltage High
2.1
2.8
3.2
V
I source = 3mA
Vol
Output Voltage Low
0.3
0.4
0.6
V
I sink = 8mA
Vin
Input Switching Threshold
1.0
1.2
1.5
V
**
VHys
Input Switching Hysteresis
20
25
30
mV
**
**Inputs have an internal 200kΩ pull-up resistor to VCCIO.
Table 14 - FT232R RESET# and TEST Pin Characteristics
Parameter Description
Vin
Input Switching Threshold
Min Typ Max Units Conditions
1.3
1.6
1.9
V
VHys
Input Switching Hysteresis
50
55
60
mV
Table 15 - FT232R USB I/O Pin (USBDP, USBDM) Characteristics
Parameter Description
Min Typ
UVoh
I/O Pins Static Output ( High)
2.8
UVol
I/O Pins Static Output ( Low )
0
UVse
UCom
UVDif
UDrvZ
Single Ended Rx Threshold
Differential Common Mode
Differential Input Sensitivity
Driver Output Impedance
0.8
0.8
0.2
26
29
Max
3.6
0.3
2.0
2.5
44
Units
V
V
V
V
V
Ohms
Conditions
RI = 1.5kΩ to 3V3Out ( D+ )
RI = 15kΩ to GND ( D- )
RI = 1.5kΩ to 3V3Out ( D+ )
RI = 15kΩ to GND ( D- )
***
***Driver Output Impedance includes the internal USB series resistors on USBDP and USBDM pins.
EVAL232R FT232RL USB to RS232 Evaluation Module Datasheet Version 0.90
© Future Technology Devices International Ltd. 2005