Datasheet

Copyright © 2009 Future Technology Devices International Limited 19
Document No.: FT_000053
FT232R USB UART IC Datasheet Version 2.02
Clearance No.: FTDI# 38
Parameter Description Minimum Typical Maximum Units Conditions
Voh Output Voltage High 2.1 2.6 2.8 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 5.9 UART and CBUS I/O Pin Characteristics (VCCIO = +2.8V, High Drive Level)
Parameter Description Minimum Typical Maximum Units Conditions
Voh Output Voltage High 1.35 1.67 1.8 V I source = 0.4mA
Vol Output Voltage Low 0.12 0.18 0.35 V I sink = 3mA
Vin
Input Switching
Threshold
1.0 1.2 1.5 V **
VHys
Input Switching
Hysteresis
20 25 30 mV **
Table 5.10 UART and CBUS I/O Pin Characteristics (VCCIO = +1.8V, High Drive Level)
** Only input pins have an internal 200KΩ pull-up resistor to VCCIO
Parameter Description Minimum Typical Maximum Units Conditions
Vin
Input Switching
Threshold
1.3 1.6 1.9 V
VHys
Input Switching
Hysteresis
50 55 60 mV
Table 5.11 RESET# and TEST Pin Characteristics