
Copyright 2011 Future Technology Devices International Limited
16
Document No.: FT_000329
FT232BL
/BQ USB UART IC Datasheet Version 2.2
Clearance No.: FTDI#
171
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Voh
Output Voltage High
4.0
-
5.0
V
Fosch = 6MHZ
Vol
Output Voltage Low
0.1
-
1.0
V
Fosch = 6MHZ
Vin
Input Switching
Threshold
1.8
2.5
3.2
V
Table 5.5 XTIN / XTOUT Pin Characteristics
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Voh
Output Voltage High
3.2
4.1
4.9
V
I source = 2mA
Vol
Output Voltage Low
0.3
0.4
0.6
V
I sink = 2mA
Vin
Input Switching
Threshold
1.3
1.6
1.9
V
Vhys
Input Switching
Hysteresis
50
55
60
mV
**Note 5
Table 5.6 RESET#, TEST, EECS, EESK, EEDATA Pin Characteristics
**Note 5 – EECS, EESK and EEDATA pins have an internal 200K pull-up resistor to VCC
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Voh
Output Voltage High
3.0
-
3.6
V
I source = 2mA
Vol
Output Voltage Low
0.3
-
0.6
V
I sink = 2mA
Table 5.7 RSTOUT Pin Characteristics (VCCIO = +1.8V, Standard Drive Level)
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Uvoh
IO Pins Static Output (
High)
2.8
-
3.6
V
RI = 1.5K to 3V3Out ( D+)
I = 15K to GND ( D-)
Uvol
IO Pins Static Output (
Low)
0
-
0.3
V
RI = 1.5K to 3V3Out ( D+)
I = 15K to GND ( D-)
Uvse
Single Ended Rx
Threshold
0.8
-
2.0
V
Ucom
Differential Common
Mode
0.8
-
2.5
V
UVDif
Differential Input
Sensitivity
0.2
-
V
UdrvZ
Driver Output Impedance
29
-
44
Ohms
**Note 6
Table 5.8 USB I/O Pin Characteristics
**Note 6 – Driver Output Impedance includes the external 27R series resistors on USBDP and USBDM
pins.