Datasheet

Copyright © 2010 Future Technology Devices International Limited 20
Document No.: FT_000052
FT245R USB FIFO IC Datasheet Version 2.12
Clearance No.: FTDI# 39
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
0.5
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 FIFO 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
1.80
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 FIFO 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
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
UVoh
I/O Pins Static Output
(High)
2.8
3.6
V
RI = 1.5kΩ to
3V3OUT (D+) RI =
15KΩ to GND (D-)
UVol
I/O Pins Static Output
(Low)
0
0.3
V
RI = 1.5kΩ to
3V3OUT (D+) RI =
15kΩ 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
6
V