Datasheet

© Copyright 2009 Future Technology Devices International Ltd
15
Document Reference No.: FT_000202
UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04
Clearance No.: FTDI# 124
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Voh
Output Voltage High
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 6.6 FIFO Interface and Control Bus Pin Characteristics (VCCIO = 5.0V, High Drive Level)
Parameter
Description
Minimum
Typical
Maximum
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 6.7 FIFO Interface and Control Bus Pin Characteristics (VCCIO = 3.3V, High Drive Level)
Parameter
Description
Minimum
Typical
Maximum
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
**
Table 6.8 FIFO Interface and Control Bus Pin Characteristics (VCCIO = 2.8V, High Drive Level)
** Inputs 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 6.9 RESET# and TEST Pin Characteristics