Document No.: FT_000060
FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC
Datasheet Version 2.09
Clearance No.: FTDI#78
The I/O pins are +3.3v cells, which are +5V tolerant (except the USB PHY pins).
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
V
Ioh = +/-2mA
2.40
3.14
I/O Drive strength*
= 4mA
V
V
V
V
I/O Drive strength*
= 8mA
3.20
3.22
3.22
Voh
Output Voltage High
I/O Drive strength*
= 12mA
I/O Drive strength*
= 16mA
Iol = +/-2mA
0.18
0.40
I/O Drive strength*
= 4mA
V
V
V
I/O Drive strength*
= 8mA
0.12
0.08
0.07
-
Vol
Output Voltage Low
I/O Drive strength*
= 12mA
I/O Drive strength*
= 16mA
Input low Switching
Threshold
Vil
0.80
V
V
LVTTL
Input High Switching
Threshold
Vih
2.0
-
LVTTL
LVTTL
Vt
Switching Threshold
1.50
1.10
1.60
75
V
V
Schmitt trigger negative
going threshold voltage
Vt-
Vt+
Rpu
Rpd
Iin
0.80
-
Schmitt trigger positive
going threshold voltage
2.0
190
190
85
V
Input pull-up resistance
40
40
15
KΩ
KΩ
μA
μA
Vin = 0
Vin =VCCIO
Vin = 0
Input pull-down
resistance
75
Input Leakage Current
45
Tri-state output leakage
current
Ioz
+/-10
Vin = 5.5V or 0
Table 5.3 I/O Pin Characteristics (except USB PHY pins)
*The I/O drive strength and slow slew-rate are configurable in the EEPROM.
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