Document No.: FT_000589
FT313H USB2.0 HS Host Controller Datasheet Version 1.1
Clearance No.: FTDI# 318
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Equivalent
resistance used as
an internal chip
Driver output
impedance
Rdrv
40.5
45
49.5
ohm
Table 6-6 USB I/O Pin (USBDP, USBDM) Characteristics
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Voh
Vol
Vih
Vil
Output Voltage High
Output Voltage Low
Input High Voltage
Input Low Voltage
2.4
-
-
-
-
-
-
V
V
V
V
Ioh=2mA~16mA
Iol=2mA~16mA
LVTTL
0.4
-
2.0
-
0.8
LVTTL
Output pull up voltage
for 5V tolerant I/Os
VCC(3V3)-
0.9
Vopu*
-
-
V
Ipu = 1uA
Vin = VCC(3V3) or
0
-
-
-
±1
±1
2.3
-
-
-
uA
uA
pF
Iin
Input leakage current
Input capacitor
Vin = 5V or 0
VCC(3V3) with 5V
tolerant I/O
Cin
Table 6-7 5V Tolerant Pin (PSW_N, OC_N, VBUS) Characteristics
Note*: This parameter is to indicate that the pull up resistor for the 5V tolerant I/Os cannot reach
VCC(3V3) DC level even without DC loading current.
6.3 AC Characteristics
AC Characteristics (Ambient Temperature = -40°C to +85°C)
System clock dynamic characteristics:
Parameter
Crystal oscillator
Clock frequency
External clock input
Value
Unit
Minimum
Typical
Maximum
-
-
-
12.00
19.20
24.00
-
-
-
MHz
external clock
jitter
-
-
500
55
ps
%
clock duty cycle
45
50
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