Datasheet

DocID7041 Rev 8 3/13
USBUF Technical information
13
2 Technical information
Figure 2. USB standard requirements
Host or
Hub port
Twisted pair shielded
Zo = 90ohms
5m max
Hub 0 or
Full-speed function
Untwisted unshielded
3m max
FULL SPEED CONNECTION
LOW SPEED CONNECTION
3.3V
3.3V
D+
D-
D+
D-
D+
D-
D+
D-
1.5k
1.5k
Hub 0 or
Low-speed function
Low-speed USB
Transceiver
Full-speed or
Low-speed USB
Transceiver
15k
Rt
Rt
Ct
Ct
Host or
Hub port
Full-speed or
Low-speed USB
Transceiver
15k
Rt
Rt
Ct
Ct
Rt
Rt
Ct
Ct
Full-speed USB
Transceiver
Rt
Rt
Ct
Ct
15k
15k