Silicon Laboratories C8051F345 Two-Way Radio User Manual


 
Rev. 0.5 191
C8051F340/1/2/3/4/5/6/7
Table 16.4. USB Transceiver Electrical Characteristics
V
DD
= 3.0 to 3.6 V, –40 to +85 °C unless otherwise specified
Parameters Symbol Conditions Min Typ Max Units
Transmitter
Output High Voltage
V
OH
2.8 V
Output Low Voltage
V
OL
0.8 V
Output Crossover Point
V
CRS
1.3 2.0 V
Output Impedance
Z
DRV
Driving High
Driving Low
38
38
Pull-up Resistance
R
PU
Full Speed (D+ Pull-up)
Low Speed (D– Pull-up)
1.425 1.5 1.575
k
Output Rise Time
T
R
Low Speed
Full Speed
75
4
300
20
ns
Output Fall Time
T
F
Low Speed
Full Speed
75
4
300
20
ns
Receiver
Differential Input
Sensitivity
V
DI
| (D+) – (D–) | 0.2 V
Differential Input Common
Mode Range
V
CM
0.8 2.5 V
Input Leakage Current
I
L
Pullups Disabled <1.0 µA
Note: Refer to the USB Specification for timing diagrams and symbol definitions.