C541U Datasheet, PDF (60/63 Pages) Siemens Semiconductor Group – 8 BIT CMOS MICROCONTROLLER

C541U
USB Transceiver Characteristics
(Operating Conditions apply)
Parameter
Output impedance (high state)
Output impedance (low state)
Input leakage current
Tristate output off-state current
Crossover point
Symbol
R_DH
R_DL
I_I
I _OZ
V_CR
Limit Values
min.
max.
28
43
28
51
–
±5
–
± 10
1.3
2.0
Unit Test Condition
Ω
1)
Ω
µA V_IN = V_SS or V_DD
µA
V_OUT = V_SS or V_DD ¹⁾
V
2)
Notes :
1) This value includes an external resistor of 30Ω ± 1% (see “Load for D+/D-“ diagram for testing details)
2) The crossover point is in the range of 1.3V to 2.0V for the high speed mode with a 50pF capacitance. In the
low-speed mode with a 100pF or greater capacitance, the crossover point is in the range of 1.3V to 2.0V.
Parameter
High speed mode rise time
High speed mode fall time
Low speed mode rise time
Low speed mode fall time
Symbol
t_FR
t_FF
t_LR
t_LF
min.
4
4
75
75
Limit Values
max.
20
20
300
300
Unit
ns
ns
ns
ns
Semiconductor Group
58