C541U 데이터 시트보기 (PDF) - Siemens AG
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C541U Datasheet PDF : 65 Pages
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C540U
C541U
USB Transceiver Characteristics
VCC = 4.0V to 5.5V (5V +10%, -20%); VSS = 0 V
TA = 0 to 70 °C
Parameter
Output impedance (high state)
Output impedance (low state)
Input leakage current
Tristate output off-state current
Crossover point
Symbol
RDH
RDL
II
I OZ
VCR
Limit Values
min.
max.
28
43
28
51
–
±5
–
± 10
1.3
2.0
Unit Test Condition
Ω
1)
Ω
µA VIN = VSS or VCC
µA VOUT = VSS or VCC 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
tFR
tFF
tLR
tLF
min.
4
4
75
75
Limit Values
max.
20
20
300
300
Unit
ns
ns
ns
ns
Semiconductor Group
61
1997-10-01
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