參數(shù)資料
型號: UPD31172F1-48-FN
廠商: NEC Corp.
英文描述: VRC4172TM COMPANION CHIP FOR VR4121TM
中文描述: VRC4172TM伴侶芯片VR4121TM
文件頁數(shù): 37/44頁
文件大?。?/td> 278K
代理商: UPD31172F1-48-FN
Data Sheet U14388EJ2V0DS00
37
μ
PD31172
(11) USB interface
Applicable to the DP (2:1) and DN (2:1) pins. Refer to the USB specification, revision 1.0, for details.
Parameter
Symbol
Conditions
MIN.
MAX.
Unit
Rise time
t
R
C
L
= 50 pF
4
20
ns
Fall time
t
F
C
L
= 50 pF
4
20
ns
t
R
, t
F
matching
t
RFM
t
R
/t
F
90
110
%
Full-speed
mode
Differential output signal
crossover point
V
CRS
1.3
2.0
V
C
L
= 50 pF
75
ns
Rise time
t
R
C
L
= 350 pF
300
ns
C
L
= 50 pF
75
ns
Fall time
t
F
C
L
= 350 pF
300
ns
t
R
, t
F
matching
t
RFM
t
R
/t
F
80
120
%
Low-speed
mode
Differential output signal
crossover point
V
CRS
1.3
2.0
V
Impedance
Imp.
28
43
90%
90%
10%
V
CRS
t
F
t
R
10%
DP (2:1), DN (2:1)
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