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FC106 View Datasheet(PDF) - STMicroelectronics

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FC106
5.3 DC characteristics
The following values apply to the analog signals TX+, TX-, RX+ and RX-
Table 5.3
DC characteristics for TX+, TX-, RX+ and RX-
Symbol
V
OLS50
V
OHS50
V
OLS75
V
OHS75
V
OD50
V
OD75
ROUT50
ROUT75
RIN50
RIN75
V
ISWS
Parameter
Units
Serial output low level, terminated differen- V
tially by an external 100 resistor
( Zc+ = Zc- = “open” )
Serial output high level, terminated differen- V
tially by an external 100 resistor
( Zc+ = Zc- = “open” )
Serial output low level, terminated differen- V
tially by an external 150 resistor
( Zc+ = “open” - Zc- = “Vss” )
Serial output high level, terminated differen- V
tially by an external 150 resistor
( Zc+ = “open” - Zc- = “Vss” )
Serial output peak-to-peak differential volt- V
age, terminated differentially by an external
100 resistor ( Zc+ = Zc- = “open” )
Serial output peak-to-peak differential volt- V
age, terminated differentially by an external
150 resistor ( Zc+ =”open” - Zc- = “Vss” )
Internal differential output impedance. When
50line ( Zc+ = Zc- = “open” )
Internal differential output impedance. When
75line ( Zc+ =”open” - Zc- = “Vss” )
Internal differential input impedance. When
enabled for 50line ( Zc+ = Vss / Zc- =
“open” )
Internal differential output impedance. When
enabled for 75line ( Zc+ = Zc- = Vss )
Serial input peak-to-peak differential voltage V
on RX+ and RX-
Min.
0.90
1.50
0.90
1.50
1.20
1.20
77
116
59
95
0.2
Typ
1.05
1.80
1.05
1.80
1.50
1.50
100
150
100
150
-
Max.
1.20
2.10
1.20
2.10
1.80
1.80
169
255
183
265
-
Note
Values above are given with normal Zc setting. In accordance with Section 3.13, it
is still possible to stay with 50internal control and connect the part to 75
impedance line by adding 25series resistances.
18/32
September 98
Revision 1.2
 

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