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TS3USB221 bảng dữ liệu(PDF) 6 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  High-Speed USB 2.0 (480-Mbps) 1:2 Multiplexer ??Demultiplexer Switch With Single Enable
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TS3USB221 bảng dữ liệu(HTML) 6 Page - Texas Instruments

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TS3USB221
SCDS220I – NOVEMBER 2006 – REVISED JANUARY 2016
www.ti.com
6.6 Dynamic Electrical Characteristics, VCC = 3.3 V ± 10%
over operating range, TA = –40°C to 85°C, VCC = 3.3 V ± 10%, GND = 0 V
PARAMETER
TEST CONDITIONS
TYP(1)
UNIT
XTALK
Crosstalk
RL = 50 Ω, f = 250 MHz
–40
dB
OIRR
OFF isolation
RL = 50 Ω, f = 250 MHz
–41
dB
BW
Bandwidth (–3 dB)
RL = 50 Ω
1.1
GHz
(1)
For Maximum or Minimum conditions, use the appropriate value specified under Electrical Characteristics for the applicable device type.
6.7 Dynamic Electrical Characteristics, VCC = 2.5 V ± 10%
over operating range, TA = –40°C to 85°C, VCC = 2.5 V ± 10%, GND = 0 V
PARAMETER
TEST CONDITIONS
TYP(1)
UNIT
XTALK
Crosstalk
RL = 50 Ω, f = 250 MHz
–39
dB
OIRR
OFF isolation
RL = 50 Ω, f = 250 MHz
–40
dB
BW
Bandwidth (–3 dB)
RL = 50 Ω
1.1
GHz
(1)
For Maximum or Minimum conditions, use the appropriate value specified under Electrical Characteristics for the applicable device type.
6.8 Switching Characteristics, VCC = 3.3 V ± 10%
over operating range, TA = –40°C to 85°C, VCC = 3.3 V ± 10%, GND = 0 V
PARAMETER
MIN
TYP(1)
MAX
UNIT
tpd
Propagation delay(2) (3)
0.25
ns
S to D, nD
30
tON
Line enable time
ns
OE to D, nD
17
S to D, nD
12
tOFF
Line disable time
ns
OE to D, nD
10
tSK(O)
Output skew between center port to any other port(2)
0.1
0.2
ns
tSK(P)
Skew between opposite transitions of the same output (tPHL – tPLH)
(2)
0.1
0.2
ns
(1)
For Maximum or Minimum conditions, use the appropriate value specified under Electrical Characteristics for the applicable device type.
(2)
Specified by design
(3)
The bus switch contributes no propagational delay other than the RC delay of the on resistance of the switch and the load capacitance.
The time constant for the switch alone is of the order of 0.25 ns for 10-pF load. This time constant adds very little propagational delay to
the system because it is much smaller than the rise/fall times of typical driving signals. Propagational delay of the bus switch, when used
in a system, is determined by the driving circuit on the driving side of the switch and its interactions with the load on the driven side.
6.9 Switching Characteristics, VCC = 2.5 V ± 10%
over operating range, TA = –40°C to 85°C, VCC = 2.5 V ± 10%, GND = 0 V
PARAMETER
MIN
TYP(1)
MAX
UNIT
tpd
Propagation delay(2) (3)
0.25
ns
S to D, nD
50
tON
Line enable time
ns
OE to D, nD
32
S to D, nD
23
tOFF
Line disable time
ns
OE to D, nD
12
tSK(O)
Output skew between center port to any other port(2)
0.1
0.2
ns
tSK(P)
Skew between opposite transitions of the same output (tPHL – tPLH)
(2)
0.1
0.2
ns
(1)
For Maximum or Minimum conditions, use the appropriate value specified under Electrical Characteristics for the applicable device type.
(2)
Specified by design
(3)
The bus switch contributes no propagational delay other than the RC delay of the on resistance of the switch and the load capacitance.
The time constant for the switch alone is of the order of 0.25 ns for 10-pF load. The time constraint adds very little propagational delay
to the system because it is much smaller than the rise and fall times of typical driving signals. Propagational delay of the bus switch,
when used in a system, is determined by the driving circuit on the driving side of the switch and its interactions with the load on the
driven side.
6
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