TS3USB221E Datasheet, PDF (5/20 Pages) Texas Instruments – HIGH-SPEED USB 2.0 (480-Mbps) 1:2 MULTIPLEXER/DEMULTIPLEXER SWITCH WITH SINGLE ENABLE AND IEC LEVEL 3 ESD PROTECTION

TS3USB221E
www.ti.com......................................................................................................................................................................................... SCDS263 – SEPTEMBER 2009
DYNAMIC ELECTRICAL CHARACTERISTICS
over operating range, T_A = –40°C to 85°C, V_CC = 2.5 V ±10%, GND = 0 V
PARAMETER
TEST CONDITIONS
TYP ⁽¹⁾
X_TALK
Crosstalk
R_L = 50 , f = 250 MHz
-39
O_IRR
OFF isolation
R_L = 50 , f = 250 MHz
-40
BW
Bandwidth (3 dB)
R_L = 50
1
(1) For Max or Min conditions, use the appropriate value specified under Electrical Characteristics for the applicable device type.
UNIT
dB
dB
GHz
SWITCHING CHARACTERISTICS
over operating range, T_A = –40°C to 85°C, V_CC = 3.3 V ±10%, GND = 0 V
PARAMETER
t_pd
Propagation delay⁽²⁾⁽³⁾
t_ON
Line enable time
S to D, nD
OE to D, nD
t_OFF
t_SK(O)
t_SK(P)
Line disable time
S to D, nD
OE to D, nD
Output skew between center port to any other port⁽²⁾
Skew between opposite transitions of the same output (t_PHL– t_PLH)⁽²⁾
MIN TYP⁽¹⁾
0.25
0.1
0.1
MAX
30
17
12
10
0.2
0.2
UNIT
ns
ns
ns
ns
ns
(1) For Max or Min 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. Since this time constant is much smaller than the rise/fall
times of typical driving signals, it adds very little propagational delay to the system. 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.
SWITCHING CHARACTERISTICS
over operating range, T_A = –40°C to 85°C, V_CC = 2.5 V ±10%, GND = 0 V
PARAMETER
t_pd
Propagation delay⁽²⁾⁽³⁾
t_ON
Line enable time
S to D, nD
OE to D, nD
MIN TYP⁽¹⁾
0.25
MAX
50
32
UNIT
ns
ns
t_OFF
t_SK(O)
t_SK(P)
Line disable time
S to D, nD
OE to D, nD
Output skew between center port to any other port⁽²⁾
Skew between opposite transitions of the same output (t_PHL– t_PLH)⁽²⁾
23
ns
12
0.1
0.2 ns
0.1
0.2 ns
(1) For Max or Min 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. Since this time constant is much smaller than the rise/fall
times of typical driving signals, it adds very little propagational delay to the system. 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.
Copyright © 2009, Texas Instruments Incorporated
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