A product Line of
Diodes Incorporated
PI2USB4122
USB 3.0, 4:1 Mux/DeMux Switch
Features
¼2
Differential Channel, 4:1 Mux/DeMux
¼USB
3.0 performance, 5.0 Gbps
¼Low
Bit-to-Bit Skew, 7ps Max.
¼Low
Crosstalk: -23dB@3GHz
¼Low
Off Isolation: -23dB@3GHz
¼V
DD
Operating Range: +1.8V+/-10%
¼ESD
Tolerance 2kV HBM on data I/O
¼Packaging
(Pb-free & Green):
– 42 contact TQFN
Description
Diodes' PI2USB4122 is a 4 to 1 differential channel multiplexer/
demultiplexer switch. Due to its low bit-to-bit skew, high channel-
to-channel noise isolation and high bandwidth, this product is ideal
for USB 3.0 switching to 5.0 Gbps.
Application
Switching USB 3.0 signals for Mux or DeMux.
Block Diagram
A0+
A0-
A1+
A1-
SA
Pin Description
V
DD
GND
V
DD
GND
42 41 40 39
B0+
B0-
B1+
B1-
SB
Z0+
Z0-
Z1+
Z1-
SC
C0+
C0-
C1+
C1-
GND
SEL0
SEL1
V
DD
GND
GND
Z0+
Z0-
V
DD
Z1+
Z1-
GND
GND
V
DD
GND
GND
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
VSS
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
A0+
A0-
A1+
A1-
B0+
B0-
B1+
B1-
V
DD
C0+
C0-
C1+
C1-
D0+
D0-
D1+
D1-
18 19 20 21
V
DD
GND
V
DD
GND
D0+
D0-
D1+
D1-
SD
Truth Table
SEL1
0
SEL0
0
1
0
1
FUNCTION
Z to A
Z to B
Z to C
Z to D
SEL1
SEL0
DECODE
SA
SB
SC
SD
0
1
1
PI2USB4122
Document Number DS40278 Rev 1-2
1
www.diodes.com
December 2017
Diodes Incorporated
A product Line of
Diodes Incorporated
PI2USB4122
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ......................................... –65°C to +150°C
Supply Voltage to Ground Potential .................... –0.5V to +2.5V
DC Input Voltage ................................................. –0.5V to +V
DD
DC Output Current ........................................................... 120mA
Power Dissipation ................................................................ 0.5W
Note:
Stresses greater than those listed under MAXIMUM RATINGS
may cause permanent damage to the device. This is a stress rating only
and functional operation of the device at these or any other conditions
above those indicated in the operational sections of this specification
is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect reliability.
Power Supply Characteristics
Parameters Description
I
CC
Test Conditions
(1)
Min.
Typ.
(2)
200
Max.
300
Units
µA
Quiescent Power Supply Current V
DD
= Max, V
IN
= GND or V
DD
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
DD
= 1.8V,
T
A
= 25°C ambient and maximum loading.
DC Electrical Characteristics for Switching over Operating Range
(T
A
= –40°C to +85°C, V
DD
= 1.8V+/-10%)
Parameter
V
IH
V
IL
V
IK
I
IH
I
IL
Description
Input HIGH Voltage
Input LOW Voltage
Clamp Diode Voltage
Input HIGH Current
Input LOW Current
Test Conditions
Guaranteed HIGH level
Guaranteed LOW level
V
DD
= Max., I
IN
= –18mA
V
DD
= Max., V
IN
= V
DD
V
DD
= Max., V
IN
= GND
Min.
0.65 x
V
DD
-
-
-
-
Typ.
(2)
-
-
-0.7
-
-
Max.
-
0.35 x
V
DD
-1.2
±5
±5
μA
V
Units
Switching Characteristics
(TA= -40º to +85ºC, VDD = 1.8V+/-10%)
Parameter
Description
Min.
0.5
0.5
tPZH, tPZL Line Enable Time - SEL to AN, BN
tPHZ, tPLZ Line Disable Time - SEL to AN, BN
tb-b
Bit-to-bit skew within the same differential pair
tch-ch
Channel-to-channel skew
Typ.
(2)
-
-
7
35
Max.
8.0
10
Units
ns
ps
ps
Notes:
1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
Dynamic Electrical Characteristics Over the Operating Range
(TA= -40º to +85ºC, VDD = 1.8V+/-10%)
Parameter Description
X
TALK
O
IRR
I
LOSS
BW
Crosstalk
OFF Isolation
Differential Insertion Loss
Bandwidth -3dB
Test Conditions
(1)
f = 2.5 GHz
f = 2.5 GHz
f= 2.5 GHz
Min.
Typ.
(2)
-40
-25
-3.0
2.6
Max.
Units
dB
dB
dB
GHz
Notes:
1. Guaranteed by design.
2.
Typical values are at V
DD
= 1.8V,
T
A
= 25°C ambient and maximum loading.
PI2USB4122
www.diodes.com
December 2017
Diodes Incorporated
Document Number DS40278 Rev 1-2
2
A product Line of
Diodes Incorporated
PI2USB4122
+
–
+
–
+
–
50
50
+
BALANCED
PORT1
–
+
BALANCED
– PORT2
BALANCED
PORT1
BALANCED
PORT1
BALANCED
PORT2
+
–
+
–
+ 50
– 50
+ 50
– 50
DUT
BALANCED
PORT2
DUT
DUT
Diff. Near End Xtalk Test Circuit
Diff. Insertion Loss and Return
Test Circuit
Diff. Off Isolation Test Circuit
Test Circuit for Electrical Characteristics
(1-5)
V
DD
200-ohm
D.U.T
R
T
V
OUT
4pF
C
L
200-ohm
2 x V
DD
Pulse
Generator
V
IN
Notes:
1. C
L
= Load capacitance: includes jig and probe capacitance.
2. R
T
= Termination resistance: should be equal to Z
OUT
of the Pulse Generator
3. Output 1 is for an output with internal conditions such that the output is low
except when disabled by the output control.
output 2 is for an output with internal conditions such that the output is high
except when disabled by the output control.
4. All input impulses are supplied by generators having the following characteris-
tics: PRR ≤ MHz, Z
O
= 50Ω, t
R
≤ 2.5ns, t
F
≤ 2.5ns.
5. The outputs are measured one at a time with one transition per measurement.
Switch Positions
Test
t
PLZ
, t
PZL
t
PHZ
, t
PZH
Prop Delay
Switch
2 x V
DD
GND
Open
Switching Waveforms
SEL
V
DD
/2
tPZL
tPLZ
V
DD
/2
0V
Output
VOH
V
DD
V
DD/2
tPZH
tPHZ
V
OL
+0.3V
V
OH
–0.3V
VOL
VOH
VOL
V
DD/2
Output
Voltage Waveforms Enable and Disable Times
PI2USB4122
Document Number DS40278 Rev 1-2
5
www.diodes.com
December 2017
Diodes Incorporated
FPGA/CPLD
京公网安备 11010802033920号
EEWORLD
