PI3USB304
3.3V USB 3.0 SuperSpeed
Dual 2:1 Mux/DeMux Switch with Enable
Features
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Dual 2:1 USB 3.0 Switch
Bi-directional Operation
5 Gbps Performance
Very high -3 dB bandwidth: 8.2 GHz
Low Insertion Loss: -1dB @ 2.5 GHz
Excellent Return Loss: -29 dB @ 2.5 GHz
Low Crosstalk: -37 dB @ 2.5 GHz
Low Off Isolation: -25 dB @ 2.5 GHz
Low Bit-to-Bit Skew, 10 ps max
Low Channel-to-Channel Skew, 20 ps max
Supply Voltage 3.3V
Low power dissipation: 0.5 mW typ.
Packaging (Pb-free & Green):
– 42-contact, TQFN (ZH42)
Description
Pericom Semiconductor’s PI3USB304 is a dual USB 3.0 2:1
switch. It can switch transmit and receive differential signals for
two 5 Gbps SuperSpeed USB 3.0 lanes.
Using advanced high-speed transmission gate technology,
PI3USB304 is bidirectional and offers both excellent signal
integrity and very low power.
-3 dB bandwidth is 8.2 GHz. Insertion loss is extremely low, only
1 dB at 2.5 GHz. All other ac parameters – return loss, crosstalk,
off isolation – lead the industry in performance. Power dissipation
is very small -- 0.5 mW typical (0.15 mA @ 3.3V)
Application
Routing USB 3.0 SuperSpeed signals.
Block Diagram
TX1
+
TX1
-
RX1+
RX1-
TX1A+
TX1A-
RX1A+
RX1A-
TX1B+
TX1B-
RX1B+
RX1B-
Pin Configuration (Top View)
V
DD
GND
V
DD
GND
TX2
+
TX2-
RX2+
RX2-
TX2A+
TX2A-
RX2A+
RX2A-
TX2B+
TX2B-
RX2B+
RX2B-
SEL
GND
TX1+
TX1-
GND
V
DD
RX1+
RX1-
V
DD
SEL
GND
TX2+
TX2-
V
DD
GND
RX2+
RX2-
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
42 41 40 39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
TX1A+
TX1A-
RX1A+
RX1A-
TX1B+
TX1B-
RX1B+
RX1B-
V
DD
TX2A+
TX2A-
RX2A+
RX2A-
TX2B+
TX2B-
RX2B+
RX2B-
Truth Table
SEL
L
H
Function
Path A
Path B
18 19 20 21
V
DD
GND
V
DD
GND
1
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12-0315
P-0.1
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3.3V USB 3.0 SuperSpeed
Dual 2:1 Mux/DeMux Switch with Enable
Pin Description
Pin #
2
3
6
7
11
12
15
16
38
37
36
35
29
28
27
26
34
33
32
31
25
24
23
22
9
5, 8, 13,18, 20, 30,
40, 42
1, 4, 10, 14, 17, 19,
21, 39, 41, Center
Pad
PI3USB304
Pin Name
TX1+
TX1–
RX1+
RX1–
TX2+
TX2–
RX2+
RX2–
TX1A+
TX1A−
RX1A+
RX1A−
TX2A+
TX2A−
RX2A+
RX2A−
TX1B+
TX1B–
RX1B+
RX1B–
TX2B+
TX2B–
RX2B+
RX2B−
SEL
V
DD
GND
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
Pwr
Pwr
Description
Signal I/O, Channel 0, Port TX1
Signal I/O, Channel 1, Port RX1
Signal I/O, Channel 2, Port TX2
Signal I/O, Channel 3, Port RX2
Signal I/O, Channel 0, Port TX1A
Signal I/O, Channel 1, Port RX1A
Signal I/O, Channel 2, Port TX2A
Signal I/O, Channel 3, Port RX2A
Signal I/O, Channel 0, Port TX1B
Signal I/O, Channel 1, Port RX1B
Signal I/O, Channel 2, Port TX2B
Signal I/O, Channel 3, Port RX2B
SEL=L: path A, SEL=H: path B, see truth table on page 1
3.3V ±10% Positive Supply Voltage
Power ground
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3.3V USB 3.0 SuperSpeed
Dual 2:1 Mux/DeMux Switch with Enable
Maximum Ratings
PI3USB304
(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 +4.6V
.
Channel DC Input Voltage ................................................ –0.5V to 1.5V
DC Output Current ...................................................................... 120mA
.
Power Dissipation ........................................................................... 0.5W
SEL DC Input Voltage ....................................................... –0.5V to 4.6V
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. Expo-
sure to absolute maximum rating conditions for extended
periods may affect reliability.
Electrical Characteristics
Recommended Operating Conditions
Symbol
V
DD
I
DD
T
CASE
Parameter
3.3V Power Supply
Total current from V
DD
3.3V supply
Case temperature range
for operation within spec.
SEL = 0V or V
DD
-40
Conditions
Min
3.0
Typ
3.3
0.15
Max
3.6
1
85
Units
V
mA
Celsius
DC Electrical Characteristics for Switching over Operating Range
Parameters
VIH - SEL
VIL - SEL
VIK
IIH
IIL
IIH
IIL
IOZH
IOZL
Description
Input HIGH Voltage, SEL Input
Input LOW Voltage, SEL Input
Clamp Diode Voltage
Input HIGH Current, SEL
Input LOW Current, SEL
Input HIGH Current, T
X
, R
X
Input LOW Current, T
X
, R
X
HighZ HIGH Current, T
X
, R
X
HighZ LOW Current, T
X
, R
X
Test Conditions
(1)
Min
2
0
Typ
(1)
Max
3.6
0.8
Units
V
V
DD
= Max., I
IN
= –18mA
V
DD
= Max., V
IN
= V
DD
V
DD
= Max., V
IN
= 0V
V
DD
= Max., V
IN
= 1.5V
V
DD
= Max., V
IN
= 0V
V
DD
= Max., V
IN
= 1.5V
V
DD
= Max., V
IN
= 0V
-5
-5
–10
–10
–10
–10
–0.7
–1.2
+5
+5
+10
+10
+10
+10
µA
µA
µA
µA
Note:
1. Typical values are at V
DD
= 3.3V, T
A
= 25°C ambient and maximum loading.
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3.3V USB 3.0 SuperSpeed
Dual 2:1 Mux/DeMux Switch with Enable
Switching Characteristics
Param-
eters
tPZH, tPZL
tPHZ , tPLZ
tb-b
tch-ch
PI3USB304
Description
Line Enable Time
Line Disable Time
Bit-to-bit skew within the same differential pair
Channel-to-channel skew
Test Conditions
Min.
2
2
Typ.
20
5
5
Max.
25
25
10
20
Units
ns
ps
ps
Dynamic Electrical Characteristics
Param-
eter
DDIL
DDIL
OFF
DDRL
DDNEXT
BW
Description
Differential Insertion Loss
(V
IN
= -10dBm, DC = 0V)
Differential Off Isolation
Differential Return Loss
Near End Crosstalk
-3dB Bandwidth
Test Conditions
f=2.5GHz
f=5GHz
f=2.5GHz
f= 0MHz - 2.5GHz
f=2.5GHz - 5GHz
f= 0MHz - 2.5GHz
f=2.5GHz - 5GHz
Min.
Typ.
(1)
-1.0
-1.8
-25
Max.
-1.2
-2.2
Units
dB
dB
dB
dB
GHz
-23
-14
-30
-28
-29
-18
-38
-34
8.2
Notes:
1. Guaranteed by design. Typical values are at V
DD
= 3.3V , T
A
= 25°C ambient and maximum loading.
BALANCED
PORT1
–
+
+
BALANCED
PORT1
+
–
+
–
+
–
50
50
BALANCED
PORT1
BALANCED
PORT2
+
–
+
–
+ 50
– 50
+ 50
– 50
BALANCED
– PORT2
BALANCED
PORT2
DUT
DUT
DUT
Diff. Insertion Loss and Return Test
Circuit
Diff. Off Isolation Test Circuit
Diff. Near End Xtalk Test Circuit
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P-0.1
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3.3V USB 3.0 SuperSpeed
Dual 2:1 Mux/DeMux Switch with Enable
PI3USB304
Differential Insertion Loss
Differential Return Loss
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嵌入式系统
