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Features
2 Dierential Channel, 2:1 Mux/DeMux
USB 3.0 SuperSpeed switch
Bi-directional operation
Low Bit-to-Bit Skew, 10 ps max
3dB Bandwidth = 8.1GHz
Low channel-to-channel skew: 20 ps max
Low insertion loss: -1dB @ 2.5 GHz (5.0 Gbps)
Low Crosstalk: -33dB @ 2.5 GHz (5.0 Gbps)
Low O Isolation: -27dB @ 2.5 GHz (5.0 Gbps)
Low Return Loss: -23.3dB @ 2.5GHz (5.0Gbps)
VDD Operating Range: 3.3 V +/-10%
ESD Tolerance: 2 kV HBM
Low current: 0.2mA Typ.
Packaging (Pb-free & Green):
– 20-contact TQFN (2.5 × 4.5mm)
Description
Pericom Semiconductor’s PI3USB302-A is a 2-dierential chan-
nel bi-directional multiplexer/demultiplexer switch. Due to its
low bit-to-bit skew, high channel-to-channel noise isolation and
bandwidth, this product is ideal for USB 3.0 signal switching at
5.0 Gbps.
Application
Routing USB 3.0 SuperSpeed signals
Block Diagram Pin Description (Top-side view)
Rx-
Rx+
Tx-
Tx+
Tx1-
Tx1+
Tx2-
Tx2+
Rx1-
Rx1+
Rx2-
Rx2+
SEL
PD
Switch
Control
PD
Tx+
GND
Tx1+
Tx1-
Rx1+
Rx1-
Tx2+
Tx2-
Rx2-
GND
VDD VDD
GND
2
3
4
5
6
7
8
9
1
20
10 11
GND
V
DD
Rx+
Rx- Rx2+
SEL
Tx-
19
18
17
16
15
14
13
12
Truth Table
Function SEL PD
port 1 is active L L
port 2 is active H L
Both Ports Hi-z, IC power down x H
PI3USB302-A
3.3V, USB 3.0, 1-Port, 2:1 Mux/DeMux Switch
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PI3USB302-A
3.3V, USB 3.0, 1-Port, 2:1 Mux/DeMux Switch
Pin Description
Pin # Pin Name I/O Description
2PD I Power Down input. see truth table on page 1 for functionality
3Tx+ I/O Signal I/O, Transmit dierential pair from common port
4Tx- I/O
7
8
Rx+
Rx- I/O Signal I/O, Receive dierential pair from common port
9SEL IOperation mode Select
(when SEL=0: port 1 is active, when SEL=1: port 2 is active
14
15
Tx2-
Tx2+ I/O Signal I/O, Transmit dierential pair, port 2
12 Rx2- I/O Signal I/O, Receive dierential pair, port 2
13 Rx2+ I/O
17
16
Rx1+
Rx1- I/O Signal I/O, Receive dierential pair, port 1
19
18
Tx1+
Tx1- I/O Signal I/O, Transmit dierential pair, port 1
6, 10, 1 VDD Pwr 3.3V ±10% Positive Supply Voltage
5, 11, 20, center pad GND Pwr Power ground
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PI3USB302-A
3.3V, USB 3.0, 1-Port, 2:1 Mux/DeMux Switch
Note: Stresses greater than those listed under MAXI-
MUM RATINGS may cause permanent damage to
the device. is 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 specication is not implied. Exposure to absolute
maximum rating conditions for extended periods may
aect reliability.
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
DC Electrical Characteristics for Switching over Operating Range
Parameters Description Test Conditions(1) Min Ty p(1) Max Units
V
IH-SEL, PD
Input HIGH Voltage, SEL, PD Input 2 3.6
VV
IL-SEL, PD
Input LOW Voltage, SEL, PD Input 0 0.8
V
IK
Clamp Diode Voltage VDD = Max, IIN = –18mA –0.7 –1.2
I
IH
Input HIGH Current SEL, PD Input VDD = Max, VIN = VDD -5 +5
µA
I
IL
Input LOW Current, SEL, PD Input VDD = Max, VIN = 0V -5 +5
IIH Input High Current, TX, RXVDD = Max, VIN = 1.5V -10 +10
IIL Input LOW Current, TX, RXVDD = Max, VIN = 0V -10 +10
IOZH High Z HIGH Current, TX, RXVDD = Max, VIN = 1.5V -10 +10 µA
IOZL High Z LOW Current, TX, RXVDD = Max, VIN = 0V -10 +10 µA
Note:
1. Typical values are at VDD = 3.3V, TA = 25°C ambient and maximum loading.
Switching Characteristics
Parameters Description Test Conditions Min. Typ. Max. Units
t
PZH
, t
PZL
Line Enable Time 25 30 ns
t
PHZ
, tPLZ Line Disable Time 5 25
t
b-b
Bit-to-bit skew within the same dierential pair 5 10 ps
t
ch-ch
Channel-to-channel skew 20
Recommended Operating Conditions
Symbol Parameter Conditions Min Ty p Max Units
VDD 3.3V Power Supply 3.0 3.3 3.6 V
IDD Total current from VDD
3.3V supply SEL = 0V or VDD, 0.2 1mA
IDD_PD Power down current PD = 1 20 40 uA
TCASE Case temperature range
for operation within spec. -40 85 Celsius
Electrical Characteristics
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
SEL/PD DC Input Voltage ................................................–0.5V to 4.6V
DC Output Current .......................................................................120mA
Power Dissipation ........................................................................... 0.5W
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PI3USB302-A
3.3V, USB 3.0, 1-Port, 2:1 Mux/DeMux Switch
Dynamic Electrical Characteristics
Parameter Description Test Conditions Min. Ty p.(1) Max. Units
DDIL2,3 Dierential Insertion Loss
(VIN = -10dBm, DC = 0V)
f= 100MHz
f= 1.25GHz
f= 2.5GHz
f=4.0GHz
-0.4
-0.6
-1.0
-1.7
dB
DDILOFF2,3 Dierential O Isolation
f= 100MHz
f= 1.25GHz
f= 2.5GHz
f=4.0GHz
-59
-37
-27
-21
dB
DDRL2Dierential Return Loss
f= 100MHz
f= 1.25GHz
f= 2.5GHz
f= 4.0GHz
-27
-23.3
-23.3
-13.5
dB
DDNEXT2,3 Near End Crosstalk
f= 100MHz
f= 1.25GHz
f= 2.5GHz
f= 4.0GHz
-57
-38
-33
-32
dB
BW -3dB Bandwidth 8.1 GHz
Notes:
1.Guaranteed by design. Typical values are at VDD = 3.3V , TA = 25°C ambient and maximum loading.
2. S parameters are measured with our evaluation board made with Rogers (R04350) material. Trace width is 30 mil, length 540 mil, trace impedence is 50 Ohm
(+/- 5%) and total insertion loss of the trace is 0.5dB@4GHz.
3. Measurement done with xture deembedding.
+
–
+
–
BALANCED
PORT1
DUT
+
–
50
50
+
–
BALANCED
PORT2
50
50
Diff. Near End Xtalk Test Circuit
+
–
+
–
BALANCED
PORT1
BALANCED
PORT2
DUT
+
–
50
50
Diff. Off Isolation Test Circuit
+
–
+
–
BALANCED
PORT1
BALANCED
PORT2
DUT
Diff. Insertion Loss and Return Test
Circuit
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PI3USB302-A
3.3V, USB 3.0, 1-Port, 2:1 Mux/DeMux Switch
Differential Insertion Loss
Differential Return Loss
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PI3USB302-A
3.3V, USB 3.0, 1-Port, 2:1 Mux/DeMux Switch
Differential Off Isolation
Differential Crosstalk
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PI3USB302-A
3.3V, USB 3.0, 1-Port, 2:1 Mux/DeMux Switch
5.0 Gbps RX signal eye with PI3USB302-A5.0 Gbps RX signal eye without PI3USB302-A
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PI3USB302-A
3.3V, USB 3.0, 1-Port, 2:1 Mux/DeMux Switch
Switch Positions
Test Switch
tPLZ, tPZL 3.0V
tPHZ, tPZH GND
Prop Delay Open
Switching Waveforms
Voltage Waveforms Enable and Disable Times
R
T
4pF
C
L
V
DD
V
IN
V
OUT
200-ohm
200-ohm
3.0V
Pulse
Generator D.U.T
Test Circuit for Electrical Characteristics(1-5)
tPLZ
VDD/2 VDD/2
VDD
1.5V
0V
VOL
0.75V
0.75V
tPHZ
tPZL
tPZH
Output 1
Output 2
VOL
1.5V
SEL
VOL + 0.15V
1.35V
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PI3USB302-A
3.3V, USB 3.0, 1-Port, 2:1 Mux/DeMux Switch
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
Note:
1. For latest package info, please check: http://www.pericom.com/products/packaging/mechanicals.php
Ordering Information
Ordering Code Package Code Package Type
PI3USB302-AZBE ZB 20-Contactm Very ink Quad Flat No-Lead (TQFN)
PI3USB302-AZBEX ZB 20-Contactm Very ink Quad Flat No-Lead (TQFN), Tape & Reel
Notes:
• Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
• E = Pb-free and Green
• Adding an X sufx = Tape/Reel
14-0265
Packaging Mechanical: 20-TQFN (ZB)
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