Document
Features
• 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)
Block Diagram
TX1+ TX1RX1+ RX1-
TX2+ TX2RX2+ RX2-
SEL
TX1A+ TX1ARX1A+ RX1ATX1B+ TX1BRX1B+ RX1B-
TX2A+ TX2ARX2A+ RX2ATX2B+ TX2BRX2B+ RX2B-
Truth Table
SEL L H
12-0315
Function Path A Path B
PI3USB304
3.3V USB 3.0 SuperSpeed Dual 2:1 Mux/DeMux Switch with Enable
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.
Pin Configuration (Top View)
DDV GND DDV GND
GND
TX1+ TX1GND
VDD RX1+ RX1-
VDD SEL GND TX2+ TX2VDD GND RX2+ RX2GND
42 41 40 39 1 38 2 37 3 36 4 35 5 34 6 33 7 32 8 31 9 30 10 29 11 28 12 27 13 26 14 25 15 24 16 23 17 22
18 19 20 21
TX1A+ TX1ARX1A+ RX1ATX1B+ TX1BRX1B+ RX1BVDD TX2A+ TX2ARX2A+ RX2ATX2B+ TX2BRX2B+ RX2B-
DDV GND DDV GND
1 www.pericom.com P-0.1 01/16/13
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
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
VDD
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
PI3USB304
3.3V USB 3.0 SuperSpeed Dual 2:1 Mux/DeMux Switch with Enable
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
12-0315
2 www.pericom.com P-0.1 01/16/13
PI3USB304
3.3V USB 3.0 SuperSpeed Dual 2:1 Mux/DeMux Switch with Enable
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
Storage Temperature .....................................................–65°C to.