1 General description

PTN36043B is a very small, low power 2 differential channel 2-to-1 active multiplex/demultiplexer switch with

integrated SuperSpeed USB 3.1 Gen 1 (also known as USB 3.0) redriver IC that can switch two differential

signals to one of two locations. The active switch has optimized performance with minimized crosstalk, as

required by the high-speed serial interface for USB Type-C connector. PTN36043B allows expansion of existing

high-speed ports for very low power consumption.

With an integrated USB 3.1 Gen 1 redriver, signal quality is enhanced by performing receive equalization on

the deteriorated input signal followed by transmit de-emphasis maximizing system link performance. With its

superior differential signal conditioning and enhancement capability, the device delivers significant flexibility and

performance scaling for various systems with different PCB characteristics and cable channel conditions and

still benefit from optimum power consumption.

PTN36043B has built-in advanced power management capability that enables significant power savings under

various different USB 3.1 Gen 1 Low-power modes (U2/U3). It can detect link electrical conditions and can

dynamically activate/deactivate internal circuitry and logic. The device performs these actions without host

software intervention and conserves power.

Design configuration within the PTN36043B allows a pass-through state when the link observes continuous

polling, with low frequency periodic signaling (LFPS) in one channel and electrical idle in the other.

PTN36043B is powered from a 1.8 V supply and is available in a small DHX2QFN18 package (2.4 mm × 2.0 mm × 0.35 mm) with 0.4 mm pitch.

2 Features and benefits

• 2 bidirectional differential channel, 2 : 1 multiplex/demultiplexer switch, supports USB 3.1 Gen 1 specification

(SuperSpeed only)

• Compliant to SuperSpeed USB 3.1 Gen 1 standard

• Pin out data flow matches USB Type-C connector pin assignments

• Two control pins for each channel to select optimized signal conditions

– Receive equalization on each channel to recover from InterSymbol Interference (ISI) and high-frequency

losses, with provision to choose equalization gain settings per channel

– Transmit de-emphasis on each channel delivers pre-compensation suited to channel conditions

– Output swing adjustment

• Integrated termination resistors provide impedance matching on both transmit and receive sides

• Automatic receiver termination detection

• Low active power: 203 mW/113 mA (typical) for VDD = 1.8 V

• Power-saving states:

– 1.35 mW/0.75 mA (typical) when in U2/U3 states

– 0.81 mW/0.45 mA (typical) when no connection detected

• Excellent differential and common return loss performance

– 14 dB differential and 15 dB common-mode return loss for 10 MHz to 1250 MHz

• Flow-through pinout to ease PCB layout and minimize crosstalk effects

• Power supply: VDD = 1.8 V (typical)

• Compliant with JESD 78 Class II latch up test standard

• Very thin DHX2QFN18 package: 2.4 mm x 2.0 mm x 0.35 mm, 0.4 mm pitch

• ESD protection exceeds 7000 V HBM per JDS-001-2012 and 1000 V CDM per JESD22-C101

• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

• Operating temperature range: -40°C to +85°C

3 Applications

• USB 3.1 Gen 1 application for USB Type-C connectors

• Smart Phones, Tablets/Mobile Devices

• Desktop/Notebook Computers

• Docking Stations

• USB 3.1 Gen 1 Peripherals such as flat panel display, consumer/storage devices, printers or USB 3.1 Gen 1

capable hubs/repeaters