PI3L720ZHEX-1507

Analog Switches - Special Purpose Overview

The PI3L720ZHEX is an 8-channel, bidirectional 2:1 multiplexer/demultiplexer LAN switch designed for Gigabit Ethernet applications. It operates on a single supply voltage ranging from +3.0V to +3.6V, with a typical operating voltage of 3.3V. The device features a maximum on-resistance (RON) of 6.5 Ohms and a -3dB bandwidth exceeding 650 MHz. Key electrical parameters include a propagation delay of 0.25 ns, crosstalk of -75 dB at 250 MHz, and off-isolation of -35 dB. It supports power-down mode via the PD pin, drawing a maximum standby current of 0.5 mA and a power-down current of 0.25 mA. The component is housed in a 42-contact TQFN package.

Analog Switches - Special Purpose Feature Summary

• Bidirectional switching capability between differential outputs from a Gigabit Ethernet transceiver and two corresponding B or C outputs.
• Integrated Power Down input that enables standby mode to eliminate external power switches during mobile operation.
• Status indicator LEDs switched directly with Ethernet pairs for visual link status monitoring.
• Enhanced ESD protection ratings including 8kV contact discharge and 11kV human body model protection.

Analog Switches - Special Purpose Applications

• Dual Physical Layer Device sharing to one interface connector
• One controller routing signals to dual connectors for docking stations
• Replacing mechanical relays in low-voltage LAN applications interfacing CAT 5 or CAT 6 unshielded twisted pair cables

Analog Switches - Special Purpose Procurement Notes

Verify the specific ordering suffix against manufacturer documentation before procurement. The 'E' suffix indicates Pb-free and Green compliance, while the 'X' suffix denotes Tape & Reel packaging. Confirm the exact part number matches the required package type and environmental specifications to ensure compatibility with assembly processes.

Analog Switches - Special Purpose Selection Notes

Select this component for designs requiring low bit-to-bit skew and high channel-to-channel noise isolation. Ensure the system logic inputs are driven rail-to-rail up to 3.6V regardless of the VDD supply level. Verify that the application requires a single-supply operation within the 3.0V to 3.6V range and utilizes a 42-contact TQFN footprint.

Analog Switches - Special Purpose Part Context

The PI3L720 belongs to Diodes Incorporated's line of analog switches and multiplexers specifically engineered for Ethernet LAN environments. It serves as a solid-state alternative to mechanical relays, offering high-speed signal routing for 10/100/1000 Base-T standards. The device integrates control logic and LED drivers to simplify board layout in portable and desktop networking equipment.

Analog Switches - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided datasheet.

Analog Switches - Special Purpose FAQ

How does the Power Down (PD) pin function?

The PD pin is active high with an internal pull-down resistor. When set to Logic High, it places the device into a standby Hi-Z state, reducing power consumption.

What is the maximum voltage allowed for logic inputs?

Logic control inputs can be driven up to +3.6V regardless of the VDD supply voltage, allowing for rail-to-rail driving which minimizes power consumption.

What is the typical crosstalk performance?

The device offers very low crosstalk of -75 dB at a frequency of 250 MHz.