PI3DPX8121ZLDEX

Signal Buffers, Repeaters, Splitters Overview

The PI3DPX8121ZLDEX is a 2-to-1 active multiplexer switch for 4-lane DisplayPort links, supporting data rates up to 10Gbps per lane. It accommodates DP1.4 (HBR3) and DP2.0 (UHBR10) standards. The device integrates a linear Redriver with LTTPR support, featuring CTLE equalizers at the inputs to reduce ISI jitters and compensate channel loss. Maximum equalizer gain controls reach +10dB at 5GHz (DP2.0) and +8.5dB at 4.05GHz (DP1.4). It operates on a single 3.3V +/-0.3V supply within a commercial temperature range of 0°C to +70°C. The component is housed in a 40-pin 3 x 6mm TQFN package.

Signal Buffers, Repeaters, Splitters Feature Summary

• Supports 2-to-1 mux switching for 4-lane DisplayPort operation with data rates up to 10Gbps per lane
• Integrates LT-tunable linear Redriver design compatible with LTTPR redriver data path types
• Features quad-level pin strap control for equalizer gain, flat gain, and output swing linearity selection
• Includes input signal detection logic for automatic power saving mode activation

Signal Buffers, Repeaters, Splitters Applications

• Laptop and Desktop PCs
• Workstation and Server Systems
• Docking, KVM and PC Peripherals
• Display Monitors

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm packaging configuration. The ZLD designation indicates a 40-pin 3 x 6mm TQFN package. Confirm RoHS compliance status and lead-free definitions if required by specific regional regulations or internal quality standards before finalizing procurement orders.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component for designs requiring 2-to-1 switching between two DisplayPort sources while maintaining signal integrity via integrated linear Redriver capabilities. Ensure the system supports the required 3.3V power supply and operates within the specified commercial temperature range. Verify that the pin-strapped control logic aligns with the board's hardware configuration for optimal equalizer and gain settings.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to Diodes Incorporated's PI3DPX series of active multiplexer switches and linear Redrivers. It is designed to address signal degradation in high-speed DisplayPort interfaces. The device complements other interface solutions by providing transparent PHY repeater functionality and flexible tuning options for complex channel environments.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Consult official substitution guides for verified alternatives. Generic replacements may lack specific LTTPR compatibility or identical pin-strapping configurations. Verify electrical parameters and package dimensions match before implementation.

Signal Buffers, Repeaters, Splitters FAQ

What is the maximum equalizer gain supported by the PI3DPX8121?

The maximum equalizer gain controls are +10dB for DP2.0 at 5GHz and +8.5dB for DP1.4 at 4.05GHz.

Does the PI3DPX8121 support Link Training Transparent PHY Repeater (LTTPR)?

Yes, the device features an LT-tunable capability that supports the LTTPR redriver data path type.

How is the equalizer gain and flat gain configured?

Configuration is achieved through a combinational logic table using a pin strap method for quad-level control of equalizer gain, flat gain, and output swing linearity.