HD3SS212ZXHT

Analog Switches - Special Purpose Overview

The HD3SS212ZXHT is a high-speed passive switch manufactured by Texas Instruments, designed for DisplayPort 1.2 applications. It supports switching two full DisplayPort 4-lane ports from one of two sources to a single target location. The device operates on a single 3.3 V supply voltage and features a wide -3dB differential bandwidth exceeding 5.4 GHz. It includes support for Hot Plug Detect (HPD) signal switching and auxiliary signals. The component is housed in a 48-ball nFBGA package measuring 5 mm x 5 mm x 1 mm. It functions within an industrial temperature range of -40°C to 105°C.

Analog Switches - Special Purpose Feature Summary

• Supports 2:1 switching for data rates up to 5.4 Gbps compatible with DisplayPort 1.2 electrical standards
• Includes dedicated switching capability for Hot Plug Detect (HPD) and Auxiliary signals
• Features an output enable pin that disables the switch to minimize power consumption during standby
• Provides excellent dynamic characteristics including low crosstalk and insertion loss at high frequencies

Analog Switches - Special Purpose Applications

• PC motherboards requiring dual GPU selection for a single display sink
• Notebooks and tablets needing video source switching
• Connected peripherals and printers utilizing DisplayPort interfaces

Analog Switches - Special Purpose Procurement Notes

Verify the specific ordering suffix 'ZHT' corresponds to the small tape-and-reel carrier configuration rather than the large reel variant. Confirm the package designation matches the 48-ball nFBGA form factor. Ensure the procurement documentation aligns with the manufacturer's current production status and moisture sensitivity level requirements for surface-mount assembly.

Analog Switches - Special Purpose Selection Notes

Select this component when designing systems that require routing two DisplayPort sources to a single sink while maintaining signal integrity at 5.4 Gbps. Consider the 48-ball nFBGA footprint constraints and the requirement for a 3.3 V logic interface. Evaluate the need for HPD switching functionality and verify that the thermal dissipation capabilities meet the system's operating temperature specifications.

Analog Switches - Special Purpose Part Context

This part belongs to the HD3SS212 series of high-speed multiplexer switches. It shares the same functional block diagram and electrical performance as other variants in the family but differs in packaging quantity and carrier type. The 'ZHT' suffix specifically denotes the small tape-and-reel packaging option intended for automated pick-and-place assembly processes.

Analog Switches - Special Purpose Replacement Considerations

HD3SS212ZXHR

Analog Switches - Special Purpose FAQ

How does the HD3SS212 handle Hot Plug Detect signals?

The device supports HPD switching through a dedicated buffer path. This path requires a 125k Ω pull-down resistor on the HPDC line to function correctly.

What is the power consumption in shutdown mode?

When the Output Enable (OE) pin is driven low, the device enters shut down mode with a typical current consumption of 5 µA.

Can the HD3SS212 be used for protocols other than DisplayPort?

Yes, it can route high-speed signals for protocols such as USB 3.0, provided the differential amplitude is less than 1800 mVpp and the common-mode voltage is below 2.0 V.