HD3SS212 5.4Gbps DisplayPort 1.2 2-to-1 Differential Switch

1 Features

• Compatible with DisplayPort 1.2 electrical standard

• 2:1 switching supporting data rates up to 5.4Gbps

• Supports HPD switching

• Wide -3dB differential BW of over 5.4 GHz

• Excellent dynamic characteristics (at 2.7GHz)

– Crosstalk = –50dB

– Isolation = –22dB

– Insertion loss = –1.4dB

– Return loss = –11 dB

– Max bit-bit skew = 4 ps

• VDD operating range 3.3 V ±10%

• Small 5 mm x 5 mm x 1 mm, 48-ball nFBGA

package

• Output enable (oe) pin disables switch to save

power

• Power consumption

– HD3SS212 <10mW (standby <30µW when OE

= L)

2 Applications

• PC & notebooks

• Tablets

• Connected peripherals & printers

3 Description

The HD3SS212 is a high-speed passive switch

capable of switching two full DisplayPort 4 lane ports

from one of two sources to one target location in an

application.

For

DisplayPort

applications

that

HD3SS212 also supports switching of the Auxiliary

(AUX) and Hot Plug Detect (HPD) signals. HPD path

is a buffer which requires a 125kΩ pull-down resistor

on the HPDC line.

A typical application would be a mother board that

includes two GPUs that need to drive one DisplayPort

sink. The GPU is selected by the Dx_SEL pin. The

HD3SS212 is offered in a 48-ball bfBGA package and

specified to operate from a single supply voltage of

3.3V over full industrial temperature range of –40°C to

105°C.

Device Information (1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

HD3SS212

nFBGA (48)

5.00 mm x 5.00 mm

(1)

For all available packages, see the orderable addendum at

the end of the datasheet.

Dx_SEL

HPDA

HPDB

VDD

OE

GND

AUXA (p)

AUXA (n)

AUXB (p)

AUXB (n)

DAz (p)

DAz (n)

DBz (p)

DBz (n)

SEL

SEL

SEL

HD3SS212

SEL = 0

SEL = 1

4

4

4

4

4

4

(z = 0,1, 2or3)

HPDC

DCz (p)

DCz (n)

AUXC (p)

AUXC (n)

SEL = 1

SEL = 0

SEL = 1

SEL = 0

125kW

Functional Block Diagram

www.ti.com

HD3SS212

SLAS822D – DECEMBER 2011 – REVISED DECEMBER 2020

Copyright © 2020 Texas Instruments Incorporated

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HD3SS212

SLAS822D – DECEMBER 2011 – REVISED DECEMBER 2020

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.