5 V

27 kO

1.7 kO

TPD12S521

47 kO

(x 3)

100 kO

10 kO

1.7 kO

TMDS LINES

TMDS LINES

HDMI

Transmitter

TPD12S521

HDMI

Connector

10 kO

0.1 …F

CEC

DCLK

DDAT

HPD

CEC

DCLK

DDAT

HPD

5 V

CEC_IN

DCLK_IN

DDAT_IN

HPD_IN

CEC_OUT

DCLK_OUT

DDAT_OUT

HPD_OUT

5V_OUT

ESD_BYP

5V_SUPPLY

LV_SUPPLY

NC

0.1 …F

0.1 …F

0.1 …F

3.3 V

5 V

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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.

TPD12S521

SLVS639F – OCTOBER 2007 – REVISED FEBRUARY 2016

TPD12S521 Single-Chip HDMI Transmitter Port Protection and Interface Device

1

1 Features

1

•

IEC 61000-4-2 Level 4 ESD Protection

–

±8-kV Contact Discharge on External Lines

•

Single-Chip ESD Solution for HDMI Driver

•

On-Chip Current Regulator with 55-mA Current

Output

•

Supports All HDMI 1.3 and HDMI 1.4b Data Rates

(–3 dB Frequency > 3 GHz)

•

0.8-pF Capacitance for the High Speed TMDS

Lines

•

0.05-pF Matching Capacitance Between the

Differential Signal Pair

•

38-Pin TSSOP Provides Seamless Layout Option

with HDMI Connector

•

Backdrive Protection

–

TMDS_D[2:0]+/–

–

TMDS_CK+/–

–

CE_REMOTE_OUT

–

DDC_DAT_OUT

–

DDC_CLK_OUT

–

HOTPLUG_DET_OUT

•

Lead-Free Package

2 Applications

•

PCs

•

Consumer Electronics

•

Set-Top Boxes

•

DVD Players

3 Description

The

TPD12S521

is

a

single-chip

electro-static

discharge (ESD) circuit protection device for the high-

definition multimedia interface (HDMI) transmitter

port. While providing ESD protection with transient

voltage suppression (TVS) diodes, the TVS protection

adds little or no additional glitch in the high-speed

differential

signals.

The

high-speed

transition

minimized

differential

signaling

(TMDS)

ESD

protection lines add only 0.8-pF capacitance.

The low-speed control lines offer voltage-level shifting

to eliminate the need for an external voltage level-

shifter IC. The control line TVS diodes add 3.5-pF

capacitance to the control lines. The 38-pin DBT

package offers a seamless layout routing option to

eliminate the routing glitch for the differential signal

pairs. The DBT package pitch (0.5 mm) matches with

the HDMI connector pitch. In addition, the pin

mapping follows the same order as the HDMI

connector pin mapping. The TPD12S521 provides an

on-chip current limiting switch with output ratings of

55 mA at pin 38. This enables HDMI receiver

detection even when the receiver device is powered

off.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPD12S521

TSSOP (38)

6.40 mm × 9.70 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

4 Circuit Protection Scheme