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2007–REVISED NOVEMBER 2008
SINGLE-CHIP HDMI TRANSMITTER PORT PROTECTION AND INTERFACE DEVICE
· Single-Chip ESD Solution for High-Definition
Multimedia Interface (HDMI) Driver
· Supports HDMI 1.3 Data Rate
(–3 dB Frequency > 3 GHz)
· 0.8-pF Capacitance for High-Speed Transition
Minimized Differential Signaling (TMDS) Lines
· 0.05-pF Matching Capacitance Between the
Differential Signal Pair
· Integrated Level Shifting for the Control Lines
· ±8-kV Contact ESD Protection on
External Lines
· 38-Pin Thin Shrink Small-Outline Package
(TSSOP) Provides Seamless Layout Option
With HDMI Connector
· Backdrive Protection
· Lead-Free Package
· On-Chip Current Regulator With 55-mA
Current Output
· PCs
· Consumer Electronics
· Set-Top Boxes
· DVDRW Players
The TPD12S521 is a single-chip ESD solution for the high-definition multimedia interface (HDMI) transmitter port.
In many cases, the core ICs, such as the scalar chipset, may not have robust ESD cells to sustain system-level
ESD strikes. In these cases, the TPD12S521 provides the desired system-level ESD protection, such as the the
IEC61000-4-2 (Level 4) ESD, by absorbing the energy associated with the ESD strike.
While providing the ESD protection, the TPD12S521 adds little or no additional glitch in the high-speed
differential signals (see Figure 4 and Figure 5). The high-speed transition minimized differential signaling (TMDS)
lines add only 0.9-pF capacitance to the lines. In addition, the monolithic integrated circuit technology ensures
that there is excellent matching between the two-signal pair of the differential line. This is a direct advantage over
discrete ESD clamp solutions where variations between two different ESD clamps may significantly degrade the
differential signal quality.
The low-speed control lines offer voltage-level shifting to eliminate the need for an external voltage level-shifter
IC. The control line ESD clamps add 3.5-pF capacitance to the control lines. The 38-pin DBT package offers
seamless layout routing option to eliminate the routing glitch for the differential signal pair.
The TPD12S521 provides an on-chip regulator with current output ratings of 55 mA at pin 38. This current
enables HDMI receiver detection even when the receiver device is powered off. DBT package pitch (0.5 mm)
matches with HDMI connector pitch. In addition, pin mapping follows the same order as the HDMI connector pin
mapping. This HDMI receiver port protection and interface device is specifically designed for next-generation
HDMI transmitter protection.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Copyright © 2007–2008, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
TMDS_D2+
TMDS_GND
TMDS_D2–
TMDS_D1+
TMDS_GND
TMDS_D1–
TMDS_D0+
TMDS_GND
TMDS_D0–
TMDS_CK+
TMDS_GND
TMDS_CK–
5V_SUPPLY
DDC_DAT_OUT
HOTPLUG_DET_OUT
ESD_BYP
LV Supply LV Supply
CE_REMOTE_IN CE_REMOTE_OUT DDC_DAT_IN
LV Supply LV Supply
DDC_CLK_IN DDC_CLK_OUT HOTPLUG_DET_IN
55-mA