TPD12S521_16 Datasheet, PDF (1/19 Pages) Texas Instruments – Single-Chip HDMI Transmitter Port Protection and Interface Device

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TPD12S521
SLVS639F – OCTOBER 2007 – REVISED FEBRUARY 2016
TPD12S521 Single-Chip HDMI Transmitter Port Protection and Interface Device
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
V_LV
5V
5 V 3.3 V
100 kO
47 kO
(x 3)
10 kO
5V_SUPPLY 5V_OUT
LV_SUPPLY ESD_BYP
1.7 kO 1.7 kO
27 kO
HDMI
Transmitter
CEC
DCLK
DDAT
HPD
TMDS LINES
TPD12S521
TPD12S521
TMDS LINES
0.1 …F
CEC_IN CEC_OUT
DCLK_IN DCLK_OUT
DDAT_IN DDAT_OUT
HPD_IN HPD_OUT
0.1 …F
0.1 …F
0.1 …F 10 kO
HDMI
Connector
CEC
NC
DCLK
DDAT
5V
HPD
1
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.