TPD12S016_14 Datasheet, PDF (1/28 Pages) Texas Instruments – HDMI Companion Chip with I2C Level Shifting Buffer, 12 Channel ESD, and Current-Limit Load Switch

TPD12S016
www.ti.com
SLLSE96D – SEPTEMBER 2011 – REVISED DECEMBER 2012
HDMI Companion Chip with I²C Level Shifting Buffer, 12 Channel ESD, and
Current-Limit Load Switch
Check for Samples: TPD12S016
FEATURES
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• Conforms to HDMI Compliance Tests without
any External Components
• Supports HDMI1.4 Data Rate
• Match Class D and Class C Pin Mapping
• 8-Channel ESD Lines for Four Differential
Pairs with Ultra-low Differential Capacitance
Matching (0.05pF)
• On-chip Load Switch with 55mA Current Limit
Feature at the HDMI 5V_OUT Pin
• Auto-direction Sensing I²C Level Shifter with
One-shot Circuit to Drive Long HDMI Cable
(750pF Load)
• Back-drive Protection on HDMI Connector Side
Ports
• Integrated Pull-up and Pull-down Resistors per
HDMI Specification
• ±8KV Contact Discharge Rating at all External
Pins
• Space Saving 24-pin RKT Package and 24-
TSSOP Package
APPLICATIONS
• Cell Phones
• eBook
• Portable Media Players
• Set-top Box
DESCRIPTION
The TPD12S016 is a single-chip HDMI interface device with auto-direction sensing I2C voltage level shift buffers,
load switch, and integrated high-speed ESD protection clamps. The device pin mapping matches the HDMI Type
D connector with four differential pairs. This device offers eight low-capacitance ESD clamps, allowing HDMI 1.4
data rates. The integrated ESD circuits provide good matching between each differential signal pair, which allows
an advantage over discrete ESD solutions where variations between ESD protection clamps degrade the
differential signal quality. The TPD12S016 provides a current limited 5 V output (5V_OUT) for sourcing the HDMI
power line. The current limited 5 V output supplies up to 55 mA to the HDMI receiver. The control of 5V_OUT
and the hot plug detect (HPD) circuitry is independent of the LS_OE control signal, and is controlled by the
CT_HPD pin. This independent CT_HPD control enables the detection scheme (5V_OUT and HPD) to be active
before enabling the HDMI link. An internal 3.3V node powers the CEC pin eliminating the need for a 3.3V supply
on board.
The TPD12S016 integrates all the external termination resistors at the HPD, CEC, SCL, and SDA lines. There
are three non-inverting bi-directional translation circuits for the SDA, SCL, and CEC lines. Each have a common
power rail (VCCA) on the A side from 1.1 V to 3.6V. On the B side, the SCL_B and SDA_B each have an internal
1.75 kΩ pull up connected to the 5 V rail (5V_OUT). The SCL and SDA pins meet the I2C specification and drive
up to 750 pF capacitive loads exceeding the HDMI1.4 specifications. The CEC_B pin has an internal 27 kΩ pull
up to the internal 3.3 V supply rail. The HPD_B port has a glitch filter to avoid false detection due to plug
bouncing during the HDMI connector insertion.
The TPD12S016 offers reverse current block feature at the 5V_OUT pin. In the fault conditions, such as when
two HDMI transmitters connect to the same HDMI cable, the TPD12S016 ensures that the system is safe from
powering up through external HDMI transmitter. The Dx, CLKx, SCL_B, SDA_B, CEC_B pins also feature
reverse-current blocking when the system is powered off.
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011–2012, Texas Instruments Incorporated