Texas Instruments TPD12S016RKTR

Overview

TPD12S016 from Texas Instruments is an HDMI companion IC integrating auto-direction-sensing I²C level shifters (SCL/SDA/CEC), a 55-mA current-limited 5-V load switch (5V_OUT), eight-channel low-capacitance ESD protection for TMDS differential pairs, and integrated HPD circuitry with glitch filtering. It operates from 1.2 V to 3.3 V VCCA and 4.5–5.5 V VCC5V, supports HDMI 1.4 data rates up to 3.4 Gbps, and matches Class D/C HDMI connector pin mapping for direct interface to HDMI connectors in portable media devices.

For engineers reviewing the TPD12S016 datasheet, TPD12S016 pinout, TPD12S016 application, or TPD12S016 equivalent, key selection considerations include its 0.05-pF differential capacitance per TMDS pair, ±8-kV IEC 61000-4-2 contact ESD rating, 750-pF I²C bus drive capability, reverse-current blocking on 5V_OUT and B-side control lines, and independent CT_HPD-controlled hot-plug detection enabling power-up before link enable.

Technical Context

The TPD12S016 implements three bidirectional voltage-level translators - one each for SCL/SDA and CEC - with A-side referenced to VCCA (1.1–3.6 V) and B-side referenced to 5V_OUT (SCL_B/SDA_B) or internal 3.3-V LDO (CEC_B). Each translator includes hysteresis (40 mV on A-side, 300–400 mV on B-side) and transient-boosted pullup current (15 mA) for fast rise times on capacitive HDMI cables.

Its ESD protection comprises eight matched low-capacitance clamps (Dx+, Dx−, CLK+, CLK−) with dynamic resistance ≤1 Ω and breakdown voltage ≥6.5 V, ensuring signal integrity across all four TMDS differential pairs. The integrated 55-mA load switch features thermal shutdown (TRIP = 140 °C, HYST = 12 °C), 35–50 mV dropout at 55 mA, and <8 µs turn-off time, with reverse-current blocking active when system power is off.

Key Specifications

Pinout & Package

The TPD12S016 is available in a 24-pin RKT (UQFN, 4.0 mm × 2.0 mm) and PW (TSSOP, 7.8 mm × 6.4 mm) package. Both packages share identical pin functions and are pin-to-pin compatible.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar HDMI interface protection and level-shifting applications.

Compared with TPD12S521RGER and MAX3355EEBE+T, the TPD12S016 uniquely integrates HDMI 1.4-compliant level shifting, current-limited 5-V power, and matched ESD protection in a single 24-pin package-reducing component count by ≥12 while guaranteeing interoperability without external tuning.

Availability

TPD12S016 is available at Aetrix Electronics and suitable for mobile HDMI transmitter interfaces, set-top box source ports, portable media player docking stations, and embedded display interfaces requiring stable component supply, guaranteed long-term availability, and full traceability.

Supply support for TPD12S016 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in interface, power management, and signal chain technologies.

The TPD12S016 belongs to TI's HDMI interface protection product line, designed specifically to simplify HDMI implementation in battery-powered and space-constrained portable electronics by integrating ESD protection, level shifting, power switching, and HPD logic into one chip.

FAQ

What is the primary function of the TPD12S016 in an HDMI interface design?

The TPD12S016 serves as a fully integrated HDMI companion IC that combines ESD protection for all TMDS differential pairs, bidirectional I²C/CEC level shifting between controller and connector voltage domains, a current-limited 5-V load switch for HDMI power delivery, and glitch-filtered hot-plug detection. Its purpose is to replace 12+ discrete components while ensuring HDMI 1.4 compliance out-of-the-box-making it ideal for portable HDMI transmitters like smartphones and media players. The TPD12S016 eliminates the need for external pullup resistors, TVS diodes, and MOSFET-based load switches.

Does the TPD12S016 support HDMI 2.0 or higher data rates?

No, the TPD12S016 is specified and validated for HDMI 1.4 operation up to 3.4 Gbps (1080p60). Its TMDS pin capacitance (1.2 pF for RKT, 1.0 pF for PW) and insertion loss profile are optimized for this bandwidth. For HDMI 2.0 (6 Gbps) or HDMI 2.1 support, TI recommends the TPD12S521RGER, which offers lower capacitance, higher ESD robustness, and extended frequency response. The TPD12S016 does not meet the electrical requirements for HDMI 2.0 compliance testing.

How does the CT_HPD pin differ from LS_OE in controlling the TPD12S016?

The CT_HPD pin independently enables the 5V_OUT power rail and HPD_B output circuitry-allowing HDMI connector power and hot-plug detection to activate before the HDMI link is enabled. In contrast, LS_OE controls only the bidirectional level shifters (SCL/SDA/CEC). This separation ensures safe hot-plug sequencing: the display can be detected and powered *before* DDC communication begins. The TPD12S016 uses CT_HPD for system-level power management and LS_OE for protocol-layer interface control-both referenced to VCCA but serving distinct functional domains.

Can the TPD12S016 be used with a 1.2-V HDMI controller supply (VCCA)?

Yes, the TPD12S016 supports VCCA from 1.1 V to 3.6 V, including 1.2-V operation. Its level shifters maintain valid VOH/VOL thresholds across this range-for example, SCL_A/SDA_A VOH = 0.8 × VCCA and VOL = 0.17 × VCCA at 1.2 V yields 0.96 V and 0.20 V respectively, meeting I²C standard margins. All timing parameters (propagation delay, rise/fall time) are characterized down to 1.2 V. Therefore, the TPD12S016 is fully compatible with modern low-voltage application processors, and the TPD12S016 datasheet confirms operation at 1.2 V in Section 6.3.

What protection does the TPD12S016 provide against reverse current flow?

The TPD12S016 provides reverse-current blocking on four critical paths: the 5V_OUT output pin, and the SCL_B, SDA_B, and CEC_B pins. When system power is removed (VCCA = 0 V, VCC5V = 0 V), these pins enter high-impedance states with leakage current limited to ±5 µA (SCL_B/SDA_B/CEC_B) or ±1.8 µA (5V_OUT), preventing back-driving from a connected HDMI source. This protects the host system from unintended power-up or latch-up during cable disconnection or multi-source scenarios. The TPD12S016 implements this via internal MOSFET-based blocking circuits-not passive diodes-ensuring minimal forward voltage drop during normal operation.