STMicroelectronics HDMI2C4-5F2

Overview

HDMI2C4-5F2 from STMicroelectronics is an integrated ESD protection and signal conditioning IC for HDMI™ source control links (DDC/HPD/CEC), supporting HDMI 1.4/2.0/2.1 standards, operating from −40 °C to +85 °C, featuring 8 kV IEC 61000-4-2 contact ESD protection on cable-side pins, dynamic pull-up on DDC bus, and 325 mA short-circuit protected 5V_OUT output - deployed in consumer HDMI sources including tablets, game consoles, and Blu-ray players.

For engineers reviewing the HDMI2C4-5F2 datasheet, HDMI2C4-5F2 pinout, HDMI2C4-5F2 application, or HDMI2C4-5F2 equivalent, this device delivers verified bidirectional level-shifting for SDA/SCL (1.8 V ↔ 5 V), HPD signal conditioning with 15–25 µA pull-down, backdrive blocking via ENABLE_IC, and WLCSP-12 package routing compatibility - critical for HDMI CTS compliance and robust long-cable operation.

Technical Context

The HDMI2C4-5F2 integrates three functional blocks: (1) dual bidirectional DDC buffers with dynamic pull-up, comparator-based clock stretching support, and input hysteresis (1.0–1.3 V on bus side); (2) HPD interface with threshold detection (V_{TH_HPD} = 1.0–1.7 V) and level-shifted ASIC-side output (VOH ≥ 80% VDD_IC); and (3) 5V power path with UVLO (3.5–4.1 V), thermal shutdown (120–150 °C), and low-drop current limiting (42–125 mV dropout at 250 mA).

All blocks share a unified enable architecture: ENABLE_IC deactivates 5V_OUT (pulling it down via 1.1–1.7 kΩ), forces HPD_IC low, and blocks backdrive current from SDA/SCL/5V_OUT - while maintaining <1 µA leakage and 95 µA quiescent draw in disabled state, enabling true system-level standby power optimization.

Key Specifications

Pinout & Package

Package: 12-bump WLCSP (1490 ± 50 × 2130 ± 50 µm, 500 ± 10 µm pitch, 605 ± 55 µm thickness), RoHS-compliant ECOPACK®.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar HDMI source control-stage protection applications.

Compared with TPD12S521 and PTN3366, HDMI2C4-5F2 uniquely combines DDC/HPD/CEC integration, dynamic pull-up, 325 mA 5V protection, and ENABLE-controlled backdrive blocking in a 3.17 mm² WLCSP - delivering superior CTS compliance, power efficiency, and layout simplicity for modern HDMI source designs.

Availability

HDMI2C4-5F2 is available at Aetrix Electronics and suitable for tablet HDMI interfaces, game console DDC robustness enhancement, and Blu-ray player hot-plug management requiring stable component supply across extended temperature ranges and high-volume production cycles.

Supply support for HDMI2C4-5F2 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, and analog/mixed-signal devices for automotive, industrial, and consumer markets.

HDMI2C4-5F2 belongs to ST's HDMI interface protection product line, engineered specifically to simplify HDMI CTS certification for source devices by integrating ESD, level-shifting, current limiting, and enable control into one compact WLCSP package.

FAQ

What is the maximum cable capacitance HDMI2C4-5F2 can drive on the DDC bus?

HDMI2C4-5F2 is designed to drive up to 750 pF total DDC bus capacitance - matching the HDMI 1.4 specification maximum for combined cable and sink input capacitance. Its integrated dynamic pull-up ensures I²C rise time remains ≤500 ns even under this worst-case load, preserving signal integrity and preventing communication failures during EDID reads or HDCP handshakes.

How does the ENABLE_IC pin affect HPD and 5V_OUT functionality?

When ENABLE_IC is low, HDMI2C4-5F2 pulls 5V_OUT down via a 1.1–1.7 kΩ internal resistor and forces HPD_IC to a logic-low state, effectively disabling both outputs. This blocks backdrive current from the HDMI cable into the ASIC and eliminates standby power draw from the 5V rail - enabling true system-level power gating without external MOSFETs or logic.

Does HDMI2C4-5F2 support HDMI 2.1 features like Dynamic HDR or eARC?

HDMI2C4-5F2 supports HDMI 2.1 at the control-link layer only - it fully complies with DDC, HPD, and CEC requirements of HDMI 2.1 specifications, including enhanced EDID handling and faster hot-plug detection. It does not process TMDS or eARC audio/video data; those require separate high-speed signal conditioners or retimers.

What is the recommended decoupling capacitance for VDD_5V and VDD_IC?

Per the datasheet, use 100 nF ceramic capacitors (C1, C2) close to VDD_5V and VDD_IC pins for general decoupling, plus a 1 µF, 10 V low-ESR capacitor (C3) on the 5V_OUT line. The 1 µF capacitor is mandatory to stabilize the current limiter during short-circuit events and ensure proper UVLO operation - omitting it risks premature OCP triggering or unstable 5V delivery.