STMicroelectronics STDVE003ABTR

Overview

STDVE003ABTR from STMicroelectronics is a 3.4 Gbps, 3:1 adaptive TMDS/HDMI signal equalizer and switch with integrated 50 Ω input termination, I²C DDC repeater, and HPD routing. It supports HDMI v1.3, operates up to 340 MHz clock rate, delivers ≤1.5 ps output skew, and functions across –40°C to +85°C for HDMI receiver front-end signal conditioning in multi-source TV systems.

For engineers reviewing the STDVE003ABTR datasheet, STDVE003ABTR pinout, STDVE003ABTR application, or STDVE003ABTR equivalent, this device addresses high-speed signal integrity challenges in HDMI switching-specifically intersymbol interference (ISI) compensation over 1–25 m cables, low-jitter TMDS regeneration, DDC bus extension, and hot-plug detector (HPD) arbitration across three input ports.

Technical Context

The STDVE003ABTR integrates a fully adaptive 4-channel equalizer that dynamically compensates frequency-dependent loss using gain profiles ranging from +3 dB at 225 MHz to +16 dB at 1650 MHz (EQ_BOOST = L), with boosted response (+6.5–+21.5 dB) when EQ_BOOST = H. Its 3:1 TMDS switch uses low-capacitance SPDT architecture with flow-through pinout to minimize internal jitter and propagation delay.

It embeds an I²C DDC repeater supporting 0–400 kHz clocking, 5.3 V-tolerant SDA/SCL I/Os, and lock-up-free operation, while routing HPD signals from selected input port to HPD_SINK and driving unused HPD outputs low. All TMDS inputs feature on-die 50 Ω ±5% termination, eliminating external resistors and ensuring impedance-matched signal acquisition.

Key Specifications

Pinout & Package

TQFP80 (12 × 12 mm, 0.5 mm pitch) package with exposed thermal pad; flow-through layout minimizes trace length mismatch and parasitic coupling between TMDS channels.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar HDMI signal conditioning and switching applications.

Compared with TI TDP158 and PI3HDX1204A, STDVE003ABTR uniquely combines adaptive equalization, integrated 50 Ω termination, and full DDC/HPD switching in one TQFP80 package-enabling single-chip HDMI signal conditioning for cost-sensitive, space-constrained consumer electronics without external support components.

Availability

STDVE003ABTR is available at Aetrix Electronics and suitable for advanced digital TV, set-top box aggregator, HDMI switching hub, and professional video monitor applications requiring stable component supply and long-lifecycle support.

Supply support for STDVE003ABTR 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 specializing in analog, power, and automotive ICs, with broad portfolio coverage across consumer, industrial, and automotive markets.

STDVE003ABTR belongs to ST's HDMI interface and signal conditioning product line, designed specifically to solve signal integrity degradation in multi-source HDMI consumer electronics-prioritizing integration, compliance, and ease of layout.

FAQ

What is the function of the REXT pin?

The REXT pin connects to a 4.7 kΩ ±1% precision resistor to ground, setting the output current of the TMDS drivers to ensure compliant 2.8 Vpp differential output into 100 Ω loads. This external resistor directly calibrates driver strength and must be placed within 5 mm of the pin with low-inductance routing to maintain signal fidelity.

How does EQ_BOOST affect equalizer performance?

EQ_BOOST = L enables default adaptive gain (e.g., +3 dB at 225 MHz, +16 dB at 1650 MHz) optimized for 1–25 m cables. EQ_BOOST = H increases gain across all frequencies (e.g., +6.5 dB at 225 MHz, +21.5 dB at 1650 MHz) to compensate for extreme attenuation in cables longer than 25 m or highly lossy PCB traces.

Can STDVE003ABTR operate without external 50 Ω termination resistors?

Yes-the device integrates precise 50 Ω ±5% termination resistors on all TMDS input channels, eliminating the need for external resistors. This reduces BOM count, PCB area, and layout complexity while improving impedance matching accuracy compared to discrete solutions.

Is the I²C DDC repeater compatible with standard HDMI EDID handshaking?

Yes-the integrated DDC repeater supports full bidirectional I²C communication at 0–400 kHz, passes EDID reads/writes transparently between selected source and sink, and features 5.3 V-tolerant I/Os and lock-up-free operation-ensuring reliable HDMI handshake and HDCP authentication across all three input ports.