Description
The STHDLS101A is a high-speed high-definition multimedia interface (HDMI) level shifter that converts low-swing AC coupled differential input to HDMI 1.3 compliant open-drain current steering RX-terminated differential output. Through the existing PCI-E pins in the graphics and memory controller hub (GMCH) of PCs or notebook motherboards, the pixel clock provides the required bandwidth (1.65 Gbps, 2.25 Gbps) for the video supporting 720p, 1080i, 1080p with a total of 36-bit resolution. The HDMI is multiplexed onto the PCIe pins in the motherboard where the AC coupled HDMI at 1.2 V is output by GMCH. The AC coupled HDMI is then level shifter by this device to 3.3 V DC coupled HDMI output. The STHDLS101A supports up to 2.7 Gbps, which is enough for 12-bits of color depth per channel, as indicated in HDMI rev 1.3. The device operates from a single 3.3 V supply and is available in a 48-pin QFN package. QFN48 (7 x 7 mm)

Features
■ Converts low-swing alternating current (AC) coupled differential input to high-definition multimedia interface (HDMI) rev 1.3 compliant
■ HDMI level shifting operation up to 2.7 Gbps per lane
■ Integrated 50 Ω termination resistors for AC- coupled differential inputs
■ Input/output transition minimized differential signaling (TMDS) enable/disable
■ Output slew rate control on TMDS outputs to minimize electromagnetic interference (EMI) and eliminate external components such as RC and choke
■ Fail safe outputs for backdrive protection
■ No re-timing or configuration required
■ Inter-pair output skew < 250 ps, intra-pair output skew < 10 ps
■ Single power supply of 3.3 V
■ ESD protection: ±6 KV HBM on all I/O pins
■ Integrated display data channel (DDC) level shifters. Pass-gate voltage limiters allow 3.3 V termination on graphics and memory controller hub (GMCH) pins and 5 V DDC termination on HDMI connector pins
■ Level shifter and configurable output for HPD signal from HDMI/DVI connector
■ Integrated pull-down resistor on HPD_SINK and OE_N inputs

Applications
■ Notebooks, PC motherboards and graphic cards