PI3VST01ZEEX Diodes Incorporated

8 7 6 5 7 6 10 9 8 1 2 3 4 5 1 2 3 4 V V V PI3VST01 HPD signal Generator for VGA Description Features e VTh GA connector does not have a hot-plug pin to tell the sys - Hot Plug Detect Signal Generator for VGA connectors tem that a monitor is connected. More recent video standards, Generates hot plug output signal telling system when such as HDMI and DisplayPort, save power by adding a hot-plug monitor is present or not pin which allows graphics outputs to be powered down when a Power Supply, 3.3V and 5.0V monitor is not connected. ESD tolerance on pin 7 is up to +/-4kV contact per IEC61000-4-2 specification Pericoms PI3VST01 HPD signal generator generates a monitor -3dB BW of 1.7GHz (typ) detection signal from a VGA source connector to tell the VGA 4.75 Ohm On Resistance with 0.5 Ohm flatness (typ) source if an external monitor is connected or not. Low input/output capacitance (Con = 4.5pF, typ) Packaging (Pb-free and Green): PI3VST01 allows notebook makers to shut off the VGA DAC when a monitor is not connected, thus saving 170 mW per DAC. 8-contact MSOP (U) PI3VST01 dissipates only 0.66 mW. 10-contact TDFN (ZE) e mTh onitor detection scheme within the PI3VST01 will not affect normal operation of the video driver. Block Diagram Pin Configuration-U8 (Top View) HPD_OUT GND V V DD3 DD5 BOUT BIN BOUT BIN Rref VSYNC Logic HPD_OUT Pin Configuration-ZE10 (Top View) VSYNC Detector Control HPD_OUT GND RREF VDD5 VDD3 NC NC BOUT BIN Rref VSYNC 01/04/13 12-0303 1PI3VST01 HPD signal Generator for VGA Pinout Table ZE-10 Pin # U-8 Pin # Pin Name I/O Type Description 1 1 GND Ground Ground 2 2 V Power 5V 10% power rail DD5 4 3 BIN I Blue input from VGA source 5 4 VSYNC I Ver t ic a l Sy nch roni z at ion sig na l, i nter na l 250KOh m pu l ldow n Open drain output, telling the system the status of the external VGA 10 8 HPD_OUT O monitor. If VGA monitor is present, this pin will be pulled low. If VGA monitor is not present, this pin will be Hi-z 9 7 Power 3.3V 10% power rail V DD3 7 6 BOUT O Blue output to VGA connector Determines IC mode in terms of impedance detection levels. con- 6 5 Rref I/O nect to external resistor to GND. Resistor values can be determined by looking at truth table 01/04/13 12-0303 2