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LTC4311 Datasheet(PDF) 5 Page - Linear Technology |
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LTC4311 Datasheet(HTML) 5 Page - Linear Technology |
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5 / 16 page  LTC4317 5 4317fa For more information www.linear.com/LTC4317 Typical perForMance characTerisTics SDAOUT Fall Delay vs Bus Capacitance SDAOUT Fall Time vs Temperature SDAOUT Fall Time vs Bus Capacitance TA = 25°C, VCC = 3.3V unless otherwise noted. pin FuncTions XORL1/XORL2: Translator XOR Lower Nibble Configura- tion Input. The DC voltage at this pin configures the lower 4-bit nibble of the address translation byte. Tie the pin to an external resistive divider connected between VCC and GND to set the desired DC voltage. XORH1/XORH2: Translator XOR Upper Nibble Configura- tion Input. The DC voltage at this pin configures the upper 3-bit nibble of the address translation byte. Tie the pin to an external resistive divider connected between VCC and GND to set the desired DC voltage. Connect this pin to VCC to activate pass-through mode. See Application Informa- tion section for more details. ENABLE1/ENABLE2: Enable Input. If ENABLE pin is low, the address translation is disabled, SDAIN is disconnected from SDAOUT, and SCLIN is disconnected from SCLOUT. A low to high transition on ENABLE restarts the configura- tion of the address translation byte and also enables the address translation. Connect to VCC if unused. Exposed Pad: Exposed pad may be left open or connected to device GND. GND: Device Ground. READY1/READY2: Ready Status Output. This is an open drain output to indicate that the device is ready for address translation. The pin releases high when the LTC4317 has completed configuration of the address translation byte, SDAIN is connected to SDAOUT and SCLIN is connected to SCLOUT.Connectapull-upresistor,typically10k,fromthispin to the bus pull-up supply. Leave open or tie to GND if unused. SCLIN: Input Bus Clock Input and Output. Connect this pin to the SCL line on the master side. An external pull-up resistor or current source is required. SCLOUT1/SCLOUT2: Output Bus Clock Input and Output. ConnectthispintotheSCLlineontheslaveside.Anexternal pull-up resistor or current source is required. Connect to VCC through a pull-up resistor if unused. SDAIN: Input Bus Data Input and Output. Connect this pin to the SDA line on the master side. An external pull-up resistor or current source is required. SDAOUT1/SDAOUT2: Output Bus Data Input and Output. Connect this pin to the SDA line on the slave side. An external pull-up resistor or current source is required. Connect to VCC through a pull-up resistor if unused. VCC: Power Supply Input (2.25V to 5.5V). If the supply voltages for the input and output buses are different, con- nect this pin to the lower supply. If the input and output supplies have the same nominal value and with tolerance less than or equal to ±10%, connect VCC to either supply. Bypass with at least 0.1µF to GND. CBUS (pF) 0 300 250 275 150 200 175 225 125 100 200 600 400 800 4317 G07 1000 VCC = 3.3V VCC = 5V VCC = 2.25V TEMPERATURE (°C) –50 120 100 60 80 40 20 0 50 –25 25 75 4317 G08 100 C = 100pF VCC = 5V VCC = 2.25V VCC = 3.3V CBUS (pF) 0 120 100 60 80 40 20 200 600 400 800 4317 G09 1000 VCC = 5V VCC = 2.25V VCC = 3.3V |
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