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LTC4309 Datasheet(PDF) 5 Page - Linear Technology |
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LTC4309 Datasheet(HTML) 5 Page - Linear Technology |
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5 / 20 page  LTC4313-1/LTC4313-2/ LTC4313-3 5 4313123f pin FuncTions ENABLE (Pin 1): Connection Enable Input. When driven low, the ENABLE pin isolates SDAIN and SCLIN from SDAOUT and SCLOUT, asserts READY low, disables rise time accelerators and inhibits automatic clock and stop bit generation during a stuck low fault condition. When driven high, the ENABLE pin connects SDAIN and SCLIN to SDAOUT and SCLOUT after a stop bit or bus idle has been detected on both busses. Driving ENABLE high also enables automatic clock generation during a stuck low fault condition. During a stuck low fault condition, a risingedgeontheENABLEpinforcesaconnectionbetween SDAIN and SDAOUT and SCLIN and SCLOUT. When using the LTC4313 in a Hot Swap™ application with staggered connector pins, connect a 10k resistor between ENABLE and GND to ensure correct functionality. Connect to VCC if unused. SCLOUT (Pin 2): Serial Bus 2 Clock Input/Output. Connect this pin to the SCL bus segment where stuck low recovery is desired. Connect an external pull-up resistor or current sourcebetweenthispinandthebussupply.Thebussupply needs to be ≥ VCC for the LTC4313-1 and LTC4313-2, but not for the LTC4313-3. Refer to the Applications Informa- tion section for more details. Do not leave open. SCLIN (Pin 3): Serial Bus 1 Clock Input/Output. Connect this pin to the SCL line on the upstream bus. Connect an external pull-up resistor or current source between this pin and the bus supply. The bus supply needs to be ≥ VCC for the LTC4313-1 and LTC4313-2, but not for the LTC4313-3. Refer to the Applications Information section for more details. Do not leave open. GND (Pin 4): Device Ground. READY (Pin 5): Connection Ready Status Output. This open drain N-channel MOSFET output pulls low when the input and output sides are disconnected. READY is pulled high when ENABLE is high and a connection has been established between the input and output. Connect a pull-up resistor, typically 10k from this pin to the bus pull-up supply. Leave open or tie to GND if unused. SDAIN (Pin 6): Serial Bus 1 Data Input/Output. Connect this pin to the SDA line on the upstream bus. Connect an externalpull-upresistororcurrentsourcebetweenthispin and the bus supply. The bus supply needs to be ≥ VCC for the LTC4313-1 and LTC4313-2, but not for the LTC4313-3. Refer to the Applications Information section for more details. Do not leave open. SDAOUT (Pin 7): Serial Bus 2 Data Input/Output. Connect this pin to the SDA bus segment where stuck low recovery is desired. Connect an external pull-up resistor or current sourcebetweenthispinandthebussupply.Thebussupply needs to be ≥ VCC for the LTC4313-1 and LTC4313-2, but not for the LTC4313-3. Refer to the Applications Informa- tion section for more details. Do not leave open. VCC (Pin 8): Power Supply Voltage. Power this pin from a supply between 2.9V and 5.5V. Bypass with at least 0.01µF to GND. Exposed Pad (Pin 9, DD8 Package Only): Exposed pad may be left open or connected to device GND. |
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Similar Description - LTC4309 |
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