Datasheet LTC4308 (Analog Devices) - 6
| Fabricante | Analog Devices |
| Descripción | Low Voltage, Level Shifting Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery |
| Páginas / Página | 16 / 6 — PIN FUNCTIONS. ENABLE (Pin 1):. READY (Pin 5):. SCLOUT (Pin 2):. SDAIN … |
| Formato / tamaño de archivo | PDF / 172 Kb |
| Idioma del documento | Inglés |
PIN FUNCTIONS. ENABLE (Pin 1):. READY (Pin 5):. SCLOUT (Pin 2):. SDAIN (Pin 6):. SCLIN (Pin 3):. SDAOUT (Pin 7):. GND (Pin 4):
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LTC4308
PIN FUNCTIONS ENABLE (Pin 1):
Connection Enable Input. This 0.6V nomi-
READY (Pin 5):
Connection Ready Status Output. This nal threshold input pin enables or disables the LTC4308. open-drain N-channel MOSFET pin pulls low when For normal operation, pull or connect ENABLE high. Driving ENABLE is low, when the startup and connection sequence ENABLE below the 0.45V threshold isolates SDAIN from described in the Operation section has not been completed, SDAOUT, SCLIN from SCLOUT, asserts READY low, and or when the LTC4308 disconnects the input and output prohibits automatic clock and stop bit generation during a pins due to a bus stuck low condition. READY goes high fault condition. A rising edge on ENABLE after a fault has when ENABLE is high and connection is made between the occurred forces a connection between SDAIN, SDAOUT input and output pins. Connect a pull-up resistor, typically and SCLIN, SCLOUT. Connect to VCC if unused. 10k, from this pin to the bus pull-up supply. This pin can be left open if unused.
SCLOUT (Pin 2):
Serial Clock Output. Connect this pin to a SCL bus segment where bus stuck low recovery is desired.
SDAIN (Pin 6):
Serial Data Input. Connect this pin to a SDA A pull-up resistor should be connected between this pin bus segment where isolation from bus stuck low issues is and a bus pull-up supply greater than or equal to VCC. desired. A pull-up resistor should be connected between this pin and a bus pull-up supply greater than 0.9V.
SCLIN (Pin 3):
Serial Clock Input. Connect this pin to a SCL bus segment where isolation from bus stuck low issues is
SDAOUT (Pin 7):
Serial Data Output. Connect this pin to a desired. A pull-up resistor should be connected between SDA bus segment where bus stuck low recovery is desired. this pin and a bus pull-up supply greater than 0.9V. A pull-up resistor should be connected between this pin and a bus pull-up supply greater than or equal to V
GND (Pin 4):
Device Ground. Connect this pin to a ground CC. plane for best results.
VCC (Pin 8):
Supply Voltage Input. Place a bypass capacitor of at least 0.01μF close to VCC for best results.
Exposed Pad (Pin 9, DFN Package Only):
Exposed Pad may be left open or connected to device ground. 4308f 6
PIN FUNCTIONS ENABLE (Pin 1):
Connection Enable Input. This 0.6V nomi-
READY (Pin 5):
Connection Ready Status Output. This nal threshold input pin enables or disables the LTC4308. open-drain N-channel MOSFET pin pulls low when For normal operation, pull or connect ENABLE high. Driving ENABLE is low, when the startup and connection sequence ENABLE below the 0.45V threshold isolates SDAIN from described in the Operation section has not been completed, SDAOUT, SCLIN from SCLOUT, asserts READY low, and or when the LTC4308 disconnects the input and output prohibits automatic clock and stop bit generation during a pins due to a bus stuck low condition. READY goes high fault condition. A rising edge on ENABLE after a fault has when ENABLE is high and connection is made between the occurred forces a connection between SDAIN, SDAOUT input and output pins. Connect a pull-up resistor, typically and SCLIN, SCLOUT. Connect to VCC if unused. 10k, from this pin to the bus pull-up supply. This pin can be left open if unused.
SCLOUT (Pin 2):
Serial Clock Output. Connect this pin to a SCL bus segment where bus stuck low recovery is desired.
SDAIN (Pin 6):
Serial Data Input. Connect this pin to a SDA A pull-up resistor should be connected between this pin bus segment where isolation from bus stuck low issues is and a bus pull-up supply greater than or equal to VCC. desired. A pull-up resistor should be connected between this pin and a bus pull-up supply greater than 0.9V.
SCLIN (Pin 3):
Serial Clock Input. Connect this pin to a SCL bus segment where isolation from bus stuck low issues is
SDAOUT (Pin 7):
Serial Data Output. Connect this pin to a desired. A pull-up resistor should be connected between SDA bus segment where bus stuck low recovery is desired. this pin and a bus pull-up supply greater than 0.9V. A pull-up resistor should be connected between this pin and a bus pull-up supply greater than or equal to V
GND (Pin 4):
Device Ground. Connect this pin to a ground CC. plane for best results.
VCC (Pin 8):
Supply Voltage Input. Place a bypass capacitor of at least 0.01μF close to VCC for best results.
Exposed Pad (Pin 9, DFN Package Only):
Exposed Pad may be left open or connected to device ground. 4308f 6