Datasheet LTC4304 (Analog Devices) - 5

LTC4304
U U U PI FU CTIO S ENABLE (Pin 1):
Connection Enable. This is a digital
READY (Pin 6):
Connection Status Flag. READY provides threshold input pin. For normal operation ENABLE is high. a digital fl ag which indicates the status of the connection Driving ENABLE below 0.8V isolates SDAIN from SDAOUT, circuitry described in the “Connection Circuitry” section. SCLIN from SCLOUT, asserts READY low and disables Connect a resistor of 10k to VCC to provide the pull-up. automatic clocking. A rising edge on ENABLE after a fault
FAULT (Pin 7):
Bus Stuck Low Fault. FAULT is an open has occurred unconditionally forces a connection between drain N-channel MOSFET which pulls low to signal a bus SDAIN, SDAOUT and SCLIN, SCLOUT. stuck low condition. In normal operation, FAULT is high.
SCLOUT (Pin 2):
Serial Clock Output. Connect this pin to Connect a 10k resistor from this pin to VCC to provide the SCL bus on the card. the pull-up.
SCLIN (Pin 3):
Serial Clock Input. Connect this pin to SCL
SDAIN (Pin 8):
Serial Data Input. Connect this pin to the on the bus backplane. SDA bus on the backplane.
ACC (Pin 4):
Rise-Time Accelerator Control. Connect ACC
SDAOUT (Pin 9):
Serial Data Output. Connect this pin to to VCC to disable all four accelerators. Connect ACC to the SDA bus on the card. GND to enable all four accelerators. Float ACC to enable
V
the SDAOUT and SCLOUT accelerators only. For applica-
CC (Pin 10):
Supply Voltage Input. Place a bypass capaci- tor of at least 0.01µF close to V tions when V CC for best results. CC is greater than the bus pull-up voltage, connect ACC to V
Exposed Pad (Pin 11, DFN Only):
Exposed pad may be CC. left open or connected to the ground plane.
GND (Pin 5):
Device Ground. Connect this pin to a ground plane for best results. 4304fa 5