82B715

INTEGRATED CIRCUITS 82B715 I2C bus extender Preliminary specification Supesedes data of 1997 Apr 07 IC20 Data Handbook 1998 Jan 09 Philips Semiconductors Philips Semiconductors Preliminary specification I2C bus extender 82B715 DESCRIPTION The 82B715 is a bipolar integrated circuit intended for application in I2C bus systems. While retaining all the operating modes and features of the system it permits extension of the practical separation distance between components on the I2C bus by buffering both the data (SDA) and the clock (SCL) lines. The bus capacitance limit of 400pF restricts practical communication distances to a few meters. Using one 82B715 at each end of longer cables reduces the cable loading capacitance on the I2C bus by a factor of 10 times and may allow the use of low cost general purpose wiring to extend bus lengths. I2C I2C PIN CONFIGURATIONS 8-Pin Dual In-Line or SO 82B715 N.C. 1 LX SX GND 2 3 4 8 7 6 5 VCC LY SY N.C. SU00290 PINNING FEATURES PIN 1 2 3 4 5 6 7 8 SYMBOL N.C. LX SX GND N.C. SY LY VCC FUNCTION Buffered Bus, LDA or LCL I2C Bus, SDA or SCL Negative Supply I2C Bus, SCL or SDA Buffered Bus, LCL or LDA Positive Supply Dual, bi-directional, unity voltage gain buffer I2C bus compatible Logic signal levels may include both supply and ground X10 impedance transformation Wide supply voltage range QUICK REFERENCE DATA LIMITS SYMBOL VCC ICC Iline Vin Vout Zin/Zout Tamb Supply voltage Quiescent current Output sink capability Input volt...