I<sup>2</sup>C Bus Buffer with Rise Time Accelerators and Hot Swap Capability

Product Status: Mass Production


The ISL33001, ISL33002, ISL33003 are 2-Channel Bus Buffers that provide the buffering necessary to extend the bus capacitance beyond the 400pF maximum specified by the I2 C specification. In addition, the ISL33001, ISL33002, ISL33003 feature rise time accelerator circuitry to reduce power consumption from passive bus pull-up resistors and improve data-rate performance. All devices also include hot swap circuitry to prevent corruption of the data and clock lines when I2 C devices are plugged into a live backplane, and the ISL33002 and ISL33003 add level translation for mixed supply voltage applications. The ISL33001, ISL33002, ISL33003 operate at supply voltages from +2.3V to +5.5V at a temperature range of -40°C to +85°C.


  • 2 Channel I2C compatible bi-directional buffer
  • +2.3VDC to +5.5VDC supply range
  • >400kHz operation
  • Bus capacitance buffering
  • Rise time accelerators
  • Hot swapping capability
  • ±6kV Class 3 HBM ESD protection on all pins
  • ±12kV HBM ESD protection on SDA/SCL pins
  • Enable pin (ISL33001 and ISL33003)
  • Logic level translation (ISL33002 and ISL33003)
  • READY logic pin (ISL33001)
  • Accelerator disable pin (ISL33002)
  • Pb-free (RoHS Compliant) 8 Ld SOIC (ISL33001 only), 8 Ld TDFN (3mmx3mm) and 8 Ld MSOP packages
  • Low quiescent current: 2.1mA typ
  • Low shutdown current: 0.5µA typ


Basic Information
Production Status
Mass Production
Supply Voltage Vcc Range (V)
2.3 to 5.5
Accelerator Current
10 mA
Accelerator Trigger
45 mV
Supply Current Icc
2.2 mA
Hot Swap
Qualification Level
Can Sample
Temperature Range
-40 to +85

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