P82B96DPZ

P82B96DPZ is a dual bidirectional bus buffer. It is a bipolar IC that creates a non-latching, bidirectional, logic interface between the normal I²C-bus and a range of other bus configurations. It can interface I²Cbus logic signals to similar buses having different voltage and current levels. It achieves this interface without any restrictions on the normal I²C-bus protocols or clock speed. The IC adds minimal loading to the I²C-bus node, and loadings of the new bus or remote I²C-bus nodes are not transmitted or transformed to the local node. The application includes an interface between I²C-buses operating at different logic levels, an interface between I²C-bus and SMBus (350µA) standard, simple conversion of I²C-bus SDA or SCL signals to multi-drop differential bus hardware, for example, via compatible PCA82C250, interfaces with opto-couplers to provide opto-isolation between I²C-bus nodes up to 400KHz.

• Bidirectional data transfer of I²C-bus signals
• Isolates capacitance allowing 400pF on Sx/Sy side and 4000pF on Tx/Ty side
• Tx/Ty outputs have 60 mA sink capability for driving low-impedance or high capacitive buses
• 400KHz operation over at least 20 meters of wire (see AN10148)
• Low power supply current, latch-up free (bipolar process with no latching structures)
• ESD protection exceeds 3500 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101
• Supply voltage range from 2.0 to 15V (Tamb = +25°C, VCC = 5V)
• Additional quiescent supply current is 1.7mA typ (Tamb = +25°C, VCC = 5V)
• Input capacitance is 7pF max (Tamb = +25°C, VCC = 5V)
• TSSOP8 package, ambient temperature range from -40°C to +85°C