P82B96TD,112 Datasheet Summary

Product Overview

• Family: Dual Bidirectional Bus Buffer
• Model: P82B96
• Package: SO8
• Orderable Part Number: P82B96TD,118

Key Features

• Bidirectional Data Transfer: Supports I2C-bus signals.
• Isolation of Capacitance: Allows 400 pF on Sx/Sy side and 4000 pF on Tx/Ty side.
• Sink Capability: Tx/Ty outputs have 60 mA sink capability for driving low-impedance or high capacitive buses.
• High-Speed Operation: Supports 400 kHz operation over at least 20 meters of wire.
• Wide Supply Voltage Range: 2 V to 15 V with I2C-bus logic levels on Sx/Sy side independent of supply voltage.
• Low Power Supply Current: Ensures energy efficiency.
• ESD Protection: Exceeds 3500 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101.
• Latch-up Free: Bipolar process with no latching structures.
• Packages Offered: SO8 and TSSOP8.

Applications

• Interface Between I2C-Buses: Operating at different logic levels (e.g., 5 V and 3 V or 15 V).
• Interface Between I2C-Bus and SMBus: Standard 350 µA SMBus.
• Conversion of I2C-Bus Signals: To multi-drop differential bus hardware.
• Opto-Isolation: Between I2C-bus nodes up to 400 kHz.

Ordering Information

• Package Type: SO8
• Topside Marking: P82B96T
• Orderable Part Number: P82B96TD,118
• Packing Method: REEL 13" Q1/T1 NDP
• Minimum Order Quantity: 2500
• Temperature Range: Tamb = -40 °C to +85 °C

Pin Configuration

• Sx: I2C-bus (SDA or SCL)
• Rx: Receive signal
• Tx: Transmit signal
• GND: Negative supply
• Ty: Transmit signal
• Ry: Receive signal
• Sy: I2C-bus (SDA or SCL)
• VCC: Positive supply voltage

Limiting Values

• Supply Voltage (VCC): -0.3 V to +18 V
• Voltage on Pin Sx (VSx): -0.3 V to +18 V
• Voltage on Pin Tx (VTx): -0.3 V to +18 V
• Voltage on Pin Rx (VRx): -0.3 V to +18 V
• In Current on Any Pin: 250 mA
• Total Power Dissipation (Ptot): 300 mW
• Junction Temperature Operating Range: -40 °C to +125 °C (P82B96TD/S900)
• Storage Temperature (Tstg): -55 °C to +125 °C
• Ambient Temperature Operating (Tamb): -40 °C to +85 °C

Characteristics

• Supply Voltage Operating (VCC): 2.0 V to 15 V
• Bus HIGH Voltage (VSx, VSy): 0.9 V to 1.8 V
• Supply Current (ICC): 1.1 mA to 2.5 mA
• Additional Quiescent Supply Current per Tx or Ty LOW: 1.7 mA to 3.5 mA
• Maximum Input/Output Voltage (VSx, VSy): 15 V
• Static Output Loading on I2C-bus (ISx, ISy): 0.2 mA to 3 mA
• Dynamic Output Sink Capability on I2C-bus (ISx, ISy): 7 mA to 18 mA
• Leakage Current on I2C-bus (ISx, ISy): 1 µA to 10 µA
• Maximum Output Voltage Level (VTx, VTy): 15 V
• Static Output Loading on Buffered Bus (ITx, ITy): 30 mA
• Dynamic Output Sink Capability, Buffered Bus (ITx, ITy): 60 mA to 100 mA
• Leakage Current on Buffered Bus (ITx, ITy): 1 µA to 10 µA
• Input Current from I2C-bus (ISx, ISy): -1 µA to -10 µA
• Input Current from Buffered Bus (IRx, IRy): -1 µA to -10 µA
• Leakage Current on Buffered Bus Input (IRx, IRy): 1 µA to 10 µA
• Output Logic LOW Level (VSx, VSy): 0.8 V to 0.88 V (at 0.2 mA), 670 mV to 790 mV (at 3 mA)
• Input Logic Switching Threshold Voltages (VSx, VSy): 600 mV to 700 mV
• Input Logic HIGH Level Fraction of Applied VCC (VRx, VRy): 0.58VCC
• Input Threshold Fraction of Applied VCC (VRx, VRy): 0.5VCC
• Input Logic LOW Level Fraction of Applied VCC (VRx, VRy): 0.42VCC
• Logic Level Threshold Difference (VSx, VSy): 50 mV to 85 mV
• Thermal Resistance (Rth(j-pcb)): 127 K/W

Functional Description

The P82B96 provides a non-latching, bidirectional, logic interface between the normal I2C-bus and a range of other bus configurations. It interfaces I2C-bus logic signals to similar buses having different voltage and current levels 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.

Application Information

• Interfacing Different Logic Levels: The P82B96 can interface an I2C-bus type of bus with different logic levels.
• Galvanic Isolation: Interfaces with opto-couplers to provide opto-isolation between I2C-bus nodes up to 400 kHz.
• Long Distance Communications: Supports long distance I2C-bus communications using buffered bus signals.
• Extending a DDC Bus: Can extend a DDC bus using buffered bus signals and appropriate circuitry.