Overview
The P82B96TD/S410,118, produced by NXP USA Inc., is a dual bidirectional bus buffer designed to create a non-latching, bidirectional logic interface between the standard I2C-bus and various other bus configurations. This bipolar IC is capable of interfacing I2C-bus logic signals to buses with different voltage and current levels, such as the 350 μA SMBus, 3.3 V logic devices, and up to 15 V levels. It ensures compatibility without restricting the normal I2C-bus protocols or clock speed, making it versatile for various applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC (Supply Voltage) | Operating | 2.0 | - | 15 | V |
| VSx (Voltage on Pin Sx) | I2C-bus SDA or SCL | -0.3 | - | +18 | V |
| Tamb (Ambient Temperature) | Operating | -40 | - | +85 | °C |
| Tstg (Storage Temperature) | - | -55 | - | +125 | °C |
| ΔICC (Additional Quiescent Supply Current) | Per Tx or Ty LOW | -1.7 | - | 3.5 | mA |
| ISx, ISy (Static Output Loading on I2C-bus) | VSx, VSy = 1.0 V; V Rx, VRy = LOW | 0.2 | - | 30 | mA |
| ISx, ISy (Dynamic Output Sink Capability on I2C-bus) | VSx, VSy = 2 V; V Rx, VRy = LOW | 7 | - | 18 | mA |
| ISx, ISy (Leakage Current on I2C-bus) | VSx, VSy = 5 V; V Rx, VRy = HIGH | - | - | 10 | μA |
Key Features
- Non-latching, bidirectional logic interface between I2C-bus and other bus configurations.
- Supports various voltage levels up to 15 V and different current levels (e.g., 350 μA SMBus).
- No restrictions on normal I2C-bus protocols or clock speed.
- Minimal loading on the I2C-bus node.
- Open-collector configuration allows signals to be pulled up to the rated maximum voltage even without VCC present.
- Low input capacitance (< 7 pF) to minimize the effect on bus rise times.
Applications
- Interfacing I2C-bus logic signals to different voltage and current level buses.
- Improving noise immunity on longer bus lengths.
- Use in systems requiring compatibility between different bus configurations (e.g., SMBus, 3.3 V logic devices).
- Automotive and industrial applications where robust bus communication is necessary.
Q & A
- What is the primary function of the P82B96TD/S410,118? The primary function is to create a non-latching, bidirectional logic interface between the I2C-bus and other bus configurations.
- What are the supported voltage levels for the P82B96TD/S410,118? It supports voltage levels up to 15 V.
- Does the P82B96TD/S410,118 restrict I2C-bus protocols or clock speed? No, it does not restrict normal I2C-bus protocols or clock speed.
- What is the effect of the P82B96TD/S410,118 on the I2C-bus node? It adds minimal loading to the I2C-bus node.
- How does the open-collector configuration benefit the P82B96TD/S410,118? The open-collector configuration allows signals to be pulled up to the rated maximum voltage even without VCC present.
- What is the input capacitance of the P82B96TD/S410,118? The input capacitance is less than 7 pF for all bus voltages and supply voltages.
- Can multiple Sx or Sy I/Os be interconnected? No, the P82B96TD/S410,118 design does not support this configuration.
- What are some typical applications of the P82B96TD/S410,118? It is used in interfacing I2C-bus logic signals to different voltage and current level buses, improving noise immunity, and in automotive and industrial applications.
- What is the operating temperature range of the P82B96TD/S410,118? The operating temperature range is -40°C to +85°C.
- What is the storage temperature range of the P82B96TD/S410,118? The storage temperature range is -55°C to +125°C.
