Overview
The P82B96TD,112 is a dual bidirectional bus buffer IC produced by NXP USA Inc. It is part of the P82B96 series and is designed to create a non-latching, bidirectional logic interface between the standard I²C-bus and various other bus configurations. This IC is particularly useful for interfacing I²C-bus logic signals to buses with different voltage and current levels, such as the 350 µA SMBus or 3.3 V logic devices, and can handle up to 15 V levels and low-impedance lines to enhance noise immunity on longer bus lengths.
Key Specifications
| Attribute | Value |
|---|---|
| Interface Type | I²C |
| No of Channels | 2 |
| Clock Frequency - Max | 400 kHz |
| Supply Voltage - Nom | 2 V to 15 V |
| Supply Current | 0.9 mA |
| Package Style | SOIC-8 |
| Mounting Method | Surface Mount |
| Operating Temperature | -40 °C to +85 °C |
| ESD Protection | Exceeds 3500 V HBM per JESD22-A114, 250 V DIP package, 400 V SO package MM per JESD22-A115, and 1000 V CDM per JESD22-C101 |
Key Features
- Bidirectional data transfer of I²C-bus signals
- Isolates capacitance allowing 400 pF on Sx/Sy side and 4000 pF on Tx/Ty side
- Tx/Ty outputs have 60 mA sink capability for driving low-impedance or high capacitive buses
- 400 kHz operation over at least 20 meters of wire
- Supply voltage range of 2 V to 15 V with I²C-bus logic levels on Sx/Sy side independent of supply voltage
- Splits I²C-bus signal into pairs of forward/reverse Tx/Rx, Ty/Ry signals for interface with opto-electrical isolators and similar devices
- Low power supply current
- Latch-up free (bipolar process with no latching structures)
- Available in DIP8, SO8, and TSSOP8 packages
Applications
- Interface between I²C-buses operating at different logic levels
- Interface between I²C-bus and SMBus (350 µA) 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 400 kHz
Q & A
- What is the primary function of the P82B96TD,112 IC?
The primary function of the P82B96TD,112 IC is to create a non-latching, bidirectional logic interface between the standard I²C-bus and various other bus configurations.
- What is the maximum clock frequency supported by the P82B96TD,112?
The maximum clock frequency supported is 400 kHz.
- What is the supply voltage range for the P82B96TD,112?
The supply voltage range is from 2 V to 15 V.
- What is the typical supply current of the P82B96TD,112?
The typical supply current is 0.9 mA.
- In what package styles is the P82B96TD,112 available?
The P82B96TD,112 is available in DIP8, SO8, and TSSOP8 packages.
- What is the operating temperature range of the P82B96TD,112?
The operating temperature range is from -40 °C to +85 °C.
- Does the P82B96TD,112 provide ESD protection?
Yes, it exceeds 3500 V HBM per JESD22-A114, 250 V DIP package, 400 V SO package MM per JESD22-A115, and 1000 V CDM per JESD22-C101.
- Can the P82B96TD,112 be used for opto-isolation between I²C-bus nodes?
Yes, it can be used to interface with opto-couplers to provide opto-isolation between I²C-bus nodes up to 400 kHz.
- What is the maximum output sink capability of the Tx/Ty outputs?
The Tx/Ty outputs have a 60 mA sink capability for driving low-impedance or high capacitive buses.
- Is the P82B96TD,112 latch-up free?
Yes, it is latch-up free due to its bipolar process with no latching structures.
