Overview
The PCA9601DP,118 is a dual bidirectional bus buffer designed by NXP USA Inc. to isolate I²C-bus capacitance, enabling the operation of long I²C buses in both point-to-point and multipoint applications. This component is particularly useful for scenarios requiring high-speed data transfer and compatibility with various bus configurations.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2.5 | 15 | V | |
| Maximum Operating Bus Voltage | 15 | V | ||
| Typical Operating Supply Current | 5 | mA | ||
| LOW-level Input Voltage on I²C-bus (SX/SY side) | 0.5 | V (over -40 °C to +85 °C) | ||
| LOW-level Output Voltage on I²C-bus (SX/SY side; 3 mA sink) | 0.74 | V (max. over -40 °C to +85 °C) | ||
| Operating Temperature Range | -40 | 85 | °C | |
| Maximum Operating Frequency | 1 | MHz | ||
| Package Type | SO8, TSSOP8 (MSOP8) |
Key Features
- Bidirectional data transfer of I²C-bus signals, allowing for non-latching, bidirectional logic interface between a normal I²C-bus and higher capacitance or different voltage bus configurations.
- Temperature-stabilized logic voltage levels at the SX/SY interface, making it suitable for interfacing with buses that have non-I²C-bus-compliant logic levels such as SMBus, PMBus, or TTL logic levels.
- High drive capability of up to 15 mA over 0 °C to 85 °C, enabling the driving of a 5 V Fast-mode Plus (Fm+) bus with 470 pF loading.
- Separation of the bidirectional I²C-bus signals into unidirectional TX and RX signals, allowing for transmission via balanced transmission lines (twisted pairs) or with galvanic isolation using opto or magnetic coupling.
- Compatibility with Fast-mode Plus specifications and operation at speeds up to at least 1 MHz.
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 (350 μA) standard or Fm+ standard.
- Simple conversion of I²C-bus SDA or SCL signals to multi-drop differential bus hardware.
- Interfaces with opto-couplers to provide opto-isolation between I²C-bus nodes up to 1 MHz.
- Long distance point-to-point or multipoint architectures.
Q & A
- What is the primary function of the PCA9601DP,118?
The PCA9601DP,118 is designed to isolate I²C-bus capacitance, allowing long buses to be driven in point-to-point or multipoint applications.
- What is the operating voltage range of the PCA9601DP,118?
The supply voltage range is from 2.5 V to 15 V.
- What is the maximum operating frequency of the PCA9601DP,118?
The PCA9601DP,118 can operate at speeds up to at least 1 MHz.
- What types of packages are available for the PCA9601DP,118?
The component is available in SO8 and TSSOP8 (MSOP8) packages.
- Can the PCA9601DP,118 handle different logic levels?
- How does the PCA9601DP,118 handle high capacitance buses?
- Is the PCA9601DP,118 compatible with Fast-mode Plus specifications?
- Can the PCA9601DP,118 be used for opto-isolation?
- What are the typical operating supply current and LOW-level input voltage of the PCA9601DP,118?
The typical operating supply current is 5 mA, and the LOW-level input voltage on the I²C-bus (SX/SY side) is 0.5 V over -40 °C to +85 °C.
- What is the operating temperature range of the PCA9601DP,118?
The operating temperature range is from -40 °C to +85 °C.
