Overview
The PCA9601DPZ, produced by NXP USA Inc., is a dual bidirectional bus buffer designed to isolate I²C-bus capacitance. This component allows for the extension of I²C-bus signals in point-to-point or multipoint applications, supporting bus capacitances up to 4000 pF. It is a higher-speed version of the P82B96 and a higher drive version of the PCA9600, enabling the use of many more Fast-mode Plus (Fm+) slaves on remote daughter cards. The PCA9601DPZ operates within a temperature range of 0 °C to 85 °C and can handle speeds up to at least 1 MHz, making it suitable for various high-capacitance or different voltage bus configurations.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | 2.5 V | 15 V | V | ||
| Maximum Operating Bus Voltage | Independent of VCC | 15 V | V | ||
| Typical Operating Supply Current | 5 mA | mA | |||
| LOW-level Input Voltage on I²C-bus (SX/SY side) | -40 °C to +85 °C | 0.5 V | V | ||
| LOW-level Output Voltage on I²C-bus (SX/SY side; 3 mA sink) | -40 °C to +85 °C | 0.74 V | V | ||
| Drive Capability at SX/SY | 0 °C to 85 °C | 15 mA | mA | ||
| Operating Temperature Range | -40 °C | 85 °C | °C | ||
| Package Type | TSSOP8 (MSOP8) |
Key Features
- Bidirectional data transfer of I²C-bus signals.
- Isolates capacitance, allowing up to 4000 pF on the TX/TY side and over 400 pF on the SX/SY side.
- Operates at speeds up to at least 1 MHz.
- Supports supply voltage range of 2.5 V to 15 V with I²C-bus logic levels on SX/SY side independent of supply voltage.
- Splits I²C-bus signals into pairs of forward/reverse TX/RX, TY/RY signals for interface with opto-electrical isolators and similar devices.
- Low power supply current.
- ESD protection exceeds 3500 V HBM per JESD22-A114 and 1400 V CDM per JESD22-C101.
- Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA.
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 PCA9601DPZ?
The PCA9601DPZ is designed to isolate I²C-bus capacitance, allowing long buses to be driven in point-to-point or multipoint applications. - What is the maximum bus capacitance supported by the PCA9601DPZ?
The PCA9601DPZ supports bus capacitances up to 4000 pF. - What is the operating temperature range of the PCA9601DPZ?
The operating temperature range is from 0 °C to 85 °C. - What is the maximum operating speed of the PCA9601DPZ?
The PCA9601DPZ can operate at speeds up to at least 1 MHz. - What types of packages are available for the PCA9601DPZ?
The PCA9601DPZ is available in TSSOP8 (MSOP8) packages. - Does the PCA9601DPZ support different logic levels?
Yes, it supports I²C-bus logic levels on the SX/SY side independent of the supply voltage, and it can interface with buses that have non-I²C-bus-compliant logic levels such as SMBus, PMBus, or TTL logic levels. - How does the PCA9601DPZ handle ESD protection?
The PCA9601DPZ has ESD protection that exceeds 3500 V HBM per JESD22-A114 and 1400 V CDM per JESD22-C101. - Can the PCA9601DPZ be used for opto-isolation?
Yes, it can interface with opto-couplers to provide opto-isolation between I²C-bus nodes up to 1 MHz. - What is the drive capability of the PCA9601DPZ at SX/SY?
The PCA9601DPZ has a drive capability of 15 mA at SX/SY over the temperature range of 0 °C to 85 °C. - Is the PCA9601DPZ compatible with Fast-mode Plus specifications?
Yes, the high drive side of the PCA9601DPZ is compatible with Fast-mode Plus specifications.
