Overview
The PCA9601D,118 is a dual bidirectional bus buffer produced by NXP USA Inc. This component is designed to isolate I²C-bus capacitance, enabling the operation of long buses in point-to-point or multipoint applications up to 4000 pF. It is a higher-speed version of the P82B96 and a higher drive version of the PCA9600, making it suitable for applications requiring Fast-mode Plus (Fm+) compatibility. The PCA9601D,118 operates within a temperature range of 0 °C to 85 °C and can handle bus speeds up to at least 1 MHz.
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 |
| LOW-level Output Voltage on I²C-bus (SX/SY side; 3 mA sink) | - | - | 0.74 | V |
| Drive Capability at SX/SY | - | - | 15 | mA |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Types | - | - | SO8, TSSOP8 (MSOP8) | - |
Key Features
- Bidirectional data transfer of I²C-bus signals, allowing for non-latching, logic interface between normal I²C-bus and higher capacitance or different voltage bus configurations.
- Operates at speeds up to at least 1 MHz and is compatible with Fast-mode Plus specifications.
- Temperature-stabilized logic voltage levels at SX/SY interface, suitable for interfacing with buses that have non I²C-bus-compliant logic levels such as SMBus, PMBus, or TTL logic levels.
- 15 mA drive capability over 0 °C to 85 °C at SX/SY, enabling the driving of a 5 V Fm+ bus with 470 pF loading.
- Separation of bidirectional I²C-bus signals into unidirectional TX and RX signals, allowing transmission via balanced transmission lines or with galvanic isolation using opto or magnetic coupling.
- Low power supply current and ESD protection exceeding 3500 V HBM and 1400 V CDM.
- Latch-up testing exceeds 100 mA according to JEDEC Standard JESD78.
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 PCA9601D,118?
The PCA9601D,118 is designed to isolate I²C-bus capacitance, allowing long buses to be driven in point-to-point or multipoint applications.
- What are the supported package types for the PCA9601D,118?
The PCA9601D,118 is available in SO8 and TSSOP8 (MSOP8) packages.
- What is the operating temperature range of the PCA9601D,118?
The PCA9601D,118 operates within a temperature range of 0 °C to 85 °C.
- What is the maximum bus speed supported by the PCA9601D,118?
The PCA9601D,118 can operate at speeds up to at least 1 MHz.
- Is the PCA9601D,118 compatible with Fast-mode Plus specifications?
Yes, the PCA9601D,118 is compatible with Fast-mode Plus specifications.
- What is the drive capability of the PCA9601D,118 at SX/SY?
The PCA9601D,118 has a 15 mA drive capability at SX/SY over 0 °C to 85 °C.
- Can the PCA9601D,118 be used for opto-isolation between I²C-bus nodes?
Yes, the PCA9601D,118 can be used with opto-couplers to provide opto-isolation between I²C-bus nodes up to 1 MHz.
- What are some common applications of the PCA9601D,118?
Common applications include interfaces between I²C-buses at different logic levels, interfaces with SMBus or Fm+ standards, and long distance point-to-point or multipoint architectures.
- Does the PCA9601D,118 support balanced transmission lines or galvanic isolation?
Yes, the PCA9601D,118 supports transmission via balanced transmission lines (twisted pairs) or with galvanic isolation using opto or magnetic coupling.
- What is the ESD protection level of the PCA9601D,118?
The PCA9601D,118 has ESD protection exceeding 3500 V HBM and 1400 V CDM.
