Overview
The PCA9513AD,112 is a hot swappable I²C-bus and SMBus buffer produced by NXP USA Inc. This component is designed to facilitate the insertion and removal of I/O cards into a live backplane without corrupting the data and clock buses. It is part of the PCA9513A and PCA9514A family, which enhances the reliability and functionality of I²C and SMBus applications.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | NXP USA Inc. |
| Part Number | PCA9513AD,112 |
| Package | 8-SO (Small Outline) or TSSOP8 (Thin Shrink Small Outline Package) |
| Supply Voltage | 2.7 V to 5.5 V |
| Operating Temperature | -40°C to 85°C |
| Clock Frequency | 0 Hz to 400 kHz |
| Current Source | 92 µA on SCLIN and SDAIN (PCA9513A only) |
| ESD Protection | Exceeds 2000 V HBM, 200 V MM, and 1000 V CDM |
| Latch-up Testing | Exceeds 100 mA (JEDEC Standard JESD78) |
Key Features
- Hot Swappable: Allows I/O card insertion into a live backplane without data corruption.
- Bidirectional Buffering: Isolates backplane and card capacitances, ensuring reliable communication.
- Rise Time Accelerator: Enables the use of weaker DC pull-up currents while meeting rise time requirements.
- Current Source: Provides a 92 µA current source on SCLIN and SDAIN for consistent RC time constants.
- ENABLE and READY Pins: Digital ENABLE input and open-drain READY output for device control and status indication.
- Support for Clock Stretching and Multiple Master Arbitration: Enhances I²C and SMBus protocol compliance.
Applications
- cPCI, VME, AdvancedTCA Cards: Suitable for multipoint backplane cards that require insertion or removal from an operating system.
- Multidrop Bus Applications: Ideal for applications where cards are frequently added or removed from the backplane.
- Industrial and Embedded Systems: Used in various industrial and embedded systems requiring reliable I²C and SMBus communication.
Q & A
- What is the primary function of the PCA9513AD,112?
The primary function is to act as a hot swappable I²C-bus and SMBus buffer, allowing I/O card insertion into a live backplane without corrupting the data and clock buses.
- What is the operating voltage range of the PCA9513AD,112?
The operating voltage range is 2.7 V to 5.5 V.
- What is the maximum clock frequency supported by the PCA9513AD,112?
The maximum clock frequency is 400 kHz.
- Does the PCA9513AD,112 have built-in ESD protection?
Yes, it exceeds 2000 V HBM, 200 V MM, and 1000 V CDM.
- What is the purpose of the 92 µA current source on SCLIN and SDAIN?
The 92 µA current source provides consistent RC time constants in multidrop bus applications.
- How does the ENABLE pin function on the PCA9513AD,112?
The digital ENABLE input pin enables the device when asserted HIGH and forces it into a low current mode when asserted LOW.
- What is indicated by the READY output pin?
The READY output pin indicates whether the backplane and card sides are connected (HIGH) or not (LOW).
- Can the PCA9513AD,112 be used in series or parallel with other PCA9510A/11A/12A/13A/14A devices?
Yes, it can be connected in series or parallel with other PCA9510A/11A/12A/13A/14A devices.
- What types of applications are the PCA9513AD,112 commonly used in?
Common applications include cPCI, VME, AdvancedTCA cards, and other multipoint backplane cards.
- Does the PCA9513AD,112 support clock stretching and multiple master arbitration?
Yes, it supports clock stretching and multiple master arbitration and synchronization.
