Overview
The PCA9507D,112, produced by NXP USA Inc., is a 2-wire serial bus extender designed to enhance the reliability and range of I2C-bus, SMBus, and DDC-bus applications. This component provides level shifting between 3.3 V and 5 V, allowing for bus extensions of up to 18 meters. It is particularly useful in HDMI DDC applications, ensuring signal integrity over long distances.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | NXP USA Inc. |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Operating Temperature | -40°C ~ 85°C |
| Voltage - Supply | 2.7 V ~ 5.5 V |
| Number of Channels | 1 |
| Input/Output | 2-Wire Bus |
| Data Rate (Max) | 400 kHz |
| Capacitance - Input | 6 pF |
| Current - Supply | 1 mA |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
Key Features
- I2C-bus, SMBus, and DDC-bus compatible
- Active HIGH buffer enable input
- Open-drain input/outputs
- Lock-up free operation
- Supports arbitration and clock stretching across the repeater
- Accommodates Standard-mode and Fast-mode I2C-bus devices and multiple masters
- Powered-off high-impedance I2C-bus pins
- Rise time accelerators on port A to enhance signal integrity
- Enable pin to control the drivers under system control
Applications
The PCA9507D,112 is primarily used in HDMI DDC applications, such as in DVD players, LCD TVs, and other devices requiring reliable and long-distance I2C-bus or SMBus communication. It is also suitable for any system that needs to extend the I2C-bus or SMBus over long cables while maintaining signal integrity.
Q & A
- What is the primary function of the PCA9507D,112?
The PCA9507D,112 is a 2-wire serial bus extender that provides level shifting and buffering for I2C-bus, SMBus, and DDC-bus applications.
- What is the maximum bus extension distance supported by the PCA9507D,112?
The PCA9507D,112 supports bus extensions of up to 18 meters.
- What are the operating supply voltage ranges for the PCA9507D,112?
The operating supply voltage ranges are 2.7 V to 5.5 V for both Port A and Port B.
- What is the maximum data rate supported by the PCA9507D,112?
The maximum data rate is 400 kHz.
- Is the PCA9507D,112 RoHS compliant?
Yes, the PCA9507D,112 is ROHS3 compliant.
- What type of packaging is available for the PCA9507D,112?
The PCA9507D,112 is available in an 8-SOIC package with Tape & Reel (TR) packaging.
- Can multiple PCA9507D,112 devices be connected in series?
Yes, multiple PCA9507D,112 devices can be connected in series without build-up in offset voltage, but only time of flight delays need to be considered.
- What is the purpose of the rise time accelerators on the PCA9507D,112?
The rise time accelerators on Port A help to quickly slew the SDA and SCL lines HIGH during positive bus transitions, enhancing signal integrity.
- How should the enable pin be used on the PCA9507D,112?
The enable pin should be used to turn the drivers on and off under system control, but only when the bus is idle to prevent system failures.
- What is the current supply requirement for the PCA9507D,112?
The current supply requirement is 1 mA.
- Is the PCA9507D,112 still in production?
No, the PCA9507D,112 is marked as obsolete and is no longer manufactured.
