Texas Instruments PCA9515A
The PCA9515A is a BiCMOS integrated circuit intended for I2C bus and SMBus systems applications. The device contains two identical bidirectional open-drain buffer circuits that enable I2C and similar bus systems to be extended without degradation of system performance. The PCA9515A buffers both the serial data (SDA) and serial clock (SCL) signals on the I2C bus, while retaining all the operating modes and features of the I2C system.| Part No. | PCA9515A |
|---|---|
| Datasheet | PCA9515A Download |
| Manufacturer |  Texas Instruments |
| Description | Dual Bidirectional I2C Bus and SMBus Repeater |
| Buy | Stock & Price |
FEATURES
●1 Two-Channel Bidirectional Buffers● I2C Bus and SMBus Compatible
● Active-High Repeater-Enable Input
● Open-Drain I2C I/O
● 5.5-V Tolerant I2C I/O and Enable Input Support Mixed-Mode Signal Operation
● Lockup-Free Operation
● Accommodates Standard Mode and Fast Mode I2C Devices and Multiple Masters
● Powered-Off High-Impedance I2C Pins
● Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
● ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) 2
DESCRIPTION
This dual bidirectional I2C buffer is operational at 2.3V to 3.6-V VCC. This enables two buses of 400-pF bus capacitance to be connected in an I2C application. The I2C bus capacitance limit of 400 pF restricts the number of devices and bus length. Using the PCA9515A enables the system designer to isolate two halves of a bus, accommodating more I2C devices or longer trace lengths. The PCA9515A has an active-high enable (EN) input with an internal pullup, which allows the user to select when the repeater is active.
