Texas Instruments PCA9517
The PCA9517 is a BiCMOS integrated circuit intended for I2C bus and SMBus systems. It can also provide bidirectional voltage-level translation (uptranslation/down-translation) between low voltages (down to 0.9 V) and higher voltages (2.7 V to 5.5 V) in mixed-mode applications. This device enables I2C and similar bus systems to be extended, without degradation of performance even during level shifting.| Part No. | PCA9517 |
|---|---|
| Datasheet | PCA9517 Download |
| Manufacturer |  Texas Instruments |
| Description | Level-Translating I2C Bus Repeater |
| Buy | Stock & Price |
FEATURES
●1 Two-Channel Bidirectional Buffer● I2C Bus and SMBus Compatible
● Operating Supply Voltage Range of 0.9 V to 5.5 V on A Side
● Operating Supply Voltage Range of 2.7 V to 5.5 V on B Side
● Voltage-Level Translation From 0.9 V to 5.5 V and 2.7 V to 5.5 V
● Footprint and Function Replacement for PCA9515A
● Active-High Repeater-Enable Input
● Open-Drain I2C I/O
● 5.5-V Tolerant I2C 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
● 400-kHz Fast I2C Bus
● 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 2.7 V to 5.5 V. The PCA9517 buffers both the serial data (SDA) and the serial clock (SCL) signals on the I2C bus, thus allowing two buses of 400-pF bus capacitance to be connected in an I2C application.
