Texas Instruments TCA9517A
The TCA9517A is a bidirectional buffer with level shifting capabilities for I2C and SMBus systems. It provides 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 SMBus systems to be extended without degradation of performance, even during level shifting.| Part No. | TCA9517A |
|---|---|
| Datasheet | TCA9517A Download |
| Manufacturer |  Texas Instruments |
| Description | Level-Shifting 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 - 5.5 V to 2.7 V - 5.5 V
● Footprint and Functional Replacement for PCA9515B
● Active-High Repeater-Enable Input
● Open-Drain I2C I/O
● 5.5-V Tolerant I2C and Enable Input Support Mixed-Mode Signal Operation
● Accommodates Standard Mode and Fast Mode I2C Devices and Multiple Masters
● High-Impedance I2C Pins When Powered-Off
● Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
● ESD Protection Exceeds JESD 22 – 5500 V Human-Body Model (A114-A) – 200 V Machine Model (A115-A) – 1000 V Charged-Device Model (C101) 2
APPLICATIONS
● Servers● Routers (Telecom Switching Equipment)
● Industrial Equipment
● Products with Many I2C Slaves and/or Long PCB Traces 3
DESCRIPTION
The TCA9517A buffers both the serial data (SDA) and the serial clock (SCL) signals on the I2C bus, thus allowing two buses of up to 400-pF bus capacitance to be connected in an I2C application.
