TCA9517-Q1 Texas instruments

TCA9517-Q1

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TCA9517-Q1

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Описание

The TCA9517-Q1 is a bidirectional buffer with level shifting capabilities for I2C and SMBus systems. It supplies bidirectional voltage-level translation (up-translation and/or down-translation) between low voltages (down to 0.9 V) and higher voltages (2.7 V to 5.25 V) in mixed-mode applications. This device enables I2C and SMBus systems to be extended without loss of performance, even during level shifting.The TCA9517-Q1 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.The TCA9517-Q1 has two types of drivers: A-side drivers and B-side drivers. All inputs and I/Os are overvoltage tolerant to 5.25 V, even when the device is unpowered (VCCB and/or VCCA = 0 V).

AEC-Q100 Qualified for automotive applications
- Device temperature: –40°C to 125°C T_A
- Device HBM classification Level: ±5500-V
- Device CDM classification Level: ±1000-V
Functional Safety-Capable
- Documentation available to aid functional safety system design
Two-channel bidirectional buffer
I²C Bus and SMBus compatible
Operating Supply Voltage Range of 0.9-V to 5.25-V on A-side
Operating supply voltage range of 2.7-V to 5.25-V on B-side
Voltage-level translation from 0.9-V to 5.25-V and 2.7-V to 5.25-V
Active-high repeater-enable input
Open-drain I²C I/O
5.25-V tolerant I²C and enable input support mixed-mode signal operation
Accommodates standard mode and fast mode I²C devices and multiple controller
High-impedance I²C pins when powered-off
Latch-up performance exceeds 100 mA Per JESD 78, class II

Features	Buffer, Enable pin
Frequency (max) (MHz)	0.4
VCCA (min) (V)	0.9
VCCA (max) (V)	5.25
VCCB (min) (V)	2.7
VCCB (max) (V)	5.25
Supply restrictions	No rule
Rating	Automotive
TI functional safety category	Functional Safety-Capable
Operating temperature range (°C)	-40 to 125