PCA9515B Texas instruments

PCA9515B

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PCA9515B

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Описание

The PCA9515B is a BiCMOS dual bidirectional buffer integrated circuit intended for I2C bus and SMBus applications. The device contains two identical bidirectional open-drain buffer circuits that enables I2C and similar bus systems to be extended (or add slaves) without degrading system performance. The dual bidirectional I2C buffer is operational at 2.3 V to 3.6 V VCC. The PCA9515B 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. The device allows two buses, of 400-pF bus capacitance, to be connected in an I2C application.

Two-Channel Bidirectional Buffers
I²C Bus and SMBus Compatible
Support for I²C Standard Mode (100-kHz) and
Fast Mode (400-kHz)
Active-High Repeater-Enable Input
Open-Drain I²C Input and Output
5.5-V Tolerant I²C Input and Output and
Enable Input Support Mixed-Mode Signal Operation
Lockup-Free Operation
Accommodates Standard Mode, Fast Mode I²C
Devices, and Multiple Masters
Supports Arbitration and Clock Stretching Across
Repeater
Powered-Off High-Impedance I²C Pins
Latch-Up Performance Exceeds 100-mA Per
JESD 78, Class I
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 1000-V Charged-Device Model (C101)

Features	Buffer, Enable pin
Frequency (max) (MHz)	0.4
VCCA (min) (V)	2.3
VCCA (max) (V)	3.6
VCCB (min) (V)	2.3
VCCB (max) (V)	3.6
Supply restrictions	VCC Single Supply
Rating	Catalog
Operating temperature range (°C)	-40 to 85