NXP PCA9509AGM,125

缓冲器，转接驱动器2 线式总线2 线式总线400kHz2

Overview

The PCA9509AGM,125 is a level translating I²C-bus/SMBus repeater with two voltage suppliesthat enables processor low voltage 2-wire serial bus to interface with standard I²C-bus orSMBus I/O. While retaining all the operating modes and features of the I²C-bus systemduring the level shifts, it also permits extension of the I²C-bus by providing bidirectionalbuffering for both the data (SDA) and the clock (SCL) lines, thus enabling the I²C-bus orSMBus maximum capacitance of 400 pF on the higher voltage side. Port A allows avoltage range from 0.8 V to 1.5 V and requires no external pull-up resistors due to theinternal current source. Port B allows a voltage range from 2.3 V to 5.5 V and isovervoltage tolerant. Both port A and port B SDA and SCL pins are high-impedance whenthe PCA9509AGM,125 is unpowered.

Remark: The maximum system operating frequency may be less than 400 kHzbecause of the delays added by the repeater.

Features

Tape & Reel (TR) Package
Buffer, ReDriver Type
I²C Applications
400kHz Data Rate (Max)
2 Number of Channels
2 pF Capacitance - Input
2.3V ~ 5.5V Voltage - Supply
5µA Current - Supply
Surface Mount Mounting Type