PCA9517DGKR Programmable Logic ICS Voltage Levels Level-Translating I2C Bus Repeater
logic integrated circuits
,programmable logic array ic
PCA9517DGKR Programmable Logic ICS Voltage Levels Level-Translating I2C Bus Repeater
1 Features
- 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
2
-
Open-Drain I C 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
2 Description
This dual bidirectional I2C buffer is operational at 2.7 V to 5.5 V.
The PCA9517 is a BiCMOS integrated circuit intended for I2C bus and SMBus systems. It can also provide bidirectional voltage-level translation (up- translation/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.
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. This device can also be used to isolate two halves of a bus for voltage and capacitance.
The PCA9517 has two types of drivers—A-side drivers and B-side drivers. All inputs and I/Os are overvoltage tolerant to 5.5 V, even when the device is unpowered (VCCB and/or VCCA = 0 V).
The PCA9517 doesnot support clock stretching and arbitration across the repeater.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
PCA9517 |
SOIC (8) |
4.90 mm × 3.91 mm |
|
VSSOP (8) |
3.00 mm × 3.00 mm |
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