TPT29548A(3PEAK思瑞浦)
- The TPT29548A is a 1:8 bidirectional translating I2Cswitch. The SCL/SDA upstream pair fans out to eightdownstream channels. Any single SCn/SDn channelor combination of channels can be selected,determined by the programmable control register
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The TPT29548A is a 1:8 bidirectional translating I2Cswitch. The SCL/SDA upstream pair fans out to eightdownstream channels. Any single SCn/SDn channelor combination of channels can be selected,determined by the programmable control register.If one of the downstream I2C buses is stuck in a lowstate, then an active-low reset input helpsthe TPT29548A to recover. Pulling low resetsthe I2C state machine and causes all the channels tobe deselected, as does the internal power-on resetfunction.The pass gates of the switches are constructed suchthat the VCC terminal can be used to limit themaximum high voltage, which will be passed by theTPT29548A. This allows the use of different busvoltages on each pair, so that 2.5 V, or 3.3 V partscan communicate with 5 V parts, without anyadditional protection. External pull-up resistors pullthe bus up to the desired voltage level for eachchannel. All I/O terminals are 5.5 V tolerant.TPT29548A is available in TSSOP24 and QFN24Lpackage, and is characterized from −40°C to +85°C.
Features
Bidirectional Translator of 1:8 I2C Switch
Active-Low Reset Input
Three address terminals, allowing up to 8 deviceson the I2C Bus
Operating Power-Supply Voltage Range of 2.3 Vto 5.5 V
Allows Voltage-Level Translation Between 2.5 V,3.3 V, and 5 V Buses
Support Standard Mode and Fast Mode I2CDevices，0 to 400-kHz Clock Frequency
Low RON Switches
Latch-Up performance exceeds 200 mA per JESD78
ESD Protection Exceeds JESD 22
− 3.5 kV Human-Body Model
− 1.5 kV Charged-Device Model
Applications
Servers/Storages
Routers (Telecom Switching Equipment)
Factory Automation
Products With I2C Slave Address Conflicts (e.g.,Multiple, Identical Temp Sensors)
Features
Bidirectional Translator of 1:8 I2C Switch
Active-Low Reset Input
Three address terminals, allowing up to 8 deviceson the I2C Bus
Operating Power-Supply Voltage Range of 2.3 Vto 5.5 V
Allows Voltage-Level Translation Between 2.5 V,3.3 V, and 5 V Buses
Support Standard Mode and Fast Mode I2CDevices，0 to 400-kHz Clock Frequency
Low RON Switches
Latch-Up performance exceeds 200 mA per JESD78
ESD Protection Exceeds JESD 22
− 3.5 kV Human-Body Model
− 1.5 kV Charged-Device Model
Applications
Servers/Storages
Routers (Telecom Switching Equipment)
Factory Automation
Products With I2C Slave Address Conflicts (e.g.,Multiple, Identical Temp Sensors)
