TPT29545(3PEAK思瑞浦)
- The TPT29545 is a 1:4 bidirectional translating I2Cswitch. The SCL/SDA upstream pair fans out to fourdownstream channels. Any single SCn/SDn channelor combination of channels can be selected,determined by the programmable control register.F
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The TPT29545 is a 1:4 bidirectional translating I2Cswitch. The SCL/SDA upstream pair fans out to fourdownstream channels. Any single SCn/SDn channelor combination of channels can be selected,determined by the programmable control register.Four interrupt inputs ( INT0 INT3 ), which aredesigned as one for each of the downstream pairs.One interrupt (INT) output acts as an AND of the fourinterrupt inputs.If one of the downstream I2C buses is stuck in a lowstate, then an active-low reset (RESET) input helpsthe TPT29545 to recover. Pulling RESET 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 theTPT29545. This allows the use of different busvoltages on each pair, so that 2.5V, or 3.3V parts cancommunicate with 5V parts, without any additionalprotection. External pull-up resistors pull the bus upto the desired voltage level for each channel. All I/Oterminals are 5.5 V tolerant.TPT29545 is available in the TSSOP20 package, andis characterized from 40°C to +85°C.
Features
Bidirectional Translator of 1:4 I2C Switch
Four Active-Low Interrupt Inputs
Active-Low Interrupt Output and Active-LowReset Input
Two Address Terminals, Allowing up to FourDevices on the I2C Bus
Operating Power-Supply Voltage Range of 2.3 to5.5V
Allow Voltage-Level Translation among 2.5V,3.3V, and 5V Buses
Support Standard Mode and Fast Mode I2CDevices，0 to 400 kHz Clock Frequency
Low RON Switches
Latch-Up Performance Exceeds 200 mA perJESD 78
ESD Protection Exceeds JESD 22
− ±4000V Human-Body Model
− ±1500V 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 1:4 I2C Switch
Four Active-Low Interrupt Inputs
Active-Low Interrupt Output and Active-LowReset Input
Two Address Terminals, Allowing up to FourDevices on the I2C Bus
Operating Power-Supply Voltage Range of 2.3 to5.5V
Allow Voltage-Level Translation among 2.5V,3.3V, and 5V Buses
Support Standard Mode and Fast Mode I2CDevices，0 to 400 kHz Clock Frequency
Low RON Switches
Latch-Up Performance Exceeds 200 mA perJESD 78
ESD Protection Exceeds JESD 22
− ±4000V Human-Body Model
− ±1500V Charged-Device Model
Applications
Servers/Storages
Routers (Telecom Switching Equipment)
Factory Automation
Products with I2C Slave Address Conflicts(e.g. Multiple, Identical Temp Sensors)
