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TPT29306

Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator

Overview

The TPT29306 device is a dual bidirectional I2C and SMBus voltage-level translator with an enable (EN) input, and work from 1.2V to 3.6V VREF1 and 1.8V to 5.5V VREF2 .

The 3.5Ω Ron make the minimal propagation delay <1.5ns. If EN is high, the translator switch is ON, and the SCL1 and SDA1 I/O are connected to the SCL2 and SDA2 I/O, will allow bidirectional data flow between ports. If EN is low, the translator switch is off, and a high-impedance state exists between ports to isolate both sides.

The TPT29306 can also be used to run two buses, one is 400 kHz and the other is 100 kHz. If the two buses are operating at different frequency, the 100 kHz bus must be isolated when the other 400 kHz bus is required. If the master is running at 400 kHz, the maximum system frequency may be less than 400 kHz because of the delays added by the translator.

As with the standard I2C-bus system, pull-up resistors are required in both sides, to provide the logic HIGH levels on the translator’s bus. The device is designed to work with SM, FM and FM+ I2C-bus devices in addition to SMBus devices. The maximum frequency is dependent on the RC time constant, but generally supports > 2MHz.

TPT29306 is available in MSOP8, VSSOP8, DFN1.4X1-8L and DFN3X4-8L(none e-pad) package, and is characterized from –40°C to +85°C.


  • Status

    Production

  • Rating

    Industrial

  • Drivers Per Package

    1

  • Receivers Per Package

    1

  • VCC (Min) (V)

    1.2

  • VCC (Max) (V)

    5.5

  • Data Rate (Max) (kBPS)

    1000

  • ICC (Max) (mA)

    1

  • ESD HBM (kV)

    4

  • IEC-61000-4-2 Contact (kV)

    /

  • Operating Temperature Range (℃)

    -40 to +85

  • Package

    MSOP8, DFN1.4X1-8, DFN3X4-8

Development Resources

Application

    • I2C , SMBus, PMBus, MDIO, UART, Low Speed SDIO, GPIO, and Other Two Signal Interfaces

    • Servers/Storages

    • Routers (Telecom Switching Equipment)

    • Personal Computers/Consumer handsets

    • Industrial Automation


Ordering Detail

Order Part Number Buy Rating Feature Status 1ku Price Release Date Package Lead time (week) MSL Packing MPQ CPQ
TPT29306L1-DFER Industrial Grade / Production $0.350 2019-12-30 DFN3X4-8 19 MSL1 T&R 3000 15000
TPT29306L1-DFGR Industrial Grade / Released $0.337 2019-10-30 DFN1.4X1-8 10 MSL1 T&R 4000 160000
TPT29306L1-VS3R Industrial Grade / Released $0.386 2022-05-20 VSSOP8 13 MSL1 T&R 3000 54000
TPT29306-VS1R Industrial Grade / Released $0.311 2019-10-30 MSOP8 10 MSL3 T&R 3000 15000
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