Level Translating Fast-Mode Plus I2C Bus/SMBus Repeater
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The PI6ULS5V9617A is a CMOS integrated circuit intended for Fast-mode Plus (Fm+) I2C-bus or SMBus applications. It can provide level shifting between low voltage (down to 0.6V) and higher voltage (2.2V to 5.5V) in mixed-mode applications.
The PI6ULS5V9617A enables the system designer to isolate two halves of a bus for both voltage and capacitance, accommodating more I2C devices or longer trace length. It also permits extension of the I2C-bus by providing bidirectional buffering for both the data (SDA) and the clock (SCL) lines, thus enabling two buses of 540 pF at 1 MHz or up to 4000 pF at lower speeds. The SDA and SCL pins are over voltage tolerant and are high-impedance when the PI6ULS5V9617A is unpowered.
The 2.2V to 5.5V bus port B drivers have the static level offset, while the adjustable voltage bus port A drivers eliminate the static offset voltage. This results in a LOW on the port B translating into a nearly 0V LOW on the port A which accommodates the smaller voltage swings of lower voltage logic. The EN pin is referenced to VCC(B) and can also be used to turn the drivers on and off under system control.
Compliance (Only Automotive supports PPAP) | Standard |
---|---|
Translation From (V) | 0.6 to 5.5 |
Translation To (V) | 2.2 to 5.5 |
Max Signal Rate | 1MHz |
Bits Needed | 2 |
Auto Direction Sensing? | Yes |
Shift | Bi-Directional |
Ambient or Junction Temperature (°C) | -40 to 85 |
Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents
A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.
PCN # | Issue Date | Implementation Date | Subject |
---|---|---|---|
PCN-2510 | 2021-02-26 | 2021-05-26 | Qualified Additional A/T Sites, Fab Site and Data Sheet Change |
PCN-2505 | 2021-01-26 | 2021-07-26 | Device End of Life (EOL) |
PCN-2493 | 2020-12-28 | 2021-03-28 | Qualified Additional A/T Sites and Bill of Materials (BOM) |