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PI4ULS5V212

Level Translating Fast-Mode Plus I2C Bus/SMBus Repeater

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Description

The PI4ULS5V212 is a CMOS integrated circuit intended for Fast-mode Plus (Fm+) I2C-bus or SMBus applications. It can provide level shifting between low voltages (down to 0.6V) and higher voltages (2.2V to 5.5V) in mixed-mode applications. The PI4ULS5V212 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 overvoltage-tolerant and are high-impedance when the PI4ULS5V212 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.

Feature(s)

  • 2-channel, bidirectional buffer isolates capacitance and allows 540pF on either side of the device at 1 MHz, and up to 4000 pF at lower speeds
  • Voltage level translation from 0.6V to 5.5V and from 2.2V to 5.5V
  • Footprint and functional replacement for PI4ULS5V212 at Fast-mode speeds
  • Port A operating supply voltage range of 0.6V to 5.5V with normal levels (0.4VCC(A) + 0.8V ≤ VCC(B) )
  • Port B operating supply voltage range of 2.2V to 5.5V with static offset level
  • 5V-tolerant I2C-bus and enable pins
  • 0 Hz to 1 MHz clock frequency (the maximum system operating frequency may be less than 1MHz because of the delays added by the repeater)
  • Active HIGH repeater enable input referenced to VCC(B)
  • Open-drain input/outputs  Latching-free operation
  • Supports arbitration and clock stretching across the repeater
  • Accommodates Standard-mode, Fast-mode, and Fast-mode Plus I2C-bus devices; SMBus (standard and high power mode); PMBus; and multiple masters
  • Powered-off high-impedance I2C-bus pins
  • ESD-protection exceeds 8000V HBM per JESD22-A114 
  • Totally Lead-Free & Fully RoHS Compliant
  • Halogen- and Antimony-Free. “Green” Device 
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/
  • Package: 8-pin, MSOP-8 (U)

Product Specifications

Product Parameters

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? No
Shift Bi-Directional
Prop Delay N/A
Ambient or Junction Temperature (°C) -40 to 85

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

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