PI6ULS5V9627A (Not Recommended for New Design (NRND))

Product Description

The PI6ULS5V9627A 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 PI6ULS5V9627A 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 PI6ULS5V9627A 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 V_CC(B) and can also be used to turn the drivers on and off under system control.

Features

• 4 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
• Port A operating supply voltage range of 0.6V to 5.5V with normal levels( 0.4V_CC(A) + 0.8 V ≤ V_CC(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 V_CC(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
• Package: TQFN-16L 4x4 and QSOP-16L