PI6ULS5V9627A 4 Channel Level Translating Fast-Mode Plus I2C-bus/SMbus Repeater Features Description 4 channel, bidirectional buffer isolates capacitance and allows 540pF on either side of the device at 1 MHz and The PI6ULS5V9627A is a CMOS integrated circuit intended 2 up to 4000 pF at lower speeds for Fast-mode Plus (Fm+) I C-bus or SMBus applications. It Voltage level translation from 0.6V to 5.5V and from can provide level shifting between low voltage (down to 0.6V) 2.2V to 5.5V and higher voltage (2.2V to 5.5V) in mixed-mode applications. Port A operating supply voltage range of 0.6V to 5.5V The PI6ULS5V9627A enables the system designer to isolate with normal levels( 0.4VCC(A) + 0.8 V VCC(B) ) two halves of a bus for both voltage and capacitance, 2 Port B operating supply voltage range of 2.2V to 5.5V accommodating more I C devices or longer trace length. It 2 with static offset level also permits extension of the IC-bus by providing 2 5V tolerant I C-bus and enable pins bidirectional buffering for both the data (SDA) and the clock 0 Hz to 1 MHz clock frequency (the maximum system (SCL) lines, thus enabling two buses of 540 pF at 1 MHz or up operating frequency may be less than 1MHz because of to 4000 pF at lower speeds. The SDA and SCL pins are the delays added by the repeater) overvoltage tolerant and are high-impedance when the Active HIGH repeater enable input referenced to VCC(B) PI6ULS5V9627A is unpowered. Open-drain input/outputs The 2.2V to 5.5V bus port B drivers have the static level offset, Latching free operation while the adjustable voltage bus port A drivers eliminate the Supports arbitration and clock stretching across the static offset voltage. This results in a LOW on the port B repeater translating into a nearly 0V LOW on the port A which Accommodates Standard-mode, Fast-mode and Fast- accommodates the smaller voltage swings of lower voltage mode Plus I2C-bus devices, SMBus (standard and high logic. The EN pin is referenced to V and can also be used CC(B) power mode), PMBus and multiple masters to turn the drivers on and off under system control. 2 Powered-off high-impedance I C-bus pins ESD protection exceeds 8000V HBM per JESD22-A114 Package: TQFN-16L 4x4 and QSOP-16L PI6ULS5V9627A www.diodes.com December 2017 Document Number DS40171 Rev 1-2 Diodes Incorporated 1 PI6ULS5V9627A Pin Configuration SCLA1 VCCA VCCB SCLB1 SDAA1 SDAB1 GND EN1 TQFN VCCB QSOP VCCA SCLB2 SCLA2 SDAA2 GND EN2 SDAB2 QSOP-16L(Top View) TQFN4x4-16L(Top View) Pin Description Pin No. Pin Name Description TQFN QSOP 3 1 SDAA1 serial data port A bus 1 (1) 4 2 GND supply ground (0 V) (2) 5 3 VCCA port A supply voltage (0.6 V to 5.5V) 6 4 SCLA2 serial clock port A bus 2 7 5 SDAA2 serial data port A bus 2 (1) 8 6 GND supply ground (0 V) 9 7 EN2 active HIGH repeater enable input 2 10 8 SDAB2 serial data port B bus 2 11 9 SCLB2 serial clock port B bus 2 (3) 12 10 VCCB port B supply voltage (2.2 V to 5.5 V) 13 11 EN1 active HIGH repeater enable input 1 14 12 SDAB1 serial data port B bus 1 15 13 SCLB1 serial clock port B bus 1 (3) 16 14 VCCB port B supply voltage (2.2 V to 5.5 V) (2) 1 15 VCCA port A supply voltage (0.6 V to 5.5 V) 2 16 SCLA1 serial clock port A bus 1 Note: (1) The two GND pins need to be connected to the ground, cant be floating. (2) The two VCCA pins need to be connected to the power supply, cant be floating. (3) The two VCCB pins need to be connected to the power supply, cant be floating. PI6ULS5V9627A www.diodes.com December 2017 Document Number DS40171 Rev 1-2 Diodes Incorporated 2