TC7MPB9307FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC7MPB9307FK Low Voltage/Low Power 8-Bit Dual Supply Bus Switch The TC7MPB9307FK is a CMOS 8-bit dual-supply bus switch that can provide an interface between two nodes at different voltage levels. The TC7MPB9307FK can be connected to two independent power supplies. V supports 1.8-V, 2.5-V and 3.3-V power CCA supplies, whereas V supports 2.5-V, 3.3-V and 5.0V power CCB supplies. Bidirectional level-shifting is possible by simply adding external pull-up resistors between the An/Bn data lines and the V /V CCA CCB supplies. There is no restriction on the relative magnitude of the Weight: 0.03 g (typ.) An and Bn voltages both the An and Bn data lines can be pulled up to arbitrary power supplies. The Output Enable ( OE ) input controls the connection or isolation of two bus systems on the V and V CCA CCB sides. The OE input is common for all the eight bits of the data lines thus the TC7MPB9307FK is used as a single eight-bit bus switch. When OE is Low, the switch is on, and An is connected to Bn. When OE is High, the switch is open. The TC7MPB9307FK supports power-down protection at the OE input, with OE being 5.5-V tolerant. The channels consist of n-type MOSFETs. All the inputs provide protection against electrostatic discharge. Features Operating voltage: 1.8-V to 2.5-V, 1.8-V to 3.3-V, 1.8-V to 5.0-V, 2.5-V to 3.3-V, 2.5-V to 5.0-V or 3.3-V to 5.0-V bidirectional interface Operating voltage: V = 1.65 to 5.0 V, V = 2.3 to 5.5 V CCA CCB Low ON-resistance: R = 5.0 (typ.) ON (ON-resistance test circuit: V = 0 V, I = 30 mA, V = 3.0 V , V = 4.5 V) IS IS CCA CCB ESD performance: Machine model 200 V Human body model 2000 V 5.5-V tolerance and power-down protection at the Output Enable input. Packages: VSSOP(US20) Start of commercial production 2007-11 2008-2017 2017-09-08 1 Toshiba Electronic Devices & Storage Corporation TC7MPB9307FK Pin Assignment (top view) 1 20 V V CCB CCA A1 2 19 A2 18 B1 3 A3 17 B2 4 5 16 B3 A4 A5 6 15 B4 A6 7 14 B5 A7 8 13 B6 A8 9 12 B7 GND 10 11 B8 (top view) Truth Table Inputs Function OE L A port = B port H Disconnect Circuit Schematic VCCA VCCB Gate level OE converter A1 B1 A8 B8 2008-2017 2017-09-08 2 Toshiba Electronic Devices & Storage Corporation