PI3VT3245-A

Features Near-Zero propagation delay Low On-Resistance switches connect inputs to outputs 2.5V to 3.3V Supply voltage operation 2.5V or 1.8V switching Packaging (Pb-free & Green available): – 20-pin, 150-mil wide plastic QSOP (Q) – 20-pin, 173-mil wide plastic TSSOP (L) Applications 3.3V to 2.5V level shifting (voltage translation) 2.5V to 1.8V level shifting (voltage translation) Block Diagram A0 B0 A7 B7 BE PI3VT3245-A 8-Bit, 2-Port, Low Voltage Translator Bus Switch Description Pericom Semiconductor’s PI3VTseries of logic circuits are produced using the Company’s advanced submicron CMOS technology, achieving industry leading performance. The PI3VT3245-A is a 2.5V or 3.3V 8-bit, 2-port bus switch designed with a low On-Resistance (5Ω). The switches are turned ON or enabled by the Bus Enable (BE) input signal. Given a 3.3V supply and an input voltage of 3.3V, the switch translates to an output voltage of 2.5V. Similarly, when operated with a 2.5V supply and given 2.5V inputs, the device translates the outputs to 1.8V. Pin Configuration NC A0 A1 A2 A3 A4 A5 A6 A7 GND 1 2 3 4 5 6 7 8 9 10 20 VCC 19 BE 18 B0 17 B1 16 B2 15 B3 14 B4 13 B5 12 B6 11 B7 Truth Table(1) Function Disconnect Connect Notes: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance BE H L 12-0245 A0-7 Hi-Z B0-7 Pin Description Pin Name Description BE Bus Enable Input (Active Low) A0-A7 Bus A B0-B7 Bus B VCC Power GND Ground 1 10/04/11 PI3VT324...