U74LVC640

UNISONIC TECHNOLOGIES CO., LTD U74LVC640 OCTAL BUS TRANSCEIVER WITH 3-STATE INVERTING OUTPUTS „ DESCRIPTION CMOS IC The U74LVC640 is designed for asynchronous communication between data buses and has inverting outputs. While the direction-control(DIR) input is high, data transmits from the A bus to the B bus. In contrast, Data transmits from the B bus to the A bus DIR input is low. The output-enable(OE) will disable the device and isolate from the buses when high voltage is applied on it. TSSOP-20 „ FEATURES * Supply Voltage Range From 1.2V to 3.6V * Input Accept Voltages up to 5.5V * Partial-Power-Down Mode Operation * Max tPD is 6.3ns at 3.3V „ ORDERING INFORMATION Ordering Number U74LVC640G-P20-R Package TSSOP-20 www.DataSheet.net/ Packing Tape Reel www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Ltd 1 of 5 QW-R502-412.A Datasheet pdf - http://www.DataSheet4U.co.kr/ U74LVC640 „ PIN CONFIGURATION DIR A1 A2 A3 A4 A5 A6 A7 A8 1 2 3 4 5 6 7 8 9 20 VCC 19 OE CMOS IC 18 B1 17 B2 16 15 14 13 B3 B4 B5 B6 12 B7 11 B8 GND 10 „ FUNCTION TABLE FUNCTION DIR X Isolation H Transmit data from A bus to B bus, B=A L Transmit data from B bus to A bus, A=B L: LOW voltage level X: Don’t care www.DataSheet.net/ INPUT OE H L L Note: H: HIGH voltage level „ LOGIC DIAGRAM (Negative Logic) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R502-412.A Datasheet pdf - http://www.DataSheet4U.co.kr/ U74LVC640 „ ABSOLUTE MAXIMUM RATING CMOS IC PARAM...