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U74AC240L-P20-R Datasheet(PDF) 1 Page - Unisonic Technologies |
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U74AC240L-P20-R Datasheet(HTML) 1 Page - Unisonic Technologies |
1 / 6 page UNISONIC TECHNOLOGIES CO., LTD U74AC240 CMOS IC www.unisonic.com.tw 1 of 6 Copyright © 2011 Unisonic Technologies Co., Ltd QW-R502-675.A OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS DESCRIPTION The U74AC240 is a octal buffers/drivers with 3-state outputs. It is organized as two 4-bit buffers/drivers with separate output-enable ( OE ) inputs. When OE is high, the Y outputs are in a high-impedance state, and the outputs neither load nor drive the bus lines. When OE is low, the device passes inverted data from the A inputs to the Y outputs. The U74AC240 is designed to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pull-up resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. FEATURES * Wide Supply Voltage Range from 2V to 6V * Max tPD of 6.5 ns from A to Y at 5V * Low Power Consumption, ICC = 4μA (Max.) at 5.5V * ±24mA Output Driver at 5.5V ORDERING INFORMATION Ordering Number Package Packing Lead Free Halogen Free U74AC240L-P20-R U74AC240G-P20-R TSSOP-20 Tape Reel U74AC240L-P20-T U74AC240G-P20-T TSSOP-20 Tube |
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