U74HC244

UNISONIC TECHNOLOGIES CO., LTD U74HC244 OCTAL BUFFER AND LINE DRIVER WITH 3-STATE OUTPUT  DESCRIPTION The U74HC244 are octal buffer and line drivers with non-inverting 3-state outputs. When n OE is High, the outputs nQ will be in the high impedance.  FEATURES * Operation voltage range: 2 ~ 6V * 3-state output * Output Drive Capability: 15 LSTTL Loads  ORDERING INFORMATION Ordering Number Lead Free Halogen Free U74HC244L-D20-T U74HC244G-D20-T U74HC244L-S20-R U74HC244G-S20-R U74HC244L-R20-R U74HC244G-R20-R U74HC244L-P20-R U74HC244G-P20-R Package DIP-20 SOP-20 SSOP-20 TSSOP-20 CMOS IC DIP-20 SOP-20 SSOP-20 TSSOP-20 Packing Tube Tape Reel Tape Reel Tape Reel  MARKING www.unisonic.com.tw Copyright © 2022 Unisonic Technologies Co., Ltd 1 of 5 QW-R502-196.E U74HC244  PIN CONFIGURATION 1OE 1 1A1 2 2Y4 3 1A2 4 2Y3 5 1A3 6 2Y2 7 1A4 8 2Y1 9 GND 10  FUNCTION TABLE (each gate) INPUT(n OE ) H L L INPUT(nAn) ╳ H L  LOGIC DIAGRAM (positive logic) 1OE 2OE 1A1 1Y1 2A1 1A2 1Y2 2A2 1A3 1Y3 2A3 1A4 1Y4 2A4 Logic symbol 20 V CC 19 2OE 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1 OUTPUT(nYn) Z H L CMOS IC 1OE 1 EN 2Y1 2Y2 1A1 1A2 1A3 1A4 2 4 6 8 18 16 14 12 1Y1 1Y2 1Y3 1Y4 2Y3 2Y4 2OE 19 EN 2A1 2A2 2A3 2A4 11 13 15 17 8 7 5 3 2Y1 1Y2 1Y3 1Y4 IEC logic symbol UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R502-196.E U74HC244 CMOS IC  ABSOLUTE MAXIMUM RATINGS (unless otherwise specified) PARAMETER SYMBOL ...