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Unisonic Technologies
U74AUC244
U74AUC244 is OCTAL BUFFER/DRIVER manufactured by Unisonic Technologies.
DESCRIPTION This octal buffer/driver is operational at 0.8V to 2.7V VCC, but is designed specifically for 1.65V to 1.95V VCC operation. The U74AUC244 is organized as two 4-bit line drivers with separate output-enable ( OE ) inputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. This device is fully specified for partial-power-down applications using IOFF. The IOFF circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. - FEATURES - Optimized for 1.8V Operation and is 3.6V I/O Tolerant to Support Mixed-Mode Signal Operation - Partial-Power-Down Mode Operation - Low Power Consumption, 20μA Max. ICC - ±8m A Output Drive at 1.8V - ORDERING INFORMATION Ordering Number Lead Free Halogen Free U74AUC244L-S20-R U74AUC244G-S20-R Package SOP-20 SSOP-20 Packing Tape Reel U74AUC244G-S20-R (1)Packing Type (2)Package Type (3)Green Package (1) R: Tape Reel (2) R20: SSOP-20 (3) G: Halogen Free and Lead Free, L: Lead Free - - - MARKING 20 19 18 17 16 15 14 13 12 11 UTC U74AUC244 1 2 3 4 5 6 7 8 9 10 Date Code L: Lead Free G: Halogen Free Lot Code .unisonic..tw Copyright © 2020 Unisonic Technologies Co., Ltd 1 of 7 QW-R126-072.a - PIN CONFIGURATION Advance 1OE 1 1A1 2 2Y4 3 1A2 4 2Y3 5 1A3 6 2Y2 7 1A4 8 2Y1 9 GND 10 20 VCC 19 2OE 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1 - FUNCTION TABLE (each gate) INPUT( OE ) L L H INPUT(A) H L X - LOGIC DIAGRAM (Positive Logic) OUTPUT(Y) H L...