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
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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...
