HD74HCT244 - Hitachi Semiconductor

HD74HCT244 Octal Buffers/Line Drivers/Line Receivers(noninverted 3-state outputs)

The HD74HCT244 is a non-inverting buffer and has two active low enable (1G and 2G ). Each enable independently controls 4 buffers. This device does not have schmitt trigger inputs. Features • • • • • • LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility High Speed Operation: tpd (A to Y) = 10 ns typ (CL = 50 pF) High Output Current: .

Features

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• LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility High Speed Operation: tpd (A to Y) = 10 ns typ (CL = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 4.5 to 5.5 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Inputs G H L L H L X Z : : : : A X H L High level Low level Irrelevant Off (high-impedance) state of a 3-state output Output Y Z H L HD74HCT244 Pin Arrangement 1G 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 1 2 3 4 5 6 7 8 9 20 VCC 19 2G 18 1Y1 17 2A4 16 1Y2 15.