HD74LVC2244A

www.DataSheet4U.com HD74LVC2244A Octal Buffers / Line Drivers with 3–state Outputs ADE-205-234 (Z) Preliminary 1st. Edition December 1998 Description The HD74LVC2244A has eight line drivers with three state outputs in a 20 pin package. This device is a noninverting buffer and has two active low enables (1G and 2G). Each enable independently controls four buffers. All outputs, which are designed to sink up to 12 mA, include equivalent 26 Ω resistors to reduce overshoot and undreshoot. When VCC is between 0 and 1.5 V, the device is in the high impedance state during power up or power down. Low voltage and high speed operation is suitable at battery drive product (note type personal computer) and low power consumption extends the life of a battery for long time operation. Features VCC = 1.65 to 5.5 V All inputs VIH (Max) = 5.5 V (@VCC = 0 to 5.5 V) All outputs VO (Max) = 5.5 V (@VCC = 0 V or output off state) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C) High output current ±12 mA (@V CC = 3.0 to 5.5 V) All outputs have equivalent 26 Ω series resistors, so no external resistors are required HD74LVC2244A Function Table Inputs G H L L H : High level L : Low level X : Immaterial Z : High impedance A X H L Z H L Output Y Pin Arrangement 1G 1 1A1 2Y4 2 3 20 VCC 19 2G 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1 1A2 4 2Y3 1A3 2Y2 1A4 2Y1 5 6 7 8 9 GND 10 (Top view) 2 HD74LVC2244...