HD74LVC244A Datasheet | Hitachi Semiconductor

Description The HD74LVC244A has eight line drivers with three state outputs in a 20 pin package. This device is a non inverting buffer and has two active low enables (1G and 2G). Each enable independently controls four buffers. Low voltage and high speed operation is suitable at the battery drive product (note type personal puter) and low power consumption extends the life of a battery for long time operation. Features - - - - - - VCC = 2.0 V to 5.5 V All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V) All outputs VOUT (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 ±24 m A (@VCC = 3.0 V to 5.5 V) Function Table Inputs G H L L H: L: X: Z: High level Low level Immaterial High impedance A X H L Output Y Z H L Pin Arrangement 1G 1 1A1 2 2Y4 3 1A2 4 2Y3 5 1A3 6 2Y2 7 1A4 8 2Y1 9 GND 10 20 VCC 19 2G 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1 (Top view) Absolute Maximum Ratings Item Supply voltage Input diode current Input voltage Output diode current Symbol VCC I IK VI I OK Ratings - 0.5 to 6.0 - 50 - 0.5 to 6.0 - 50 50 Output voltage VO - 0.5 to VCC +0.5 - 0.5 to 6.0 Output current VCC, GND current / pin Storage temperature IO I CC or IGND Tstg ±50 100 - 65 to 150 Unit V m A V m A m A V V m A m A °C VO = - 0.5 V VO = VCC +0.5 V Output "H" or "L" Output "Z" VCC:OFF VI = - 0.5 V Conditions Note: The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two of which may be realized at the same time. Remended Operating Conditions Item Supply voltage Symbol VCC Ratings 1.5 to 5.5 2.0 to 5.5 Input / output voltage VI VO 0 to 5.5 0 to V CC 0 to 5.5 Operating temperature Output current Ta I OH - 40 to 85 - 12 - 24 I OL - 1 - 2 Unit V V V V V °C m A m A m A m A ns/V Conditions Data retention At operation G, A Output "H" or "L" Output "Z" or VCC:OFF VCC = 2.7 V VCC = 3.0 V...