HD74LV244A

HD74LV244A Octal Buffers / Drivers with 3-state Outputs ADE-205-246 (Z) 1st Edition March 1999 Description The HD74LV244A has eight line drivers with three-state outputs in a 20-pin package. Four non-inverters are included in one circuit. Each circuit can be independently controlled by the enable signal 1OE or 2OE, which enables outputs when receiving a low-level signal. Low-voltage operation is suitable for batterypowered products (e.g., notebook computers), and the low-power consumption extends the battery life. Features VCC = 2.0 V to 5.5 V operation All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V) All outputs VO (Max.) = 5.5 V (@VCC = 0 V) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.3 V (@VCC = 3.3 V, Ta = 25°C) Output current ±8 mA (@VCC = 3.0 V to 3.6 V), ±16 mA (@VCC = 4.5 V to 5.5 V) Function Table Inputs OE L L H Note: H: L: X: Z: High level Low level Immaterial High impedance A H L X Output Y H L Z HD74LV244A Pin Arrangement 1OE 1 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 2 3 4 5 6 7 8 9 20 VCC 19 2OE 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1 GND 10 (Top view) 2 HD74LV244A Absolute Maximum Ratings Item Supply voltage range Input voltage range* 1 1, 2 Symbol VCC VI VO Ratings –0.5 to 7.0 –0.5 to 7.0 –0.5 to VCC + 0.5 –0.5 to 7.0 Unit V V V Conditions Output voltage range* * Output: H or L VCC: OFF or Output: Z Input clamp current Output clamp current Continuous output current Continuous cu...