HD74LV21A

HD74LV21A Dual 4-input Positive AND Gates ADE-205-255 (Z) 1st Edition March 1999 Description The HD74LV21A performs the Boolean functions Y = ABCD or Y = A+B + C + D in positive logic. Low-voltage and high-speed operation is suitable for the battery-powered 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 ±6 mA (@VCC = 3.0 V to 3.6 V), ±12 mA (@VCC = 4.5 V to 5.5 V) Function Table Inputs A H L X X X B H X L X X C H X X L X D H X X X L Output Y H L L L L Note: H: High level L: Low level X: Immaterial HD74LV21A Pin Arrangement 1A 1 1B NC 2 3 14 VCC 13 2D 12 2C 11 NC 10 2B 9 2A 8 2Y 1C 4 1D 1Y 5 6 GND 7 (Top view) 2 HD74LV21A 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 Input clamp current Output clamp current Continuous output current Continuous current through VCC or GND Maximum power dissipation at Ta = 25°C (in still air)*3 I IK I OK IO I CC or IGND PT –20 ±50 ±25 ±50 785 500 mA mA mA mA mW VI < 0 VO < 0 or VO > VCC VO = 0 to VCC SOP TSSOP Storage tempe...