ESCRIPTION
The AC20 is an advanced high-speed CMOS DUAL 4-INPUT NAND GATE fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology.
   
■ HIGH SPEED: tPD = 4 ns (TYP.) at VCC = 5V
■ LOW POWER DISSIPATION:
    ICC = 4 µA (MAX.) at TA = 25 °C
■ HIGH NOISE IMMUNITY:
    VNIH = VNIL = 28% VCC (MIN.)
■ 50Ω TRANSMISSION LINE DRIVING
    CAPABILITY
■ SYMMETRICAL OUTPUT IMPEDANCE:
    |IOH| = IOL =24 mA (MIN)
■ BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL
■ OPERATING VOLTAGE RANGE:
    VCC (OPR) = 2V to 6V
■ PIN AND FUNCTION COMPATIBLE WITH
    74 SERIES 20
■ IMPROVED LATCH-UP IMMUNITY