M74HC21TTR

两个4输入与门 DUAL 4-INPUT AND GATE

DESCRIPTION

The M74HC21 is an high speed CMOS DUAL 4-INPUT AND GATE fabricated with silicon gate C2MOS technology.

The internal circuit is composed of 3 stages including buffer output, which enables high noise immunity and stable output.

All inputs are equipped with protection circuits against static discharge and transient excess voltage.

■ HIGH SPEED:

   tPD = 11ns TYP. at VCC = 6V

■ LOW POWER DISSIPATION:

   ICC = 1µAMAX. at TA=25°C

■ HIGH NOISE IMMUNITY:

   VNIH = VNIL = 28 % VCC MIN.

■ SYMMETRICAL OUTPUT IMPEDANCE:

   |IOH| = IOL = 4mA MIN

■ BALANCED PROPAGATION DELAYS:

   tPLH = tPHL

■ WIDE OPERATING VOLTAGE RANGE:

   VCC OPR = 2V to 6V

■ PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 21