MM54HC533/MM74HC533TRI-STATEÉ Octal D-Type Latchwith Inverted OutputsGeneral Des criptionThese high speed OCTAL D-TYPE LATCHES utilize advancedsilicon-gate CMOS technology. They possess thehigh noise immunity and low power consumption of standardCMOS integrated circuits, as well as the ability to drive15 LS-TTL loads. Due to the large output drive capabilityand the TRI-STATE feature, these devices are ideally suitedfor interfacing with bus lines in a bus organized system.When the LATCH ENABLE input is high, the data presenton the D inputs will appear inverted at the Q outputs. Whenthe LATCH ENABLE goes low, the inverted data will be retainedat the Q outputs until LATCH ENABLE returns highagain. When a high logic level is applied to the OUTPUTCONTROL input, all outputs go to a high impedance state,regardless of what signals are present at the other inputsand the state of the storage elements.The 54HC/74HC logic family is speed, function, and pin-outcompatible with the standard 54LS/74LS logic family. Allinputs are protected from damage due to static discharge byinternal diode clamps to VCC and ground.FeaturesY Typical propagation delay: 18 nsY Wide operating voltage range: 2 to 6 voltsY Low input current: 1 mA maximumY Low quiescent current: 80 mA, maximum (74HC Series)Y Compatible with bus-oriented systemsY Output drive capability: 15 LS-TTL loads
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