The 74HC/74HCT high-speed Si-gate CMOS logic

The 74HC/74HCT high-speed Si-gate CMOS logic family combin es the low power advantages of the HEF4000B family with t he high speed and drive capability of the Low power Schottky TTL (LSTTL). The 74HC/74HCT family has the same pin-out as the 74 series and provides the same circuit functions. The family includes several HEF4000B family circuits that do not have TTL counterparts, and have some special circuits. The basic family of buffered devices, designated as xx74HCxxxx, operates at CMOS input logic levels for high-noise immunity with negligible typical quiescent supply and input current. The family requires a power supply of 2 V to 6 V. A subset of the fam ily, designated as xx74HCTxxxx with the same features as the “HC-types” will operate wit h a standard TTL power supply of 5 V (±10 %) and logic input levels (0.8 V to 2.0 V) for use as pin-to-pin compatible CMOS replacements for reducing power consumption without loss

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