74HCT181

INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications The IC06 74HC/HCT/HCU/HCMOS Logic Package Information The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines 74HC/HCT181 4-bit arithmetic logic unit Product specification Supersedes data of September 1993 File under Integrated Circuits, IC06 1998 Jun 10 Philips Semiconductors Product specification 4-bit arithmetic logic unit FEATURES Full carry look-ahead for high-speed arithmetic operation on long words Provides 16 arithmetic operations: add, subtract, compare, double, plus 12 others Provides all 16 logic operations of two variables: EXCLUSIVE-OR, compare, AND, NAND, NOR, OR plus 10 other logic operations Output capability: ICC category: MSI GENERAL DESCRIPTION The 74HC/HCT181 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT181 are 4-bit high-speed parallel Arithmetic Logic Units (ALU). Controlled by the four function select inputs (S0 to S3) and the mode control input (M), they can perform all the 16 possible logic operations or 16 different arithmetic operations on active HIGH or active LOW operands (see function table). When the mode control input (M) is HIGH, all internal carries are inhibited and the device3 performs logic operations on the individual bits as listed. When M is LOW, the carries are enabl...