CD74HCT283E Datasheet PDF - TI

●Description

●The ’HC283 and ’HCT283 binary full adders add two 4-bit binary numbers and generate a carry-out bit if the sum exceeds 15.

●Because of the symmetry of the add function, this device can be used with either all active-high operands (positive logic) or with all active-low operands (negative logic). When using positive logic the carry-in input must be tied low if there is no carry-in.

●Features

●• Adds Two Binary Numbers

●• Full Internal Lookahead

●• Fast Ripple Carry for Economical Expansion

●• Operates with Both Positive and Negative Logic

●• Fanout (Over Temperature Range)

●  - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

●  - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

●• Wide Operating Temperature Range . . . -55℃ to 125℃

●• Balanced Propagation Delay and Transition Times

●• Significant Power Reduction Compared to LSTTL Logic ICs

●• HC Types

●  - 2V to 6V Operation

●  - High Noise Immunity: NIL= 30%, NIH= 30% of VCC at VCC= 5V

●• HCT Types

●  - 4.5V to 5.5V Operation

●  - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min)

●  - CMOS Input Compatibility, Il ≤1µA at VOL, VOH