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CD74HCT283

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 Outpu...

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SeekIC No. : 004312138 Detail

CD74HCT283: Features: • Adds Two Binary Numbers• Full Internal Lookahead• Fast Ripple Carry for Economical Expansion• Operates with Both Positive and Negative Logic• Fanout (Over T...

CD74HCT283 Data Sheet

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Part Number:
CD74HCT283
Supply Ability:
5000

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Product Details

Description



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 1mA at VOL, VOH


Pinout

Connection Diagram


Specifications

DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V
DC Input Diode Current, IIK
For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK
For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . ...±20mA
DC Output Source or Sink Current per Output Pin, IO
For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA
DC VCC or Ground Current, ICC  . . . . . . . . . . . . . . . . . . . . . . ±50mA 


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.




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