CD74HC283
具有快速进位的高速 CMOS 逻辑 4 位二进制全加器
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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- Adds Two Binary Numbers
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- Full Internal Lookahead
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- Fast Ripple Carry for Economical Expansion
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- Operates with Both Positive and Negative Logic
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- Fanout Over Temperature Range
\- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads
\- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
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- Wide Operating Temperature Range . . . -55°C to 125°C
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- Balanced Propagation Delay and Transition Times
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- Significant Power Reduction Compared to LSTTL Logic ICs
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- HC Types
\- 2V to 6V Operation
\- High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
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- 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