Logic Adders

Logic adders are IC (integrated circuits) semiconductor devices that have been designed to perform binary addition in computers and processors.

What are logic adders?

Logic Adders are widely used in processors to calculate table indices and addresses. Logic adders perform binary addition and account for values carried in and out as well as performing an addition operation on three one-bit binary numbers.

Types of logic adders.

There are two main types of logic adders, a half adder and a full adder. The full adder produces a sum of the three inputs and carries the value. They can be combined with other full adders or work on its own. Logic adders can be composed of other gates and custom transistor-level circuits allowing them to implemented in many different ways. Half adders will perform addition of 2 individual binary digits, A and B and have 2 outputs, sum and carry.

Applications of logic adders.

Both half and full adders have a wide range of application use such as;

  • Digital Signal Processing
  • Digital calculators for arithmetic addition
  • Microcontrollers for arithmetic additions, timers and PC (program counter)
  • Computer ALU (arithmetic logic unit) to compute binary addition for CPU and GPU for graphics-based applications.

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Description Price Logic Family Maximum High Level Output Current Maximum Low Level Output Current Mounting Type Package Type Maximum Propagation Delay Time @ Maximum CL Dimensions Maximum Operating Supply Voltage Maximum Operating Temperature Minimum Operating Supply Voltage Minimum Operating Temperature Propagation Delay Test Condition Logic Function Number of Bits
RS Stock No. 368-6326
Mfr. Part No.SN74LS283N
HK$13.66
Each (In a Tube of 25)
units
LS -0.4mA 8mA Through Hole PDIP 24 ns @ 5 V 19.3 x 6.35 x 4.57mm 5.25 V +70 °C 4.75 V 0 °C 15pF Binary Full Adder 4bit
RS Stock No. 809-5876
Mfr. Part No.SN74LS283D
HK$16.264
Each (In a Pack of 5)
units
LS -0.4mA 8mA Surface Mount SOIC 24 ns@ 15 pF 10 x 4 x 1.5mm 5.25 V 70 °C 4.75 V 0 °C 15pF Binary Full Adder 4bit
RS Stock No. 145-7149
Mfr. Part No.CD74HC283M96
HK$2.069
Each (On a Reel of 2500)
units
HC -5.2mA 5.2mA Surface Mount SOIC 210 ns @ 2 V 9.9 x 3.91 x 1.58mm 6 V 125 °C 2 V -55 °C 50pF Binary Full Adder 4bit
RS Stock No. 145-7001
Mfr. Part No.SN74LS283D
HK$12.865
Each (In a Tube of 40)
units
LS -0.4mA 8mA Surface Mount SOIC 24 ns @ 15 pF 10 x 4 x 1.5mm 5.25 V 70 °C 4.75 V 0 °C 15pF Binary Full Adder 4bit
RS Stock No. 635-246
Mfr. Part No.CD74HCT283E
HK$8.09
Each
units
HCT -4mA 4mA Through Hole PDIP 49 ns @ 4.5 V 19.3 x 6.35 x 4.57mm 5.5 V +125 °C 4.5 V -55 °C 50pF Binary Full Adder 4bit
RS Stock No. 145-0685
Mfr. Part No.CD74HCT283E
HK$6.05
Each (In a Tube of 25)
units
HCT -4mA 4mA Through Hole PDIP 49 ns @ 4.5 V 19.3 x 6.35 x 4.57mm 5.5 V 125 °C 4.5 V -55 °C 50pF Binary Full Adder 4bit
RS Stock No. 662-7099
Mfr. Part No.CD74HC283M96
HK$5.398
Each (In a Pack of 5)
units
HC -5.2mA 5.2mA Surface Mount SOIC 210 ns @ 2 V 9.9 x 3.91 x 1.58mm 6 V +125 °C 2 V -55 °C 50pF Binary Full Adder 4bit