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Logic IC.

Part number	74LS283 4-Bit Binary Full Adder
Category	Integrated Circuits › Logic Gates
Package	DIP-16
Pins	16
Resolution	4 bit

74LS283 4-Bit Binary Full Adder pinout

Pin	Name	Type
1	S2	output
2	B2	input
3	A2	input
4	S1	output
5	A1	input
6	B1	input
7	C0	input
8	GND	ground
9	C4	output
10	S4	output
11	B4	input
12	A4	input
13	S3	output
14	A3	input
15	B3	input
16	VCC	power

Schematic symbol and footprint

Schematic symbol

Footprint: DIP-16_W7.62mm — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.