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Logic IC.

Part number	74LS154 4-Bit Binary Decoder Demultiplexer
Category	Integrated Circuits › Logic Gates
Package	DIP-24
Pins	24
Resolution	4 bit

74LS154 4-Bit Binary Decoder Demultiplexer pinout

Pin	Name	Type
1	S0	output
2	S1	output
3	S2	output
4	S3	output
5	S4	output
6	S5	output
7	S6	output
8	S7	output
9	S8	output
10	S9	output
11	S10	output
12	GND	ground
13	S11	output
14	S12	output
15	S13	output
16	S14	output
17	S15	output
18	E0	input
19	E1	input
20	A3	input
21	A2	input
22	A1	input
23	A0	input
24	VCC	power

Schematic symbol and footprint

Schematic symbol

Footprint: DIP-24_W7.62mm — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.