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Logic IC.

Part number	74LS221 Dual Monostable Multivibrator
Category	Integrated Circuits › Logic Gates
Package	DIP-16
Pins	16

74LS221 Dual Monostable Multivibrator pinout

Pin	Name	Type
1	~A	input
2	B	input
3	~CLR	input
4	~Q	output
5	Q	output
6	Cext	input
7	RCext	input
8	GND	ground
9	~A	input
10	B	input
11	~CLR	input
12	~Q	output
13	Q	output
14	Cext	input
15	RCext	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.