74LS33 QUAD 2-INPUT NOR BUFFER (OPEN COLLECTOR)

The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC. 74LS33 QUAD 2-INPUT NOR BUFFER (OPEN COLLECTOR) containing four independent 2 input NOR buffer gates with open-collector outputs. Open collector outputs require resistive pull-up to perform logically but can deliver higher VOH levels and are commonly used in wired-AND applications

74LS33 Features

• Three Independent NOR Gates
• Standard Pin Configuration
• Fast Switching Times
• Operating Temperature up to 70°C
• Standard TTL Switching Voltages

74LS33 Specifications

Supply Voltage	4.75 – 5.25Vdc
Maximum Clock Frequency	40Mhz
Power Dissipation	2mW/gate @100kHz
Minimum Output Current	8mA
Propagation Delay	10nS
Fan Out (TTL Loads)	20

74LS33 Pinout Diagram

74LS33 Pin Description

Pin No	Pin Name	Description
1	C1	NOR BUFFER 1 Output
2	A1	NOR BUFFER 1 Input 1
3	B1	NOR BUFFER 1 Input 2
4	C2	NOR BUFFER 2 Output
5	A2	NOR BUFFER 2 Input 1
6	B2	NOR BUFFER 2 Input 2
7	GND	Ground
8	A3	NOR BUFFER 3 Input 1
9	B3	NOR BUFFER 3 Input 2
10	C3	NOR BUFFER 3 Output
11	A4	NOR BUFFER 4 Input 1
12	B4	NOR BUFFER 4 Input 2
13	C4	NOR BUFFER 4 Output
14	VCC	Positive Supply

74LS33 Circuit

Applications

• Mixer tank

74LS33 Alternative Equivalent

74LS02, 74LS27

Download 74LS33 QUAD 2-INPUT NOR BUFFER (OPEN COLLECTOR) Datasheet from the link given below.