74LS393 DIP Dual 4 Bit Binary Counter (74393 IC)

The 74LS393 is a dual 4 bit binary counter integrated circuit designed for digital counting and frequency division applications. It contains two independent 4 bit ripple counters that can count binary pulses and divide input frequencies for digital logic systems.

Each counter operates with a clock input and reset control allowing reliable counting operation in synchronous digital circuits. The IC belongs to the LS TTL logic family and is commonly used in timers event counters digital clocks and frequency divider circuits. The DIP package makes it suitable for breadboard prototyping and PCB based digital designs.

Key Features

• Dual 4 bit binary counter integrated circuit
• Two independent ripple counters in one IC
• Suitable for frequency division and counting circuits
• Reset control input for counter clearing
• TTL compatible logic levels
• Reliable operation in digital logic systems
• DIP package suitable for prototyping and PCB mounting

Specifications

• IC Model = 74LS393
• Equivalent IC = 74393
• Logic Type = Dual 4 bit binary counter
• Logic Family = LS TTL
• Number Of Counters = 2
• Counter Type = Ripple binary counter
• Package Type = DIP
• Operating Voltage = 4.75V to 5.25V
• Application = Frequency division counters and digital timing circuits

Interfaces

• CLKA = Clock input counter A
• RSTA = Reset input counter A
• QA0 = Counter A output bit
• QA1 = Counter A output bit
• QA2 = Counter A output bit
• QA3 = Counter A output bit
• CLKB = Clock input counter B
• RSTB = Reset input counter B
• QB0 = Counter B output bit
• QB1 = Counter B output bit
• QB2 = Counter B output bit
• QB3 = Counter B output bit
• VCC = Power supply
• GND = Ground