Professional IC Distribution & Technical Solutions

The M74LS393P is a dual 4-bit binary ripple counter IC manufactured by MIT (Mitsubishi Electric).

Specifications:

• Logic Family: LS-TTL (Low-Power Schottky TTL)
• Function: Dual 4-bit binary ripple counter
• Supply Voltage (Vcc): 4.75V to 5.25V (standard 5V operation)
• Operating Temperature Range: 0°C to +70°C (commercial grade)
• Package Type: 14-pin DIP (Dual In-line Package)
• Propagation Delay: Typically 20ns (clock to output)
• Maximum Clock Frequency: ~35MHz (typical)
• Output Current (High/Low): -0.4mA / 8mA
• Power Dissipation: ~20mW per counter

Descriptions:

• Contains two independent 4-bit binary counters with separate clock inputs.
• Each counter can be cleared asynchronously via a master reset (MR) input.
• Outputs are buffered for improved noise immunity.
• Compatible with standard TTL logic levels.

Features:

• Dual Counter Design: Two separate 4-bit counters in a single IC.
• Asynchronous Reset: Clear function via MR (active HIGH).
• Ripple Carry Output: Allows cascading for higher-bit counters.
• Low Power Consumption: LS-TTL technology ensures efficient operation.
• Wide Operating Voltage: Supports standard 5V TTL logic.

This IC is commonly used in frequency division, counting circuits, and digital timing applications.

*(Note: MIT refers to Mitsubishi Electric, a former manufacturer of this IC.)*