SN74LS393DG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic
• Characteristics: Dual 4-Bit Binary Counter
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: High-speed, low-power TTL logic IC
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• Operating Temperature Range: -40°C to 85°C
• Logic Family: LS
• Number of Bits: Dual 4-bit counters
• Maximum Clock Frequency: 33 MHz
• Propagation Delay: 15 ns
• Output Current: ±8 mA

Detailed Pin Configuration

The SN74LS393DG4 has a total of 14 pins, which are assigned as follows:

1. CLK A (Clock Input A)
2. RCO A (Ripple Carry Output A)
3. QD A (Output D A)
4. Q C A (Output C A)
5. GND (Ground)
6. Q B A (Output B A)
7. QA A (Output A A)
8. VCC (Supply Voltage)
9. QA B (Output A B)
10. QB B (Output B B)
11. GND (Ground)
12. QC B (Output C B)
13. QD B (Output D B)
14. RCO B (Ripple Carry Output B)

Functional Features

• Dual 4-bit binary counter with individual clock inputs
• Ripple carry outputs for cascading multiple counters
• Asynchronous reset capability for clearing the counter
• High-speed operation suitable for various digital applications
• Low power consumption for energy-efficient designs

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick data processing - Low power consumption reduces energy usage - Asynchronous reset feature provides flexibility in counter control

Disadvantages: - Limited number of bits (4-bit) may not be sufficient for certain applications requiring larger counters - Propagation delay of 15 ns may introduce timing issues in high-frequency systems

Working Principles

The SN74LS393DG4 is a dual 4-bit binary counter that operates based on TTL logic. It counts up or down depending on the clock input signals applied to CLK A and CLK B pins. The counter can be reset asynchronously using the RCO A and RCO B pins. The outputs QA A, QB A, QC A, and QD A represent the binary count of Counter A, while QA B, QB B, QC B, and QD B represent the binary count of Counter B.

Detailed Application Field Plans

The SN74LS393DG4 is commonly used in various digital applications, including but not limited to:

1. Frequency division circuits
2. Digital clocks and timers
3. Event counters
4. Industrial automation systems
5. Data communication equipment
6. Arithmetic logic units (ALUs)
7. Memory address decoding

Detailed and Complete Alternative Models

1. CD40193BE: CMOS 4-Bit Binary Up/Down Counter
2. MC14093BCP: CMOS Quad 2-Input NAND Schmitt Trigger
3. 74HC393N: High-Speed CMOS Logic Dual 4-Stage Binary Ripple Counter

These alternative models offer similar functionality and can be used as substitutes for the SN74LS393DG4 in various applications.

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