SN74LS93NSR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Binary Counter
• Characteristics:
  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • Compact package size
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The SN74LS93NSR is a 4-bit binary counter IC that can count up or down depending on the input signals.
• Packaging/Quantity: Available in reels of 2500 pieces.

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 30 MHz
• Number of Counting Bits: 4
• Output Type: TTL (Transistor-Transistor Logic)
• Input Type: TTL-compatible

Detailed Pin Configuration

The SN74LS93NSR has a total of 14 pins, each serving a specific function:

1. VCC: Positive power supply (+5V)
2. GND: Ground (0V)
3. CPD: Clock Pulse Disable (active low)
4. MR: Master Reset (active low)
5. CP0: Clock Pulse for Bit 0
6. CP1: Clock Pulse for Bit 1
7. CP2: Clock Pulse for Bit 2
8. CP3: Clock Pulse for Bit 3
9. Q0: Output for Bit 0
10. Q1: Output for Bit 1
11. Q2: Output for Bit 2
12. Q3: Output for Bit 3
13. TC: Terminal Count (output)
14. GND: Ground (0V)

Functional Features

• Up/Down Counting: The SN74LS93NSR can count up or down based on the input signals applied to the clock pulses.
• Asynchronous Reset: The master reset (MR) pin allows resetting the counter to its initial state.
• Terminal Count Output: The terminal count (TC) pin goes high when the counter reaches its maximum value, providing a signal for external circuitry.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient counting in time-critical applications. - Low power consumption makes it suitable for battery-powered devices. - Wide operating voltage range allows compatibility with various systems. - Compact package size saves board space.

Disadvantages: - Limited counting range of 4 bits may not be sufficient for certain applications requiring larger counters. - Lack of built-in carry/borrow functionality limits cascading multiple counters without additional circuitry.

Working Principles

The SN74LS93NSR operates as a synchronous counter, where the counting is synchronized with the clock pulses. When the clock pulse is applied, the counter increments or decrements based on the input signals. The master reset (MR) pin can be used to reset the counter to its initial state. The terminal count (TC) output provides a signal when the counter reaches its maximum value.

Detailed Application Field Plans

The SN74LS93NSR finds applications in various fields, including:

1. Digital Electronics: Used in digital circuits for counting and sequencing operations.
2. Communication Systems: Employed in frequency division multiplexing and synchronization circuits.
3. Industrial Automation: Integrated into control systems for counting and timing functions.
4. Automotive Electronics: Utilized in vehicle instrumentation and control units for various counting tasks.
5. Consumer Electronics: Incorporated in devices requiring counting capabilities, such as timers and counters.

Detailed and Complete Alternative Models

1. CD40192BE: 4-bit Synchronous Up/Down Counter IC
2. MC14516B: 4-Bit Binary Counter IC
3. 74HC193: High-Speed CMOS Logic 4-Bit Binary Counter IC
4. CD4516BE: Presettable Up/Down Counter IC

These alternative models offer similar functionality to the SN74LS93NSR and can be used as replacements in various applications.

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