SN74LS92NSR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter/Divider
• Characteristics:
  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • Compact package size
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The SN74LS92NSR is a 4-bit decade counter/divider with asynchronous clear. It is designed to be used in various digital applications that require counting or dividing signals.
• Packaging/Quantity: The SN74LS92NSR is typically sold in reels of 2500 units.

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 Stages: 4
• Output Type: TTL (Transistor-Transistor Logic)

Pin Configuration

The SN74LS92NSR has a total of 16 pins, which are assigned specific functions as follows:

1. CLK (Clock Input)
2. MR (Master Reset Input)
3. QA (Output A)
4. QB (Output B)
5. QC (Output C)
6. QD (Output D)
7. GND (Ground)
8. VCC (Power Supply)
9. NC (No Connection)
10. NC (No Connection)
11. NC (No Connection)
12. NC (No Connection)
13. NC (No Connection)
14. NC (No Connection)
15. NC (No Connection)
16. NC (No Connection)

Functional Features

• Asynchronous Clear: The SN74LS92NSR has an asynchronous master reset input (MR) that allows the user to reset the counter to its initial state at any time.
• Decade Counting: The IC can count in a decade sequence from 0 to 9 and then reset back to 0.
• Ripple Carry Output: The carry output (QC) can be used to cascade multiple SN74LS92NSR counters for higher counting ranges.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient counting/dividing of signals. - Low power consumption makes it suitable for battery-powered applications. - Wide operating voltage range provides flexibility in various electronic systems. - Compact package size saves board space.

Disadvantages: - Limited counting range (0 to 9) may not be sufficient for certain applications requiring larger counts. - TTL output levels may not be compatible with all modern digital systems that use different logic families.

Working Principles

The SN74LS92NSR operates based on the principle of synchronous sequential logic. It uses flip-flops and combinational logic to count input clock pulses and generate the desired output sequence. The asynchronous clear input allows for resetting the counter to its initial state independently of the clock signal.

Detailed Application Field Plans

The SN74LS92NSR can be used in various applications, including but not limited to: - Frequency division in digital frequency synthesizers - Event counting in industrial automation systems - Timekeeping circuits in electronic clocks and timers - Sequential control in digital circuit designs

Alternative Models

• SN74LS93NSR: Similar to SN74LS92NSR but with a different counting sequence (0 to 15).
• CD4017BE: A CMOS-based decade counter/divider with 10 outputs and more advanced features.
• MC14024BCL: A 7-stage binary counter with asynchronous reset and ripple carry output.

These alternative models offer different counting ranges and additional functionalities, providing options for specific application requirements.

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