SN74LS92DR

Product Overview

Category

SN74LS92DR belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in digital electronic systems for various applications such as counters, frequency dividers, and other sequential logic functions.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Schottky-clamped TTL inputs
• Buffered outputs
• Directly compatible with most TTL families
• 14-pin plastic dual in-line package (PDIP)

Package and Quantity

SN74LS92DR is packaged in a 14-pin plastic dual in-line package. It is typically sold in quantities of one unit or multiples thereof.

Specifications

• Supply Voltage: 4.75V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Logic Family: LS-TTL
• Number of Pins: 14
• Input Type: Schottky-clamped TTL
• Output Type: Buffered

Detailed Pin Configuration

1. Clock Input A
2. Clock Input B
3. Clock Input C
4. Clock Input D
5. Output QD
6. Output QC
7. Output QB
8. Output QA
9. Ground (GND)
10. Output QE
11. Carry Output
12. Enable Input
13. VCC (+5V)
14. Output QF

Functional Features

The SN74LS92DR is a 4-bit decade counter with an asynchronous reset feature. It can count from 0 to 9 and then reset back to 0. The counter advances on the rising edge of the clock input when the enable input is high. It has buffered outputs that provide both sinking and sourcing current capabilities.

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient counting and frequency division.
• Low power consumption makes it suitable for battery-powered applications.
• Wide operating voltage range ensures compatibility with various systems.
• Schottky-clamped TTL inputs provide protection against voltage spikes.

Disadvantages

• Limited counting range (0 to 9) may not be suitable for applications requiring larger counters.
• Lack of built-in carry lookahead feature may result in slower performance when cascading multiple counters.

Working Principles

The SN74LS92DR operates based on the principle of synchronous sequential logic. It uses flip-flops and combinational logic to count and reset based on clock signals and control inputs. The counter advances by one on each rising edge of the clock input, provided that the enable input is high. When the count reaches 9, the next clock pulse resets the counter back to 0.

Detailed Application Field Plans

SN74LS92DR can be used in a wide range of applications, including: - Digital frequency dividers - Event counters - Timekeeping circuits - Industrial automation systems - Electronic gaming devices - Traffic light controllers

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to SN74LS92DR include: - CD4017BE: Decade counter with 10 outputs - MC14024B: 7-stage binary counter - 74HC163: 4-bit synchronous binary counter

These alternatives may have different specifications, pin configurations, and package types, but they serve similar purposes in digital electronic systems.

In conclusion, SN74LS92DR is a versatile 4-bit decade counter integrated circuit commonly used in digital electronic systems. Its high-speed operation, low power consumption, and wide operating voltage range make it suitable for various applications. However, its limited counting range and lack of carry lookahead feature should be considered when selecting this product for specific projects.