SN74ALS191ANG4

Product Overview

Category

SN74ALS191ANG4 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in digital electronics for various applications such as counters, registers, and arithmetic logic units.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Compatibility with TTL (Transistor-Transistor Logic) inputs
• Output capability of driving up to 10 LSTTL (Low-Power Schottky Transistor-Transistor Logic) loads

Package

SN74ALS191ANG4 is available in a 16-pin DIP (Dual In-line Package) format.

Essence

The essence of SN74ALS191ANG4 lies in its ability to perform high-speed counting and data manipulation operations in digital circuits.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of SN74ALS191ANG4 ICs. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Logic Family: ALS
• Number of Pins: 16
• Maximum Clock Frequency: 25 MHz
• Counting Range: 0 to 15 (4-bit binary counter)

Detailed Pin Configuration

1. CLK (Clock Input)
2. MR (Master Reset Input)
3. CPD (Count Enable Parallel Input)
4. P0 (Parallel Data Input Bit 0)
5. P1 (Parallel Data Input Bit 1)
6. P2 (Parallel Data Input Bit 2)
7. P3 (Parallel Data Input Bit 3)
8. Q0 (Serial Data Output Bit 0)
9. Q1 (Serial Data Output Bit 1)
10. Q2 (Serial Data Output Bit 2)
11. Q3 (Serial Data Output Bit 3)
12. TC (Terminal Count Output)
13. GND (Ground)
14. QD (Serial Data Output Bit 4)
15. VCC (Supply Voltage)
16. CE (Count Enable Input)

Functional Features

• Up/Down Counting: SN74ALS191ANG4 can count up or down based on the input signals.
• Parallel Load: The parallel data inputs allow loading a specific value into the counter.
• Synchronous Operation: The counter operates synchronously with the clock signal.
• Terminal Count Output: The TC output indicates when the counter reaches its maximum count value.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient counting and data manipulation.
• Low power consumption makes it suitable for battery-powered applications.
• Wide operating voltage range provides flexibility in various electronic systems.
• Compatibility with TTL inputs allows easy integration with existing circuits.
• Output capability of driving multiple LSTTL loads simplifies circuit design.

Disadvantages

• Limited counting range (0 to 15) may not be sufficient for certain applications requiring larger counters.
• Availability of alternative models with additional features may limit the competitiveness of SN74ALS191ANG4 in some scenarios.

Working Principles

SN74ALS191ANG4 is a synchronous, reversible 4-bit binary counter. It counts up or down based on the input signals received at the CLK and CE inputs. The counter can be loaded with a specific value using the parallel data inputs (P0-P3). The CPD input determines whether the counter operates in parallel load or count mode. The TC output goes high when the counter reaches its maximum count value, providing a terminal count indication.

Detailed Application Field Plans

SN74ALS191ANG4 finds applications in various digital systems, including but not limited to: - Frequency dividers - Event counters - Digital clocks - Industrial automation - Communication systems - Automotive electronics

Detailed and Complete Alternative Models

While SN74ALS191ANG4 is a reliable and widely used 4-bit binary counter, there are alternative models available with additional features or expanded counting ranges. Some popular alternatives include: - SN74LS191: Similar functionality with a wider counting range (0 to 9). - CD40192: 4-bit synchronous up/down counter with a larger counting range (0 to 15).

These alternative models can be considered based on specific application requirements and desired functionalities.

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