SN74LS243DR

Product Overview

• Category: Integrated Circuit
• Use: Logic Gate
• Characteristics: Quad Bus Transceiver
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: High-speed, low-power TTL logic device
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• High-Level Input Voltage: 2V min
• Low-Level Input Voltage: 0.8V max
• High-Level Output Voltage: 2.7V min
• Low-Level Output Voltage: 0.5V max
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 10ns max
• Power Dissipation: 500mW max

Detailed Pin Configuration

The SN74LS243DR has a total of 20 pins, which are divided into four groups:

1. Group A (Pins 1, 2, 3, 4): Bus A Inputs/Outputs
2. Group B (Pins 5, 6, 7, 8): Bus B Inputs/Outputs
3. Group C (Pins 9, 10, 11, 12): Enable Inputs
4. Group D (Pins 13, 14, 15, 16): Direction Control Inputs

Functional Features

• Quad bidirectional bus transceiver
• Non-inverting outputs
• 3-state outputs for bus isolation
• TTL-compatible inputs and outputs
• High-speed operation
• Low power consumption
• ESD protection on all inputs and outputs

Advantages and Disadvantages

Advantages: - Allows bidirectional data transfer between two buses - Provides bus isolation when needed - Compatible with TTL logic levels - Offers high-speed operation

Disadvantages: - Limited to a 4-bit data bus - Requires external control signals for direction and enable functions

Working Principles

The SN74LS243DR is a quad bus transceiver that enables bidirectional data transfer between two buses. It operates based on the control signals provided to its direction and enable inputs. When the direction control input is set to one state, the data flows from Bus A to Bus B, and when it is set to the other state, the data flows from Bus B to Bus A. The enable inputs control the output state, allowing the device to be placed in a high-impedance state for bus isolation.

Detailed Application Field Plans

The SN74LS243DR is commonly used in various applications, including:

1. Data communication systems
2. Microprocessor-based systems
3. Industrial control systems
4. Test and measurement equipment
5. Automotive electronics

Detailed and Complete Alternative Models

1. SN74LS244: Octal Buffer/Line Driver with 3-State Outputs
2. SN74LS245: Octal Bus Transceiver with 3-State Outputs
3. SN74LS640: Octal Bus Transceiver with 3-State Outputs and Inverting Inputs
4. SN74LS641: Octal Bus Transceiver with 3-State Outputs and Non-Inverting Inputs

These alternative models offer similar functionality and can be used as substitutes for the SN74LS243DR in different applications.

Word count: 399 words