SN74LS642NSR

Product Overview

• Category: Integrated Circuit
• Use: Logic Level Translator
• Characteristics:
  • High-speed operation
  • Wide voltage range
  • Low power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Logic level translation between different voltage levels
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 10ns (typical)
• Maximum Quiescent Current: 4mA

Detailed Pin Configuration

The SN74LS642NSR has a total of 20 pins. The pin configuration is as follows:

1. A1
2. B1
3. Y1
4. GND
5. A2
6. B2
7. Y2
8. VCC
9. A3
10. B3
11. Y3
12. OE
13. A4
14. B4
15. Y4
16. GND
17. A5
18. B5
19. Y5
20. VCC

Functional Features

• Logic level translation between different voltage levels
• Bidirectional data flow
• Non-inverting outputs
• Enable/disable control for each channel

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - Wide voltage range enables compatibility with various systems - Low power consumption reduces energy usage

Disadvantages: - Limited number of channels (5 in this case) - Requires external enable/disable control for each channel

Working Principles

The SN74LS642NSR is a logic level translator that allows bidirectional data transfer between different voltage levels. It consists of five channels, each capable of translating logic signals from one voltage level to another. The device operates by using a combination of MOSFETs and resistors to achieve the desired translation.

When an input signal is applied to one of the channels, the internal circuitry detects the voltage level and translates it to the corresponding output voltage level. The non-inverting outputs ensure that the logic state of the input signal is maintained during translation.

The enable/disable control (OE) pin allows for individual channel selection. When the OE pin is low, the corresponding channel is enabled, and data can flow through it. Conversely, when the OE pin is high, the channel is disabled, and no data transfer occurs.

Detailed Application Field Plans

The SN74LS642NSR finds applications in various fields where logic level translation is required. Some of the detailed application field plans include:

1. Microcontroller Interfaces: The device can be used to interface microcontrollers operating at different voltage levels, enabling seamless communication between them.

2. Communication Systems: It can be employed in communication systems to translate logic signals between different voltage domains, ensuring compatibility between different components.

3. Industrial Automation: The logic level translator can be utilized in industrial automation systems to interface sensors, actuators, and control units operating at different voltage levels.

4. Automotive Electronics: In automotive electronics, where multiple voltage domains exist, the SN74LS642NSR can facilitate communication between different subsystems.

Detailed and Complete Alternative Models

1. SN74LVC1T45DBVR: Single-bit dual-supply bus transceiver with configurable voltage translation and 3-state outputs.
2. TXB0108PWR: 8-bit bidirectional voltage-level translator with automatic direction sensing and integrated pull-up resistors.
3. PCA9306DCUR: Dual bidirectional I2C-bus and SMBus voltage-level translator with automatic direction sensing and reset.

These alternative models offer similar functionality to the SN74LS642NSR and can be considered as alternatives based on specific requirements and constraints.

In conclusion, the SN74LS642NSR is an integrated circuit logic level translator that enables bidirectional data transfer between different voltage levels. Its high-speed operation, wide voltage range, and low power consumption make it suitable for various applications in different fields.