SN74LVC245APWTG4

Overview

Product Category: Integrated Circuit (IC)

Use: Level Shifter/Transceiver

Characteristics: - Bidirectional voltage level translation - Supports both 3.3V and 5V systems - High-speed operation - Low power consumption - Schmitt-trigger inputs for noise immunity - Available in TSSOP package

Package: TSSOP-20

Essence: The SN74LVC245APWTG4 is a bidirectional level shifter/transceiver IC that allows voltage translation between different logic levels in digital systems.

Packaging/Quantity: The SN74LVC245APWTG4 is typically sold in reels of 2500 units.

Specifications

Supply Voltage Range: 1.65V to 5.5V
Input Voltage Range: 0V to VCC
Output Voltage Range: 0V to VCC
Maximum Operating Frequency: 100MHz
Propagation Delay: 2.6ns (typical)
Input Capacitance: 3pF (typical)
Output Capacitance: 6pF (typical)
Operating Temperature Range: -40°C to +85°C

Pin Configuration

The SN74LVC245APWTG4 has a total of 20 pins arranged as follows:

___________ A1 |1 20| VCC A2 |2 19| B1 A3 |3 18| B2 A4 |4 17| B3 A5 |5 SN74LVC245APWTG4 16| B4 A6 |6 15| B5 A7 |7 14| B6 A8 |8 13| B7 GND |9 12| B8 OE |10 11| DIR ¯¯¯¯¯¯¯¯¯¯¯

Functional Features

Bidirectional voltage level translation between two systems operating at different logic levels.
Supports both 3.3V and 5V systems, allowing seamless integration between them.
High-speed operation enables efficient data transfer.
Low power consumption helps in reducing overall system power requirements.
Schmitt-trigger inputs provide noise immunity, ensuring reliable signal transmission.

Advantages

Versatile level shifter/transceiver suitable for a wide range of applications.
Supports bidirectional communication, eliminating the need for separate devices for each direction.
Wide supply voltage range allows compatibility with various systems.
Fast propagation delay ensures minimal signal distortion during translation.
Compact TSSOP package offers space-saving benefits.

Disadvantages

Limited to voltage level translation and does not perform any other functions.
May require additional external components for certain applications.
Not suitable for high-frequency applications above 100MHz.

Working Principles

The SN74LVC245APWTG4 operates by receiving input signals from one system and translating them to the appropriate voltage levels for another system. It uses a combination of transistors and logic gates to achieve bidirectional voltage level translation. The direction of translation is controlled by the DIR pin, while the OE (Output Enable) pin enables or disables the outputs.

Detailed Application Field Plans

The SN74LVC245APWTG4 finds applications in various fields, including:

Microcontroller Interfacing: It can be used to interface microcontrollers operating at different logic levels, enabling communication between them.
Mixed Voltage Systems: It facilitates communication between mixed voltage systems, such as connecting a 3.3V microcontroller to a 5V peripheral device.
Level Shifting in Communication Protocols: It is commonly used in serial communication protocols like I2C, SPI, and UART to ensure proper voltage translation between devices with different logic levels.

Detailed and Complete Alternative Models

SN74LVC245APW: Similar to SN74LVC245APWTG4 but without the tape and reel packaging.
SN74LVC245ADGVR: Same functionality as SN74LVC245APWTG4 but available in a different package (TSSOP-20).

These alternative models offer similar features and performance characteristics, providing flexibility in choosing the most suitable option for specific applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SN74LVC245APWTG4 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of SN74LVC245APWTG4:

Q: What is SN74LVC245APWTG4? A: SN74LVC245APWTG4 is a bidirectional octal bus transceiver that can be used for voltage level translation and signal buffering in various technical solutions.
Q: What is the operating voltage range of SN74LVC245APWTG4? A: SN74LVC245APWTG4 operates within a voltage range of 1.65V to 5.5V.
Q: How many bidirectional channels does SN74LVC245APWTG4 have? A: SN74LVC245APWTG4 has 8 bidirectional channels, allowing it to handle 8 data lines simultaneously.
Q: Can SN74LVC245APWTG4 be used for level shifting between different voltage domains? A: Yes, SN74LVC245APWTG4 can be used as a voltage level translator to enable communication between devices operating at different voltage levels.
Q: What is the maximum data transfer rate supported by SN74LVC245APWTG4? A: SN74LVC245APWTG4 supports data transfer rates up to 100 Mbps.
Q: Does SN74LVC245APWTG4 have any built-in ESD protection? A: Yes, SN74LVC245APWTG4 has built-in ESD protection, making it more robust against electrostatic discharge events.
Q: Can SN74LVC245APWTG4 be used in both push-pull and open-drain configurations? A: Yes, SN74LVC245APWTG4 can be configured for both push-pull and open-drain output modes, providing flexibility in different applications.
Q: What is the power supply voltage range for SN74LVC245APWTG4? A: SN74LVC245APWTG4 requires a power supply voltage between 1.65V and 5.5V.
Q: Can SN74LVC245APWTG4 handle bi-directional communication between different logic families? A: Yes, SN74LVC245APWTG4 is compatible with various logic families, making it suitable for bidirectional communication between different types of devices.
Q: Is SN74LVC245APWTG4 available in different package options? A: Yes, SN74LVC245APWTG4 is available in different package options, such as TSSOP and SOIC, to accommodate different PCB layouts and assembly processes.

Please note that these answers are general and may vary depending on specific application requirements. It's always recommended to refer to the datasheet and consult the manufacturer for detailed information.