SN74LVCH245AZXYR

Product Overview

Category: Integrated Circuit
Use: Level Shifter/Transceiver
Characteristics: Low-Voltage, High-Speed, Octal Bus Transceiver
Package: 20-pin TSSOP (Thin Shrink Small Outline Package)
Essence: Bi-directional voltage level translator/transceiver
Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

Supply Voltage Range: 1.65V to 3.6V
Input Voltage Range: 0V to VCC
Output Voltage Range: 0V to VCC
Maximum Operating Frequency: 400 MHz
Number of Channels: 8
Logic Family: LVCH

Detailed Pin Configuration

The SN74LVCH245AZXYR has a total of 20 pins, which are assigned as follows:

OE (Output Enable) - Active Low Output Enable
A1 - Data Input/Output for Channel 1
B1 - Data Input/Output for Channel 1
A2 - Data Input/Output for Channel 2
B2 - Data Input/Output for Channel 2
A3 - Data Input/Output for Channel 3
B3 - Data Input/Output for Channel 3
GND (Ground) - Ground Connection
B4 - Data Input/Output for Channel 4
A4 - Data Input/Output for Channel 4
B5 - Data Input/Output for Channel 5
A5 - Data Input/Output for Channel 5
B6 - Data Input/Output for Channel 6
A6 - Data Input/Output for Channel 6
B7 - Data Input/Output for Channel 7
A7 - Data Input/Output for Channel 7
B8 - Data Input/Output for Channel 8
A8 - Data Input/Output for Channel 8
VCC - Power Supply Voltage
DIR (Direction Control) - Direction Control Input

Functional Features

Bi-directional voltage level translation between two different voltage domains.
Allows bidirectional data transfer between buses operating at different voltage levels.
Supports both push-pull and open-drain output configurations.
Provides non-inverting level shifting with 3-state outputs.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - High-speed operation enables efficient data transfer. - Bi-directional capability simplifies system design. - 3-state outputs provide flexibility in bus sharing applications.

Disadvantages: - Limited to 8 channels, may not be suitable for applications requiring a higher number of channels. - Requires careful consideration of voltage compatibility to avoid signal degradation or damage.

Working Principles

The SN74LVCH245AZXYR is designed to translate signals between two voltage domains. It utilizes a combination of MOSFETs and CMOS logic to achieve bidirectional level shifting. The direction of data flow is controlled by the DIR pin. When DIR is high, data is transferred from the A side to the B side, and when DIR is low, data is transferred from the B side to the A side. The OE pin is used to enable or disable the outputs.

Detailed Application Field Plans

The SN74LVCH245AZXYR is commonly used in various applications where voltage level translation is required. Some typical application fields include:

Microcontroller interfacing with peripherals operating at different voltage levels.
Communication interfaces between devices with different logic families.
Bus communication between systems with different power supply voltages.
Level shifting in battery-powered devices with low-voltage requirements.

Detailed and Complete Alternative Models

SN74LVC245A: Similar functionality, but operates at a higher voltage range (1.65V to 5.5V).
SN74LVCH244A: Octal buffer/line driver with similar voltage level translation capabilities.
SN74LVC1T45: Single-bit level shifter/transceiver for applications requiring minimal channels.

These alternative models provide options based on specific voltage requirements, channel count, and package preferences.

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10 pirs û bersivên hevpar ên têkildarî sepana SN74LVCH245AZXYR di çareseriyên teknîkî de navnîş bikin

Sure! Here are 10 common questions and answers related to the application of SN74LVCH245AZXYR:

Q: What is SN74LVCH245AZXYR? A: SN74LVCH245AZXYR is a type of integrated circuit (IC) commonly used as a bidirectional level shifter or voltage translator.
Q: What is the purpose of using SN74LVCH245AZXYR in technical solutions? A: SN74LVCH245AZXYR is used to interface between two systems operating at different voltage levels, ensuring proper signal translation and compatibility.
Q: What voltage levels can SN74LVCH245AZXYR handle? A: SN74LVCH245AZXYR can handle voltage levels ranging from 1.65V to 5.5V.
Q: How many channels does SN74LVCH245AZXYR have? A: SN74LVCH245AZXYR has 8 bidirectional channels, allowing for simultaneous translation of multiple signals.
Q: Can SN74LVCH245AZXYR be used for both level shifting and voltage translation? A: Yes, SN74LVCH245AZXYR can be used for both level shifting (e.g., 3.3V to 5V) and voltage translation (e.g., 5V to 1.8V).
Q: What is the maximum data transfer rate supported by SN74LVCH245AZXYR? A: SN74LVCH245AZXYR supports data transfer rates up to 400 Mbps, making it suitable for high-speed applications.
Q: Does SN74LVCH245AZXYR require external pull-up or pull-down resistors? A: No, SN74LVCH245AZXYR has built-in weak pull-up and pull-down resistors, eliminating the need for external components in most cases.
Q: Can SN74LVCH245AZXYR be used in both digital and analog applications? A: SN74LVCH245AZXYR is primarily designed for digital applications, but it can also be used in certain low-frequency analog applications.
Q: Is SN74LVCH245AZXYR compatible with other logic families like TTL or CMOS? A: Yes, SN74LVCH245AZXYR is compatible with various logic families, including TTL and CMOS, making it versatile for different system designs.
Q: Are there any special considerations when using SN74LVCH245AZXYR in a design? A: It is important to ensure proper power supply decoupling and signal integrity practices, such as minimizing trace lengths and avoiding excessive capacitive loads, to achieve optimal performance with SN74LVCH245AZXYR.

Please note that these answers are general and may vary depending on specific application requirements. Always refer to the datasheet and consult the manufacturer's guidelines for accurate information.