SN74HC245DWR

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SN74HC245DWR

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IC TXRX NON-INVERT 6V 20SOIC

  • FabricanteTexas Instruments

  • Peça do Fabricante #SN74HC245DWR

  • Pacote SOIC (DW)-20

  • Em Estoque2512

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Especificações

Atributo Valor
Package Tape & Reel (TR),Cut Tape (CT),Bulk
Series 74HC
ProductStatus Active
LogicType Transceiver, Non-Inverting
NumberofElements 1
NumberofBitsperElement 8
OutputType 3-State
Current-OutputHighLow 7.8mA, 7.8mA
Voltage-Supply 2V ~ 6V
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 20-SOIC (0.295, 7.50mm Width)

Visão Geral

Description

The SN74HC245DWR is an octal bus transceiver with three-state outputs, designed for asynchronous two-way communication between data buses. It is part of Texas Instruments' 74HC series and operates with a wide voltage range from 2V to 6V, making it suitable for various digital logic applications. This device features bidirectional data flow, controlled by a direction (DIR) input, and a high-impedance state controlled by an output enable (OE) input, which ensures efficient data management on the bus.
Key features include:
1. High-Speed Operation: The device supports fast data transfer, making it suitable for high-performance applications.
2. Low Power Consumption: It is designed for minimal power usage, which is advantageous in battery-powered devices.
3. Wide Compatibility: Compatible with TTL devices, it can be easily integrated into existing systems.
4. Robust Design: It is designed to withstand electrostatic discharge and other environmental conditions.
The SN74HC245DWR is typically used in applications requiring controlled direction of data flow, such as memory interfacing, data acquisition systems, and microprocessor communication.

Equivalent

The SN74HC245DWR is an octal bus transceiver from Texas Instruments. Equivalent products include the 74HC245 from NXP, ON Semiconductor, and STMicroelectronics. These components offer similar functionality and electrical characteristics, making them suitable replacements in most applications. Always check datasheets for compatibility regarding pin configuration, voltage levels, and other specifications.

Features

The SN74HC245DWR is an octal bus transceiver from Texas Instruments, designed for asynchronous two-way communication between data buses. Key features include:
1. High-Speed Operation: It offers fast switching speeds, suitable for high-performance applications.
2. Wide Operating Voltage Range: The device operates from 2V to 6V, making it versatile for various power supply configurations.
3. Low Power Consumption: It features a low quiescent current, contributing to energy efficiency.
4. 3-State Outputs: This allows for multiplexed transmission of data and reduces bus contention.
5. Bidirectional Data Flow: The device facilitates two-way communication with the help of direction and enable controls.
6. TTL-Compatible Inputs: It ensures compatibility with TTL logic levels.
7. High Drive Capability: The device can drive up to 15 LSTTL loads.
8. Latch-Up Performance: The device is rated for 250 mA latch-up performance, enhancing reliability.
9. Package Type: Offered in a 20-pin SOIC package, making it suitable for surface-mount applications.
These features make the SN74HC245DWR suitable for a wide range of digital logic level interfacing applications.

Pinout

The SN74HC245DWR is a 20-pin IC that functions as an octal bus transceiver. It is designed for asynchronous two-way communication between data buses. The device can drive up to 6 mA of output current and is used to isolate bus lines to reduce capacitive loading on bus lines, which can improve signal integrity and transmission speed.
The pin configuration is as follows:
1. Control Pins:
- OE (Output Enable, active low): Enables or disables the transceiver function.
- DIR (Direction Control): Determines the direction of data flow.
2. Data Pins:
- A1 to A8: Data bus A inputs/outputs.
- B1 to B8: Data bus B inputs/outputs.
3. Power Pins:
- VCC: Power supply pin.
- GND: Ground pin.
When OE is low, data can be transmitted from A to B if DIR is high, or from B to A if DIR is low. When OE is high, both A and B outputs are in high-impedance state, effectively isolating the buses.

Manufacturer

The SN74HC245DWR is manufactured by Texas Instruments, a global semiconductor company. Texas Instruments designs and produces a wide range of electronic components, with a focus on analog and embedded processing products. The company serves various industries, including automotive, industrial, personal electronics, communications equipment, and enterprise systems, providing essential technology to enable modern electronic systems.

Application

The SN74HC245DWR is an octal bus transceiver designed for asynchronous communication between data buses. It is commonly used in microcontroller and microprocessor interfacing to facilitate bidirectional data flow. Key application areas include:
1. Data Bus Isolation: Enables the separation of different sections of a data bus.
2. Signal Buffering: Improves signal integrity by buffering signals over long distances.
3. Level Shifting: Facilitates interfacing between devices operating at different voltage levels.
4. Memory Addressing: Assists in addressing memory in embedded systems.
5. Peripheral Interfacing: Connects peripherals to main processors efficiently.
Its high-speed CMOS technology and low power consumption make it suitable for various digital circuits in consumer electronics, automotive systems, and industrial automation.

Package

The SN74HC245DWR is an integrated circuit with a package type called SOIC-20 (Small Outline Integrated Circuit with 20 pins). It is designed for surface-mount technology on printed circuit boards, offering a compact form factor suitable for space-constrained applications.

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