SN74LS245DWR

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SN74LS245DWR

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IC TXRX NON-INVERT 5.25V 20SOIC

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Спецификации

Атрибут Ценность
Package Tape & Reel (TR),Cut Tape (CT)
Series 74LS
ProductStatus Active
LogicType Transceiver, Non-Inverting
NumberofElements 1
NumberofBitsperElement 8
OutputType 3-State
Current-OutputHighLow 15mA, 24mA
Voltage-Supply 4.75V ~ 5.25V
OperatingTemperature 0°C ~ 70°C (TA)
MountingType Surface Mount
Package/Case 20-SOIC (0.295, 7.50mm Width)

Обзор

Description

The SN74LS245DWR is an octal bus transceiver from Texas Instruments designed for asynchronous two-way communication between data buses. It is part of the 74LS245 family, utilizing TTL (Transistor-Transistor Logic) technology, which offers balanced performance across a variety of applications. The device features 8-bit bidirectional data transfer and operates in both send and receive modes, controlled by the DIR (Direction) and OE (Output Enable) pins.
Key specifications include:
- Operating voltage range: 4.75V to 5.25V
- High-speed operation with low power consumption
- High noise immunity
- Current sinking capability: 24 mA
The SN74LS245DWR is housed in a 20-pin SOIC (Small Outline Integrated Circuit) package, making it suitable for surface-mount applications. It is commonly used in digital communication systems, microprocessor memory interfaces, and other digital applications requiring efficient bus interfacing. Its robust performance and reliable functionality make it a popular choice in designing efficient data flow systems.

Equivalent

The SN74LS245DWR is an octal bus transceiver with 3-state outputs. Equivalent or similar products include:
1. 74HC245 - High-speed CMOS version with similar functionality.
2. 74HCT245 - TTL-compatible version of the HC245.
3. 74F245 - Fast TTL logic version.
4. 74ALS245 - Advanced low-power Schottky version.
5. 74ACT245 - CMOS technology with TTL-compatible inputs.
These alternatives may vary in speed, power consumption, and logic families, so verify compatibility with your specific application needs.

Features

The SN74LS245DWR is an octal bus transceiver with 3-state outputs, designed for asynchronous two-way communication between data buses. Key features include:
1. Bidirectional Data Transfer: Allows for data flow in both directions between buses.
2. 3-State Outputs: Provides high-impedance states for bus isolation, enabling multiple devices to connect to a single bus without interference.
3. High-Speed Operation: Supports fast data transfer rates, suitable for high-performance applications.
4. TTL Compatibility: Designed to interface seamlessly with TTL logic levels.
5. Wide Supply Voltage Range: Typically operates at 4.75V to 5.25V, supporting standard 5V systems.
6. Current Drive Capability: Can drive up to 24 mA output current, suitable for driving LEDs or other low-power loads.
7. Package Options: Available in SOIC (DWR) package, suited for surface-mount applications.
8. Enable Function: Features an output enable pin for additional control over data flow.
These specifications make the SN74LS245DWR ideal for use in digital systems requiring reliable data transfer and bus control.

Pinout

The SN74LS245DWR is a bus transceiver IC from the 74LS series, which is commonly used for bidirectional data communication between two buses. It has a 20-pin configuration. The primary function of the SN74LS245 is to allow data to flow in either direction between the A and B buses. This is controlled by the direction (DIR) pin. An output enable (OE) pin is also available to disable the outputs, putting the bus in a high-impedance state, which effectively isolates the bus from the circuit. This feature is useful for preventing bus contention in shared bus environments. The device operates with TTL logic levels and is known for its low power consumption and high-speed operation.

Manufacturer

The SN74LS245DWR is manufactured by Texas Instruments (TI). Texas Instruments is a global technology company that designs and manufactures semiconductors and various integrated circuits. They focus on developing analog chips and embedded processors that are used in a wide array of electronic devices. TI's products are integral components in applications such as industrial equipment, automotive electronics, personal electronics, and communications equipment. The company is well-known for its innovation and contributions to the advancement of technology in the electronics industry.

Application

The SN74LS245DWR is an octal bus transceiver designed for asynchronous two-way communication between data buses. Key application areas include:
1. Data Bus Isolation: Used for isolating different sections of a bus, allowing data transfer between microprocessors and memory or other peripherals.
2. Bidirectional Data Transfer: Facilitates communication between devices that operate at different voltage levels or require directional control.
3. Memory Addressing: Helps in the expansion of address lines in memory systems.
4. Peripheral Interfacing: Connects microcontrollers with ADCs, DACs, or other I/O devices.
5. Signal Integrity Improvement: Enhances the integrity of signals over long traces or in noisy environments.
These applications make it valuable in computer systems, embedded systems, and digital communication systems.

Package

The SN74LS245DWR is an octal bus transceiver with 3-state outputs and is typically housed in a 20-pin SOIC (Small Outline Integrated Circuit) package. The "DWR" suffix indicates it is a wide-body SOIC package designed for surface-mount technology.

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