SN74ACT245PW

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SN74ACT245PW

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IC TXRX NON-INVERT 5.5V 20TSSOP

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Attribut Wert
Package / Case Tube
Series 74ACT
Part Status Active
Logic Type Transceiver, Non-Inverting
Number of Elements 1
Number of Bits per Element 8
Output Type 3-State
Current - Output High Low 24mA, 24mA
Voltage - Supply 4.5V ~ 5.5V
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount

Übersicht

Description

The SN74ACT245PW is an octal bus transceiver with 3-state outputs, designed for asynchronous two-way communication between data buses. It is part of the 74ACT series, which is known for its high-speed CMOS logic technology. This device is often used in applications requiring signal buffering, level shifting, or isolation between buses.
Key features include:
1. Bidirectional Data Transfer: Allows data to flow in both directions, controlled by a direction pin (DIR).
2. 3-State Outputs: The outputs can be in one of three states - high, low, or high-impedance - controlled by the output enable pin (OE), which allows connection to multiple bus lines without interference.
3. High-Speed Operation: Supports fast operation due to its advanced CMOS technology.
4. Wide Operating Voltage Range: Typically operates with a supply voltage of 4.5V to 5.5V.
5. Low Power Consumption: Consumes less power compared to older logic families.
The device is commonly used in digital circuits where bus interfacing, buffering, or signal integrity is required. It comes in various package types, with the PW suffix indicating a TSSOP package.

Equivalent

The SN74ACT245PW is an octal bus transceiver from the 74ACT series. Equivalent products include the 74HC245 74HCT245, and 74LVC245, though you should check voltage levels, speed, and other specifications to ensure compatibility. These equivalents are available from various manufacturers such as NXP, ON Semiconductor, and Fairchild. Always verify the pin configuration and electrical characteristics to ensure they meet your specific requirements.

Features

The SN74ACT245PW is an octal bus transceiver with 3-state outputs designed for asynchronous two-way data communication between data buses. It features an active-low output enable (OE) and direction control (DIR) to determine the data flow direction. Key features of the SN74ACT245PW include:
1. High-Speed Operation: It supports high-speed data transmission, making it suitable for various performance-critical applications.
2. 3-State Outputs: The device can isolate bus lines to prevent signal interference, allowing multiple devices to connect to a common bus.
3. Wide Operating Voltage Range: Operates typically from 4.5V to 5.5V, providing versatility in various power supply environments.
4. Low Power Consumption: Designed to consume minimal power, contributing to energy-efficient system designs.
5. TTL-Compatible Inputs: Ensures compatibility with TTL logic levels for seamless integration into existing systems.
6. Latch-Up Performance: Provides robust latch-up performance exceeding 100 mA per JESD 78, Class II standards.
These features make the SN74ACT245PW an ideal choice for interfacing and buffering applications in digital systems.

Pinout

The SN74ACT245PW is an octal bus transceiver with three-state outputs, commonly used for digital signal buffering and level shifting between buses. It features 20 pins and is housed in a TSSOP (Thin Shrink Small Outline Package).
Key functions and pin configuration include:
1. VCC (Pin 20): Power supply input.
2. GND (Pin 10): Ground.
3. Direction (DIR, Pin 1): Determines the direction of data flow. When high, data flows from the A bus to the B bus; when low, data flows from the B bus to the A bus.
4. Output Enable (OE, Pin 19): Active-low signal that enables the outputs. When high, the outputs are in a high-impedance state.
5. A0-A7 (Pins 2-9): Data inputs/outputs for the A bus.
6. B0-B7 (Pins 11-18): Data inputs/outputs for the B bus.
The device is particularly useful in applications requiring bidirectional data flow between buses, offering high-speed operation and compatibility with TTL logic levels.

Manufacturer

The SN74ACT245PW is manufactured by Texas Instruments (TI). Texas Instruments is a global technology company that designs and manufactures semiconductors and various integrated circuits, which are used in a wide array of electronic applications. TI is known for its innovation in the semiconductor industry and provides solutions for industries such as industrial, automotive, personal electronics, and communications equipment. The company focuses on developing analog chips and embedded processors that help customers create electronic systems that are more efficient, safe, and enjoyable. Texas Instruments has a strong emphasis on research and development, often contributing to advancements in technology through its extensive patent portfolio.

Application

The SN74ACT245PW is a bus transceiver designed for asynchronous communication between data buses. It is commonly used in applications that require bidirectional data transfer and isolation between bus lines, such as memory interfaces, microprocessor systems, and peripheral device communication. Its features, like high-speed operation and low power consumption, make it suitable for high-performance computing systems, digital signal processing, and communication equipment. Additionally, it is often used in applications requiring logic level shifting and buffering to maintain signal integrity across different voltage domains.

Package

The SN74ACT245PW is a part of the SN74ACT245 series and comes in a TSSOP (Thin Shrink Small Outline Package) with 20 pins. This package type is designed for surface mounting on PCBs, offering a compact form factor for space-constrained applications.

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