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SN74ACT245DW

Name: SN74ACT245DW
Rating: 4.7 (12 reviews)

IC TXRX NON-INVERT 5.5V 20SOIC

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製造商。部分 #SN74ACT245DW
包 20-SOIC
資料表 SN74ACT245DW DataSheet
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規格

Package	Tube
Series	74ACT
ProductStatus	Active
LogicType	Transceiver, Non-Inverting
NumberofElements	1
NumberofBitsperElement	8
OutputType	3-State
Current-OutputHighLow	24mA, 24mA
Voltage-Supply	4.5V ~ 5.5V
OperatingTemperature	-40°C ~ 85°C (TA)
MountingType	Surface Mount
Package/Case	20-SOIC (0.295, 7.50mm Width)

概述

Description

The SN74ACT245DW is a high-speed, octal bus transceiver designed by Texas Instruments, ideal for data communication between two different voltage levels. It features 8 transmission lines and is capable of bidirectional data transfer, making it suitable for applications involving microcontrollers, digital signal processors, and other logic devices.
Key specifications include a wide operating voltage range from 4.5V to 5.5V, with a maximum propagation delay of 6 ns (at 25°C) and low power consumption. The device has three-state outputs, allowing for multiple devices to share the same bus without interference. It operates in both send and receive modes, controlled by direction control pins.
The SN74ACT245DW is housed in a 20-pin TSSOP package, ensuring a compact footprint for space-constrained designs. Its robust design and compatibility with standard TTL, CMOS, and HCMOS logic levels make it a versatile choice for enhancing communication in digital systems.

Features

The SN74ACT245DW is an octal buffer/driver designed for high-speed data transmission. Key features include:
1. Bus Interface: It supports 3-state outputs, allowing multiple devices to share the same data bus.
2. Voltage Range: Operates with a supply voltage of 4.5V to 5.5V, compatible with TTL levels.
3. High-Speed Performance: Offers fast propagation delay of around 7 ns at 5V, enabling rapid data transfer.
4. Low Power Consumption: Designed for low power operation, making it suitable for battery-powered applications.
5. Wide Operating Temperature: Functions effectively within a temperature range of -40°C to +125°C.
6. Input/Output Logic Levels: Supports both TTL and CMOS logic levels ensuring versatility in circuit designs.
7. Package Type: Available in a TSSOP-20 package, facilitating easy integration into compact PCB designs.
These features make the SN74ACT245DW ideal for applications requiring reliable data buffering and driving capabilities in digital systems.

Package

The SN74ACT245DW is packaged in a TSSOP (Thin Shrink Small Outline Package) with 20 pins. It is designed for surface mounting and has a compact size suitable for high-density applications.

Pinout

The SN74ACT245DW is an octal bus transceiver with 3-state outputs. It has a total of 20 pins.
Pin Functions:
- Pins 1-8 (A1-A8): These are the data inputs for the A bus.
- Pins 19-12 (B1-B8): These are the data outputs for the B bus.
- Pin 9 (GND): Ground connection.
- Pin 10 (DIR): Direction control input; determines the direction of data flow between the A and B buses.
- Pin 11 (OE): Output enable; when low, enables the outputs.
- Pin 20 (Vcc): Power supply connection.
The device facilitates bidirectional data transfer and is commonly used in applications requiring data buffering and level shifting.

Manufacturer

The SN74ACT245DW is manufactured by Texas Instruments (TI), a leading global semiconductor company. Founded in 1930 and headquartered in Dallas, Texas, Texas Instruments specializes in designing and manufacturing a wide range of electronic components, including analog and digital semiconductors, embedded processors, and various integrated circuits. The company serves diverse markets such as automotive, industrial, communications, and consumer electronics. TI is known for its innovation in semiconductor technology and its commitment to providing high-quality products and solutions that enable advancements in various applications.

Application

The SN74ACT245DW is a high-speed, octal bus transceiver designed for data communication between devices. Its application areas include:
1. Data Buffering: Enhancing signal integrity in data buses.
2. Level Shifting: Interfacing between different logic levels.
3. Microcontroller Communication: Connecting microcontrollers to peripherals.
4. Memory Access: Facilitating data transfer between memory devices.
5. Industrial Automation: Used in control systems for signal routing.
Overall, it is commonly employed in digital circuits requiring bidirectional data flow.

Equivalent

Equivalent products to the SN74ACT245DW include the SN74HC245, SN74HCT245, and 74LVC245A. These chips are also octal bus transceivers, but they may operate at different voltage levels and speed. Ensure compatibility with your specific application parameters such as voltage, current, and logic family. Always check the datasheets for detailed specifications.