規格
| 屬性 | 價值 |
| 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 non-inverting octal bus transceiver from Texas Instruments, designed for asynchronous two-way communication between data buses. It functions with TTL inputs and has a high drive capability, making it suitable for driving heavy loads or long transmission lines. The device features three-state outputs, which can be enabled or disabled using the OE (Output Enable) pin, allowing for bus isolation when needed. Its operating voltage typically ranges from 4.5V to 5.5V, making it compatible with 5V systems.
Key features include low power consumption, with only 8 µA of maximum ICC, and fast switching speeds, with typical propagation delays of around 7.5 ns. The SN74ACT245DW is pin-compatible with the familiar 74xx245 series and comes in a 20-pin SOIC (Small Outline Integrated Circuit) package, making it suitable for surface-mount applications. These features make it ideal for applications requiring efficient data transfer and control across multiple components, such as computers, communication devices, and industrial equipment.
Key features include low power consumption, with only 8 µA of maximum ICC, and fast switching speeds, with typical propagation delays of around 7.5 ns. The SN74ACT245DW is pin-compatible with the familiar 74xx245 series and comes in a 20-pin SOIC (Small Outline Integrated Circuit) package, making it suitable for surface-mount applications. These features make it ideal for applications requiring efficient data transfer and control across multiple components, such as computers, communication devices, and industrial equipment.
Equivalent
The SN74ACT245DW is an octal bus transceiver with 3-state outputs. Equivalent products include:
1. 74HC245
2. 74HCT245
3. 74F245
4. 74LS245
These chips generally offer similar functionality in terms of bus transceiving with 3-state outputs but may differ in speed, power consumption, and logic families. Always check the datasheets for specific electrical characteristics and compatibility.
1. 74HC245
2. 74HCT245
3. 74F245
4. 74LS245
These chips generally offer similar functionality in terms of bus transceiving with 3-state outputs but may differ in speed, power consumption, and logic families. Always check the datasheets for specific electrical characteristics and compatibility.
Features
The SN74ACT245DW is an octal bus transceiver with 3-state outputs, designed for asynchronous communication between data buses. Key features include:
1. Octal Bus Transceiver: Provides 8-bit bidirectional data flow, allowing transfer between the A and B buses.
2. 3-State Outputs: Features include the ability to enable or disable the outputs, providing control over data flow.
3. High-Speed CMOS Technology: Offers fast switching speeds with low power consumption.
4. TTL-Compatible Inputs: Can interface with TTL logic levels, making it versatile for different applications.
5. Wide Operating Voltage Range: Operates on a voltage range of 4.5 V to 5.5 V, suitable for various digital systems.
6. Output Drive Capability: Capable of driving 24 mA outputs, allowing for connection to multiple inputs in different systems.
7. Low Power Consumption: Designed for minimal power usage, enhancing overall efficiency.
8. Standard 20-Pin SOIC Package: Comes in a standard surface-mount package, facilitating easy integration into circuit designs.
9. Bidirectional Data Flow: Allows data transfer in either direction, controlled by the direction pin.
10. Gated Inputs: Featuring input-enable control for enhanced data management.
1. Octal Bus Transceiver: Provides 8-bit bidirectional data flow, allowing transfer between the A and B buses.
2. 3-State Outputs: Features include the ability to enable or disable the outputs, providing control over data flow.
3. High-Speed CMOS Technology: Offers fast switching speeds with low power consumption.
4. TTL-Compatible Inputs: Can interface with TTL logic levels, making it versatile for different applications.
5. Wide Operating Voltage Range: Operates on a voltage range of 4.5 V to 5.5 V, suitable for various digital systems.
6. Output Drive Capability: Capable of driving 24 mA outputs, allowing for connection to multiple inputs in different systems.
7. Low Power Consumption: Designed for minimal power usage, enhancing overall efficiency.
8. Standard 20-Pin SOIC Package: Comes in a standard surface-mount package, facilitating easy integration into circuit designs.
9. Bidirectional Data Flow: Allows data transfer in either direction, controlled by the direction pin.
10. Gated Inputs: Featuring input-enable control for enhanced data management.
Pinout
The SN74ACT245DW is an octal bus transceiver from Texas Instruments, featuring 20 pins in a SOIC (Small Outline Integrated Circuit) package. This device is designed for asynchronous two-way communication between data buses. It allows for bidirectional data flow, making it suitable for bus-oriented applications.
Key functions include:
- Bidirectional Data Transfer: It can transfer data from bus A to bus B or from bus B to bus A, based on the direction control (DIR) input.
- 3-State Outputs: The device features output enable (OE) control, which allows the outputs to be placed in a high-impedance state, effectively disconnecting them from the bus and allowing for multiplexed operations on the bus.
The pins are typically designated for power (Vcc and GND), data input/output (bus A and bus B lines), direction control (DIR), and output enable (OE).
For its specific pin configuration and detailed electrical characteristics, you should refer to the official datasheet from Texas Instruments.
Key functions include:
- Bidirectional Data Transfer: It can transfer data from bus A to bus B or from bus B to bus A, based on the direction control (DIR) input.
- 3-State Outputs: The device features output enable (OE) control, which allows the outputs to be placed in a high-impedance state, effectively disconnecting them from the bus and allowing for multiplexed operations on the bus.
The pins are typically designated for power (Vcc and GND), data input/output (bus A and bus B lines), direction control (DIR), and output enable (OE).
For its specific pin configuration and detailed electrical characteristics, you should refer to the official datasheet from Texas Instruments.
Manufacturer
The SN74ACT245DW is manufactured by Texas Instruments (TI). Texas Instruments is an American technology company headquartered in Dallas, Texas. It specializes in designing and manufacturing semiconductors and various integrated circuits, which are used in electronic devices globally. TI is known for its analog and embedded processing products and is one of the top semiconductor companies in the world.
Application
The SN74ACT245DW is an octal bus transceiver designed for asynchronous two-way communication between data buses. It is commonly used in applications requiring bidirectional data transfer with isolation, such as microcontroller interfacing, memory address/data multiplexing, and peripheral expansion. Its features include high-speed operation, low power consumption, and the ability to drive capacitive loads, making it suitable for use in digital systems, communication equipment, and industrial automation. Additionally, the device's tri-state outputs allow for easy bus management, enabling multiple transceivers to be connected to the same bus, facilitating efficient data exchange in complex systems.
Package
The SN74ACT245DW is a part of Texas Instruments' SN74ACT245 series and comes in a SOIC (Small Outline Integrated Circuit) package. The "DW" suffix indicates a specific SOIC package with 20 pins. This package type is surface-mount and is commonly used for digital logic integrated circuits.
