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SN74LS245DWR
IC TXRX NON-INVERT 5.25V 20SOIC
- 製造商
- 製造商。 部分 #SN74LS245DWR
- 包 20-SOIC (0.295, 7.50mm Width)
- 資料表 SN74LS245DWR DataSheet
- 有現貨的6371
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規格
| 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) |
概述
Description
The SN74LS245DWR is an octal bus transceiver developed by Texas Instruments, designed for high-speed data communication between two buses. It features bidirectional data transfer, allowing 8 bits of data to be transmitted in both directions, making it ideal for multiplexing applications.
Key specifications include:
- Voltage Supply: Operates typically at 5V, compatible with low-power TTL logic levels.
- Data Direction Control: Utilizes a direction control pin (DIR) to manage data flow, ensuring efficient operation.
- Enable/Disable Function: An active-low enable (OE) pin allows control over the transceiver, enabling or disabling data transmission for added flexibility.
- High-Speed Operation: With a propagation delay of approximately 10 ns, it's suitable for high-speed applications.
The device is packaged in a 20-pin Dual In-Line Package (DIP), making it easy to integrate into various electronic designs, such as computer systems, communication devices, and peripheral interfaces. Overall, the SN74LS245DWR is a versatile component in digital electronics and bus systems.
Key specifications include:
- Voltage Supply: Operates typically at 5V, compatible with low-power TTL logic levels.
- Data Direction Control: Utilizes a direction control pin (DIR) to manage data flow, ensuring efficient operation.
- Enable/Disable Function: An active-low enable (OE) pin allows control over the transceiver, enabling or disabling data transmission for added flexibility.
- High-Speed Operation: With a propagation delay of approximately 10 ns, it's suitable for high-speed applications.
The device is packaged in a 20-pin Dual In-Line Package (DIP), making it easy to integrate into various electronic designs, such as computer systems, communication devices, and peripheral interfaces. Overall, the SN74LS245DWR is a versatile component in digital electronics and bus systems.
Features
The SN74LS245DWR is a high-speed, dual transceiver designed for asynchronous communication between data buses. Key features include:
1. Dual Transceiver: Supports both data transmission and reception, facilitating bidirectional data flow.
2. High Speed: Operates at a maximum data rate of 12 Mbps, suitable for fast communication applications.
3. Voltage Levels: Compatible with standard TTL logic levels, ensuring easy integration with various digital circuits.
4. Control Signals: Features direction control (DIR) and enable (OE) pins, allowing for flexible operation and control of data flow.
5. Low Power Consumption: Designed to minimize power usage, making it suitable for battery-operated devices.
6. Wide Supply Voltage: Operates within a supply range of 4.75V to 5.25V, accommodating various power supply configurations.
7. Temperature Range: Reliable performance across a temperature range of 0°C to 70°C.
8. Package Type: Available in a 20-pin dual in-line package (DIP) and surface mount options, facilitating diverse application layouts.
These features make the SN74LS245DWR suitable for data bus applications in digital systems.
1. Dual Transceiver: Supports both data transmission and reception, facilitating bidirectional data flow.
2. High Speed: Operates at a maximum data rate of 12 Mbps, suitable for fast communication applications.
3. Voltage Levels: Compatible with standard TTL logic levels, ensuring easy integration with various digital circuits.
4. Control Signals: Features direction control (DIR) and enable (OE) pins, allowing for flexible operation and control of data flow.
5. Low Power Consumption: Designed to minimize power usage, making it suitable for battery-operated devices.
6. Wide Supply Voltage: Operates within a supply range of 4.75V to 5.25V, accommodating various power supply configurations.
7. Temperature Range: Reliable performance across a temperature range of 0°C to 70°C.
8. Package Type: Available in a 20-pin dual in-line package (DIP) and surface mount options, facilitating diverse application layouts.
These features make the SN74LS245DWR suitable for data bus applications in digital systems.
Package
The SN74LS245DWR is packaged in a 20-pin Dual In-Line Package (DIP) form factor. It features a wide body design suitable for through-hole mounting on printed circuit boards.
Pinout
The SN74LS245DWR is an octal bus transceiver with three-state outputs. It features a 20-pin dual in-line package (DIP) configuration.
### Pin Count:
- Total Pins: 20
### Functions:
- Data Inputs/Outputs:
- D0 to D7 (pins 2-9): These pins are used for data input or output.
- A0 to A7 (pins 19, 18, 17, 16, 15, 14, 13, 12): These pins serve as the secondary set of data inputs/outputs.
- Control Pins:
- DIR (pin 1): Determines the direction of data flow (from A to B or B to A).
- EN (pin 10): Enables the transceiver when high; when low, outputs are in a high-impedance state.
- Ground and Power:
- VCC (pin 20): Connects to the positive power supply (+5V).
- GND (pin 11): Connects to ground.
The SN74LS245 is commonly used in applications requiring data transfer between different buses.
### Pin Count:
- Total Pins: 20
### Functions:
- Data Inputs/Outputs:
- D0 to D7 (pins 2-9): These pins are used for data input or output.
- A0 to A7 (pins 19, 18, 17, 16, 15, 14, 13, 12): These pins serve as the secondary set of data inputs/outputs.
- Control Pins:
- DIR (pin 1): Determines the direction of data flow (from A to B or B to A).
- EN (pin 10): Enables the transceiver when high; when low, outputs are in a high-impedance state.
- Ground and Power:
- VCC (pin 20): Connects to the positive power supply (+5V).
- GND (pin 11): Connects to ground.
The SN74LS245 is commonly used in applications requiring data transfer between different buses.
Manufacturer
The manufacturer of the SN74LS245DWR is Texas Instruments (TI). Texas Instruments is a global semiconductor design and manufacturing company, known for its development of analog and embedded processing technologies. Founded in 1930, TI has a broad portfolio that includes microcontrollers, processors, and a variety of integrated circuits (ICs) used in consumer electronics, automotive systems, industrial equipment, and telecommunications. The SN74LS245DWR is a specific type of octal bus transceiver that is part of TI's 74LS (Low Power Schottky) series of logic devices, widely used in digital circuits for data transmission and interfacing. TI is recognized for its innovation and leadership in the semiconductor industry, contributing significantly to advancements in electronic systems.
Application
The SN74LS245DWR is a dual transceiver used for high-speed data transmission in digital circuits. Its primary application areas include data bus buffering, bidirectional communication between microcontrollers and peripheral devices, and interfacing between different logic families. It is commonly utilized in computer systems, telecommunications, and industrial automation for efficient data handling and signal integrity in parallel data paths.
Equivalent
The SN74LS245DWR is a dual-direction bus transceiver. Equivalent products include the SN74HC245, SN74HCT245, and 74LS245. Other compatible options are the 74LV245 and 74LVC245, which also provide similar functionalities with varying voltage levels and speed ratings. Always check for specific electrical characteristics and pin configurations when selecting alternatives.
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