規格
| 屬性 | 價值 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | 74LV |
| 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 | 16mA, 16mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount |
概述
Description
The SN74LV245ATPWR is an 8-bit bidirectional voltage-level shifter and bus transceiver with three-state outputs, manufactured by Texas Instruments. Part of the LV family, it operates within a voltage range of 2V to 5.5V, making it suitable for various power supply conditions. The device is designed for asynchronous communication between data buses and can be used in applications that require low power consumption and high-speed operation.
Key features include direction control (DIR) and output enable (OE) pins, which facilitate data flow management by determining the direction of data transmission and enabling or disabling the outputs. The device is typically housed in a TSSOP (Thin Shrink Small Outline Package) for space-efficient circuit designs.
Ideal for use in mixed-voltage systems, the SN74LV245ATPWR ensures compatibility between different logic levels while maintaining signal integrity. It's commonly used in computing and communication systems, where efficient and reliable data transfer is critical.
Key features include direction control (DIR) and output enable (OE) pins, which facilitate data flow management by determining the direction of data transmission and enabling or disabling the outputs. The device is typically housed in a TSSOP (Thin Shrink Small Outline Package) for space-efficient circuit designs.
Ideal for use in mixed-voltage systems, the SN74LV245ATPWR ensures compatibility between different logic levels while maintaining signal integrity. It's commonly used in computing and communication systems, where efficient and reliable data transfer is critical.
Equivalent
The SN74LV245ATPWR is a Texas Instruments octal bus transceiver with 3-state outputs. Equivalent products could include:
1. 74HC245 - A similar octal bus transceiver from NXP or other manufacturers.
2. 74LV245 - From manufacturers like ON Semiconductor or STMicroelectronics.
3. SN74AHC245 - Another Texas Instruments variant with slightly different characteristics.
Ensure the selected equivalent matches key specifications such as logic family, voltage range, and speed.
1. 74HC245 - A similar octal bus transceiver from NXP or other manufacturers.
2. 74LV245 - From manufacturers like ON Semiconductor or STMicroelectronics.
3. SN74AHC245 - Another Texas Instruments variant with slightly different characteristics.
Ensure the selected equivalent matches key specifications such as logic family, voltage range, and speed.
Features
The SN74LV245ATPWR is an octal bus transceiver with 3-state outputs, designed for asynchronous two-way communication between data buses. Key features include:
1. Voltage Range: Operates over a wide voltage range from 2 V to 5.5 V.
2. High Drive Capability: Capable of sourcing or sinking up to 24 mA at 3.3 V, making it suitable for driving heavy loads.
3. Low Power Consumption: Has a typical quiescent current of 10 µA, making it energy-efficient.
4. 3-State Outputs: Features output-enable functionality to allow for connection to multiple systems on a shared bus.
5. Bidirectional Data Transfer: Allows for data flow in both directions, controlled by the direction control pin.
6. Latch-up Performance: Exhibits excellent latch-up immunity, exceeding 100 mA per JESD 78, Class II.
7. Enhanced ESD Protection: Offers robust ESD protection exceeding 2000 V per the Human Body Model (HBM).
8. Package: Available in a TSSOP (Thin Shrink Small Outline Package) for compact size and space efficiency.
9. Temperature Range: Suitable for industrial applications, operating from -40°C to 125°C.
These features make it ideal for applications requiring efficient bus interfacing and low power consumption.
1. Voltage Range: Operates over a wide voltage range from 2 V to 5.5 V.
2. High Drive Capability: Capable of sourcing or sinking up to 24 mA at 3.3 V, making it suitable for driving heavy loads.
3. Low Power Consumption: Has a typical quiescent current of 10 µA, making it energy-efficient.
4. 3-State Outputs: Features output-enable functionality to allow for connection to multiple systems on a shared bus.
5. Bidirectional Data Transfer: Allows for data flow in both directions, controlled by the direction control pin.
6. Latch-up Performance: Exhibits excellent latch-up immunity, exceeding 100 mA per JESD 78, Class II.
7. Enhanced ESD Protection: Offers robust ESD protection exceeding 2000 V per the Human Body Model (HBM).
8. Package: Available in a TSSOP (Thin Shrink Small Outline Package) for compact size and space efficiency.
9. Temperature Range: Suitable for industrial applications, operating from -40°C to 125°C.
These features make it ideal for applications requiring efficient bus interfacing and low power consumption.
Pinout
The SN74LV245ATPWR is an octal bus transceiver with 3-state outputs, commonly used for asynchronous communication between data buses. It has a total of 20 pins. The main function of this IC is to allow data transmission from one bus to another, effectively isolating the two buses, while also capable of driving capacitive loads and offering high drive capability.
Key Pins and Their Functions:
- Pins 2-9 (A1-A8): Data inputs/outputs for Bus A.
- Pins 11-18 (B1-B8): Data inputs/outputs for Bus B.
- Pin 1 (DIR): Direction control pin. Determines the direction of data flow. When DIR is high, data flows from Bus A to Bus B. When DIR is low, data flows from Bus B to Bus A.
- Pin 19 (OE): Output enable pin. Active low; when low, the transceiver is enabled, and data is transferred based on DIR. When high, the outputs are in a high-impedance state.
- Pins 10 & 20: VCC and GND, respectively, for power supply.
This IC is employed in level-shifting applications and systems that require bidirectional data flow with isolation.
Key Pins and Their Functions:
- Pins 2-9 (A1-A8): Data inputs/outputs for Bus A.
- Pins 11-18 (B1-B8): Data inputs/outputs for Bus B.
- Pin 1 (DIR): Direction control pin. Determines the direction of data flow. When DIR is high, data flows from Bus A to Bus B. When DIR is low, data flows from Bus B to Bus A.
- Pin 19 (OE): Output enable pin. Active low; when low, the transceiver is enabled, and data is transferred based on DIR. When high, the outputs are in a high-impedance state.
- Pins 10 & 20: VCC and GND, respectively, for power supply.
This IC is employed in level-shifting applications and systems that require bidirectional data flow with isolation.
Manufacturer
The SN74LV245ATPWR is manufactured by Texas Instruments Incorporated (TI). Texas Instruments is an American technology company primarily known for its development and commercialization of semiconductors and integrated circuits, which are used in a wide range of electronic devices. TI is one of the largest semiconductor companies in the world and is a leader in the design and production of analog chips and embedded processors. Their products serve various industries, including automotive, industrial, personal electronics, communications, and enterprise systems. The company’s focus is on creating technologies that support innovation and efficiency in electronic systems, enabling advancements across multiple sectors.
Application
The SN74LV245ATPWR is an octal bus transceiver with 3-state outputs, commonly used in digital circuits for bidirectional data transmission between buses. Key application areas include:
1. Microcontroller and Microprocessor Interfaces: Facilitates data transfer between processors and peripheral devices.
2. Memory Modules: Used in memory interfacing for data buffering and isolation.
3. Communication Systems: Assists in data routing and buffering in communication interfaces.
4. Instrumentation: Helps in data acquisition systems to manage multiple data lines.
5. Embedded Systems: Enables efficient data handling in compact and complex systems.
Its capability to provide direction control and 3-state output makes it versatile for various digital signal management tasks.
1. Microcontroller and Microprocessor Interfaces: Facilitates data transfer between processors and peripheral devices.
2. Memory Modules: Used in memory interfacing for data buffering and isolation.
3. Communication Systems: Assists in data routing and buffering in communication interfaces.
4. Instrumentation: Helps in data acquisition systems to manage multiple data lines.
5. Embedded Systems: Enables efficient data handling in compact and complex systems.
Its capability to provide direction control and 3-state output makes it versatile for various digital signal management tasks.
Package
The SN74LV245ATPWR is a Texas Instruments octal bus transceiver with 3-state outputs. It comes in a TSSOP (Thin Shrink Small Outline Package) with 20 pins, providing a compact and efficient layout for surface-mount technology applications.
