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74HC245
+BOMIC 74HC245 Octal Tri-State Trans
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Nhà sản xuấtJameco Electronics
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Ông. Phần #74HC245
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Có sẵn5089
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Thông số kỹ thuật
| thuộc tính | Giá trị |
| Series | 74HC |
| Part Status | Active |
| Mounting Type | Through Hole |
Tổng quan
Description
The 74HC245 is particularly useful in applications where data needs to be isolated from the main bus, providing buffering to improve signal integrity. Its low propagation delay and high noise immunity make it suitable for high-speed digital applications. The IC is housed in various packages, including DIP and SOIC, making it easy to integrate into different circuit designs. Overall, the 74HC245 is a versatile component essential for efficient data transfer in electronic systems.
Equivalent
Features
1. Dual Direction Data Flow: Supports bidirectional data transmission, allowing data to flow from A to B or B to A.
2. 3-State Outputs: Outputs can be enabled or disabled, allowing multiple devices to share the same bus without interference.
3. High-Speed Operation: Typically operates at speeds up to 25 MHz, suitable for fast data processing applications.
4. Wide Voltage Range: Compatible with a power supply range of 2V to 6V, making it versatile for various logic levels.
5. Low Power Consumption: Operates with low power, ideal for battery-operated devices.
6. TTL Compatible: The device is compatible with TTL logic levels, ensuring easy integration into existing systems.
7. Input/Output Isolation: Provides isolation between data buses, protecting against signal degradation.
Overall, the 74HC245 is widely used in applications such as microcontroller interfacing, data buffering, and signal routing.
Pinout
Pin Count and Functions:
1. A1-A8 (Pins 2-9): Data input/output pins for transmitting data from the A bus.
2. B1-B8 (Pins 12-19): Data input/output pins for transmitting data from the B bus.
3. DIR (Pin 1): Direction control pin; when high, data is transferred from A to B, and when low, from B to A.
4. OE (Pin 10): Output Enable; when low, outputs are enabled, and when high, outputs are in high-impedance state (3-state).
5. Vcc (Pin 20): Power supply pin (typically +2V to +6V).
6. GND (Pin 11): Ground pin.
The device allows for efficient data transfer between buses and is commonly used in applications requiring data buffering and communication between different parts of a circuit.
Manufacturer
TI primarily serves markets such as automotive, industrial, communications, and consumer electronics. Founded in 1930, the company has established itself as a leader in the semiconductor industry, focusing on innovation and high-performance solutions. Other manufacturers of the 74HC245 include Nexperia, ON Semiconductor, and Fairchild Semiconductor, which also specialize in various electronic components and integrated circuits. These companies typically operate in the broader semiconductor sector, providing components needed for various electronic applications across multiple industries.
Application
1. Data Buffering: It buffers data between two buses, enhancing signal integrity.
2. Bus Switching: It facilitates bidirectional data flow, allowing communication between different parts of a system.
3. Microprocessor Interfaces: Often used to interface microcontrollers or microprocessors with peripherals, enabling data exchange.
4. Memory Expansion: Helps expand data paths in systems requiring additional memory or I/O devices.
5. Level Shifting: Assists in compatibility between different voltage levels in mixed-voltage systems.
These applications make it essential for efficient data management in digital systems.