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74HCT245PW
+BOMBus Transceivers
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제조업체Nexperia
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제조업체 부품 #74HCT245PW
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재고22436
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사양
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개요
Description
Key features include:
- Bidirectional Data Flow: It facilitates data transfers in both directions between buses.
- 3-State Outputs: This feature allows the outputs to be in one of three states: high, low, or high-impedance, enabling multiple devices to connect to the same bus without interference.
- TTL Compatibility: It is compatible with TTL logic levels, making it suitable for interfacing with TTL devices.
- Enable and Direction Pins: The 'G' (Output Enable) pin controls the output state, while the 'DIR' (Direction) pin determines the direction of data flow.
The 74HCT245PW is often used in computing and digital communication systems where efficient data management and transfer between different parts of a system are required.
Equivalent
1. SN74HCT245N from Texas Instruments
2. MC74HCT245ADWG from ON Semiconductor
3. CD74HCT245E from Texas Instruments
4. TC74HCT245AP from Toshiba
Ensure that the chosen equivalent meets the necessary specifications and pin configuration for your specific application.
Features
1. Bus Transceiver Functionality: It facilitates bidirectional data transfer between two buses, allowing for data flow in both directions.
2. 3-State Outputs: The outputs can be in one of three states—high, low, or high-impedance—enabling multiple devices to share the same output lines without interference.
3. TTL Compatible Inputs: Designed to interface directly with TTL devices, it supports easy integration into mixed-signal environments.
4. High-Speed Operation: Provides fast data processing, suitable for applications requiring rapid data throughput.
5. Low Power Consumption: Efficient power usage makes it suitable for battery-powered and energy-sensitive applications.
6. Wide Operating Voltage Range: Typically operates within a voltage range of 4.5V to 5.5V.
These features make the 74HCT245PW suitable for a variety of digital systems, particularly those involving complex data routing and bus management.
Pinout
This IC comes in a 20-pin package. The key pin functions are as follows:
- Pins 2-9 (A0-A7): Data inputs/outputs for one side of the bus.
- Pins 11-18 (B0-B7): Data inputs/outputs for the other side of the bus.
- Pin 1 (DIR): Direction control pin. It determines the data flow direction from A to B or B to A.
- Pin 19 (OE̅): Output enable pin. Active low; it enables the outputs when LOW.
- Pin 10 (GND): Ground connection.
- Pin 20 (VCC): Supply voltage.
This IC facilitates bidirectional data transmission, controlled by the direction and output enable pins, making it suitable for interfacing different parts of a digital system.
Manufacturer
Application
1. Microprocessor and Microcontroller Interfaces: Facilitates bidirectional data communication between the CPU and peripheral devices.
2. Memory Systems: Provides isolation and direction control for data buses, allowing memory devices to communicate efficiently.
3. Signal Buffering: Enhances signal integrity by buffering data lines in communication paths.
4. Address/Data Multiplexing: Allows the sharing of address and data lines in complex digital circuits.
5. Level Shifting: Converts between different TTL and CMOS logic levels in mixed-signal environments.
Its ability to drive capacitive loads makes it suitable for high-speed data transfer in computing and communication systems.