仕様
| 属性 | 値 |
| Package | Tube |
| Series | 74HC |
| ProductStatus | Active |
| LogicType | Transceiver, Non-Inverting |
| NumberofElements | 1 |
| NumberofBitsperElement | 8 |
| OutputType | 3-State |
| Current-OutputHighLow | 7.8mA, 7.8mA |
| Voltage-Supply | 2V ~ 6V |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 20-TSSOP (0.173, 4.40mm Width) |
概要
Description
The SN74HC245PW is a high-speed CMOS device manufactured by Texas Instruments. It is an octal bus transceiver with 3-state outputs, meaning it can transfer data between two separate buses. The device features an output enable pin and a direction control pin that allow for bidirectional data flow; it can either send or receive data depending on the configuration.
The SN74HC245PW operates over a wide voltage range from 2V to 6V, making it suitable for a variety of applications. It is known for low power consumption and high noise immunity, thanks to its CMOS technology. The device can drive up to 15 LSTTL loads and has symmetrical drive characteristics.
Housed in a TSSOP-20 package, the SN74HC245PW is compact, which is beneficial for space-constrained designs. It is commonly used in applications like digital signal processing, memory interfacing, and data communication systems where efficient data transfer is crucial. The device's robust design ensures reliability across different operating conditions, adhering to industry standards for performance and quality.
The SN74HC245PW operates over a wide voltage range from 2V to 6V, making it suitable for a variety of applications. It is known for low power consumption and high noise immunity, thanks to its CMOS technology. The device can drive up to 15 LSTTL loads and has symmetrical drive characteristics.
Housed in a TSSOP-20 package, the SN74HC245PW is compact, which is beneficial for space-constrained designs. It is commonly used in applications like digital signal processing, memory interfacing, and data communication systems where efficient data transfer is crucial. The device's robust design ensures reliability across different operating conditions, adhering to industry standards for performance and quality.
Equivalent
The SN74HC245PW is an octal bus transceiver with 3-state outputs. Equivalent products include:
1. NXP 74HC245PW
2. ON Semiconductor MC74HC245ADW
3. Diodes Incorporated 74HC245D
4. Microchip Technology TC74HC245A
5. STMicroelectronics M74HC245
These alternatives offer similar functionality and pin configurations, though it’s essential to verify specific electrical characteristics and package types for compatibility with your application.
1. NXP 74HC245PW
2. ON Semiconductor MC74HC245ADW
3. Diodes Incorporated 74HC245D
4. Microchip Technology TC74HC245A
5. STMicroelectronics M74HC245
These alternatives offer similar functionality and pin configurations, though it’s essential to verify specific electrical characteristics and package types for compatibility with your application.
Features
The SN74HC245PW is an octal bus transceiver with 3-state outputs, designed for asynchronous two-way communication between data buses. Key features include:
1. High-Speed CMOS Logic: Operates within a wide voltage range from 2V to 6V.
2. Bi-directional Data Flow: Allows data transmission in both directions, controlled by the direction (DIR) pin.
3. 3-State Outputs: Features output enable (OE) pin to disable the outputs, making them high-impedance, which is useful for bus-oriented systems.
4. Low Power Consumption: Offers low power dissipation due to CMOS technology.
5. Noise Margin: Provides high noise immunity with typical noise margin of 1.2V at 5V.
6. High Drive Capability: Can source or sink up to 6mA outputs.
7. Package Options: Available in TSSOP (PW) package.
8. Wide Application: Suitable for memory-address driving, clock drivers, and data transmission between different voltage nodes.
This device is ideal for applications that require data buffering and isolation, particularly in complex digital systems.
1. High-Speed CMOS Logic: Operates within a wide voltage range from 2V to 6V.
2. Bi-directional Data Flow: Allows data transmission in both directions, controlled by the direction (DIR) pin.
3. 3-State Outputs: Features output enable (OE) pin to disable the outputs, making them high-impedance, which is useful for bus-oriented systems.
4. Low Power Consumption: Offers low power dissipation due to CMOS technology.
5. Noise Margin: Provides high noise immunity with typical noise margin of 1.2V at 5V.
6. High Drive Capability: Can source or sink up to 6mA outputs.
7. Package Options: Available in TSSOP (PW) package.
8. Wide Application: Suitable for memory-address driving, clock drivers, and data transmission between different voltage nodes.
This device is ideal for applications that require data buffering and isolation, particularly in complex digital systems.
Pinout
The SN74HC245PW is a 20-pin IC that functions as an octal bus transceiver with 3-state outputs. It is primarily used for asynchronous two-way communication over two data buses. The device allows data transmission in either direction, controlled by two main signals: the direction pin (DIR) and the output enable pin (OE).
Pin Count: 20
Function:
- Pins 2-9 (A1-A8): Data bus A
- Pins 11-18 (B1-B8): Data bus B
- Pin 1 (OE): Output enable. When low, the transceiver is enabled; when high, all outputs are in a high-impedance state.
- Pin 19 (DIR): Direction control. Determines the direction of data transmission; data flows from bus A to bus B when high, and from bus B to bus A when low.
- Pin 10 (GND): Ground
- Pin 20 (VCC): Supply voltage
This configuration makes the SN74HC245PW suitable for applications requiring bidirectional data flow, like memory interfacing and microprocessor systems.
Pin Count: 20
Function:
- Pins 2-9 (A1-A8): Data bus A
- Pins 11-18 (B1-B8): Data bus B
- Pin 1 (OE): Output enable. When low, the transceiver is enabled; when high, all outputs are in a high-impedance state.
- Pin 19 (DIR): Direction control. Determines the direction of data transmission; data flows from bus A to bus B when high, and from bus B to bus A when low.
- Pin 10 (GND): Ground
- Pin 20 (VCC): Supply voltage
This configuration makes the SN74HC245PW suitable for applications requiring bidirectional data flow, like memory interfacing and microprocessor systems.
Manufacturer
The SN74HC245PW is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of analog and embedded processing chips. Founded in 1930 and headquartered in Dallas, Texas, TI is known for its innovation and development in the electronics industry. The company’s products are used in various applications, including industrial, automotive, personal electronics, and communications equipment. TI is one of the largest semiconductor companies in the world and is recognized for its commitment to technology advancements and operational efficiency.
Application
The SN74HC245PW is an octal bus transceiver designed for bi-directional data communication between buses. It is commonly used in applications like microprocessor or memory interfacing, data buffering, and bus isolation. Its three-state outputs and high-speed CMOS technology make it suitable for use in digital systems where low power consumption and high speed are essential. Additionally, it can be used in level-shifting applications and is ideal for systems requiring bidirectional data flow with controlled direction and isolation. The device is also useful in signal multiplexing and demultiplexing in various electronic devices and communication systems.
Package
The SN74HC245PW is a part of Texas Instruments' HC family of high-speed CMOS logic ICs. The "PW" in the part number indicates that the device is in a TSSOP (Thin Shrink Small Outline Package) with 20 pins. This type of package is designed for space-efficient applications.
