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Name: SN74HC245N
Brand: Texas Instruments
SKU: SN74HC245N
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments SN74HC245N

Part No.:: SN74HC245N

Manufacturer:: Texas Instruments

Package:: 20-DIP (0.300, 7.62mm)

Datasheet:: SN74HC245N.pdf

Description:: IC TXRX NON-INVERT 6V 20DIP

In Stock:: 6031

Quantity:: Add To Cart

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SN74HC245N Specifications

Package/Case:
20-DIP (0.300, 7.62mm)
Packaging:
Tube
Series:
74HC
ProductStatus:
Active
LogicType:
Transceiver, Non-Inverting
NumberofElements:
1
NumberofBitsperElement:
8
InputType:
-
OutputType:
3-State
Current-OutputHighLow:
7.8mA, 7.8mA
Voltage-Supply:
2V ~ 6V
OperatingTemperature:
-40°C ~ 85°C (TA)
MountingType:
Through Hole

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SN74HC245N information

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SN74HC245N Typical application Circuitry

SN74HC245N

The SN74HC245N is a chip with bidirectional octal bus transceivers. It is commonly used for level shifting and signal buffering in digital circuits. The chip has several application scenarios, including interfacing between different voltage domains, data bus buffering, and more.

Key Parameters and Features:

- Voltage Compatibility: The SN74HC245N is compatible with both 3.3V and 5V voltage levels.

- Bidirectional: It can transfer data bidirectionally, meaning it can transmit data from A to B and vice versa.

- Eight Channels: The chip has eight data channels, making it suitable for parallel data transmission.

- High-Speed: It operates at high-speed, making it suitable for applications where data needs to be transferred quickly.

Now, let's discuss a specific application scenario for the SN74HC245N chip, which is interfacing between a 3.3V microcontroller and a 5V device, like an EEPROM memory chip.

Circuit Connection Details:

1. Microcontroller (3.3V Side):

- Connect the microcontroller's data pins (e.g., D0-D7) to the A-side of the SN74HC245N.

- Connect the microcontroller's voltage supply (3.3V) to the VCCA pin of the SN74HC245N.

- Connect the microcontroller's ground (GND) to the GND pin of the SN74HC245N.

2. EEPROM (5V Side):

- Connect the EEPROM's data pins (e.g., D0-D7) to the B-side of the SN74HC245N.

- Connect the EEPROM's voltage supply (5V) to the VCCB pin of the SN74HC245N.

- Connect the EEPROM's ground (GND) to the GND pin of the SN74HC245N.

3. Direction Control (DIR pin):

- Connect the DIR pin of the SN74HC245N to a microcontroller GPIO pin. This pin controls the direction of data transfer.

- When DIR is HIGH, data is transferred from A to B (microcontroller to EEPROM).

- When DIR is LOW, data is transferred from B to A (EEPROM to microcontroller).

4. Output Enable (OE pin):

- Connect the OE pin of the SN74HC245N to another microcontroller GPIO pin. This pin enables or disables the output.

- When OE is LOW, the outputs are active.

- When OE is HIGH, the outputs are disabled (high-impedance state).

Considerations for Circuit Design:

- Voltage Compatibility: Ensure that the 3.3V and 5V voltage levels are within the specified operating range of the SN74HC245N.

- Direction Control: Properly control the DIR pin to set the data transfer direction as needed.

- Output Enable: Use the OE pin to enable or disable the outputs when required.

- Signal Integrity: Pay attention to signal integrity, especially if the data lines are long. Proper termination and noise mitigation may be necessary.

In summary, the SN74HC245N is a versatile chip used for bidirectional data transfer between different voltage domains. When designing a circuit with this chip, it's crucial to consider voltage compatibility, direction control, output enable, and signal integrity to ensure reliable data transfer between devices.

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6. What is the process for return or replacement of SN74HC245N?

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of SN74HC245N.

(3)The PartNo is unused and only in the original unpacked packaging.

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(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations