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Name: SN74HC245NS
Brand: Texas Instruments
SKU: SN74HC245NS
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 SN74HC245NS

Part No.:: SN74HC245NS

Manufacturer:: Texas Instruments

Package:: 20-SOIC (0.209, 5.30mm Width)

Datasheet:: SN74HC245NS.pdf

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

In Stock:: 1026

Quantity:: Add To Cart

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SN74HC245NS Specifications

Package/Case:
20-SOIC (0.209, 5.30mm Width)
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:
Surface Mount

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SN74HC245NS information

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SN74HC245NS Typical application Circuitry

SN74HC245NS

An octal bus transceiver integrated circuit (IC) with 3-state outputs is the SN74HC245NS. It is frequently utilized to allow two buses to translate voltage levels in both directions. Below, I will provide a detailed explanation of its functionality, typical applications, key parameters, and a specific circuit connection. Additionally, I will include at least four keywords related to SN74HC245NS in English.

Functionality:

The SN74HC245NS is designed to facilitate data transfer between two buses with potentially different voltage levels. It can operate in two modes: data input (A to B) and data output (B to A). When in the data input mode, it allows data to flow from Bus A to Bus B, and in the data output mode, it enables data transfer from Bus B to Bus A. It also features 3-state outputs, which means that the outputs can be put in a high-impedance state when not actively driving the bus, allowing multiple transceivers to be connected to the same bus without interference.

Typical Applications:

1. Level Shifting: SN74HC245NS is often used to shift the voltage levels between microcontrollers and peripherals operating at different voltage levels, ensuring compatibility.

2. Bus Buffering: It serves as a buffer between an internal bus and an external bus, allowing for controlled data transfer.

3. Bi-directional Data Transfer: The chip is suitable for bidirectional communication between devices on two different buses.

Key Parameters:

- Supply Voltage (VCC): Typically operates at 5V, but it is compatible with a range of voltages.

- Number of Channels: It has 8 channels for bidirectional data transfer.

- Propagation Delay: The time it takes for data to travel from the input to the output.

- Output Drive Capability: The maximum current it can source or sink.

- 3-State Outputs: Ability to disable the outputs to prevent bus contention.

Circuit Connection:

Let's consider a circuit where SN74HC245NS is used to perform level shifting between a 3.3V microcontroller (MCU) and a 5V peripheral device, such as an LCD screen.

Circuit Details:

- MCU Side (3.3V) Connections:

- Connect MCU's Data Out (3.3V) to SN74HC245NS A1 (Input A1).

- Connect MCU's Data In (3.3V) to SN74HC245NS B1 (Output B1).

- Connect MCU's GND to SN74HC245NS GND.

- Peripheral Side (5V) Connections:

- Connect Peripheral's Data Out (5V) to SN74HC245NS B2 (Input B2).

- Connect Peripheral's Data In (5V) to SN74HC245NS A2 (Output A2).

- Connect Peripheral's GND to SN74HC245NS GND.

- Control Pins:

- Connect the appropriate control pin (OE, Output Enable) to enable/disable the data transfer as needed.

Design Considerations:

1. Voltage Compatibility: Ensure that the supply voltage levels of both the MCU and peripheral are within the operating range of SN74HC245NS.

2. Propagation Delay: Consider the propagation delay when designing real-time systems to avoid timing issues.

3. Output Enable (OE) Control: Properly control the OE pin to enable or disable data transfer when required.

4. Current Limiting: Be mindful of the output drive capability and ensure that it can source/sink enough current for your application.

In summary, the SN74HC245NS is a versatile IC used for bidirectional voltage-level translation in various applications, with careful attention to voltage levels, control signals, and timing considerations in the circuit design.

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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 SN74HC245NS.

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