What is the Additional Feature ?

Name: SN74LS244NS
Brand: Texas Instruments
SKU: SN74LS244NS
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 SN74LS244NS

Part No.:: SN74LS244NS

Manufacturer:: Texas Instruments

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

Datasheet:: SN74LS244NS.pdf

Description:: IC BUFFER NON-INVERT 5.25V 20SO

In Stock:: 934

Quantity:: Add To Cart

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SN74LS244NS Specifications

Package/Case:
20-SOIC (0.209, 5.30mm Width)
Packaging:
Tube
Series:
74LS
ProductStatus:
Active
LogicType:
Buffer, Non-Inverting
NumberofElements:
2
NumberofBitsperElement:
4
InputType:
-
OutputType:
3-State
Current-OutputHighLow:
15mA, 24mA
Voltage-Supply:
4.75V ~ 5.25V
OperatingTemperature:
0°C ~ 70°C (TA)
MountingType:
Surface Mount

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SN74LS244NS information

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SN74LS244NS Typical application Circuitry

SN74LS244NS

An integrated circuit with three-state outputs that functions as an octal buffer/line driver is the SN74LS244NS. This chip is designed to improve the drive capabilities of a bus without adding more load to the bus. Let's examine its features, possible uses, important specifications, and a thorough illustration of how it works in a circuit.

Scenarios for functionality and applications:

1. Signaling and buffering: In digital circuits, the SN74LS244NS is frequently used for driving and buffering signals. It can isolate the input from the output, providing a means to strengthen weak signals or to prevent a high-power signal from damaging other components in the circuit.

2. Bus Management: In systems where multiple devices share a common data bus, the SN74LS244NS can be used to control which device is allowed to transmit data at any given time. This is crucial in preventing data collision and ensuring smooth data transmission.

Key Parameters:

- Supply Voltage: Typically operates at 5V.

- Current Driving Capability: Can drive a significant amount of current, making it suitable for powering devices that require more power than what a standard logic gate can provide.

- 3-State Outputs: This feature allows the outputs to be set in high, low, or high-impedance states, which is essential for bus applications.

Example of a Circuit: Bus Interface Circuit:

Let's look at an example of a bus interface circuit using the SN74LS244NS.

1. Connection to the Bus: Suppose we are using it to drive a 8-bit data bus. Each of the eight outputs of the SN74LS244NS (pins 18 to 25) will be connected to one line of the data bus.

2. Input Signals: The inputs (pins 2 to 9) will be connected to the source of the data, which could be another set of logic gates, a microprocessor, or any digital output.

3. Output Enable (OE) Pins: The OE pins (pin 1 and pin 19 for SN74LS244NS) control whether the outputs are in a high-impedance state or actively driving the bus. These are crucial for bus management and need to be connected to the control logic, which determines when the chip should be active.

4. Power Supply: The Vcc (pin 20) and Ground (pin 10) should be connected to the power supply, typically 5V and ground, respectively.

Design Considerations:

When designing circuits with the SN74LS244NS, consider the following:

- Power Supply Requirements: Ensure that the supply voltage is within the recommended range.

- Loading and Fan-out: Calculate the load that the outputs will drive and ensure it's within the chip's capability.

- Signal Integrity: Pay close attention to the arrangement, particularly in high-speed applications, to reduce noise and guarantee signal integrity.

- Thermal Management: If the chip is driving heavy loads, consider heat dissipation solutions.

In conclusion, the SN74LS244NS is a versatile component used in various digital circuits, especially for driving and managing data buses. Its ability to provide high current output and its 3-state output functionality make it an essential part of many digital systems.

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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 SN74LS244NS.

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

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(1)Inform us within 90 days

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