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Name: SN74HC573APWR
Brand: Texas Instruments
SKU: SN74HC573APWR
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 SN74HC573APWR

Part No.:: SN74HC573APWR

Manufacturer:: Texas Instruments

Package:: 20-TSSOP (0.173, 4.40mm Width)

Datasheet:: SN74HC573APWR.pdf

Description:: IC OCTAL TRANSP LATCH 20-TSSOP

In Stock:: 980

Quantity:: Add To Cart

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SN74HC573APWR Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
74HC
ProductStatus:
Active
LogicType:
D-Type Transparent Latch
Circuit:
8:8
OutputType:
Tri-State
Voltage-Supply:
2V ~ 6V
IndependentCircuits:
1
DelayTime-Propagation:
23ns
Current-OutputHighLow:
7.8mA, 7.8mA
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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SN74HC573APWR information

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SN74HC573APWR Typical application Circuitry

SN74HC573APWR

The SN74HC573APWR is an octal transparent D-type latch with 3-state outputs. This integrated circuit is designed for capturing and holding data. It's particularly effective in interface applications where it is necessary to buffer bidirectional bus lines.

Operational Essence

The SN74HC573APWR is capable of storing eight bits of data when the latch enable (LE) input is high. The data is accessible at the outputs when the output enable (OE) input is low, allowing for seamless bidirectional data flow.

Deployment Scenarios

The SN74HC573APWR is instrumental in systems where data needs to be stored temporarily. It's particularly useful in data buses of microprocessor systems, where it serves to interface the microprocessor with other peripherals, ensuring data integrity during transfer.

Salient Specifications

- Supply Voltage (Vcc): Generally between 2V and 6V.

- Input High Voltage (VIH): Typically greater than 2V for a logical '1'.

- Input Low Voltage (VIL): Generally less than 0.8V for a logical '0'.

- Output Current (IO): Can drive up to 6 mA.

- Switching Characteristics: Transition times vary based on Vcc and the load.

Circuit Configuration: Data Bus Interface

In this scenario, the SN74HC573APWR is utilized to facilitate a microprocessor's communication with peripheral devices through a data bus.

1. Ensuring Proper Power Supply

- Vcc (Pin 20): Connect this pin to a stable +5V source.

- Ground (Pin 10): This pin should be connected to the system ground.

2. Latch Enable Configuration

- Latch Enable (LE, Pin 11): Link this to the control line that indicates when data is to be latched. Data is latched on the high-to-low transition.

3. Output Enable Management

- Output Enable (OE, Pin 1): Connect this to the control line that allows data to be read from the latches. Outputs are enabled when this pin is low.

4. Data Inputs and Outputs

- Data Inputs (D0-D7, Pins 2-7, 15-18): Connect these to the data bus lines.

- Data Outputs (Q0-Q7, Pins 19, 20, 22-25, 27, 28): These pins provide the stored data to the connected peripherals when OE is low.

5. Managing Unused Inputs

- Ensure that any unused input pins are tied to a defined logic level to avoid floating inputs, which can lead to unpredictable behavior.

Design Considerations

When designing with the SN74HC573APWR, it's crucial to consider the following aspects:

1. Power Integrity: A stable and clean power supply is critical to prevent unintended data latching or output enabling.

2. Control Signal Timing: Proper timing of LE and OE signals is essential to ensure correct data capture and output.

3. Decoupling for Noise Reduction: Place a decoupling capacitor close to the Vcc pin to minimize power supply noise.

4. Input Signal Definition: Clearly define the state of each input, especially the unused ones, to prevent high power consumption and ensure reliable operation.

In conclusion, the SN74HC573APWR is a key component in digital systems, especially where data buffering and bidirectional communication are required. Its ability to interface microprocessors with peripherals efficiently makes it an indispensable part of data bus systems. Careful attention to power supply quality, signal timing, and input management ensures the effective and reliable operation of the SN74HC573APWR in these complex digital ecosystems. Whether it's for temporary data storage or facilitating communication between system components, the SN74HC573APWR proves to be a versatile and valuable asset in digital 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 SN74HC573APWR.

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