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Name: 74HC574D,652
Brand: Nexperia USA Inc.
SKU: 74HC574D,652
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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Nexperia USA Inc. 74HC574D,652

Part No.:: 74HC574D,652

Manufacturer:: Nexperia USA Inc.

Package:: 20-SO

Datasheet:: 74HC574D,652.pdf

Description:: IC FF D-TYPE SNGL 8BIT 20SO

In Stock:: 2074

Quantity:: Add To Cart

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74HC574D,652 Typical application Circuitry

74HC574D,652

The 74HC574D,652 is a high-speed CMOS octal D-type flip-flop with positive-edge-triggered inputs and 3-state outputs, part of the 74HC series. This device is designed to capture data at its data inputs (D0 to D7) on the rising edge of the clock input (CP) and can either present this data at its outputs (Q0 to Q7) or remain isolated from the output bus through its 3-state control mechanism.

Application Scenarios

The 74HC574D,652 is versatile, finding use in data storage, signal buffering, bus interfacing, and as a transitional storage device in microprocessor and microcontroller systems. It effectively acts as a buffer or storage register in these applications, facilitating the orderly transfer of data.

Implementing a Microcontroller Data Bus Interface

Designing a data bus interface for a microcontroller system using the 74HC574D,652 involves detailed planning regarding the chip's pin connections and operational functionalities. Here's a comprehensive guide:

Input Data Configuration

Connecting Data Inputs: Pins D0 to D7 (Pins 2, 5, 6, 9, 12, 15, 16, 19 of the 74HC574D,652) must be connected to the microcontroller's data output ports. This setup enables data transmission from the microcontroller to the flip-flop.

Clock Signal Synchronization

Applying the Clock Signal: Pin 11 (CP), the clock input of the 74HC574D,652, is essential for data latching. This pin should be connected to a clock source that is synchronized with the microcontroller's operation, ensuring that data is captured at the appropriate times.

Output Management for Data Bus

Controlling the Outputs: The Q outputs (Pins 18, 13, 14, 11, 8, 7, 4, 1) should be connected to the system's data bus or the next processing stage. The Output Enable (OE) pin, Pin 9, toggles the output between active and high-impedance states, facilitating bus interfacing or isolation as required.

Ensuring Power Supply Stability

Power Supply Connections: It's vital to connect Pin 20 (Vcc) to a stable +5V source and Pin 10 (GND) to ground. Maintaining a stable power supply is crucial for the reliable operation of the 74HC574D,652.

Circuit Design Considerations

When incorporating the 74HC574D,652 into a microcontroller data bus interface, several critical considerations must be addressed:

- Timing and Synchronization: Ensuring that the data presented to the D inputs are stable before the clock's rising edge is crucial for accurate capturing. This requires careful planning of clock and data signal routing.

- Power Integrity: Variations in the power supply can impact device performance. Using decoupling capacitors near the power pins of the 74HC574D,652 can help stabilize the power supply.

- Avoiding Bus Contention: Proper logic and timing must be implemented to ensure that the 74HC574D,652 does not drive the bus when another device is transmitting, preventing data corruption.

- Signal Integrity: In high-speed applications, attention to PCB layout, including trace impedance control and minimizing cross-talk, is vital to preserve signal quality.

The use of the 74HC574D,652 for a microcontroller data bus interface exemplifies its capability to enhance data management and transfer in digital systems. Its 3-state outputs, combined with the edge-triggered data capturing, make it a valuable component in designing efficient, reliable digital circuits. Understanding the 74HC574D,652's operational characteristics and carefully planning the circuit layout are key to developing effective digital solutions.

74HC574D,652 information

74HC574D,652 Specifications

Packaging:
Tube
Series:
74HC
ProductStatus:
Obsolete
Function:
Standard
Type:
D-Type
OutputType:
Tri-State, Non-Inverted
NumberofElements:
1
NumberofBitsperElement:
8
ClockFrequency:
133 MHz
MaxPropagationDelay@VMaxCL:
26ns @ 6V, 50pF
TriggerType:
Positive Edge
Current-OutputHighLow:
7.8mA, 7.8mA
Voltage-Supply:
2V ~ 6V
Current-Quiescent(Iq):
8 µA
InputCapacitance:
3.5 pF
OperatingTemperature:
-40°C ~ 125°C (TA)
MountingType:
Surface Mount

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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.

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