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Name: 74HC74D
Brand: Toshiba Semiconductor and Storage
SKU: 74HC74D
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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Toshiba Semiconductor and Storage 74HC74D

Part No.:: 74HC74D

Manufacturer:: Toshiba Semiconductor and Storage

Package:: 14-SOIC

Datasheet:: 74HC74D.pdf

Description:: IC FF D-TYPE DUAL 1BIT 14SOIC

In Stock:: 3062

Quantity:: Add To Cart

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74HC74D Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
74HC
ProductStatus:
Active
Function:
Set(Preset) and Reset
Type:
D-Type
OutputType:
Complementary
NumberofElements:
2
NumberofBitsperElement:
1
ClockFrequency:
67 MHz
MaxPropagationDelay@VMaxCL:
26ns @ 6V, 50pF
TriggerType:
Positive Edge
Current-OutputHighLow:
5.2mA, 5.2mA
Voltage-Supply:
2V ~ 6V
Current-Quiescent(Iq):
2 µA
InputCapacitance:
5 pF
OperatingTemperature:
-40°C ~ 85°C (TA)
MountingType:
Surface Mount

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74HC74D information

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74HC74D Typical application Circuitry

74HC74D

The 74HC74D is essentially a dual D-type flip-flop with set and reset capabilities. Each flip-flop is used to capture the value of a data line.

Applications:

1. Edge Detection: To recognize the transitions from low to high or vice versa.

2. Frequency Dividers: To halve the frequency of a clock signal.

3. Data Storage: Temporarily holding onto data before processing or output.

Technical Traits:

- Dual D-Type Flip-Flops: Two independent flip-flops are present in one package.

- Direct Clear and Set Inputs: Allowing for immediate resetting or setting of the flip-flop state.

- Dedicated Clock Input: A change on this pin can prompt the flip-flop to capture the data line's value.

A Dive into Frequency Division:

Harnessing the 74HC74D as a frequency divider is a common application. Here's a detailed method to design such a circuit:

1. Powering the Chip:

- VCC (Pin 14): This pin is connected to the positive end of your power supply, typically +5V.

- GND (Pin 7): This is connected to the ground or negative end of your power supply.

2. Feeding the Clock Signal:

- CP (Pin 3 or Pin 11): Attach your input clock signal here. Every time this signal transitions from low to high, the flip-flop will capture the state of the D input.

3. Setting Data Input:

- D (Pin 2 or Pin 12): For a frequency divider, connect this pin to the Q' (inverted output) of the same flip-flop.

4. Extracting the Output:

- Q (Pin 5 or Pin 9): This will give you an output signal that's half the frequency of your input clock signal.

5. Reset and Set:

- SD (Pin 1 or Pin 13) and RD (Pin 4 or Pin 10): For typical frequency division, connect these to the high voltage level (e.g., +5V) to disable the reset and set functions.

Design Considerations:

- Debouncing: If using switches to control inputs, ensure that there's no switch bounce which can cause erratic behavior.

- Clock Signal Integrity: Maintain a clean clock signal to prevent false triggering or missed transitions.

- Input Capacitance: Keep in mind that long leads or connections can add capacitance, potentially affecting timing.

- Power Noise: Decoupling capacitors close to the VCC and GND pins can help stabilize the chip against voltage fluctuations.

In sum, the 74HC74D is a chip that is indispensable in the world of digital logic design. With its straightforward yet versatile functionality, it's a mainstay in many electronic projects.

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6. What is the process for return or replacement of 74HC74D?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the 74HC74D we delivered, we will accept the replacement or return of the 74HC74D only when all of the below conditions are fulfilled:

(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 74HC74D.

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

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations