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74HC74D
IC FF D-TYPE DUAL 1BIT 14SOIC
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- 製造商。 部分 #74HC74D
- 包 SOIC-14
- 資料表 74HC74D DataSheet
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規格
| Package | Tape & Reel (TR),Cut Tape (CT) |
| 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 |
| SupplierDevicePackage | 14-SOIC |
概述
Description
The 74HC74D is a dual D-type flip-flop integrated circuit (IC) that operates in high-speed CMOS technology. It features two independent D flip-flops, each with a data input (D), a clock input (CLK), a set input (SET), a reset input (RESET), and complementary outputs (Q and Q'). The flip-flops capture the value of the D input on the rising edge of the clock signal, allowing for synchronous data storage.
The 74HC74D is widely used in digital circuits for data storage, state machines, and various sequential logic applications. It benefits from low power consumption, high noise immunity, and compatibility with standard logic levels.
The IC is available in various package types, making it versatile for different circuit designs. Its high-speed operation and reliability make it a popular choice in both hobbyist and professional electronics projects.
The 74HC74D is widely used in digital circuits for data storage, state machines, and various sequential logic applications. It benefits from low power consumption, high noise immunity, and compatibility with standard logic levels.
The IC is available in various package types, making it versatile for different circuit designs. Its high-speed operation and reliability make it a popular choice in both hobbyist and professional electronics projects.
Features
The 74HC74D is a dual D-type flip-flop with asynchronous preset and clear inputs. Key features include:
1. Dual Flip-Flops: Contains two independent D flip-flops in a single package.
2. Edge Triggered: Operates on the rising edge of the clock signal, allowing for synchronized operation.
3. Asynchronous Inputs: Includes asynchronous active-high preset (PR) and clear (CLR) inputs for immediate state control.
4. High-Speed Operation: Designed for high-speed logic applications with a maximum propagation delay of around 15 ns (at 5V).
5. Wide Supply Voltage Range: Operates within a supply voltage range of 2V to 6V.
6. Low Power Consumption: Characterized by low static and dynamic power consumption, making it suitable for battery-operated devices.
7. Schmitt Trigger Inputs: Provides improved noise immunity, allowing for reliable signal detection.
8. TTL Compatible: Compatible with TTL logic levels, facilitating easy integration with other circuits.
These features make the 74HC74D ideal for applications in digital circuits requiring data storage and synchronization.
1. Dual Flip-Flops: Contains two independent D flip-flops in a single package.
2. Edge Triggered: Operates on the rising edge of the clock signal, allowing for synchronized operation.
3. Asynchronous Inputs: Includes asynchronous active-high preset (PR) and clear (CLR) inputs for immediate state control.
4. High-Speed Operation: Designed for high-speed logic applications with a maximum propagation delay of around 15 ns (at 5V).
5. Wide Supply Voltage Range: Operates within a supply voltage range of 2V to 6V.
6. Low Power Consumption: Characterized by low static and dynamic power consumption, making it suitable for battery-operated devices.
7. Schmitt Trigger Inputs: Provides improved noise immunity, allowing for reliable signal detection.
8. TTL Compatible: Compatible with TTL logic levels, facilitating easy integration with other circuits.
These features make the 74HC74D ideal for applications in digital circuits requiring data storage and synchronization.
Package
The 74HC74D is packaged in a dual in-line package (DIP) format, specifically a 14-pin DIP. It features standard pin spacing, making it suitable for breadboarding and through-hole mounting in electronic circuits.
Pinout
The 74HC74D is a dual D-type flip-flop with a total of 14 pins. Its pin configuration and functions are as follows:
1. Pin 1 (D1): Data input of the first flip-flop.
2. Pin 2 (C1): Clock input for the first flip-flop.
3. Pin 3 (CLR1): Asynchronous clear for the first flip-flop (active low).
4. Pin 4 (PRE1): Asynchronous preset for the first flip-flop (active low).
5. Pin 5 (Q1): Output of the first flip-flop.
6. Pin 6 (Q1'): Inverted output of the first flip-flop.
7. Pin 7 (GND): Ground.
8. Pin 8 (VCC): Power supply (typically 2V to 6V).
9. Pin 9 (D2): Data input of the second flip-flop.
10. Pin 10 (C2): Clock input for the second flip-flop.
11. Pin 11 (CLR2): Asynchronous clear for the second flip-flop (active low).
12. Pin 12 (PRE2): Asynchronous preset for the second flip-flop (active low).
13. Pin 13 (Q2): Output of the second flip-flop.
14. Pin 14 (Q2'): Inverted output of the second flip-flop.
The device is used in digital circuits for data storage, synchronization, and state management.
1. Pin 1 (D1): Data input of the first flip-flop.
2. Pin 2 (C1): Clock input for the first flip-flop.
3. Pin 3 (CLR1): Asynchronous clear for the first flip-flop (active low).
4. Pin 4 (PRE1): Asynchronous preset for the first flip-flop (active low).
5. Pin 5 (Q1): Output of the first flip-flop.
6. Pin 6 (Q1'): Inverted output of the first flip-flop.
7. Pin 7 (GND): Ground.
8. Pin 8 (VCC): Power supply (typically 2V to 6V).
9. Pin 9 (D2): Data input of the second flip-flop.
10. Pin 10 (C2): Clock input for the second flip-flop.
11. Pin 11 (CLR2): Asynchronous clear for the second flip-flop (active low).
12. Pin 12 (PRE2): Asynchronous preset for the second flip-flop (active low).
13. Pin 13 (Q2): Output of the second flip-flop.
14. Pin 14 (Q2'): Inverted output of the second flip-flop.
The device is used in digital circuits for data storage, synchronization, and state management.
Manufacturer
The 74HC74D is a dual D-type flip-flop integrated circuit manufactured by various electronic component companies, with Texas Instruments (TI) being one of the most prominent producers. Texas Instruments is a global semiconductor company that designs and manufactures a wide range of analog and digital ICs, including microcontrollers, processors, and various logic devices. Established in 1930, TI is known for its innovation in electronics and plays a significant role in the development of technologies for various applications, including automotive, industrial, and consumer electronics. The company focuses on providing high-performance semiconductor solutions to meet the growing demands of the electronics industry.
Application
The 74HC74D is a dual D-type flip-flop used in various applications, including data storage, memory devices, and digital circuits. It functions as a register for storing binary data, frequency division, and state retention in sequential logic circuits. Additionally, it serves in timing applications, pulse generators, and edge-triggered data sampling, making it essential in clocked systems and digital signal processing. Its versatility allows integration in microcontroller interfacing and control systems as well.
Equivalent
The 74HC74D chip, a dual D-type flip-flop, has several equivalents including:
1. 74HCT74
2. 74LS74
3. 74F74
4. MC74HC74
5. CD74HC74
These chips function similarly but may differ in specifications like power supply voltage and output drive capability. Always check the datasheet for compatibility in specific applications.
1. 74HCT74
2. 74LS74
3. 74F74
4. MC74HC74
5. CD74HC74
These chips function similarly but may differ in specifications like power supply voltage and output drive capability. Always check the datasheet for compatibility in specific applications.
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