規格
| 屬性 | 價值 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | 74HC |
| Part Status | Active |
| Function | Standard |
| Type | D-Type |
| Output Type | Tri-State, Non-Inverted |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Clock Frequency | 59 MHz |
| Max Propagation Delay @ V Max CL | 33ns @ 6V, 150pF |
| Trigger Type | Positive Edge |
| Current - Output High Low | 7.8mA, 7.8mA |
| Voltage - Supply | 2V ~ 6V |
| Current - Quiescent (Iq) | 4 µA |
| Input Capacitance | 5 pF |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Supplier Device Package | 20-SOIC |
概述
Description
The 74HC574D is a high-speed CMOS octal D-type flip-flop with 3-state outputs. It is part of the 74HC logic family, known for low power consumption and fast switching speeds. This device features eight edge-triggered D-type flip-flops with individual D inputs and Q outputs. An important characteristic is its ability to store data on the rising edge of the clock pulse, making it suitable for applications requiring data storage and synchronization.
The 74HC574D also includes an output enable (OE) pin that controls the 3-state outputs. When OE is low, the flip-flop outputs are active and reflect the stored data; when high, the outputs are in a high-impedance state, effectively disconnecting them from the circuit and allowing for bus line sharing.
The IC operates typically with a supply voltage range of 2V to 6V, making it compatible with TTL levels. Common applications include data buffering, temporary data storage, and interfacing between different logic levels. Its 20-pin configuration makes it suitable for integration in various digital systems.
The 74HC574D also includes an output enable (OE) pin that controls the 3-state outputs. When OE is low, the flip-flop outputs are active and reflect the stored data; when high, the outputs are in a high-impedance state, effectively disconnecting them from the circuit and allowing for bus line sharing.
The IC operates typically with a supply voltage range of 2V to 6V, making it compatible with TTL levels. Common applications include data buffering, temporary data storage, and interfacing between different logic levels. Its 20-pin configuration makes it suitable for integration in various digital systems.
Equivalent
The 74HC574D is a high-speed CMOS octal D-type flip-flop with a 3-state output. Equivalent products include:
1. SN74HC574N from Texas Instruments
2. CD74HC574E from Texas Instruments
3. 74HCT574D from Nexperia
4. MC74HC574AD from ON Semiconductor
5. HEF4754B from NXP
These chips generally offer similar functionality and are available from different manufacturers. Always check the datasheets to ensure pin compatibility and electrical characteristics match your requirements.
1. SN74HC574N from Texas Instruments
2. CD74HC574E from Texas Instruments
3. 74HCT574D from Nexperia
4. MC74HC574AD from ON Semiconductor
5. HEF4754B from NXP
These chips generally offer similar functionality and are available from different manufacturers. Always check the datasheets to ensure pin compatibility and electrical characteristics match your requirements.
Features
The 74HC574D is an octal D-type flip-flop IC featuring eight edge-triggered D-type flip-flops with 3-state outputs. Key features include:
1. High-Speed CMOS Technology: It offers fast switching speeds with low power consumption.
2. Operating Voltage Range: Typically operates from 2V to 6V.
3. 3-State Outputs: Allows for bus interfacing by enabling outputs to be in a high-impedance state.
4. Edge-Triggered: Data is latched on the rising edge of the clock pulse.
5. Standard Pin Configuration: Follows standard 20-pin package formats like SO20.
6. Output Drive Capability: Capable of driving 15 LSTTL loads.
7. Low Input Current: High immunity to noise, with low static power consumption.
8. Latch Inputs: Directly compatible with TTL outputs.
9. Wide Range of Applications: Suitable for use in various digital systems for data storage and transfer tasks.
These features make the 74HC574D a versatile choice for digital circuit design, particularly where reliable data storage and transfer are required.
1. High-Speed CMOS Technology: It offers fast switching speeds with low power consumption.
2. Operating Voltage Range: Typically operates from 2V to 6V.
3. 3-State Outputs: Allows for bus interfacing by enabling outputs to be in a high-impedance state.
4. Edge-Triggered: Data is latched on the rising edge of the clock pulse.
5. Standard Pin Configuration: Follows standard 20-pin package formats like SO20.
6. Output Drive Capability: Capable of driving 15 LSTTL loads.
7. Low Input Current: High immunity to noise, with low static power consumption.
8. Latch Inputs: Directly compatible with TTL outputs.
9. Wide Range of Applications: Suitable for use in various digital systems for data storage and transfer tasks.
These features make the 74HC574D a versatile choice for digital circuit design, particularly where reliable data storage and transfer are required.
Pinout
The 74HC574D is a high-speed CMOS logic device featuring an octal D-type flip-flop with tri-state outputs, commonly used for data storage and transfer. It has a total of 20 pins, arranged in a small-outline integrated circuit (SOIC) package. The primary function of the 74HC574D is to latch data from inputs upon receiving a clock pulse and to hold this data until the next clock event.
Here's a concise pin description:
- VCC (Pin 20): Supply voltage.
- GND (Pin 10): Ground.
- Pins 1-8 (D0-D7): Data input pins.
- Pins 11-18 (Q0-Q7): Data output pins.
- OE (Pin 19): Output Enable; when low, output data is enabled.
- CP (Pin 9): Clock input; data is latched on the rising edge.
This device is widely used in digital systems for buffering and synchronizing parallel data, due to its ability to drive high-current loads and its fast switching characteristics.
Here's a concise pin description:
- VCC (Pin 20): Supply voltage.
- GND (Pin 10): Ground.
- Pins 1-8 (D0-D7): Data input pins.
- Pins 11-18 (Q0-Q7): Data output pins.
- OE (Pin 19): Output Enable; when low, output data is enabled.
- CP (Pin 9): Clock input; data is latched on the rising edge.
This device is widely used in digital systems for buffering and synchronizing parallel data, due to its ability to drive high-current loads and its fast switching characteristics.
Manufacturer
The 74HC574D is manufactured by Nexperia, a semiconductor company. Nexperia specializes in the production of discrete components, logic devices, and MOSFETs, serving various sectors including automotive, industrial, computing, and consumer electronics. The company is known for its focus on efficiency, quality, and high-volume production capabilities. Originally part of NXP Semiconductors, Nexperia became an independent entity in 2017.
Application
The 74HC574D is an octal D-type flip-flop with 3-state outputs, commonly used in digital electronics. Its applications include data storage and transfer, parallel data capture, and buffering. It's often employed in microcontroller and microprocessor systems for temporary data storage, signal delay, or synchronization. The device can also serve in implementing shift registers, counters, and memory interfacing. Its ability to maintain data integrity and provide controlled data flow makes it suitable for use in communication systems, data acquisition systems, and any applications requiring stable data retention or transfer. Its 3-state outputs facilitate easy bus interfacing and multiplexing.
Package
The 74HC574D is a high-speed CMOS device and comes in a small outline integrated circuit (SOIC) package. Specifically, it is often found in a 20-pin SOIC package, which is suitable for surface-mount technology.
