Overview
The 74HCT574D,653 is an 8-bit positive-edge triggered D-type flip-flop with 3-state outputs, manufactured by Nexperia USA Inc. This device is part of the 74HCT series, which is known for its compatibility with TTL (Transistor-Transistor Logic) levels. The flip-flop stores the state of its individual D-inputs that meet the set-up and hold time requirements on the LOW-to-HIGH clock (CP) transition. It features a clock (CP) and output enable (OE) inputs, where a HIGH on OE causes the outputs to assume a high-impedance OFF-state without affecting the state of the flip-flops.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | fmax (MHz) | Power dissipation considerations | Tamb (°C) | Package name |
|---|---|---|---|---|---|---|---|---|
| 74HCT574D | 4.5 - 5.5 | TTL | ± 6 | 15 | 76 | low | -40~125 | SO20 |
Key Features
- Positive-edge triggered D-type flip-flop: Stores the state of individual D-inputs on the LOW-to-HIGH clock transition.
- 3-state outputs: Outputs can be set to a high-impedance OFF-state via the output enable (OE) input.
- Wide supply voltage range: Operates from 4.5 V to 5.5 V.
- CMOS low power dissipation: Low power consumption.
- High noise immunity: Robust against noise.
- Latch-up performance: Exceeds 100 mA per JESD 78 Class II Level B.
- Compliance with JEDEC standards: Meets JESD8C (2.7 V to 3.6 V) and JESD7A (2.0 V to 6.0 V) standards.
- Input protection: Inputs include clamp diodes for voltage protection.
Applications
The 74HCT574D is versatile and can be used in a variety of applications across different industries, including:
- Automotive systems: For reliable and efficient data storage and transfer.
- Industrial control systems: To manage and store data in industrial automation.
- Consumer electronics: In devices requiring low power consumption and high noise immunity.
- Computing and data storage: For clocked data storage and retrieval in digital systems.
- Mobile and wearable devices: Where low power and compact design are crucial.
Q & A
- What is the primary function of the 74HCT574D?
The primary function is to act as an 8-bit positive-edge triggered D-type flip-flop with 3-state outputs.
- What is the supply voltage range for the 74HCT574D?
The device operates from 4.5 V to 5.5 V.
- What are the logic switching levels for the 74HCT574D?
The logic switching levels are TTL (Transistor-Transistor Logic) compatible.
- What is the output drive capability of the 74HCT574D?
The output drive capability is ± 6 mA.
- What is the maximum frequency of operation for the 74HCT574D?
The maximum frequency of operation is 76 MHz.
- What is the operating temperature range for the 74HCT574D?
The operating temperature range is -40°C to 125°C.
- What package type is the 74HCT574D available in?
The device is available in the SO20 (SOT163-1) package.
- Does the 74HCT574D have input protection?
Yes, the inputs include clamp diodes for voltage protection.
- Is the 74HCT574D compliant with any specific standards?
Yes, it complies with JEDEC standards JESD8C and JESD7A.
- What are some typical applications for the 74HCT574D?
Typical applications include automotive, industrial control, consumer electronics, computing, and mobile devices.
