Overview
The 74LVC574AD,118 is an 8-bit positive-edge triggered D-type flip-flop with 3-state outputs, manufactured by Nexperia (previously part of NXP Semiconductors). This device is designed for use in a wide range of digital logic applications, particularly in mixed 3.3 V and 5 V environments. It features a clock (CP) and output enable (OE) inputs, allowing for flexible control over the output states. The flip-flops store the state of their individual D-inputs on the LOW-to-HIGH clock transition, and a HIGH on the OE input causes the outputs to assume a high-impedance OFF-state without affecting the flip-flop states.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | fmax (MHz) | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 74LVC574AD | 1.2 - 3.6 | CMOS/LVTTL | ± 24 | 3.2 | 150 | low | -40~125 | 85 | 27.6 | 61 | SO20 |
Key Features
- Octal D-type flip-flop with 3-state outputs
- Positive edge-triggered
- 5 V tolerant inputs/outputs
- Schmitt-trigger action at all inputs for tolerance of slower input rise and fall times
- Wide supply voltage range from 1.2 to 3.6 V
- CMOS low power consumption
- Direct interface with TTL levels
- Overvoltage tolerant inputs to 5.5 V
- High-impedance when VCC = 0 V
- Independent register and 3-state buffer operation
- Flow-through pin-out architecture
- IOFF circuitry provides partial Power-down mode operation
- Complies with JEDEC standards: JESD8-7A, JESD8-5A, JESD8-C/JESD36
- ESD protection: HBM ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Applications
The 74LVC574AD is suitable for various digital logic applications, including:
- Mixed 3.3 V and 5 V environments
- Partial power-down applications
- Systems requiring low power consumption and high-speed operation
- Interfaces between different voltage level systems
- General-purpose digital logic circuits
Q & A
- What is the primary function of the 74LVC574AD?
The 74LVC574AD is an 8-bit positive-edge triggered D-type flip-flop with 3-state outputs.
- What is the voltage range for the VCC supply?
The VCC supply voltage range is from 1.2 to 3.6 V.
- Is the 74LVC574AD tolerant of different input voltages?
Yes, it has 5 V tolerant inputs/outputs and can interface directly with TTL levels.
- What is the maximum clock frequency for the 74LVC574AD?
The maximum clock frequency is 150 MHz.
- Does the 74LVC574AD have ESD protection?
Yes, it has ESD protection: HBM ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V.
- What is the operating temperature range for the 74LVC574AD?
The operating temperature range is from -40 °C to +125 °C.
- What package type is the 74LVC574AD available in?
The 74LVC574AD is available in the SO20 (SOT163-1) package.
- Does the 74LVC574AD support partial power-down mode?
Yes, it supports partial power-down mode operation through IOFF circuitry.
- Is the 74LVC574AD compliant with any specific standards?
Yes, it complies with JEDEC standards: JESD8-7A, JESD8-5A, JESD8-C/JESD36.
- What is the output drive capability of the 74LVC574AD?
The output drive capability is ± 24 mA.
- How does the output enable (OE) input affect the outputs?
A HIGH on the OE input causes the outputs to assume a high-impedance OFF-state without affecting the flip-flop states.
