Overview
The SN74AC574DWR is an octal D-type edge-triggered flip-flop with 3-state outputs, manufactured by Texas Instruments. This device is part of the SN74AC series, known for its high-speed and low-power CMOS logic. It is designed to operate over a wide voltage range from 2V to 6V, making it versatile for various applications. The SN74AC574DWR features eight D-type flip-flops with 3-state outputs, which are ideal for driving highly capacitive or low-impedance loads, such as buffer registers, I/O ports, bidirectional bus drivers, and working registers.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Max | |
|---|---|---|---|---|---|
| VCC Operating Range | V | 2 | 6 | ||
| Maximum Clock Frequency at VCC = 5V | MHz | 75 | 100 | ||
| Pulse Duration, CLK High or Low at VCC = 5V | ns | 6 | 7.5 | ||
| Setup Time, Data Before CLK↑ at VCC = 5V | ns | 2.5 | 6.5 | ||
| Hold Time, Data After CLK↑ at VCC = 5V | ns | 1.5 | 2.5 | ||
| Output High Voltage (VOH) at IOH = -12mA, VCC = 5V | V | 3.94 | 3.7 | 3.76 | |
| Output Low Voltage (VOL) at IOL = 12mA, VCC = 5V | V | 0.36 | 0.5 | 0.44 | |
| Input Current (II) at VI = VCC or GND, VCC = 5.5V | μA | ±0.1 | ±1 | ||
| Quiescent Current (ICC) at VI = VCC or GND, IO = 0, VCC = 5.5V | μA | 4 | 80 | ||
| Operating Temperature Range | °C | -40 | 85 | ||
| Package Type | SOIC (DW) | ||||
| Package Size | mm² | 132 mm²: 10.3 x 12.8 |
Key Features
- Operation over a wide voltage range from 2V to 6V.
- Inputs accept voltages up to 6V.
- Maximum propagation delay time (tpd) of 8.5ns at VCC = 5V.
- 3-state outputs capable of driving highly capacitive or low-impedance loads.
- CMOS logic for low power consumption.
- Eight D-type edge-triggered flip-flops with 3-state outputs.
- Suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
Applications
The SN74AC574DWR is suitable for a variety of applications, including:
- Buffer registers: For temporary storage and buffering of data.
- I/O ports: For input/output operations in digital systems.
- Bidirectional bus drivers: For driving and receiving data on buses.
- Working registers: For temporary storage and manipulation of data within digital circuits.
- Highly capacitive or low-impedance loads: Such as in memory interfaces, data transmission lines, and other high-capacity applications.
Q & A
- What is the operating voltage range of the SN74AC574DWR?
The SN74AC574DWR operates over a voltage range from 2V to 6V. - What is the maximum clock frequency at VCC = 5V?
The maximum clock frequency at VCC = 5V is up to 100 MHz. - What is the setup time for data before the clock rises at VCC = 5V?
The setup time for data before the clock rises at VCC = 5V is between 2.5ns and 6.5ns. - What is the hold time for data after the clock rises at VCC = 5V?
The hold time for data after the clock rises at VCC = 5V is between 1.5ns and 2.5ns. - What type of outputs does the SN74AC574DWR have?
The SN74AC574DWR has 3-state outputs. - What is the maximum output current (IOL/IOH) of the SN74AC574DWR?
The maximum output current (IOL/IOH) is 24mA/-24mA. - What is the operating temperature range of the SN74AC574DWR?
The operating temperature range is from -40°C to 85°C. - What package types are available for the SN74AC574DWR?
The SN74AC574DWR is available in SOIC (DW) package among others. - What are some common applications of the SN74AC574DWR?
Common applications include buffer registers, I/O ports, bidirectional bus drivers, and working registers. - Is the SN74AC574DWR suitable for high-capacity loads?
Yes, the SN74AC574DWR is suitable for driving highly capacitive or low-impedance loads.
