Overview
The SN74ALS574BDWR is an octal D-type edge-triggered flip-flop with 3-state outputs, manufactured by Texas Instruments. This component is designed for bus driving and is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The flip-flops enter data on the low-to-high transition of the clock (CLK) input, and the output-enable (OE) input does not affect the internal operations of the flip-flops. This allows old data to be retained or new data to be entered while the outputs are in the high-impedance state.
Key Specifications
| Parameter | Unit | Min | Nom | Max |
|---|---|---|---|---|
| Supply Voltage (VCC) | V | 4.5 | 5 | 5.5 |
| High-Level Input Voltage (VIH) | V | 2 | ||
| Low-Level Input Voltage (VIL) | V | 0.7 | 0.8 | |
| Clock Frequency (fCLK) | MHz | 0 | 28 | |
| Pulse Duration (CLK high or low) | ns | 16.5 | ||
| Setup Time before CLK↑ (Data) | ns | 15 | ||
| Hold Time after CLK↑ (Data) | ns | 4 | ||
| Operating Free-Air Temperature (TA) | °C | 0 | 70 | |
| Storage Temperature Range | °C | –65 | 150 | |
| Package Type | SOIC (DW) | |||
| Number of Pins | 20 |
Key Features
- Octal D-type edge-triggered flip-flops with 3-state outputs designed for bus driving.
- Buffered control inputs and bus-structured pinout.
- Output-enable (OE) input does not affect internal operations, allowing data retention or new data entry while outputs are in the high-impedance state.
- Available in various package options including SOIC (DW), PDIP (N), and ceramic packages.
- Characterized for operation from 0°C to 70°C for commercial versions and –55°C to 125°C for military versions.
Applications
- Implementing buffer registers and working registers.
- Designing I/O ports and bidirectional bus drivers.
- Used in various digital circuits requiring edge-triggered flip-flops with 3-state outputs.
- Suitable for applications in telecommunications, industrial control systems, and computer peripherals.
Q & A
- What is the SN74ALS574BDWR?
The SN74ALS574BDWR is an octal D-type edge-triggered flip-flop with 3-state outputs, manufactured by Texas Instruments.
- What is the operating temperature range for the SN74ALS574BDWR?
The operating temperature range is from 0°C to 70°C for commercial versions.
- What package types are available for the SN74ALS574BDWR?
It is available in SOIC (DW), PDIP (N), and various ceramic packages.
- What is the clock frequency range for the SN74ALS574BDWR?
The clock frequency range is up to 28 MHz.
- How do the 3-state outputs function?
The 3-state outputs can drive bus lines directly and can be set to a high-impedance state, allowing for data retention or new data entry.
- What are the typical applications of the SN74ALS574BDWR?
It is used in implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
- What is the supply voltage range for the SN74ALS574BDWR?
The supply voltage range is from 4.5V to 5.5V.
- Does the SN74ALS574BDWR have synchronous clear capability?
No, the SN74ALS574BDWR does not have synchronous clear capability, but other variants like the SN74ALS575A do.
- What is the storage temperature range for the SN74ALS574BDWR?
The storage temperature range is from –65°C to 150°C.
- Is the SN74ALS574BDWR RoHS compliant?
