Overview
The SN74ALS541NSRG4 is an octal buffer and line driver produced by Texas Instruments. This component is part of the ALS (Advanced Low-Power Schottky) family and is designed to offer high performance with low power consumption. It features 3-state outputs, which can drive bus lines or buffer memory address registers, making it versatile for various digital circuit applications.
Key Specifications
| Parameter | Unit | Min | Nom | Max |
|---|---|---|---|---|
| Supply Voltage (VCC) | V | 4.5 | 5 | 5.5 |
| High-Level Input Voltage (VIH) | V | 2 | 2 | |
| Low-Level Input Voltage (VIL) | V | 0.7 | 0.8 | |
| High-Level Output Current (IOH) | mA | -12 | -15 | |
| Low-Level Output Current (IOL) | mA | 12 | 24 (48 for -1 version) | |
| Operating Free-Air Temperature (TA) | °C | 0 | 70 | |
| Package Type | SO (NS) | |||
| Pins | 20 |
Key Features
- 3-State Outputs: Drive bus lines or buffer memory address registers.
- P-N-P Inputs: Reduce DC loading.
- Hysteresis at Inputs: Improves noise margins.
- Data Flow-thru Pinout: All inputs on opposite side from outputs, enhancing PCB layout.
- True Data Output: The SN74ALS541 offers true data at the outputs, unlike the inverting data of the SN74ALS540.
Applications
The SN74ALS541 is suitable for a variety of digital circuit applications, including:
- Buffering memory address registers.
- Driving bus lines in digital systems.
- Improving signal integrity in noisy environments due to hysteresis at inputs.
- Enhancing PCB layout flexibility with data flow-thru pinout.
Q & A
- What is the primary function of the SN74ALS541?
The primary function of the SN74ALS541 is to act as an octal buffer and line driver, providing 3-state outputs to drive bus lines or buffer memory address registers.
- What is the operating temperature range for the SN74ALS541?
The operating temperature range for the SN74ALS541 is from 0°C to 70°C.
- What is the supply voltage range for the SN74ALS541?
The supply voltage range for the SN74ALS541 is from 4.5V to 5.5V.
- What is the significance of the 3-state outputs in the SN74ALS541?
The 3-state outputs allow the device to drive bus lines or buffer memory address registers and can be set to a high-impedance state, which is useful for multiplexing and demultiplexing applications.
- How does the SN74ALS541 improve noise margins?
The SN74ALS541 improves noise margins through hysteresis at the inputs, which helps in reducing the effect of noise on the input signals.
- What is the difference between the SN74ALS540 and SN74ALS541?
The SN74ALS540 offers inverting data at the outputs, while the SN74ALS541 offers true data at the outputs.
- What is the package type and pin count of the SN74ALS541NSRG4?
The package type is SO (NS) with 20 pins.
- Can the SN74ALS541 be used in military temperature ranges?
No, the SN74ALS541 is characterized for operation from 0°C to 70°C, not the full military temperature range.
- What is the maximum low-level output current for the -1 version of the SN74ALS541?
The maximum low-level output current for the -1 version is 48 mA, provided VCC is between 4.75 V and 5.25 V.
- How does the data flow-thru pinout benefit PCB design?
The data flow-thru pinout, where all inputs are on one side and all outputs are on the opposite side, enhances the flexibility and simplicity of PCB layout.
