Overview
The SN74ALS541N is an octal buffer and line driver produced by Texas Instruments. This component is part of the 74ALS series, known for its advanced Schottky logic. It features 3-state outputs, which can be set to a high-impedance state, making it suitable for driving bus lines or buffering memory address registers. The device has a data flowthrough pinout, with all inputs on one side and all outputs on the opposite side, facilitating easier printed circuit board layout.
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 | |
| Low-Level Output Current (IOL) for -1 version | mA | 48† | ||
| Operating Free-Air Temperature (TA) | °C | 0 | 70 |
Key Features
- 3-state outputs drive bus lines or buffer memory address registers.
- pnp Inputs reduce dc loading.
- Data flowthrough pinout (all inputs on one side and all outputs on the opposite side) facilitates printed circuit board layout.
- The 3-state control gate is a 2-input NOR gate, allowing outputs to be set to a high-impedance state if either output-enable input is high.
- The SN74ALS541 provides true data at the outputs.
- Available in various packages including PDIP, SOIC, and SOP.
Applications
- Driving bus lines in digital systems.
- Buffering memory address registers.
- Use in data transmission and reception circuits.
- Implementation in microprocessor and microcontroller systems for signal buffering and isolation.
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 true data at the outputs and featuring 3-state outputs.
- What are the key benefits of the 3-state outputs?
The 3-state outputs can be set to a high-impedance state, which is useful for driving bus lines and buffering memory address registers without causing conflicts.
- What is the significance of the data flowthrough pinout?
The data flowthrough pinout, with inputs on one side and outputs on the opposite side, simplifies the layout of printed circuit boards.
- How does the 3-state control gate work?
The 3-state control gate is a 2-input NOR gate; if either output-enable input is high, all eight outputs are in the high-impedance state.
- What are the recommended operating conditions for VCC?
The recommended operating conditions for VCC are between 4.5 V and 5.5 V.
- What is the maximum low-level output current for the standard version?
The maximum low-level output current for the standard version is 24 mA, but it can be increased to 48 mA for the -1 version under specific conditions.
- What are the typical applications of the SN74ALS541?
Typical applications include driving bus lines, buffering memory address registers, and use in data transmission and reception circuits.
- What packages is the SN74ALS541 available in?
The SN74ALS541 is available in various packages including PDIP, SOIC, and SOP.
- Is the SN74ALS541 RoHS compliant?
Yes, many versions of the SN74ALS541 are RoHS compliant and meet low halogen requirements.
- What is the operating temperature range for the SN74ALS541?
The operating free-air temperature range is from 0°C to 70°C.
