Overview
The SN74HCT541PWR, produced by Texas Instruments, is an octal buffer and line driver with 3-state outputs. This device is designed to offer high performance and ease of use in various digital logic applications. It is part of the ’HCT541 series, which is known for its compatibility with the popular ’HC240 series devices. The SN74HCT541PWR features a pinout with inputs and outputs on opposite sides of the package, greatly facilitating printed circuit board layout.
Key Specifications
| Parameter | Unit | Min | Max | |
|---|---|---|---|---|
| Operating Voltage Range | V | 4.5 | 5 | 5.5 |
| High-Level Input Voltage (VIH) | V | 2 | 2 | |
| Low-Level Input Voltage (VIL) | V | 0.8 | 0.8 | |
| Output Voltage (VO) | V | 0 | VCC | |
| Input Transition Rise and Fall Time | ns | 500 | 500 | |
| Operating Free-Air Temperature (TA) | °C | -40 | 85 | |
| Propagation Delay Time (tpd) | ns | 12 | 21 | 31 |
| Output Drive Current | mA | -6 | 6 | |
| Input Current | µA | 1 | 1 | |
| Supply Current (ICC) | µA | 8 | 80 | 160 |
Key Features
- Operating voltage range of 4.5 V to 5.5 V
- High-current 3-state outputs that can interface directly with system bus or drive up to 15 LSTTL loads
- Low power consumption with a maximum ICC of 80 µA
- Typical propagation delay time (tpd) of 12 ns
- ±6-mA output drive at 5 V
- Low input current of 1 µA max
- Inputs are TTL-voltage compatible
- Data flow-through pinout with inputs and outputs on opposite sides of the package
Applications
The SN74HCT541PWR is suitable for a variety of digital logic applications, including:
- Buffering and driving signals in digital systems
- Interface with system buses
- Driving multiple LSTTL loads
- Use in digital circuits requiring low power consumption and high-speed operation
Q & A
- What is the operating voltage range of the SN74HCT541PWR?
The operating voltage range is from 4.5 V to 5.5 V. - What is the maximum output drive current of the SN74HCT541PWR?
The maximum output drive current is ±6 mA at 5 V. - What is the typical propagation delay time (tpd) of the SN74HCT541PWR?
The typical propagation delay time is 12 ns. - How many LSTTL loads can the SN74HCT541PWR drive?
The device can drive up to 15 LSTTL loads. - What is the input current of the SN74HCT541PWR?
The input current is a maximum of 1 µA. - Are the inputs of the SN74HCT541PWR TTL-voltage compatible?
Yes, the inputs are TTL-voltage compatible. - What is the benefit of the pinout arrangement in the SN74HCT541PWR?
The pinout with inputs and outputs on opposite sides of the package greatly facilitates printed circuit board layout. - What is the recommended bypass capacitor for the power supply of the SN74HCT541PWR?
A 0.1-μF capacitor is recommended, and it is acceptable to parallel multiple bypass caps to reject different frequencies of noise. - Why should unused inputs of the SN74HCT541PWR not be left floating?
Unused inputs should not be left floating to prevent undefined operational states; they should be connected to a logic high or logic low voltage. - What is the junction-to-ambient thermal resistance for the TSSOP package of the SN74HCT541PWR?
The junction-to-ambient thermal resistance for the TSSOP package is 131.8 °C/W.
