Overview
The CD74HC541M96 is a high-speed CMOS logic octal buffer and line driver produced by Texas Instruments. This component is part of the CD74HC541 series, which includes non-inverting octal buffers with three-state outputs. It is designed to operate over a wide voltage range and is suitable for various digital logic applications.
The device features buffered inputs, three-state outputs, and the capability to drive multiple LSTTL loads, making it versatile for bus line driving and other high-fanout applications. It also offers significant power reduction compared to LSTTL logic ICs and high noise immunity.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Package | SOIC (DW) | - | - |
| Pins | 20 | - | - |
| Operating Temperature Range | -55 to 125 | °C | - |
| Supply Voltage (VCC) | 2 to 6 | V | HC types |
| Supply Voltage (VCC) | 4.5 to 5.5 | V | HCT types |
| Typical Propagation Delay | 9 ns | - | VCC = 5 V, CL = 15 pF, TA = 25°C |
| Fanout (Standard Outputs) | 10 LSTTL loads | - | - |
| Fanout (Bus Driver Outputs) | 15 LSTTL loads | - | - |
| Input Leakage Current | ±1 μA | - | VI = VCC or GND |
| Quiescent Device Current | 8 to 160 μA | - | VI = VCC or GND |
| Three-State Leakage Current | ±10 μA | - | VO = VCC or GND |
Key Features
- Non-Inverting Octal Buffers and Line Drivers: The CD74HC541M96 features non-inverting buffers, making it suitable for applications where signal integrity needs to be maintained without inversion.
- Three-State Outputs: The outputs can be placed in a high impedance state, controlled by the Output Enables (OE1 and OE2), which is useful for bus line driving and multiplexing applications.
- Buffered Inputs: Buffered inputs help in reducing the load on the input signals, ensuring reliable operation.
- Wide Operating Temperature Range: The device operates over a temperature range of -55°C to 125°C, making it suitable for harsh environmental conditions.
- High Noise Immunity: The device has high noise immunity, with input thresholds set at 30% and 70% of VCC, ensuring reliable operation in noisy environments.
- Low Power Consumption: Significant power reduction compared to LSTTL logic ICs, making it energy-efficient.
- Balanced Propagation Delay and Transition Times: Ensures consistent and reliable signal propagation.
Applications
- Bus Line Driving: The CD74HC541M96 is capable of driving multiple LSTTL loads, making it ideal for bus line driving applications.
- Digital Logic Circuits: Suitable for use in various digital logic circuits where non-inverting buffers and line drivers are required.
- Industrial Control Systems: The wide operating temperature range and high noise immunity make it suitable for industrial control systems.
- Embedded Systems: Can be used in embedded systems where reliable and efficient signal buffering is necessary.
Q & A
- What is the operating temperature range of the CD74HC541M96?
The operating temperature range is -55°C to 125°C.
- What is the typical propagation delay of the CD74HC541M96?
The typical propagation delay is 9 ns at VCC = 5 V, CL = 15 pF, and TA = 25°C.
- How many LSTTL loads can the CD74HC541M96 drive?
The device can drive up to 15 LSTTL loads.
- What is the supply voltage range for the HC types of this device?
The supply voltage range for HC types is 2 V to 6 V.
- What is the supply voltage range for the HCT types of this device?
The supply voltage range for HCT types is 4.5 V to 5.5 V.
- How do the Output Enables (OE1 and OE2) control the outputs?
If either OE1 or OE2 is HIGH, the outputs will be in the high impedance state. For data output, both OE1 and OE2 must be LOW.
- What is the input leakage current of the CD74HC541M96?
The input leakage current is ±1 μA when VI = VCC or GND.
- What is the quiescent device current of the CD74HC541M96?
The quiescent device current ranges from 8 μA to 160 μA when VI = VCC or GND.
- What are the key applications of the CD74HC541M96?
The device is suitable for bus line driving, digital logic circuits, industrial control systems, and embedded systems.
- How does the device handle unused input pins?
Unused input pins must be connected to a logic high or logic low voltage to prevent them from floating and ensuring defined operational states.
