Overview
The CD74HCT541M96G4, produced by Texas Instruments, is a High-Speed CMOS Logic Octal Buffer and Line Driver with Three-State Outputs. This component is part of the 'HCT541 series, which includes non-inverting buffers. It is designed to provide high-speed data transmission and bus line driving capabilities, making it suitable for a variety of digital logic applications.
The device features buffered inputs and three-state outputs, which can be controlled by two output enable pins (OE1 and OE2). When either OE1 or OE2 is high, the outputs enter a high impedance state, allowing for flexible control over data output.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | 4.5 | 5.5 | V | ||
| Propagation Delay (tPLH, tPHL) | CL = 15 pF, VCC = 5 V, TA = 25°C | 9 | 12 | ns | |
| Output Transition Time (tTHL, tTLH) | CL = 50 pF | 12 | 18 | ns | |
| Input Leakage Current (II) | VI = VCC or GND | ±1 | μA | ||
| Quiescent Device Current (ICC) | VI = VCC or GND | 80 | 160 | μA | |
| Three-State Leakage Current (IOZ) | VO = VCC or GND | ±10 | μA | ||
| Operating Temperature Range | -55 | 125 | °C | ||
| Maximum Junction Temperature | 150 | °C |
Key Features
- Non-Inverting Octal Buffers and Line Drivers: The CD74HCT541M96G4 is a non-inverting buffer, meaning the output follows the input without inversion.
- Three-State Outputs: The outputs can be set to a high impedance state when either of the output enable pins (OE1 or OE2) is high.
- Buffered Inputs: Inputs are buffered to improve signal integrity and reduce noise.
- Bus Line Driving Capability: Capable of driving up to 15 LSTTL loads, making it suitable for bus line applications.
- Wide Operating Temperature Range: Operates from -55°C to 125°C, ensuring reliability in various environmental conditions.
- Balanced Propagation Delay and Transition Times: Ensures consistent and balanced signal propagation and transition times.
- Significant Power Reduction: Compared to LSTTL logic ICs, these devices offer reduced power consumption.
- High Noise Immunity: Offers high noise immunity with NIL = 30% and NIH = 30% of VCC at VCC = 5 V.
- LSTTL Input Compatibility: Direct LSTTL input logic compatibility with VIL = 0.8 V (max) and VIH = 2 V (min).
Applications
- Digital Logic Circuits: Ideal for use in digital logic circuits where non-inverting buffering and line driving are required.
- Bus Systems: Suitable for bus systems due to its ability to drive multiple LSTTL loads.
- Embedded Systems: Used in embedded systems where reliable and high-speed data transmission is necessary.
- Industrial Control Systems: Applicable in industrial control systems that require robust and reliable logic components.
- Automotive Electronics: Can be used in automotive electronics due to its wide operating temperature range and high reliability.
Q & A
- What is the primary function of the CD74HCT541M96G4?
The CD74HCT541M96G4 is a non-inverting octal buffer and line driver with three-state outputs.
- What is the operating voltage range for the CD74HCT541M96G4?
The operating voltage range is from 4.5 V to 5.5 V.
- How many LSTTL loads can the CD74HCT541M96G4 drive?
The device can drive up to 15 LSTTL loads.
- What is the typical propagation delay of the CD74HCT541M96G4?
The typical propagation delay is 9 ns at VCC = 5 V, CL = 15 pF, and TA = 25°C.
- How do the output enable pins (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 maximum junction temperature for the CD74HCT541M96G4?
The maximum junction temperature is 150°C.
- What is the recommended bypass capacitor for the power supply?
A 0.1-μF capacitor is recommended, and it is acceptable to parallel multiple bypass capacitors to reject different frequencies of noise.
- What is the input leakage current specification for the CD74HCT541M96G4?
The input leakage current is ±1 μA when VI = VCC or GND.
- What are the key features of the 'HCT' series compared to 'HC' series?
The 'HCT' series offers direct LSTTL input logic compatibility and operates within a narrower voltage range (4.5 V to 5.5 V) compared to the 'HC' series (2 V to 6 V).
- In what types of applications is the CD74HCT541M96G4 commonly used?
It is commonly used in digital logic circuits, bus systems, embedded systems, industrial control systems, and automotive electronics.
- What is the significance of the three-state output capability?
The three-state output capability allows the outputs to be set to a high impedance state, which is useful for controlling data flow and preventing bus contention.
