Overview
The CD74HC541M96G4 is a non-inverting octal buffer and line driver produced by Texas Instruments. This component is part of the HC (High-Speed CMOS Logic) family and is known for its high-speed operation and low power consumption. The device features three-state outputs, which can be controlled by two output enable inputs (OE1 and OE2), allowing the outputs to be in a high impedance state when either OE1 or OE2 is high. This makes it suitable for bus line driving and other applications requiring high fanout capability.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC Operating Voltage | 2 | 6 | V | ||
| Propagation Delay (Data to Outputs) | CL = 15 pF, VCC = 5 V, TA = 25℃ | 9 | 11 | ns | |
| Output Transition Time | CL = 50 pF, VCC = 4.5 V | 12 | 15 | 18 | ns |
| Input Leakage Current | VI = VCC or GND, VCC = 5.5 V | ±0.1 | ±1 | μA | |
| Quiescent Device Current | VI = VCC or GND, VCC = 5.5 V | 8 | 160 | μA | |
| Three-State Leakage Current | VO = VCC or GND, VCC = 5.5 V | ±0.5 | ±10 | μA | |
| Operating Temperature Range | -55 | 125 | ℃ | ||
| Package Type | SOIC (20 pins) | ||||
| Body Size (Nominal) | 12.80 mm × 7.50 mm |
Key Features
- Non-inverting Octal Buffer and Line Driver: The CD74HC541M96G4 is a non-inverting buffer, meaning the output follows the input without inversion.
- Three-State Outputs: The device has three-state outputs controlled by two output enable inputs (OE1 and OE2), allowing the outputs to be in a high impedance state when either OE1 or OE2 is high.
- High Fanout Capability: Can drive up to 15 LSTTL loads, making it suitable for bus line driving applications.
- Wide Operating Temperature Range: Operates from -55℃ to 125℃.
- Low Power Consumption: Significant power reduction compared to LSTTL logic ICs.
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5 V for HC types.
- Direct LSTTL Input Logic Compatibility: For HCT types, VIL = 0.8 V (max), VIH = 2 V (min).
Applications
- Bus Line Driving: The high fanout capability makes it ideal for driving multiple loads on a bus line.
- Digital Logic Circuits: Suitable for use in various digital logic circuits requiring buffering and line driving.
- Embedded Systems: Can be used in embedded systems where low power consumption and high-speed operation are critical.
- Industrial Control Systems: Applicable in industrial control systems due to its wide operating temperature range.
Q & A
- What is the CD74HC541M96G4 used for?
The CD74HC541M96G4 is used as a non-inverting octal buffer and line driver, suitable for applications requiring high fanout capability and low power consumption.
- What is the operating voltage range of the CD74HC541M96G4?
The operating voltage range is from 2 V to 6 V.
- How many LSTTL loads can the CD74HC541M96G4 drive?
The device can drive up to 15 LSTTL loads.
- What is the propagation delay of the CD74HC541M96G4?
The propagation delay is approximately 9 ns at VCC = 5 V, CL = 15 pF, and TA = 25℃.
- What is the operating temperature range of the CD74HC541M96G4?
The device operates from -55℃ to 125℃.
- What type of package does the CD74HC541M96G4 come in?
The device comes in a SOIC (20 pins) package.
- How do the output enable inputs (OE1 and OE2) control the outputs?
The outputs are in a high impedance state when either OE1 or OE2 is high. For data output, both OE1 and OE2 must be low.
- Is the CD74HC541M96G4 compatible with LSTTL logic?
Yes, the HCT types are directly compatible with LSTTL input logic.
- 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.
- Why should unused inputs 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 as defined by the input voltage specifications.
