Overview
The MC74HCT541ADWR2 is an octal 3-state noninverting buffer/line driver/line receiver produced by onsemi. This device is part of the HC/T series of high-speed CMOS logic and is designed to be used in various bus-oriented systems, including 3-state memory address drivers, clock drivers, and other similar applications. The MC74HCT541A is identical in pinout to the LS541 and is compatible with Standard CMOS outputs, as well as LSTTL outputs when external pull-up resistors are used. It can also serve as a level converter for interfacing TTL or NMOS outputs to high-speed CMOS inputs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage (VCC) | 4.5 to 5.5 | V |
| DC Input Voltage (VIN) | 0 to VCC + 0.5 | V |
| DC Output Voltage (VOUT) | 0 to VCC + 0.5 | V |
| Operating Free-Air Temperature | -55 to +125 | °C |
| Input Rise or Fall Time | 0 to 500 | ns |
| Maximum Propagation Delay (tPLH, tPHL) | 23 to 32 | ns |
| Maximum Output Transition Time (tTLH, tTHL) | 6 ns | ns |
| Output Drive Capability | 15 LSTTL Loads | |
| Low Input Current | 1 μA | |
| High Noise Immunity | Characteristic of CMOS Devices | |
| Package Type | SOIC-20 Wide |
Key Features
- Octal noninverting buffer/line driver/line receiver with 3-state outputs.
- Inputs and outputs on opposite sides of the package for easy interface.
- Two ANDed active-low output enables (OE1, OE2).
- Output drive capability of 15 LSTTL loads.
- Directly interfaces to CMOS, NMOS, and TTL.
- Low input current of 1 μA.
- High noise immunity characteristic of CMOS devices.
- In compliance with JEDEC Standard No. 7A requirements.
- Pb-free and RoHS compliant.
- AEC-Q100 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements.
Applications
- 3-state memory address drivers.
- Clock drivers.
- Bus-oriented systems.
- Level conversion for interfacing TTL or NMOS outputs to high-speed CMOS inputs.
- Automotive and industrial control systems.
- High-speed digital logic circuits.
Q & A
- What is the operating voltage range of the MC74HCT541ADWR2?
The operating voltage range is 4.5 to 5.5 volts.
- What is the maximum propagation delay for the MC74HCT541ADWR2?
The maximum propagation delay (tPLH, tPHL) is between 23 to 32 nanoseconds.
- How many LSTTL loads can the MC74HCT541ADWR2 drive?
The device can drive up to 15 LSTTL loads.
- Is the MC74HCT541ADWR2 compatible with CMOS, NMOS, and TTL outputs?
- What is the input current of the MC74HCT541ADWR2?
The low input current is 1 μA.
- Is the MC74HCT541ADWR2 Pb-free and RoHS compliant?
- What are the typical applications of the MC74HCT541ADWR2?
Typical applications include 3-state memory address drivers, clock drivers, bus-oriented systems, and level conversion for TTL or NMOS to CMOS interfaces.
- What package types are available for the MC74HCT541ADWR2?
The device is available in SOIC-20 Wide packages.
- Is the MC74HCT541ADWR2 suitable for automotive applications?
- How do the output enables (OE1, OE2) function on the MC74HCT541ADWR2?
The outputs are enabled when a low voltage is applied to both OE1 and OE2. When a high voltage is applied to either input, the outputs assume the high impedance state.
