Overview
The MC74HCT244ADTR2G, produced by onsemi, is an octal noninverting buffer/line driver/line receiver. It is designed to be used in 3-state memory address drivers, clock drivers, and other bus-oriented systems. This device is identical in pinout to the LS244 and can serve as a level converter for interfacing TTL or NMOS outputs to High-Speed CMOS inputs. The MC74HCT244A series, to which this component belongs, is part of the High-Performance Silicon-Gate CMOS family, offering compatibility with standard CMOS, TTL, and NMOS outputs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage (VCC) | 4.5 to 5.5 | V |
| Output Drive Capability | 15 LSTTL Loads | |
| Input Current | 1 μA | |
| Maximum Propagation Delay (A to YA or B to YB) | 20 to 30 | ns |
| Maximum Output Transition Time | 12 to 18 | ns |
| Maximum Input Capacitance | 10 | pF |
| Maximum Three-State Output Capacitance | 15 | pF |
| Operating Free-Air Temperature | -55 to +125 | °C |
| Package Type | TSSOP-20 | |
| Lead Temperature (1 mm from Case for 10 Seconds) | 260 | °C |
Key Features
- Noninverting outputs with two active-low output enables.
- Outputs directly interface to CMOS, NMOS, and TTL.
- TTL NMOS-compatible input levels.
- High noise immunity characteristic of CMOS devices.
- In compliance with the requirements defined by JEDEC Standard No. 7A.
- Pb-free, halogen-free, and RoHS compliant packages.
- AEC-Q100 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements.
Applications
The MC74HCT244ADTR2G is suitable for a variety of applications, including:
- 3-state memory address drivers.
- Clock drivers.
- Bus-oriented systems.
- Level conversion for interfacing TTL or NMOS outputs to High-Speed CMOS inputs.
- General usage in many different electronic systems requiring buffer/line driver/line receiver functions.
Q & A
- What is the primary function of the MC74HCT244ADTR2G?
The MC74HCT244ADTR2G is an octal noninverting buffer/line driver/line receiver designed for use in 3-state memory address drivers, clock drivers, and other bus-oriented systems.
- What is the operating voltage range for the MC74HCT244ADTR2G?
The operating voltage range is from 4.5 to 5.5 volts.
- What types of inputs are compatible with the MC74HCT244ADTR2G?
The device inputs are compatible with standard CMOS or TTL outputs.
- What is the output drive capability of the MC74HCT244ADTR2G?
The output drive capability is 15 LSTTL loads.
- What is the maximum propagation delay for the MC74HCT244ADTR2G?
The maximum propagation delay is between 20 to 30 nanoseconds.
- What is the package type for the MC74HCT244ADTR2G?
The package type is TSSOP-20.
- Is the MC74HCT244ADTR2G RoHS compliant?
Yes, the device is Pb-free, halogen-free, and RoHS compliant.
- What are the temperature limits for the MC74HCT244ADTR2G?
The operating free-air temperature range is from -55 to +125°C.
- Can the MC74HCT244ADTR2G be used in automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements.
- How many FETs or equivalent gates does the MC74HCT244ADTR2G contain?
The chip complexity is 136 FETs or 34 equivalent gates.
