Overview
The MC74HC244ADW, produced by onsemi, is an octal 3-state noninverting buffer/line driver/line receiver. This device is identical in pinout to the LS244 and is designed to be used with 3-state memory address drivers, clock drivers, and other bus-oriented systems. It features noninverting outputs and two active-low output enables, making it suitable for a wide range of applications, including general usage in various electronic systems.
The MC74HC244ADW is part of the High-Performance Silicon-Gate CMOS family and is compatible with standard CMOS outputs. With the addition of pullup resistors, it can also be compatible with LSTTL outputs. This versatility makes it an excellent choice for interfacing different types of logic circuits.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage (VCC) | –0.5 to +6.5 | V |
| DC Input Voltage (VIN) | –0.5 to VCC + 0.5 | V |
| DC Output Voltage (VOUT) | –0.5 to VCC + 0.5 | V |
| Operating Voltage Range | 2.0 to 6.0 V (HC), 4.5 to 5.5 V (HCT) | V |
| Minimum High-Level Input Voltage (VIH) | 1.5 to 4.2 V (depending on VCC) | V |
| Maximum Low-Level Input Voltage (VIL) | 0.5 to 1.8 V (depending on VCC) | V |
| Maximum Input Leakage Current (IIN) | ±1.0 μA | μA |
| Maximum Three-State Leakage Current (IOZ) | ±10 μA | μA |
| Maximum Quiescent Supply Current (ICC) | 4.0 to 160 μA (depending on VCC) | μA |
| Output Drive Capability | 15 LSTTL Loads | |
| Storage Temperature (TSTG) | –65 to +150 °C | °C |
Key Features
- Output Drive Capability: 15 LSTTL Loads
- Operating Voltage Range: 2.0 to 6.0 V (HC), 4.5 to 5.5 V (HCT)
- Outputs Directly Interface to CMOS, NMOS, and TTL
- Low Input Current: 1 μA
- High Noise Immunity Characteristic of CMOS Devices
- In Compliance with the Requirements Defined by JEDEC Standard No. 7A
- Chip Complexity: 136 FETs or 34 Equivalent Gates
- Pb-Free, Halogen Free, and RoHS Compliant
- AEC-Q100 Qualified and PPAP Capable for automotive and other applications requiring unique site and control change requirements
Applications
The MC74HC244ADW is versatile and can be used in various applications, including:
- 3-state memory address drivers
- Clock drivers
- Bus-oriented systems
- Interfacing TTL or NMOS outputs to High-Speed CMOS inputs
- General logic circuits requiring noninverting buffers and line drivers
- Automotive, industrial, and consumer electronics where high reliability and compliance with automotive standards are necessary
Q & A
- What is the operating voltage range of the MC74HC244ADW?
The operating voltage range is 2.0 to 6.0 V for the HC version and 4.5 to 5.5 V for the HCT version.
- What types of logic circuits can the MC74HC244ADW interface with?
The device can directly interface with CMOS, NMOS, and TTL logic circuits.
- What is the output drive capability of the MC74HC244ADW?
The output drive capability is 15 LSTTL loads.
- Is the MC74HC244ADW compatible with automotive standards?
- What is the maximum input leakage current of the MC74HC244ADW?
The maximum input leakage current is ±1.0 μA.
- What is the storage temperature range for the MC74HC244ADW?
The storage temperature range is –65 to +150 °C.
- Is the MC74HC244ADW Pb-Free and RoHS Compliant?
- What are the typical applications of the MC74HC244ADW?
- How many FETs or equivalent gates are in the MC74HC244ADW?
- What is the purpose of the output enables in the MC74HC244ADW?
