Overview
The MC74HCT244ADWR2G is an octal 3-state noninverting buffer/line driver/line receiver produced by onsemi. This device is part of the 74HCT series, which is compatible with standard CMOS or TTL outputs, making it versatile for various digital circuit applications. The MC74HCT244A is designed to be used in 3-state memory address drivers, clock drivers, and other bus-oriented systems. It features noninverting outputs and two active-low output enables, allowing for efficient control over output states.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage (VCC) | 4.5 to 5.5 | V |
| DC Input Voltage (VIN) | –0.5 to VCC + 0.5 | V |
| DC Output Voltage (VOUT) | –0.5 to VCC + 0.5 | V |
| Maximum High-Level Input Voltage (VIH) | 2.0 | V |
| Maximum Low-Level Input Voltage (VIL) | 0.8 | V |
| Minimum High-Level Output Voltage (VOH) | 4.4 (at VCC = 4.5V, IOUT = 20μA) | V |
| Maximum Low-Level Output Voltage (VOL) | 0.1 (at VCC = 4.5V, IOUT = 20μA) | V |
| Maximum Input Leakage Current (IIN) | ±1.0 μA | μA |
| Maximum Three-State Leakage Current (IOZ) | ±10 μA | μA |
| Maximum Propagation Delay (tPLH, tPHL) | 20 to 30 ns (at VCC = 4.5 to 5.5V) | ns |
| Operating Free-Air Temperature (TA) | –55 to +125 °C | °C |
| Storage Temperature (TSTG) | –65 to +150 °C | °C |
Key Features
- Output Drive Capability: Can drive up to 15 LSTTL loads.
- Compatibility: Inputs compatible with standard CMOS or TTL outputs.
- Operating Voltage Range: 4.5 to 5.5 V for HCT series.
- Low Input Current: Maximum of 1 μA.
- High Noise Immunity: Characteristic of CMOS devices.
- Compliance: Meets JEDEC Standard No. 7A requirements.
- Chip Complexity: 136 FETs or 34 equivalent gates.
- AEC-Q100 Qualified and PPAP Capable for automotive and other applications requiring unique site and control change requirements.
- Pb-Free, Halogen Free, and RoHS Compliant.
Applications
The MC74HCT244ADWR2G 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.
- Automotive and industrial control systems due to its AEC-Q100 qualification.
Q & A
- What is the operating voltage range for the MC74HCT244ADWR2G?
The operating voltage range is 4.5 to 5.5 V.
- What is the maximum propagation delay for this device?
The maximum propagation delay is 20 to 30 ns at VCC = 4.5 to 5.5 V.
- Is the MC74HCT244ADWR2G compatible with TTL outputs?
- What is the maximum input leakage current?
The maximum input leakage current is ±1.0 μA.
- Can the MC74HCT244ADWR2G be used in automotive applications?
- What is the storage temperature range for this device?
The storage temperature range is –65 to +150 °C.
- How many LSTTL loads can the MC74HCT244ADWR2G drive?
- Is the MC74HCT244ADWR2G RoHS compliant?
- What are the output enable conditions for the MC74HCT244ADWR2G?
- What is the maximum three-state leakage current for this device?
