Overview
The MC74AC244/74ACT244, produced by onsemi, is an octal buffer and line driver designed to enhance the efficiency and density of printed circuit boards (PCBs). This component is versatile and can be employed as a memory address driver, clock driver, and bus-oriented transmitter/receiver. It is particularly useful in applications where improved signal integrity and reduced noise are crucial.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| VCC (DC Supply Voltage) | −0.5 to +6.5 | V | Referenced to GND |
| VIN (DC Input Voltage) | −0.5 to VCC +0.5 | V | Referenced to GND |
| VOUT (DC Output Voltage) | −0.5 to VCC +0.5 | V | Referenced to GND |
| VIH (Minimum High Level Input Voltage) | 2.0 to 5.5 | V | VCC = 3.0 to 5.5 V |
| VIL (Maximum Low Level Input Voltage) | 0.8 to 1.65 | V | VCC = 3.0 to 5.5 V |
| VOH (Minimum High Level Output Voltage) | 2.99 to 5.49 | V | IOUT = −50 μA |
| IOUT (DC Output Sink/Source Current) | ±50 | mA | |
| TSTG (Storage Temperature Range) | −65 to +150 | °C | |
| TJ (Junction Temperature Under Bias) | 140 | °C |
Key Features
- 3-State Outputs: Capable of driving bus lines or buffering memory address registers with high impedance state.
- Output Current: Outputs can source/sink up to 24 mA.
- TTL Compatibility: The MC74ACT244 version has TTL compatible inputs.
- Pb-Free Devices: These components are lead-free, making them environmentally friendly.
Applications
The MC74AC244/74ACT244 is suitable for various applications, including:
- Memory Address Drivers: Enhancing the performance of memory address lines.
- Clock Drivers: Driving clock signals with high fidelity.
- Bus-Oriented Transmitter/Receiver: Improving signal integrity in bus-oriented systems.
- General Logic Circuits: Used in any application requiring high-speed, low-power logic functions.
Q & A
- What is the primary function of the MC74AC244/74ACT244?
The primary function is to act as an octal buffer and line driver, suitable for memory address drivers, clock drivers, and bus-oriented transmitter/receivers.
- What are the key features of the MC74AC244/74ACT244?
Key features include 3-state outputs, the ability to source/sink up to 24 mA, TTL compatible inputs for the MC74ACT244, and lead-free construction.
- What are the typical operating voltage ranges for the MC74AC244/74ACT244?
The DC supply voltage (VCC) ranges from 2 to 6 volts.
- What is the maximum output current of the MC74AC244/74ACT244?
The outputs can source or sink up to 24 mA.
- What are the storage and operating temperature ranges for the MC74AC244/74ACT244?
The storage temperature range is −65 to +150°C, and the junction temperature under bias is up to 140°C.
- What types of packages are available for the MC74AC244/74ACT244?
The component is available in SOIC-20 and TSSOP-20 packages.
- How many channels does the MC74AC244/74ACT244 have?
It has 8 channels.
- Is the MC74AC244/74ACT244 lead-free?
- What is the significance of the 'ACT' suffix in MC74ACT244?
The 'ACT' suffix indicates that the device has TTL compatible inputs.
- Where can I find detailed ordering and shipping information for the MC74AC244/74ACT244?
Detailed ordering and shipping information can be found in the package dimensions section of the data sheet or on the onsemi website.
