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| Product attributes | Property Value |
| Manufacturer | Fairchild Semiconductor |
| Product Series | 74HC |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 7.8mA, 7.8mA |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-SOIC (0.209", 5.30mm Width) |
| Supplier Device Package | 20-SOP |
| ROHS |  |
The MM74HC244SJX is a non-inverting buffer from Fairchild Semiconductor, part of the 74HC logic family. It features two channels with 3-State outputs, capable of sourcing or sinking 7.8mA. Operating from a 2V to 6V supply, it is versatile for both 3.3V and 5V systems. This buffer is commonly used in microcontroller output buffering, memory address driving, and LED multiplexing. Its 20-SOIC package is ideal for compact PCB designs.
- Wide Supply Range (2V-6V): Compatible with both 3.3V and 5V systems, simplifying design across different platforms.
- 3-State Outputs: Provides bus isolation and multiplexing capability, enhancing system flexibility.
- High Output Current (7.8mA): Can directly drive LEDs and other low-power loads, reducing component count.
- Low Power Consumption: CMOS technology ensures minimal power draw, ideal for battery-operated devices.
Multi-Voltage System Buffering
The wide 2V to 6V supply range allows the MM74HC244 to be used in both 3.3V and 5V systems, making it a versatile choice for mixed-voltage designs.
Microcontroller Output Buffering
It can buffer the output pins of a microcontroller, providing additional drive strength and protecting the MCU from external loads. The 3-State feature allows the MCU to release the bus when needed.
Memory Address Line Driving
In systems with multiple memory chips, this buffer can drive address lines to multiple devices, ensuring signal integrity and reducing loading on the memory controller.
LED Display Multiplexing
With 7.8mA output current, it can drive segments of an LED display in a multiplexed configuration, with the 3-State outputs allowing for efficient scanning.
Battery-Powered Devices
The low-voltage operation (down to 2V) makes it suitable for battery-powered applications, where power consumption is critical.
Industrial Control Signal Conditioning
In industrial environments, the buffer can condition and isolate control signals from sensors and switches, providing a clean interface to a PLC or control system.
- Q: What is the logic family of the MM74HC244SJX?
- A: It belongs to the 74HC family, which is a high-speed CMOS logic family with standard CMOS inputs.
- Q: What is the function of this IC?
- A: It is a non-inverting buffer with 2 channels, used to strengthen and isolate digital signals.
- Q: What is the output type?
- A: It has 3-State outputs, allowing the outputs to be disabled for bus-oriented applications.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V, making it versatile for both 3.3V and 5V systems.
- Q: What is the output current capability?
- A: It can source or sink 7.8mA per output, suitable for driving logic inputs and small loads.
- Q: What package is available?
- A: It is available in a 20-SOIC (0.209", 5.30mm Width) package for surface-mount assembly.
MM74HC244SJX.pdf
- Q: What is the logic family of the MM74HC244SJX?
- A: It belongs to the 74HC family, which is a high-speed CMOS logic family with standard CMOS inputs.
- Q: What is the function of this IC?
- A: It is a non-inverting buffer with 2 channels, used to strengthen and isolate digital signals.
- Q: What is the output type?
- A: It has 3-State outputs, allowing the outputs to be disabled for bus-oriented applications.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V, making it versatile for both 3.3V and 5V systems.
- Q: What is the output current capability?
- A: It can source or sink 7.8mA per output, suitable for driving logic inputs and small loads.
- Q: What package is available?
- A: It is available in a 20-SOIC (0.209", 5.30mm Width) package for surface-mount assembly.