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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | 54HC |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 4 |
| Number of Bits per Element | 1 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | - |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-CLCC |
| Supplier Device Package | 20-LCCC (8.89x8.89) |
The MM54HC126E/883 is a quad non-inverting buffer from National Semiconductor, featuring 3-State outputs. It operates over a wide supply voltage range of 2V to 6V, providing flexibility for both 3.3V and 5V systems. Each of the four channels can drive significant capacitive loads, making it suitable for bus interfacing and signal buffering. Packaged in a 20-CLCC ceramic package, it is designed for military and aerospace applications with a temperature range of -55°C to 125°C. Its high noise immunity and low power consumption are hallmarks of the 54HC logic family.
- Wide 2V to 6V Supply Range: Supports both 3.3V and 5V logic systems, simplifying mixed-voltage designs.
- Quad Independent Buffers: Provides four separate buffering paths in one package, saving board space.
- 3-State Outputs: Enables bus sharing and isolation, critical for multiplexed systems.
- Military Temperature Range: Guarantees operation in extreme environments, suitable for defense applications.
Military Avionics Data Bus Buffering
Buffer MIL-STD-1553 data bus signals. The 54HC family's wide 2V-6V range and ceramic package ensure reliable operation in harsh avionics environments.
High-Impedance Isolation
Use the 3-State outputs to disconnect a peripheral from a microcontroller bus when not in use, preventing loading effects and reducing power consumption.
Driving High-Capacitance Loads
In test equipment, this buffer can drive long coaxial cables or high-capacitance inputs without signal degradation, thanks to its CMOS high-drive capability.
Spacecraft Telemetry Systems
With a -55°C to 125°C range and hermetic CLCC package, it is ideal for satellite telemetry and command subsystems where radiation and temperature extremes are common.
Industrial Sensor Interfacing
Buffer signals from temperature or pressure sensors to an ADC. The non-inverting function preserves sensor polarity, and 3-State outputs allow multiplexing multiple sensors.
Redundant Power Supply Control
Use the buffers to enable/disable power supply modules. The 3-State feature allows a single control line to manage multiple supplies safely.
- Q: What is the logic family of the MM54HC126E/883?
- A: It belongs to the 54HC family, which is a high-speed CMOS logic family.
- Q: What is the function of this IC?
- A: It is a non-inverting buffer with 3-State outputs, used to drive loads or isolate circuits.
- Q: How many channels are available?
- A: It contains 4 independent buffer channels.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V, making it versatile for various supply levels.
- Q: What package is this device offered in?
- A: It is available in a 20-CLCC (Ceramic Leadless Chip Carrier) package.
- Q: What temperature range does it support?
- A: It is specified for -55°C to 125°C, suitable for military applications.
MM54HC126E/883.pdf
- Q: What is the logic family of the MM54HC126E/883?
- A: It belongs to the 54HC family, which is a high-speed CMOS logic family.
- Q: What is the function of this IC?
- A: It is a non-inverting buffer with 3-State outputs, used to drive loads or isolate circuits.
- Q: How many channels are available?
- A: It contains 4 independent buffer channels.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V, making it versatile for various supply levels.
- Q: What package is this device offered in?
- A: It is available in a 20-CLCC (Ceramic Leadless Chip Carrier) package.
- Q: What temperature range does it support?
- A: It is specified for -55°C to 125°C, suitable for military applications.