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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | 54ACTQ |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Transceiver, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 24mA, 24mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-CFlatPack |
| Supplier Device Package | 20-CFP |
The 54ACTQ245FMQB-R is a non-inverting transceiver from National Semiconductor, belonging to the 54ACTQ logic family. It features a single bidirectional channel with 3-state outputs, capable of sourcing and sinking 24mA. Operating from a 4.5V to 5.5V supply, it is designed for high-speed, bidirectional bus interfacing. Packaged in a 20-pin CFlatPack, it operates over the military temperature range of -55°C to 125°C, ensuring reliability in extreme conditions.
- Bidirectional Capability: Reduces component count by replacing separate buffers and receivers with a single IC.
- High Drive Current (24mA): Ensures robust signal transmission on long or heavily loaded buses.
- 3-State Outputs: Provides essential bus isolation and sharing capabilities for complex digital systems.
- Military-Grade Reliability: Tested for operation over -55°C to 125°C, suitable for defense and aerospace applications.
Bidirectional Data Bus Buffering
Employ the 54ACTQ245FMQB-R to buffer a bidirectional data bus between a processor and memory or peripherals. The direction control pin simplifies read/write operations.
Bus Isolation in Multi-Board Systems
Use the 3-state outputs to isolate a board from the backplane bus when it is not selected, preventing electrical conflicts and improving system reliability.
Signal Repeater for Long Traces
Place the transceiver at the midpoint of a long, high-speed trace to regenerate the signal, overcoming attenuation and maintaining signal integrity.
Interfacing TTL and CMOS Logic
With TTL-compatible inputs and CMOS outputs, it can bridge between TTL and CMOS logic families, ensuring proper voltage levels and noise margins.
Military Avionics Data Transfer
Designed for harsh environments, this transceiver is ideal for avionics data buses where reliable bidirectional communication is critical.
Test and Measurement Equipment
Use it to route data signals in automated test equipment, allowing for flexible signal routing and isolation between different test modules.
- Q: What is the logic family of the 54ACTQ245FMQB-R?
- A: It is part of the 54ACTQ logic family, featuring advanced CMOS technology with TTL-compatible inputs.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver with one (1) channel, enabling bidirectional data transfer.
- Q: What type of output does it have?
- A: It has 3-state outputs, allowing for connection to a shared bus without causing conflicts.
- Q: What is the supply voltage range?
- A: It operates from a 4.5V to 5.5V supply, making it compatible with standard 5V systems.
- Q: What is the output current capability?
- A: It can source and sink 24mA, providing sufficient drive for bus lines and capacitive loads.
- Q: What is the operating temperature range?
- A: It is rated for the military temperature range of -55°C to 125°C.
54ACTQ245FMQB-R.pdf
- Q: What is the logic family of the 54ACTQ245FMQB-R?
- A: It is part of the 54ACTQ logic family, featuring advanced CMOS technology with TTL-compatible inputs.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver with one (1) channel, enabling bidirectional data transfer.
- Q: What type of output does it have?
- A: It has 3-state outputs, allowing for connection to a shared bus without causing conflicts.
- Q: What is the supply voltage range?
- A: It operates from a 4.5V to 5.5V supply, making it compatible with standard 5V systems.
- Q: What is the output current capability?
- A: It can source and sink 24mA, providing sufficient drive for bus lines and capacitive loads.
- Q: What is the operating temperature range?
- A: It is rated for the military temperature range of -55°C to 125°C.