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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | 74FCT |
| 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 | 15mA, 64mA |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | 24-CDIP |
| Supplier Device Package | 24-CDIP |
The 74FCT543ASC is a single-channel, non-inverting transceiver from National Semiconductor. It operates from a 4.75V to 5.25V supply and features 3-State outputs with 15mA source and 64mA sink capability. Housed in a 24-CDIP package, it is designed for high-drive bus interfacing in 5V TTL systems, offering excellent signal integrity for demanding applications.
- High 64mA Sink Current: Provides excellent drive strength for heavily loaded buses and long traces.
- TTL-Compatible Inputs: Ensures seamless integration with existing 5V TTL logic designs.
- 3-State Outputs: Allows for bus sharing and multiplexing in complex systems.
- Non-Inverting Function: Preserves signal polarity, simplifying logic design.
High-Drive Bus Transceiver
With 64mA sink capability, the 74FCT543ASC can drive long bus lines and multiple loads, making it suitable for backplane applications in servers and workstations.
5V TTL-Compatible Interfacing
Its 4.75V-5.25V supply range and TTL-compatible inputs make it a drop-in solution for interfacing with legacy 5V TTL logic.
Bidirectional Data Buffering
In microprocessor systems, it can buffer the data bus between the CPU and memory or I/O devices, ensuring signal integrity.
3-State Bus Isolation
The 3-State outputs allow the transceiver to be disconnected from the bus, enabling multiple devices to share the same data lines.
Industrial Control Systems
In industrial controllers, this transceiver can buffer signals to and from field devices, providing robust communication in harsh environments.
- Q: What is the logic family of the 74FCT543ASC?
- A: It belongs to the 74FCT (Fast CMOS TTL-compatible) family, offering high speed with low power consumption.
- Q: What is the function of this IC?
- A: It is a single-channel, non-inverting transceiver for bidirectional data transfer between two buses.
- Q: What type of output does it have?
- A: It features 3-State outputs, allowing the device to be placed in a high-impedance state for bus sharing.
- Q: What is the operating voltage range?
- A: The recommended supply voltage is 4.75V to 5.25V, making it ideal for standard 5V TTL systems.
- Q: What is the package type?
- A: It is available in a 24-CDIP (Ceramic Dual In-line Package) for through-hole mounting.
- Q: What is the output current capability?
- A: It can source 15mA and sink 64mA, providing strong drive for bus lines.
74FCT543ASC.pdf
- Q: What is the logic family of the 74FCT543ASC?
- A: It belongs to the 74FCT (Fast CMOS TTL-compatible) family, offering high speed with low power consumption.
- Q: What is the function of this IC?
- A: It is a single-channel, non-inverting transceiver for bidirectional data transfer between two buses.
- Q: What type of output does it have?
- A: It features 3-State outputs, allowing the device to be placed in a high-impedance state for bus sharing.
- Q: What is the operating voltage range?
- A: The recommended supply voltage is 4.75V to 5.25V, making it ideal for standard 5V TTL systems.
- Q: What is the package type?
- A: It is available in a 24-CDIP (Ceramic Dual In-line Package) for through-hole mounting.
- Q: What is the output current capability?
- A: It can source 15mA and sink 64mA, providing strong drive for bus lines.