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| Product attributes | Property Value |
| Manufacturer | Harris Corporation |
| Product Series | 54HC |
| 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 | 7.8mA, 7.8mA |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | 20-CDIP (0.300", 7.62mm) |
| Supplier Device Package | 20-CERDIP |
The CD54HC643F3A is a high-reliability 8-bit non-inverting transceiver from Harris Corporation, part of the 54HC logic family. It features 3-State outputs and operates from 2V to 6V, making it versatile for various supply voltages. With 7.8mA output drive, it is designed for moderate-speed bus applications. The device is packaged in a 20-CDIP ceramic package, offering excellent thermal and mechanical stability. Its extended temperature range (-55°C to 125°C) makes it ideal for military, aerospace, and industrial applications where reliability is paramount.
- Extreme Temperature Range (-55°C to 125°C): Suitable for military and aerospace applications.
- Wide Supply Voltage (2V-6V): Compatible with multiple logic levels, reducing design complexity.
- Ceramic DIP Package: Provides superior hermetic sealing and mechanical strength.
- 3-State Outputs: Enables bus sharing in redundant systems.
Military Avionics Data Bus
Use the CD54HC643F3A in avionics systems for bidirectional data transfer between flight control computers. Its -55°C to 125°C range meets MIL-STD requirements.
Space-Grade Telemetry
In satellite telemetry systems, this transceiver buffers data between redundant processors. The wide voltage range allows operation from unregulated power supplies.
Industrial Process Control
Interface between 5V sensors and 3.3V controllers in harsh industrial environments. The 7.8mA output current is sufficient for short-distance signal transmission.
Legacy System Integration
Bridge between old 5V TTL systems and modern CMOS logic. The 54HC family's wide voltage tolerance simplifies level matching.
High-Reliability Medical Implants
Use in implantable devices where extreme temperature and reliability are critical. The ceramic DIP package provides excellent hermetic sealing.
Test Equipment for Extreme Environments
In oil and gas exploration tools, this transceiver operates reliably at high temperatures downhole.
- Q: What is the logic family of the CD54HC643F3A?
- A: It belongs to the 54HC family, which is the high-speed CMOS logic family with wide voltage range.
- Q: What function does this IC perform?
- A: It is a single 8-bit non-inverting transceiver with 3-State outputs.
- Q: How many channels does it have?
- A: It has 1 channel, 8 bits wide, for bidirectional data transfer.
- Q: What is the output type?
- A: It features 3-State outputs for bus-oriented applications.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V, compatible with both 3.3V and 5V systems.
- Q: What is the temperature range?
- A: It is rated for -55°C to 125°C, suitable for military and aerospace applications.
CD54HC643F3A.pdf
- Q: What is the logic family of the CD54HC643F3A?
- A: It belongs to the 54HC family, which is the high-speed CMOS logic family with wide voltage range.
- Q: What function does this IC perform?
- A: It is a single 8-bit non-inverting transceiver with 3-State outputs.
- Q: How many channels does it have?
- A: It has 1 channel, 8 bits wide, for bidirectional data transfer.
- Q: What is the output type?
- A: It features 3-State outputs for bus-oriented applications.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V, compatible with both 3.3V and 5V systems.
- Q: What is the temperature range?
- A: It is rated for -55°C to 125°C, suitable for military and aerospace applications.