| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.00 | $0.00 |
| 15+ | $0.00 | $0.00 |
| 25+ | $0.00 | $0.00 |
| 50+ | $0.00 | $0.00 |
| 100+ | $0.00 | $0.00 |
| N+ | $0.00 | Price Inquiry |
Request Quote / Inquiry
| Product attributes | Property Value |
| Manufacturer | Harris Corporation |
| Product Series | |
| 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 | Surface Mount |
| Package / Case | 24-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 24-SOIC (0.295", 7.50mm Width) |
The CD74FCT646M from Harris Corporation is a non-inverting octal bus transceiver in the 74FCT family. It operates from 4.75V to 5.25V, with 3-State outputs and 15mA source/64mA sink current capability. The 1-channel design supports bidirectional data flow in 8-bit systems. Packaged in a 24-SOIC, it is suitable for bus interfacing, memory control, and industrial applications.
- High Sink Current (64mA): Drives heavy loads and multiple fan-outs, ensuring reliable bus operation.
- Bidirectional Operation: Reduces component count by combining two buffers into one transceiver.
- 3-State Outputs: Prevents bus contention in multi-device systems, improving reliability.
- 74FCT High-Speed Family: Offers faster propagation delays compared to older 74LS/74ALS families.
Bus Transceiver for 5V Systems
Use the CD74FCT646M to interface between two 5V buses. The 64mA sink current ensures robust signal drive for long traces.
Memory Read/Write Buffering
Connect a CPU to memory devices. The transceiver direction control simplifies read/write operations, reducing external logic.
Peripheral Device Interfacing
Buffer signals to printers, displays, or other peripherals. The 3-State outputs allow the CPU to disconnect from the peripheral when not in use.
Industrial Control Systems
Interface PLCs with sensors and actuators. The high sink current can drive optocouplers or small relays directly.
Test and Measurement Equipment
Route signals between test instruments and DUTs. The fast propagation delay of the 74FCT family preserves signal timing.
Legacy System Upgrades
Replace older 74LS or 74ALS transceivers with the CD74FCT646M for improved speed and lower power consumption.
- Q: What is the logic family of the CD74FCT646M?
- A: It is from the 74FCT logic family, offering high-speed performance.
- Q: What function does this IC perform?
- A: It is a non-inverting transceiver with 1 channel, enabling bidirectional data transfer.
- Q: What type of output does it have?
- A: It features 3-State outputs for bus isolation.
- Q: What is the voltage range?
- A: It operates from 4.75V to 5.25V, compatible with 5V systems.
- Q: What are the current ratings?
- A: It can source 15mA and sink 64mA, providing strong drive capability.
- Q: What package is it available in?
- A: It comes in a 24-SOIC (0.295", 7.50mm Width) package.
CD74FCT646M.pdf
- Q: What is the logic family of the CD74FCT646M?
- A: It is from the 74FCT logic family, offering high-speed performance.
- Q: What function does this IC perform?
- A: It is a non-inverting transceiver with 1 channel, enabling bidirectional data transfer.
- Q: What type of output does it have?
- A: It features 3-State outputs for bus isolation.
- Q: What is the voltage range?
- A: It operates from 4.75V to 5.25V, compatible with 5V systems.
- Q: What are the current ratings?
- A: It can source 15mA and sink 64mA, providing strong drive capability.
- Q: What package is it available in?
- A: It comes in a 24-SOIC (0.295", 7.50mm Width) package.