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| Product attributes | Property Value |
| Manufacturer | onsemi |
| Product Series | 74F |
| 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 | 4.5V ~ 5.5V |
| 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 |
The MC74F646DW from onsemi is a high-speed non-inverting transceiver designed for 5V systems. Operating from 4.5V to 5.5V, it provides 3-State outputs with 15mA source and 64mA sink current capability. This single-channel (8-bit) device is ideal for bidirectional bus interfacing, memory buffering, and peripheral driving in telecommunications, industrial control, and test equipment. The 24-SOIC package offers a compact solution for space-constrained PCBs.
- High 64mA Sink Current: Drives heavy capacitive loads on long buses, improving signal integrity.
- 3-State Outputs: Enables safe bus sharing without contention, simplifying multi-device designs.
- 74F High-Speed Logic: Supports fast data rates up to 100MHz, ideal for performance-critical systems.
- Wide 4.5V-5.5V Supply: Compatible with standard 5V TTL logic, reducing power supply complexity.
Bidirectional Bus Interfacing
Use the MC74F646DW to connect two 5V data buses in microprocessor systems. The 3-State outputs prevent bus contention when multiple devices share the same lines.
Memory Address Buffering
Buffer address lines between a CPU and SRAM/DRAM. The high 64mA sink current drives capacitive loads on long PCB traces, ensuring signal integrity.
Peripheral Device Driving
Drive LEDs, relays, or other peripherals directly. The 15mA source and 64mA sink capabilities handle moderate loads without external drivers.
Telecommunications Switching
Implement line card interfaces in telecom equipment. The 74F family's speed supports high-frequency signaling up to 100MHz.
Industrial Control Logic
Interface between 5V PLC modules and backplane buses. The 0°C to 70°C temperature range suits controlled industrial environments.
Test Equipment Signal Routing
Route test signals in ATE systems. The non-inverting function preserves signal polarity, critical for accurate measurements.
- Q: What is the logic family of the MC74F646DW?
- A: The MC74F646DW belongs to the 74F logic family, offering high-speed performance for 5V systems.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver with 3-State outputs, ideal for bidirectional bus communication.
- Q: How many channels does it have?
- A: It features 1 channel (8-bit) for data transmission.
- Q: What is the output type?
- A: The outputs are 3-State, allowing connection to a shared bus without contention.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V, making it compatible with standard 5V logic.
- Q: What package is available?
- A: It comes in a 24-SOIC (0.295", 7.50mm Width) package.
MC74F646DW.pdf
- Q: What is the logic family of the MC74F646DW?
- A: The MC74F646DW belongs to the 74F logic family, offering high-speed performance for 5V systems.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver with 3-State outputs, ideal for bidirectional bus communication.
- Q: How many channels does it have?
- A: It features 1 channel (8-bit) for data transmission.
- Q: What is the output type?
- A: The outputs are 3-State, allowing connection to a shared bus without contention.
- Q: What is the operating voltage range?
- A: It operates from 4.5V to 5.5V, making it compatible with standard 5V logic.
- Q: What package is available?
- A: It comes in a 24-SOIC (0.295", 7.50mm Width) package.