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| Product attributes | Property Value |
| Manufacturer | Fairchild Semiconductor |
| Product Series | 74FR |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 2 |
| 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 | 44-LCC (J-Lead) |
| Supplier Device Package | 44-PLCC (16.51x16.51) |
The 74FR16541QC from Fairchild Semiconductor is a dual non-inverting buffer designed for high-current bus applications. Operating at 4.5V to 5.5V, it provides 64mA output drive with 3-State control. The 74FR family offers a balance of speed and drive strength. Packaged in a 44-LCC (J-Lead), it is suitable for dense PCB layouts. Ideal for memory buffering, telecommunications, and industrial control systems requiring robust signal distribution.
- High Output Current (64mA): Drives heavily loaded buses and long interconnects with ease.
- 3-State Outputs: Facilitates bus sharing and multiplexing in multi-master systems.
- J-Lead Package: Provides reliable solder joints and easier inspection compared to standard gull-wing.
- Proven 74FR Family: Combines speed and drive for demanding 5V logic applications.
High-Density Bus Driving
The 64mA output current enables driving large backplanes or multiple memory banks without additional buffering, reducing component count.
Server and Networking Equipment
In networking switches and servers, the 74FR16541QC provides robust signal distribution for address and data buses operating at 5V.
Telecommunications Line Cards
The 3-State outputs allow multiple line cards to share a common control bus, facilitating hot-swap and redundancy schemes.
Industrial PLC I/O Modules
With 0°C to 70°C operation, it suits commercial industrial controllers requiring high-current buffering for external interfaces.
Memory Subsystem Expansion
For DRAM/SRAM arrays, the non-inverting buffer isolates the memory bus from the controller, improving signal integrity at high speeds.
Test and Measurement Systems
The high drive current supports driving long coaxial cables or high-capacitance test fixtures with minimal distortion.
- Q: What logic family does the 74FR16541QC use?
- A: It belongs to the 74FR family, a Fairchild high-speed bipolar/CMOS hybrid logic series.
- Q: What is the function of this device?
- A: It is a dual-channel, non-inverting buffer with 3-State outputs for bus-oriented applications.
- Q: How many channels are included?
- A: The IC provides 2 independent buffer channels.
- Q: What is the output configuration?
- A: Outputs are 3-State, allowing high-impedance states for multiplexed bus operation.
- Q: What are the voltage and current specifications?
- A: It operates at 4.5V to 5.5V, with 15mA input and 64mA output current capability.
- Q: What package is used?
- A: It comes in a 44-LCC (J-Lead) package, suitable for surface-mount or socketed applications.
74FR16541QC.pdf
- Q: What logic family does the 74FR16541QC use?
- A: It belongs to the 74FR family, a Fairchild high-speed bipolar/CMOS hybrid logic series.
- Q: What is the function of this device?
- A: It is a dual-channel, non-inverting buffer with 3-State outputs for bus-oriented applications.
- Q: How many channels are included?
- A: The IC provides 2 independent buffer channels.
- Q: What is the output configuration?
- A: Outputs are 3-State, allowing high-impedance states for multiplexed bus operation.
- Q: What are the voltage and current specifications?
- A: It operates at 4.5V to 5.5V, with 15mA input and 64mA output current capability.
- Q: What package is used?
- A: It comes in a 44-LCC (J-Lead) package, suitable for surface-mount or socketed applications.