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| Product attributes | Property Value |
| Manufacturer | Fairchild Semiconductor |
| Product Series | |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, Inverting, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 4 |
| Input Type | - |
| Output Type | - |
| Current - Output High, Low | 50mA, - |
| Voltage - Supply | -4.2V ~ -5.7V |
| Operating Temperature | 0°C ~ 85°C (TC) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 28-LCC (J-Lead) |
| Supplier Device Package | 28-LCC (J-Lead) |
| ROHS |  |
The 100313QC is a high-speed ECL buffer from Fairchild Semiconductor, part of the 100K logic family. It provides both inverting and non-inverting outputs from a single input, enabling flexible signal distribution in differential or single-ended configurations. Operating from a negative supply of -4.2V to -5.7V, it is designed for very high-frequency applications with propagation delays typically under 1ns. The 28-LCC (J-Lead) package is suitable for surface-mount assembly. Typical applications include clock distribution, differential signaling, and high-speed test equipment.
- Ultra-High Speed: ECL technology provides propagation delays under 1ns, essential for GHz-range signals.
- Complementary Outputs: Provides both inverting and non-inverting signals, simplifying differential designs.
- High Output Current (50mA): Drives transmission lines or multiple ECL loads directly.
- Negative Supply Operation: Compatible with standard ECL power rails (-5.2V typical).
High-Speed Clock Distribution
In telecommunications or test equipment, buffer ECL clock signals with rise times under 1ns. The complementary outputs allow differential clocking to reduce noise.
Differential Signal Buffering
Use the inverting and non-inverting outputs to drive balanced lines (e.g., twisted pair) for long-distance transmission with high noise immunity.
ECL-to-ECL Interfacing
Buffer signals between ECL logic devices (e.g., 100K series) in supercomputer or mainframe designs, maintaining signal integrity at GHz frequencies.
RF and Microwave Test Systems
In ATE (automated test equipment), buffer high-frequency reference signals to multiple test points without degradation.
Pulse Generation for Physics Experiments
In particle detectors or laser systems, buffer fast trigger pulses with minimal skew, ensuring precise timing.
Legacy ECL System Repair
For maintaining vintage ECL-based systems (e.g., old mainframes), this IC provides a direct replacement for failed buffers.
- Q: What is the logic family of the 100313QC?
- A: It is a 100K ECL (Emitter-Coupled Logic) family device, designed for very high-speed applications.
- Q: What is the function of this IC?
- A: It is a buffer with both inverting and non-inverting outputs, providing flexible signal distribution.
- Q: How many channels does it have?
- A: It has 1 channel, but with complementary outputs (Q and Q-bar) for differential signaling.
- Q: What is the output type?
- A: The outputs are standard ECL (open-emitter), requiring external pull-down resistors to the negative supply.
- Q: What is the voltage range?
- A: It operates with a negative supply of -4.2V to -5.7V, typical for ECL systems.
- Q: What package is available?
- A: It comes in a 28-LCC (J-Lead) ceramic package, suitable for high-frequency applications.
100313QC.pdf
- Q: What is the logic family of the 100313QC?
- A: It is a 100K ECL (Emitter-Coupled Logic) family device, designed for very high-speed applications.
- Q: What is the function of this IC?
- A: It is a buffer with both inverting and non-inverting outputs, providing flexible signal distribution.
- Q: How many channels does it have?
- A: It has 1 channel, but with complementary outputs (Q and Q-bar) for differential signaling.
- Q: What is the output type?
- A: The outputs are standard ECL (open-emitter), requiring external pull-down resistors to the negative supply.
- Q: What is the voltage range?
- A: It operates with a negative supply of -4.2V to -5.7V, typical for ECL systems.
- Q: What package is available?
- A: It comes in a 28-LCC (J-Lead) ceramic package, suitable for high-frequency applications.