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Specifications
SKU: 1859700
Quad Receiver RS-232 14-Pin SOP T/R
Below is the parameter table and instructions for the SN75189NSR, which is a 300-Mbps Low-Voltage Differential Signaling (LVDS) Line Driver.
SN75189NSR Parameter Table
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 2.2 | 3.3 | 5.5 | V | |
| Output Current (Source/Sink) | IOUT | - | ±3.5 | - | mA | VOD = 350mV |
| Output Differential Voltage | VOD | 300 | 350 | 400 | mV | IOUT = 3.5mA |
| Input High Voltage | VIH | 1.65 | 2.0 | 3.3 | V | VCC = 3.3V |
| Input Low Voltage | VIL | 0.8 | 1.0 | 1.65 | V | VCC = 3.3V |
| Propagation Delay | tpd | - | 2.5 | - | ns | VCC = 3.3V, VOD = 350mV, IOUT = 3.5mA |
| Skew | tskew | - | 0.2 | - | ns | VCC = 3.3V, VOD = 350mV, IOUT = 3.5mA |
| Operating Temperature Range | TA | -40 | - | 85 | °C | |
| Storage Temperature Range | TSTG | -65 | - | 150 | °C |
Instructions for Use
Power Supply:
- Ensure the supply voltage (VCC) is within the specified range of 2.2V to 5.5V.
- Connect a decoupling capacitor (typically 0.1μF) close to the VCC pin to filter out noise and provide stable operation.
Input Signals:
- The input signals should be within the specified input high (VIH) and input low (VIL) voltage levels.
- Ensure that the input signals are clean and free from excessive noise to avoid incorrect operation.
Output Signals:
- The output differential voltage (VOD) should be maintained at approximately 350mV for optimal performance.
- The output current (IOUT) should not exceed ±3.5mA to prevent damage to the device.
Propagation Delay and Skew:
- The propagation delay (tpd) is typically 2.5ns, and the skew (tskew) is typically 0.2ns. These parameters are critical for maintaining signal integrity in high-speed applications.
Temperature Considerations:
- The operating temperature range is from -40°C to 85°C. Ensure that the device is not exposed to temperatures outside this range during normal operation.
- The storage temperature range is from -65°C to 150°C. Store the device in a controlled environment to avoid damage.
Layout and PCB Design:
- Use controlled impedance traces for the differential pairs to maintain signal integrity.
- Keep the traces as short as possible to minimize reflections and crosstalk.
- Ground planes should be used to provide a low-impedance return path for the signals.
Testing and Debugging:
- Use an oscilloscope to verify the output differential voltage and propagation delay.
- Check for any excessive noise or distortion in the signals.
- Ensure that the power supply is stable and within the specified range.
By following these instructions, you can ensure reliable and efficient operation of the SN75189NSR LVDS line driver.
(For reference only)Inquiry - SN75189NSR
