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The SP725 is an array of SCR/Diode bipolar structures for ESD and overvoltage protection of sensitive input circuits. The SP725 has 2 protection SCR/Diode device structures per input. There are a total of 4 available inputs that can be used to protect up to 4 external signal or bus lines. Over-voltage protection is from the IN (Pins 1 - 4) to V+ or V-.
The SCR structures are designed for fast triggering at a threshold of one +VBE diode threshold above V+ (Pin 5,6) or one –VBE diode threshold below V- (Pin 7,8). From an IN input, a clamp to V+ is activated if a transient pulse causes the input to be increased to a voltage level greater than one VBE above V+. A similar clamp to V- is activated if a negative pulse, one VBE less than V-, is applied to an IN input.
- ESD Interface per HBM Standards: IEC 61000-4-2, Direct Discharge - 8kV (Level 4); IEC 61000-4-2, Air Discharge - 15kV (Level 4); MIL-STD-3015.7 - 25kV
- Peak Current Capability: IEC 61000-4-5 8/20 μs Peak Pulse Current - ± 14 A; Single Transient Pulse, 100 μs Pulse Width - ± 8 A
- Designed to Provide Over-Voltage Protection: Single-Ended Voltage Range to - +30V; Differential Voltage Range to - ±15V;
- Fast Switching - 2ns Risetime
- Low Input Leakages - 5 nA at 25 °C Typical
- Low Input Capacitance - 5 pF Typical
- An Array of 4 SCR/Diode Pairs
- Operating Temperature Range - -40 °C to 105 °C
SP725 Parts
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SP725 Applications
- Microprocessor/Logic Input Protection
- Data Bus Protection
- Analog Device Input Protection
- Voltage Clamp
