Description

The SP721 is an array of SCR/Diode bipolar structures for ESD and over-voltage protection to sensitive input circuits. The SP721 has 2 protection SCR/Diode device structures per input. There are a total of 6 available inputs that can be used to protect up to 6 external signal or bus lines. Overvoltage protection is from the IN (Pins 1 - 3 and Pins 5 - 7) to V+ or V-.

Features

• ESD Interface Capability for HBM Standards

- MIL STD 3015.7................................................. 15kV

- IEC 61000-4-2, Direct Discharge,

- Single Input .......................................... 4kV (Level 2)

- Two Inputs in Parallel ............................ 8kV (Level 4)

- IEC 61000-4-2, Air Discharge...............15kV (Level 4)

• High Peak Current Capability

- IEC 61000-4-5 (8/20µs) ....................................... ±3A

- Single Pulse, 100µs Pulse Width ........................ ±2A

- Single Pulse, 4µs Pulse Width............................ ±5A

• Designed to Provide Over-Voltage Protection

- Single-Ended Voltage Range to ........................ +30V

- Differential Voltage Range to ............................ ±15V

• Fast Switching.............................................2ns Rise Time

• Low Input Leakages............................1nA at 25ºC Typical

• Low Input Capacitance.....................................3pF Typical

• An Array of 6 SCR/Diode Pairs

• Operating Temperature Range....................-40ºC to 105ºC

Applications

• Microprocessor/Logic Input Protection

• Data Bus Protection

• Analog Device Input Protection

• Voltage Clamp