TVS Diode Arrays (SPA Diodes) General Purpose ESD Protection - SP721 Series RoHS Pb GREEN SP721 Series 3pF 4kV Diode Array 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. Over- voltage protection is from the IN (Pins 1 - 3 and Pins 5 - 7) to V+ or V-. The SCR structures are designed for fast triggering at a threshold of one +V diode threshold above V+ (Pin 8) or BE a -V diode threshold below V- (Pin 4). From an IN input, BE a clamp to V+ is activated if a transient pulse causes the input to be increased to a voltage level greater than one V above V+. A similar clamp to V- is activated if a negative Pinout BE pulse, one V less than V-, is applied to an IN input. BE Standard ESD Human Body Model (HBM) Capability is: IN 1 8 V+ SP721 (PDIP, SOIC) IN 2 7 IN Features TOP VIEW IN 3 6 IN ESD Interface Capability for HBM Standards V- 4 5 IN - MIL STD 3015.7 ................................................. 15kV - IEC 61000-4-2, Direct Discharge, - Single Input .......................................... 4kV (Level 2) Functional Block Diagram - Two Inputs in Parallel ............................ 8kV (Level 4) - IEC 61000-4-2, Air Discharge ...............15kV (Level 4) High Peak Current Capability - IEC 61000-4-5 (8/20s) ....................................... 3A - Single Pulse, 100s Pulse Width ........................ 2A - Single Pulse, 4s 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 25C Typical Low Input Capacitance .....................................3pF Typical An Array of 6 SCR/Diode Pairs Operating Temperature Range....................-40C to 105C Additional Information Applications Microprocessor/Logic Analog Device Input Input Protection Protection Data Bus Protection Voltage Clamp Resources Samples 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/12/17 TVS Diode Arrays (SPA Diodes) General Purpose ESD Protection - SP721 Series Absolute Maximum Ratings Thermal Information Parameter Rating Units Parameter Rating Units o Continuous Supply Voltage, (V+) - (V-) +35 V Thermal Resistance (Typical, Note 1) C/W JA o Forward Peak Current, I to V , I to GND PDIP Package 160 C/W IN CC IN 2, 100s A (Refer to Figure 5) o SOIC Package 170 C/W CAUTION: Stresses above those listed in Absolute Maximum Ratings may cause o Maximum Storage Temperature Range -65 to 150 C permanent damage to the device. This is a stress only rating and operation of the device Maximum Junction Temperature (Plastic at these or any other conditions above those indicated in the operational sections of this o 150 C specification is not implied. Package) Note: Maximum Lead Temperature o 260 C ESD Ratings and Capability (Figure 1, Table 1) (Soldering 20-40s)(SOIC Lead Tips Only) Load Dump and Reverse Battery (Note 2) 1. is measured with the component mounted on an evaluation PC board in free air. JA o o Electrical Characteristics T = -40 C to 105 C, V = 0.5V , Unless Otherwise Specified A IN CC Parameter Symbol Test Conditions Min Typ Max Units Operating Voltage Range, V - 2 to 30 - V SUPPLY V = (V+) - (V-) SUPPLY Forward Voltage Drop IN to V- V I = 1A (Peak Pulse) - 2 - V FWDL IN IN to V+ V - 2 - V FWDH Input Leakage Current I -20 5 +20 nA IN Quiescent Supply Current I - 50 200 nA QUIESCENT Equivalent SCR ON Threshold Note 3 - 1.1 - V Equivalent SCR ON Resistance V /I Note 3 - 1 - FWD FWD Input Capacitance C - 3 - pF IN Input Switching Speed t - 2 - ns ON Notes: 2. In automotive and battery operated systems, the power supply lines should be externally protected for load dump and reverse battery. When the V+ and V- Pins are connected to het same supply voltage source as the device or control line under protection, a current limiti ng resistor should be connected in series between the external supply and the SP721 supply pins to limit reverse battery current to within the rated maximum limits. Bypass capacitors of typically 0.01F or larger romf the V+ and V- Pins to ground are recommended. 3. Refer to the Figure 3 graph for definitions of equivalent SCR ON Threshold and SCR ON Resistance. These characteristics are given here for thumb-rule nformation to determine peak current and dissipation under EOS conditions. Typical Application of the SP721 (Application as an Input Clamp for Over-voltage, Greater than 1V Above V+ or less than -1V below V-) BE BE 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/12/17