TVS Diode Arrays (SPA® Diodes)
General Purpose ESD Protection - SP720 Series
SP720 Series 3pF 4kV Diode Array
RoHS
Pb
GREEN
Description
The SP720 is an array of SCR/Diode bipolar structures for
ESD and over-voltage protection to sensitive input circuits.
The SP720 has 2 protection SCR/Diode device structures
per input. A total of 14 available inputs can be used to
protect up to 14 external signal or bus lines. Over-voltage
protection is from the IN (pins 1-7 and 9-15) to V+ or V-.
The SCR structures are designed for fast triggering at a
threshold of one +VBE diode threshold above V+ (Pin 16) or
a -VBE diode threshold below V- (Pin 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.
Standard ESD Human Body Model (HBM) Capability is:
Pinout
IN 1
15 IN
IN 3
14 IN
IN 4
13 IN
• ESD Interface Capability for HBM Standards
IN 5
12 IN
- MIL STD 3015.7.................................................. 15kV
IN 6
11 IN
- IEC 61000-4-2, Direct Discharge,
IN 7
10 IN
- Single Input........................................... 4kV (Level 2)
9 IN
- Two Inputs in Parallel............................. 8kV (Level 4)
SP720 (PDIP SOIC)
,
TOP VIEW
16 V+
IN 2
- IEC 61000-4-2, Air Discharge................15kV (Level 4)
V-
8
Features
• High Peak Current Capability
Functional Block Diagram
- Single Pulse, 100µs Pulse Width......................... ±2A
V+ 16
- IEC 61000-4-5 (8/20µs)........................................ ±3A
- Single Pulse, 4µs Pulse Width............................. ±5A
• Designed to Provide Over-Voltage Protection
IN
IN 1
2
- Single-Ended Voltage Range to......................... +30V
3-7
9 - 15
- Differential Voltage Range to............................. ±15V
• Fast Switching...............................................2ns Risetime
IN
• Low Input Leakages..................................1nA at 25º (Typ)
• Low Input Capacitance........................................ 3pF (Typ)
• An Array of 14 SCR/Diode Pairs
• Operating Temperature Range....................-40ºC to 105ºC
V-
8
Applications
• Microprocessor/Logic
Input Protection
Datasheet
Resources
Samples
Life Support Note:
Not Intended for Use in Life Support or Life Saving Applications
The products shown herein are not designed for use in life sustaining or life saving
applications unless otherwise expressly indicated.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/23/17
• Analog Device Input
Protection
• Data Bus Protection
Additional Information
• Voltage Clamp
