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SP720AB Datasheet PDF : 6 Pages
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TVS Diode Arrays
Electronic Protection Array for ESD and Overvoltage Protection
SP720
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 tran-
sient 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:
HBM STANDARD
MODE
R
C ESD (V)
IEC 61000-4-2 Air
330Ω 150pF >15kV
Direct
330Ω 150pF >4kV
Direct, Dual Pins 330Ω 150pF >8kV
MIL-STD-3015.7 Direct, In-circuit 1.5kΩ 100pF >15kV
Refer to Figure 1 and Table 1 for further detail. Refer to Application Note
AN9304 and AN9612 for additional information.
Ordering Information
PART NO.
SP720AP
SP720AB
SP720ABT
TEMP. RANGE
(oC)
-40 to 105
-40 to 105
-40 to 105
PACKAGE
16 Ld PDIP
16 Ld SOIC
16 Ld SOIC
Tape and Reel
PKG.
NO.
E16.3
M16.15
M16.15
Min.
Order
1500
1970
2500
Pinout
SP720 (PDIP, SOIC)
TOP VIEW
IN 1
IN 2
IN 3
IN 4
IN 5
IN 6
IN 7
V- 8
16 V+
15 IN
14 IN
13 IN
12 IN
11 IN
10 IN
9 IN
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 Risetime
• Low Input Leakages . . . . . . . . . . . . . . . . . . . . . . . . . 1nA at 25oC (Typ)
• Low Input Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3pF (Typ)
• An Array of 14 SCR/Diode Pairs
• Operating Temperature Range . . . . . . . . . . . . . . . . . . . . -40oC to 105oC
Applications
• Microprocessor/Logic Input Protection
• Data Bus Protection
• Analog Device Input Protection
• Voltage Clamp
Functional Block Diagram
V+ 16
3-7
IN
9 - 15
IN 1
2
IN
V- 8
228
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