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PDF SP721 Data sheet ( Hoja de datos )
| Número de pieza | SP721 | |
| Descripción | Electronic Protection Array for ESD snd Over Voltage Protection | |
| Fabricantes | LittelFuse | |
| Logotipo |  |
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TVS Diode Arrays
Electronic Protection Array for ESD and Overvoltage Protection
SP721
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
+VBE diode threshold above V+ (Pin 8) or a -VBE diode threshold below
V- (Pin 4). 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:
HBM
STANDARD
MODE
IEC 61000-4-2 Air
Direct
Direct, Dual Pins
MIL-STD-3015.7 Direct, In-Circuit
R C ESD (V)
330Ω 150pF >15kV
330Ω 150pF >4kV
330Ω 150pF >8kV
1.5kΩ 100pF >15kV
Refer to Figure 1 and Table 1 for further detail. Refer to Application
Notes AN9304 and AN9612 for additional information.
Ordering Information
PART NO.
SP721AP
SP721AB
SP721ABT
TEMP. RANGE
(oC)
-40 to 105
-40 to 105
-40 to 105
PACKAGE
8 Ld PDIP
8 Ld SOIC
8 Ld SOIC
Tape and Reel
PKG.
NO.
E8.3
M8.15
M8.15
Min.
Order
2000
1960
2500
Pinout
SP721 (PDIP, SOIC)
TOP VIEW
IN 1
IN 2
IN 3
V- 4
8 V+
7 IN
6 IN
5 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 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
Functional Block Diagram
V+ 8
IN 1
IN 2
3, 5-7
IN
V- 4
234 w w w . l i t t e l f u s e . c o m
1 page  
TVS Diode Arrays
Electronic Protection Array for ESD and Overvoltage Protection
SP721
Dual-In-Line Plastic Packages (PDIP)
INDEX
AREA
N
12 3
-A-
BASE
PLANE
SEATING
PLANE
D1
B1
B
E1
N/2
-B-
D
-C- A2 A
L
D1
e
A1
eC
0.010 (0.25) M C A B S
E
CL
eA
C
eB
NOTES:
1. Controlling Dimensions: INCH. In case of conflict between
English and Metric dimensions, the inch dimensions control.
2. Dimensioning and tolerancing per ANSI Y14.5M-1982.
3. Symbols are defined in the “MO Series Symbol List” in Section
2.2 of Publication No. 95.
4. Dimensions A, A1 and L are measured with the package seated
in JEDEC seating plane gauge GS-3.
5. D, D1, and E1 dimensions do not include mold flash or protru-
sions. Mold flash or protrusions shall not exceed 0.010 inch
(0.25mm).
6. E and eA are measured with the leads constrained to be per-
pendicular to datum -C- .
7. eB and eC are measured at the lead tips with the leads uncon-
strained. eC must be zero or greater.
8. B1 maximum dimensions do not include dambar protrusions.
Dambar protrusions shall not exceed 0.010 inch (0.25mm).
9. N is the maximum number of terminal positions.
10. Corner leads (1, N, N/2 and N/2 + 1) for E8.3, E16.3, E18.3,
E28.3, E42.6 will have a B1 dimension of 0.030 - 0.045 inch
(0.76 - 1.14mm).
E8.3 (JEDEC MS-001-BA ISSUE D)
8 LEAD DUAL-IN-LINE PLASTIC PACKAGE
INCHES
MILLIMETERS
SYMBOL MIN MAX MIN MAX
A
-
0.210
-
5.33
A1
0.015
-
0.39
-
A2
0.115 0.195 2.93
4.95
B 0.014 0.022 0.356 0.558
B1
0.045 0.070 1.15
1.77
C 0.008 0.014 0.204 0.355
D 0.355 0.400 9.01 10.16
D1 0.005 - 0.13 -
E
0.300 0.325 7.62
8.25
E1
0.240 0.280 6.10
7.11
e 0.100 BSC
2.54 BSC
eA 0.300 BSC
7.62 BSC
eB - 0.430 - 10.92
L
0.115 0.150 2.93
3.81
N8
8
NOTES
4
4
-
-
8, 10
-
5
5
6
5
-
6
7
4
9
238 w w w . l i t t e l f u s e . c o m
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet SP721.PDF ] | |
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