TVS Diode Arrays
Electronic Protection Array for ESD and Overvoltage Protection
SP723
The SP723 is an array of SCR/Diode bipolar structures for ESD and
over-voltage protection of sensitive input circuits. The SP723 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.
Refer to Fig 1 and Table 1 for further details. Refer to Application Note
AN9304 and AN9612 for further detail.
Features
鈥?ESD Interface per HBM Standards
- IEC 61000-4-2, Direct Discharge . . . . . . . . . . . . . . . . . 8kV (Level 4)
- IEC 61000-4-2, Air Discharge . . . . . . . . . . . . . . . . . . 15kV (Level 4)
- MIL-STD-3015.7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25kV
鈥?Peak Current Capability
- IEC 61000-4-5 8/20碌s Peak Pulse Current. . . . . . . . . . . . . . . . . 鹵7A
- Single Transient Pulse, 100s Pulse Width. . . . . . . . . . . . . . . . . . 鹵4A
鈥?Designed to Provide Over-Voltage Protection
- Single-Ended Voltage Range to . . . . . . . . . . . . . . . . . . . . . . . . +30V
- Differential Voltage Range to. . . . . . . . . . . . . . . . . . . . . . . . . . . 鹵15V
鈥?Fast Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2ns Risetime
鈥?Low Input Leakages . . . . . . . . . . . . . . . . . . . . . . . . 2nA at 25
o
C Typical
Ordering Information
PART
NUMBER
SP723AP
SP723AB
SP723ABT
TEMP. RANGE
(
o
C)
-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
Qty.
2000
1960
2500
Functional Diagram
V+ 8
鈥?Low Input Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5pF Typical
鈥?An Array of 6 SCR/Diode Pairs
鈥?Operating Temperature Range . . . . . . . . . . . . . . . . . . . . -40
o
C to 105
o
C
Applications
3, 5-7
IN
1
IN 2
IN
鈥?Microprocessor/Logic Input Protection
鈥?Data Bus Protection
鈥?Analog Device Input Protection
鈥?Voltage Clamp
V- 4
Pinout
SP723
(PDIP, SOIC)
TOP VIEW
IN
IN
IN
V-
1
2
3
4
8
7
6
5
V+
IN
IN
IN
240
w w w. l i t t e l f u s e . c o m
LITTELFUSE
1
2
3
4
5
6
