STMICROELECTRONICS DALC112

DALC112S1

Application Specific Discretes
A.S.D.TM
LOW CAPACITANCE DIODE
ARRAY FOR ESD PROTECTION
MAIN APPLICATIONS
Where ESD protection for high speed datalines is
required :
LAN / WAN equipment
Computer I/O
Graphic video port
Set top box I/O
SO8
DESCRIPTION
ARRAY of 12 diodes configured by cells of 2
diodes, each cell being used to protect signal line
from transient overvoltages by clamping action.
Its very low capacitance allows to protect fast
signals with no distortion. It is particularlysuited for
the protection of graphic video ports.
FUNCTIONAL DIAGRAM
FEATURES
ARRAYOF 12 DIODESFOR ESDPROTECTION.
PEAK REVERSE VOLTAGE VRRM= 18V PER
DIODE.
VERYLOWCAPACITANCE PERDIODE: C <5pF.
VERY LOW LEAKAGE CURRENT : IR < 2 µA.
I/O 1
REF 1
I/O 2
I/O 6
I/O 3
REF 2
COMPLIESWITHTHE FOLLOWINGSTANDARDS :
IEC1000-4-2level 3
January 1998 - Ed: 4
8 kV (air discharge)
6 kV (contactdischarge)
I/O 4
I/O 5
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DALC112S1
TYPICAL APPLICATION
Vcc
DALC112S1
ABSOLUTE MAXIMUM RATINGS (Tamb =25°C).
Symbol
Parameter
Value
Unit
VRRM
Peak reverse voltage per diode
18
V
Tstg
Tj
Storage temperature range
Maximum junction temperature
-55 to + 150
150
°C
°C
ELECTRICAL CHARACTERISTICS (Tamb = 25°C).
Symbol
Parameter
Typ.
Max.
Unit
VF
Forward voltage
IF = 50 mA
1.3
V
IR
Reverse leakage current per diode
VR = 15 V
2
µA
C
Input capacitance between Line and GND
Vcc = 5 V, VRMS = 30 mV, F = 1 MHz
(see figure 1 below)
7
Fig 1 : Input capacitance measurement
REF2
I/O
VCC
G
REF1
2/3
+VCC connected between REF1 and REF2
Input applied :
Vcc = 5V, VRMS = 30 mV, F = 1 MHz
pF
DALC112S1
ORDER CODE
DALC 1 12 S 1 RL
RL = tape& reel (2500 pcs).
= tube (100 pcs).
Diode Array
Low
Capacitance
Version
SO8 Package
Nb. of Diodes
MARKING
Type
DALC112S1
Marking
DALC12
Order Code
Packaging (Base Qty)
DALC112S1
DALC112S1RL
PACKAGE MECHANICAL DATA
SO8 (Plastic)
tube (100)
tape & reel (2500)
REF.
A
DIMENSIONS
Millimetres
Inches
Min. Typ. Max. Min. Typ. Max.
1.75
0.069
a1
0.1
0.25
a2
b
0.35
b1
0.19
C
c1
D
E
0.004
0.010
1.65
0.48
0.014
0.065
0.019
0.25
0.007
0.50
0.010
0.020
45° (typ)
4.8
5.8
e
5.0
6.2
0.189
0.228
1.27
0.197
0.244
0.050
e3
F
3.8
4.0
0.15
0.157
L
0.4
1.27
0.016
0.050
M
S
3.81
0.150
0.6
8° (max)
0.024
PACKAGING : Preferred packaging is tape and reel.
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of
use of such information nor for any infringementof patents or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to
change without notice. This publication supersedes and replaces all informationprevious ly supplied.
STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
 1998 STMicroelectronics - Printed in Italy - All rights reserved.
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