Application Specific Discretes
A.S.D.
TM
DALC112S1
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
I/O 1
I/O 2
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 particularly suited for the protection of graphic video ports.
FEATURES
ARRAYOF 12 DIODESFOR ESD PROTECTION.
PEAK REVERSE VOLTAGE V
RRM
= 18V PER
DIODE.
VERYLOWCAPACITANCE PER DIODE: C < 5pF.
VERY LOW LEAKAGE CURRENT : I
R
< 2
µ
A.
FUNCTIONAL DIAGRAM
I/O 3
COMPLIESWITH THE FOLLOWINGSTANDARDS :
IEC 1000-4-2level 3 8 kV (air discharge)
6 kV (contactdischarge)
I/O 4
REF 1
I/O 6
REF 2
I/O 5
January 1998 - Ed: 4
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DALC112S1
TYPICAL APPLICATION
Vcc
DALC112S1
ABSOLUTE MAXIMUM RATINGS (T amb
= 25
°
C).
Symbol Parameter
V
RRM
T stg
T j
Peak reverse voltage per diode
Storage temperature range
Maximum junction temperature
ELECTRICAL CHARACTERISTICS (T amb
= 25
°
C).
Symbol
V
F
I
R
C
Forward voltage
Parameter
Reverse leakage current per diode
Input capacitance between Line and GND
V cc
= 5 V, V
RMS
= 30 mV, F = 1 MHz
(see figure 1 below)
Value
18
-55 to + 150
150
Unit
V
°
C
°
C
I
F
= 50 mA
V
R
= 15 V
Typ.
7
Max.
1.3
2
Unit
V
µ
A pF
Fig 1 : Input capacitance measurement
REF2
G
I/O
REF1
V
CC
+V
CC
connected between REF1 and REF2
Input applied :
Vcc = 5V, V
RMS
= 30 mV, F = 1 MHz
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DALC112S1
ORDER CODE
DALC 1 12 S 1 RL
Diode Array
Low
Capacitance
RL = tape& reel (2500 pcs).
= tube (100 pcs).
Version
SO8 Package
Nb. of Diodes
MARKING
Type
DALC112S1
Marking
DALC12
Order Code
DALC112S1
DALC112S1RL
Packaging (Base Qty) tube (100) tape & reel (2500)
PACKAGE MECHANICAL DATA
SO8 (Plastic)
REF.
DIMENSIONS
Millimetres Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
A a1 0.1
1.75
0.25
0.004
0.069
0.010
a2 b 0.35
e3
F
L b1 0.19
C c1
D
E e
4.8
5.8
3.8
0.4
0.50
1.27
3.81
1.65
0.48
0.25
0.007
45
5.0
6.2
4.0
1.27
°
0.014
(typ)
0.189
0.228
0.15
0.016
0.020
0.050
0.150
0.065
0.019
0.010
0.197
0.244
0.157
0.050
M
S
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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