March 2008 Rev 7 1/14
14
DALC208
Low capacitance diode array
Features
■ Protection of 4 lines
■ Peak reverse voltage: V
RRM
= 9 V per diode
■ Very low capacitance per diode: C < 5 pF
■ Very low leakage current: I
R
< 1 µA
Benefits
■ Cost-effective solution compared with discrete
solution
■ High efficiency in ESD suppression
■ No significant signal distortion thanks to very
low capacitance
■ High reliability offered by monolithic integration
■ Lower PCB area consumption versus discrete
solution
Complies with the following standards
■ IEC61000-4-2 level 4
■ MIL STD 883G-Method 3015-7: class 3,
human body model
Applications
Where ESD and/or over and undershoot
protection for datalines is required:
■ Sensitive logic input protection
■ Microprocessor based equipment
■ Audio / video inputs
■ Portable electronics
■ Networks
■ ISDN equipment
■ USB interface
Figure 1. Functional diagram
Description
The DALC208SC6 diode array is designed to
protect components which are connected to data
and transmission lines from over voltages caused
by electrostatic discharge (ESD) or other
transients. It is a rail-to-rail protection device also
suited for overshoot and undershoot suppression
on sensitive logic inputs.
The low capacitance of the DALC208SC6
prevents significant signal distortion.
1
SOT23-6L
(Plastic)
I/O 1
I/O 2 I/O 3
I/O 4
REF 2 REF 1
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