AN3007

SLVU2.8 protection devices

Doc ID 16018 Rev 1

5/20

2

SLVU2.8 protection devices

SLVU2.8 products are low voltage and low capacitance clamping protection devices.

There are two versions:

●

SLVU2.8-4A1, which provides 2-line pair (four lines) bidirectional protection

●

SLVU2.8-8A, which provides 4-line pair (eight lines) bidirectional protection.

Both are available in an SO-8 package.

Figure 5.

SLVU2.8-4A1 and SLVU2.8-8A1 functional diagrams

Figure 5 presents the SLVU2.8-4A1 and SLVU2.8-8A1 functional diagrams. Both diagrams

show the presence of diodes that offer a low capacitance structure.

SLVU2.8-4A1 and SLVU2.8-8A1 present a typical capacitance of 3 pF that allow them to be

compatible with 100 Mbps and Gigabit Ethernet lines since, in this way, they preserve the

signal integrity.

Both devices are compliant with the IEC 61000-4-5 Level 2 requirements. That is, they are

able to withstand a 24 A(8 / 20 µs) surge current. They comply also with IEC 61000-4-2

Level 4 requirements. That is they can support 8 kV contact and 15 kV air discharges for

ESD.

Thanks to low operating voltage (2.8 V @ 0.2 µA) compatible with Ethernet applications,

both devices offer a low clamping voltage: <15 V @ 24 A (8 / 20 µs), which provides an

efficient protection of the Ethernet transceiver.

The SLVU2.8-4A1 has a flow through design to minimize the track inductances and then to

reduce the peak voltage during an ESD surge.

In the same way, the internal layout of the SLVU2.8-8A1 is optimized to minimize the track

inductances and then to reduce the peak voltage during an ESD surge.

SLVU2.8-4A1

SLVU2.8-8A1