MAX3207E データシートの表示（PDF） - Maxim Integrated
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MAX3207E Datasheet PDF : 13 Pages
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Dual, Quad, and Hex High-Speed
Differential ESD-Protection ICs
Detailed Description
The MAX3205E/MAX3207E/MAX3208E low-capacitance,
±15kV ESD-protection diode arrays with an integrated
transient voltage suppressor (TVS) clamp are suitable for
high-speed and general-signal ESD protection. Low
input capacitance makes these devices ideal for ESD
protection of signals in HDTV, PC monitors (DVI, HDMI),
PC peripherals (FireWire, USB 2.0), Server Interconnect
(PCI Express, Infiniband), Datacom, and Inter-Chassis
Interconnect. Each channel consists of a pair of diodes
that steer ESD current pulses to VCC or GND. The
MAX3205E, MAX3207E, and MAX3208E are two, four,
and six channels (see the Functional Diagram).
The MAX3205E/MAX3207E/MAX3208E are designed to
work in conjunction with a device’s intrinsic ESD pro-
tection. The MAX3205E/MAX3207E/MAX3208E limit the
excursion of the ESD event to below ±25V peak voltage
when subjected to the Human Body Model waveform.
When subjected to the IEC 61000-4-2 waveform, the
peak voltage is limited to ±60V when subjected to
Contact Discharge. The peak voltage is limited to
±100V when subjected to Air-Gap Discharge. The
device protected by the MAX3205E/MAX3207E/
MAX3208E must be able to withstand these peak volt-
ages, plus any additional voltage generated by the par-
asitic of the board.
A TVS is integrated into the MAX3205E/MAX3207E/
MAX3208E to help clamp ESD to a known voltage. This
helps reduce the effects of parasitic inductance on the
VCC rail by clamping VCC to a known voltage during an
ESD event. For the lowest possible clamp voltage dur-
ing an ESD event, placing a 0.1µF capacitor as close to
VCC as possible is recommended.
Functional Diagram
MAX3207E
VCC
MAX3208E
VCC
MAX3205E
VCC
I/O1
I/O2
I/O1 I/O2
I/O3 I/O4
I/O1 I/O2 I/O3
I/O4 I/O5 I/O6
GND
GND
GND
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