Camarillo, Calif. Semtech Corp. has introduced the RClamp 0524J, a 5-V protection device for DisplayPort and other high-speed interface applications. The TVS array also can be used to protect HDMI 1.3, eSATA, PCI express, InfiniBand, and MDDI high-speed data interfaces.
The Displayport interface features a transfer rate of 1.62 Gbits/s or 2.7 Gbits/s per lane, and a four-lane configuration has a maximum total data rate of 10.8 Gbits/s. At these high data rates, a low capacitance protection device is essential, because introducing any significant capacitance on the line will degrade signal integrity, said Semtech. The four-line RClamp0524J is a TVS array with a capacitance of 0.3 pF between I/O pins, and can be used on circuits operating at speeds up to 3-GHz without signal attenuation. The ultra-low capacitance means that common-mode chokes are not required for impedance compensation in DisplayPort designs.
Protecting DisplayPort systems from electrostatic discharge (ESD), cable discharge event (CDE) or latchup, the RClamp0524J meets the stringent IEC 61000-4-2 standard for ESD protection (+/-15 kV for air, +/-8 kV for contact). The device also meets IEC standards for electrical fast transients (EFT) and for lightning strikes.
The device comes in a special SLP-style package with an ultra-thin design that reduces trace discontinuities. The package is leadless to reduce stubs that can impact signal quality, and provides a flow-through design to avoid trace routing issues that can impact signal integrity, said Semtech. The device also features a 0.5-mm lead pitch so that the differential traces can be tightly coupled for good common-mode noise rejection. These features, combined with a 0.3 pF capacitance, mean the devices can be used on two-, four- or six-layer boards without added trace compensation.
The RClamp0524J is available in an 8-pin SLP2710P8 package measuring 2.7 x 1.0 x 0.58 mm. The device is RoHS and WEEE compliant.
Pricing: $0.35 each in quantities of 1,000.
Availability: The RClamp0524J (order code: RClamp 0524J.TCT) is available immediately in production quantities.
Product information: RClamp0524J
Semtech Corp., 1-805-498-2111, www.semtech.com