TI Introduces High-Speed LVDS And LVPECL Repeaters And Translators
TI introduced a 4-Gbps low-voltage differential signaling (LVDS) and low-voltage pseudo emitter-coupled logic (LVPECL) repeater and translator. Featuring low total jitter of 45 ps, the devices help ensure signal and clock integrity in various communications applications including high-speed network routing, wireless base stations and 622-MHz central office clock distribution, and they can also serve as translators in an array of consumer applications.
Both the SN65LVDS and SN65LVP20 connect a high-speed differential receiver and driver as a repeater. The receiver accepts low-voltage PECL signals at rates up to 4 Gbps and repeats them as LVDS (LVDS20) or LVPECL (LVP20) output signals. The differential signal path through the devices minimizes electromagnetic interference (EMI) and limits added jitter, which are key issues in communications and consumer electronics design. The new devices offer 3.3-V and 2.5-V operation, enabling designers to migrate seamlessly to a 2.5-V supply as system needs dictate.
The LVDS20 and LVP20 join TI's portfolio of products supporting the LVDS and LVPECL standards, including the LVDS16/17/18/19 and LVP16/17/18/19 high gain output oscillator buffers.
- Low-voltage PECL input and low-voltage PECL or LVDS outputs
- Signaling rates to 4 Gbps or clock rates to 2 GHz
- 120-ps output transition times
- Less than 45 ps total jitter
- Less than 630 ps propagation delay times
- 2.5-V or 3.3-V supply operation
- Output disable pin
- Supply current less than 42 mA
The LVDS20/LVP20 are available in volume from TI and its authorized distributors, packaged in an eight-pin, 2 x 2 x 0.75 mm Lead (Pb)-Free small-outline, no-leads package (SON). Suggested resale pricing in 1,000-piece quantities is $3.30 for the LVDS20 and $4.40 for the LVP20. Samples are available for 24-hour delivery.
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