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SN65LVDS9637BD Datasheet(PDF) 2 Page - Texas Instruments |
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SN65LVDS9637BD Datasheet(HTML) 2 Page - Texas Instruments |
2 / 20 page SN65LVDS32B, SN65LVDT32B, SN65LVDS3486B SN65LVDT3486B, SN65LVDS9637B, SN65LVDT9637B HIGH-SPEED DIFFERENTIAL RECEIVERS SLLS440A – OCTOBER 2000 – REVISED MAY 2001 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 description (continued) Precise control of the differential input voltage thresholds now allows for inclusion of 50 mV of input voltage hysteresis to improve noise rejection on slowly changing input signals. The input thresholds are still no more than ±50 mV over the full input common-mode voltage range. The high-speed switching of LVDS signals almost always necessitates the use of a line impedance matching resistor at the receiving-end of the cable or transmission media. The SN65LVDT series of receivers eliminates this external resistor by integrating it with the receiver. The nonterminated SN65LVDS series is also available for multidrop or other termination circuits. The receivers can withstand ±15-kV human-body model (HBM) and ±600 V-machine model (MM) electrostatic discharges to the receiver input pins with respect to ground without damage. This provides reliability in cabled and other connections where potentially damaging noise is always a threat. The receivers also include a (patent pending) fail-safe circuit that will provide a high-level output within 600 ns after loss of the input signal. The most common causes of signal loss are disconnected cables, shorted lines, or powered-down transmitters. This prevents noise from being received as valid data under these fault conditions. This feature may also be used for wired-OR bus signaling. The intended application of these devices and signaling technique is for point-to-point baseband data transmission over controlled impedance media of approximately 100 Ω. The transmission media may be printed-circuit board traces, backplanes, or cables. The ultimate rate and distance of data transfer is dependent upon the attenuation characteristics of the media and the noise coupling to the environment. The SN65LVDS32B, SN65LVDT32B, SN65LVDS3486B, SN65LVDT3486B, SN65LVDS9637B, and SN65LVDT9637B are characterized for operation from -40 °C to 85°C. AVAILABLE OPTIONS PART NUMBER† NUMBER OF RECEIVERS TERMINATION RESISTOR† SYMBOLIZATION SN65LVDS32BD 4 No LVDS32B SN65LVDT32BD 4 Yes LVDT32B SN65LVDS3486BD 4 No LVDS3486 SN65LVDT3486BD 4 Yes LVDT3486 SN65LVDS9637BD 2 No DK637B SN65LVDT9637BD 2 Yes DR637B † Add the suffix R for taped and reeled carrier. |
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