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Mixed Signal & Analog Showcase
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Mixed Signal & Analog Showcase

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Showcase (Volume 24) is available in HTML and PDF format. - 316KB

400 Mbps, high-speed data transmission

Product Features

  • Single 3.3 V supply
  • tr/tf typ = 750 ps (400 Mbps)
  • Propagation delay = 1.7 ns typ
  • ESD – 8 kV
  • Open-circuit fail safe
  • Characterized for operation from –40°C to 85°C

The SN65LVDS31 quadruple differential driver and the complementary SN65LVDS32 quadruple differential receiver are new Low Voltage Differential Signaling (LVDS) products. These LVDS drivers and receivers operate from a single 3.3 V supply and are targeting general purpose high-speed data transmissions in both the telecommunications and computing markets. These devices were developed to address the need for a general purpose, high-speed data line interface standard.

The SN65LVDS31 accepts 3 V TTL/CMOS input levels and transforms them using current-mode drivers to deliver a differential output into a 100 load. The driver has very low propagation delay times of 1.7 ns typically with sub-1 ns output voltage transition times to support data rates of up to 400 Mbps.

The SN65LVDS32 receives the low voltage differential signals and outputs low-voltage TTL to the communications controller. The receiver is capable of detecting signals as low as ±100 mV over a ±1 V common-mode input voltage range.

Due to the increased susceptibility to ESD events on the bus pins, protection is of the utmost importance. Both products have an ESD rating of ±8 kV (HBM).

These products are intended to be primarily used in a point-to-point communication over a controlled impedance media of 100. Both products are available in 16-pin Small Outline Integrated Circuit (SOIC) and is pin compatible with the AM26LS3x (5 V) and AM26LV3x.

Vol 24 November, 1997

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