LVDS Description and Family Characteristics
December 2000
Revised December 2000
LVDS Description and Family Characteristics
Low Voltage Differential Signaling (LVDS) defines a
reduced swing, differential I/O technology for high-speed
interface (Figure 1 and Figure 2). Many LVDS devices are
defined by the ANSI/TIA/EIA-644 standard also known as
RS-644. RS-644 compliant devices provide specific I/O
characteristics designed to provide a low noise, low power,
low EMI, high-speed interface. All Fairchild LVDS devices
meet or exceed the ANSI/TIA/EIA-644 standard.
LVDS devices are typically used for point-to-point and lim-
ited multi-drop cable driving configurations. Many Fairchild
LVDS devices offer features to increase performance such
as common mode (Figure 3) for increased application flexi-
bility and failsafe to eliminate false or unexpected states.
Many LVDS devices are pin replacements for existing inter-
face technologies such as RS-422, PECL, and LVPECL.
This compatibility makes upgrades to higher performance
possible with minimum redesign.
FIGURE 1.
FIGURE 2.
FIGURE 3.
漏 2000 Fairchild Semiconductor Corporation
MS500530
www.fairchildsemi.com
1
2
