DS91D180

DS91D180/DS91C180 Multipoint LVDS (M-LVDS) Line Driver/Receiver June 2006 DS91D180/DS91C180 Multipoint LVDS (M-LVDS) Line Driver/Receiver General Description The DS91D180 and DS91C180 are high-speed differential M-LVDS single drivers/receivers designed for multipoint applications with multiple drivers or receivers. Multipoint LVDS (M-LVDS) is a new bus interface standard (TIA/EIA-899) based on LVDS but including several enhancements to improve multipoint performance. M-LVDS devices have superior drive capability and can support up to 32 loads. Along with increased drive, M-LVDS devices are required to have a controlled edge rate to minimize reflections and EMI. The 1 nSec minimum edge rate is tolerant of stub lengths up to 2 inches in length. M-LVDS devices also have a very large common mode range for additional noise margin in heavily loaded and noisy backplane environments The DS91D180/DS91C180 driver input accepts LVTTL/ LVCMOS signals and converts them to differential M-LVDS signal levels. The DS91D180/DS91C180 receiver accepts low voltage differential signals (LVDS, B-LVDS, M-LVDS, LV-PECL) and converts them to 3V LVCMOS signals. The DS91D180 has a M-LVDS type 1 receiver input with no offset.The DS91C180 receiver contains an M-LVDS ”type 2” failsafe circuit with an internal 100 mV offset that provides a LOW output for both short and open input conditions. Features n n n n n n n n n n Meets TIA/EIA-899 M-LVDS Standard Capable of driving 32 M-LVDS loads Controlled edge ...