DS91D180 Datasheet | National Semiconductor

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 n Sec minimum edge rate is tolerant of stub lengths up to 2 inches in length. M-LVDS devices also have a very large mon 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 m V 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 rates tolerant to stubs Wide mon Mode for Increased Noise Immunity DS91D180 has type 1 receiver input DS91C180 has type 2 Fail-safe support Up to 200 Mbps operation Industrial temperature range Single 3.3 V Supply 14L SOIC Package (JEDEC MS-012) Typical Application in Advanced TCA Clock Distribution © 2006 National Semiconductor Corporation DS200419 .national. DS91D180/DS91C180 Connection Diagram Logic Diagram Top View Order Number DS91D180TMA, DS91C180TMA See NS Package Number M14A Ordering Information Order Number DS91D180TMA DS91C180TMA Receiver Input type 1 type 2 Function Data (0V threshold receiver)...