CYG2911

CYG2911 Cybergate™ Features Transformer signal coupling Complete ring detector circuit Low power hookswitch Electronic inductor/gyrator circuit Surge protection Caller ID pinout to external relay (optional) Transient protection zeners V.32 compatible FCC Compatible PC board mountable Parallel telephone off-hook detection Description The CYG2911 is a Data Access Arrangement (DAA) module providing a complete telephone line interface circuit in a small 1.07" x 1.07" x 0.4" plastic package. This module incorporates a circuit which signals HIGH when another phone in parallel has been taken off-hook when the CYG2911 is off-hook. This feature is important for cable TV set-top boxes and direct broadcast satellite units which must hang-up (go on-hook) when a consumer needs the phone line to place a 911 or emergency call. The module is designed to meet FCC Part 68 requirements thus providing a low-risk design solution. Applications Home medical devices Plant monitoring equipment Security/alarm systems Utility meters Network routers PBX systems Telephony applications Set top boxes Approvals UL 1950/UL1459 Compatible with U.S. and Canadian phone lines Ordering Information Part # CYG2911 Description DAA Module Block Diagram CYG2911 LINE 1 LINE 2 1 2 GYRATOR/ CALLER ID RING R_LIM 18 17 470Ω VCC VCC GND HOOKSWITCH 14 13 911 CID1 CID2 911 OH RING 7 8 9 200k 47k R_LIM VCC VCC RING SURGE DETEC- PROTECTION TION 11 10 TIP RING RING ...