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.

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

Applications

• Home medical devices

• Plant monitoring equipment

• Security/alarm systems

• Utility meters

• Network routers

• PBX systems

• Telephony applications

• Set top boxes