CYG2911 Datasheet, PDF (1/4 Pages) Clare, Inc. – 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
Applications
• Home medical devices
• Plant monitoring equipment
• Security/alarm systems
• Utility meters
• Network routers
• PBX systems
• Telephony applications
• Set top boxes
CYG2911
Cybergate™
Description
The CYG2911 is a Data Access Arrangement (DAA) mod-
ule 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 require-
ments thus providing a low-risk design solution.
Approvals
• UL 1950/UL1459
• Compatible with U.S. and Canadian phone lines
Ordering Information
Part #
CYG2911
Description
DAA Module
Block Diagram
CYG2911
LINE 1 ¹
LINE 2 ²
911 ⁷
OH ⁸
RING ⁹
RING ^R_LIM
GYRATOR/
CALLER ID
470Ω ^VCC
18 _VCC
17 _GND
HOOKSWITCH
200k
47k
911
R_LIM
V_CC
V_CC
RING SURGE
DETEC- PROTEC-
TION TION
RING
14 _CID1
13 _CID2
11
TIP
10 _RING
Handling and Assembly Recommendations
The CYG2911 products are not hermetically sealed and should not be exposed to any liquid-based rinsing processes. Clare recommends two (2) approaches. The modem
should either use a no clean soldering flux that would mostly evaporate during the normal wave soldering processes, or be soldered in by hand after the rest of the card
is wave soldered.
DS-CYG2911-R1
www.clare.com
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