™
Le75181
Ringing Access Switch
VE750 Series
APPLICATIONS
Central office
DLC
PBX
DAML
HFC/FITL
DESCRIPTION
The VoiceEdge™ family VE750 series of Line Card Access
Switches (LCAS) is a family of monolithic solid-state switches
that is designed to provide both power ringing access and test
access on the analog line card. These devices, while not a pin-
for-pin replacement for the traditional electromechanical relay
(EMR) solution, provide the equivalent switching functionality.
The VE750 series LCAS is meant as a solid-state alternative to
the EMRs.
The Le75181A/B device is pin-for-pin compatible with
Zarlink’s
L7581A/B device, and the Le75181C device is pin-
for-pin compatible with
Zarlink’s
L8581A device.
Zarlink
also offers a range of compatible SLIC devices and
codec/filters that can be used with the VE750 series LCAS for
complete line card solutions that can be used worldwide in
analog line card applications.
FEATURES
Small size/surface-mount packaging
Monolithic IC reliability
Low impulse noise
Make-before-break, break-before-make operation
Clean, bounce-free switching
Low, matched ON-resistance
Built-in current limiting, thermal shutdown, and SLIC
protection
5 V only operation, very low power consumption
Battery monitor, all OFF state upon loss of battery
No EMI
Latched logic level inputs, no drive circuitry
Only one external protector required
TTL logic control compatible
Default power up state
BLOCK DIAGRAM
Le75181A/C
FGND
SCR
& Trip
Circuit
VBAT
TBAT
RBAT
TLINE
SW1
SW2
RLINE
TRINGING
RRINGING
SW3
SW4
LATCH
RELATED LITERATURE
081123 Le75282 Dual Intelligent Line Card Access
Switch Data Sheet
081126 Le75183 Line Card Access Switch Data Sheet
080754 Le58QL061/063 QLSLAC Data Sheet
080676 Le5711 Dual SLIC Data Sheet
081047 Le5712 Dual SLIC Data Sheet
FGND
VDD
INPUT
Temperature
Shutdown
TSD
DGND
Le75181B
VBAT
ORDERING INFORMATION
Device
LE75181ABSC
LE75181BBSC
LE75181CBSC
1.
The green package meets RoHS Directive 2002/95/EC of the
European Council to minimize the environmental impact of
electrical equipment.
For delivery using a tape and reel packing system, add a "T" suffix
to the OPN (Ordering Part Number) when placing an order.
16-Pin SOIC, GULL (Green)
Tube
Package Type
1
Packing
2
TBAT
RBAT
TLINE
SW3
SW1
SW2
RLINE
SW4
TRINGING
RRINGING
LATCH
VDD
INPUT
Temperature Shutdown
2.
TSD
DGND
Document ID#
081105 Date:
Sep 18, 2007
Rev:
E
Version: 2
Distribution:
Public Document
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
