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LE7942B-1DJC

Description
IC slic 1ch P RV 32plcc
CategoryWireless rf/communication    Telecom circuit   
File Size470KB,19 Pages
ManufacturerMicrosemi
Websitehttps://www.microsemi.com
Environmental Compliance
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LE7942B-1DJC Overview

IC slic 1ch P RV 32plcc

LE7942B-1DJC Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerMicrosemi
Parts packaging codeLCC
package instructionQCCJ,
Contacts32
Reach Compliance Codecompli
JESD-30 codeR-PQCC-J32
JESD-609 codee3
length13.97 mm
Number of functions1
Number of terminals32
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeQCCJ
Package shapeRECTANGULAR
Package formCHIP CARRIER
Certification statusNot Qualified
Maximum seat height3.556 mm
Nominal supply voltage5 V
surface mountYES
Telecom integrated circuit typesSLIC
Temperature levelCOMMERCIAL
Terminal surfaceMATTE TIN
Terminal formJ BEND
Terminal pitch1.27 mm
Terminal locationQUAD
width11.43 mm
Le7942B
A
Voice Solution
Subscriber Line Interface Circuit
VE580 Series
Compatible with Le7942 Device
Tip Open state for ground-start lines
–19 V to –58 V battery operation
Ideal for PBX and KTS applications
On-chip switching regulator for low-power
dissipation
Can be used with or without the on-chip switching
regulator
On-hook transmission
DISTINCTIVE CHARACTERISTICS
Programmable constant-current feed
Receive current gain = 500
Programmable loop-detect threshold
Low standby power
Performs polarity reversal
Ground-key detector
Pin for external ground-key noise filter capacitor
Test relay driver option
BLOCK DIAGRAM
Test Relay Driver
Ring Relay Driver
TESTOUT
RINGOUT
C1
C2
HPA
Two-Wire
Interface
HPB
Signal
Transmission
Off-Hook
Detector
RD
Power-Feed
Controller
DA
DB
VREG
L
VBAT
BGND
CHS QBAT CHCLK
VCC
VEE AGND/DGND
15474A-001
A(TIP)
Ground-Key
Detector
Input Decoder
and Control
C3
C4
E1
DET
GKFIL
RSN
VTX
B(RING)
RDC
CAS
Ring-Trip
Detector
Switching
Regulator
NOTE: On August 3, 2007, Zarlink Semiconductor acquired the products and
technology of Legerity Holdings.
Document ID#
081195
Date:
Rev:
E
Version:
Distribution:
Public Document
Sep 19, 2007
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