Line Interface. AM7945 Datasheet

AM7945 Interface. Datasheet pdf. Equivalent


AMD AM7945
Am7945 et4U.comSubscriber Line Interface Circuit
SheDISTINCTIVE CHARACTERISTICS
tas Programmable constant-current feed
.Das Current gain = 200
ws Programmable loop-detect threshold
ws Low power Standby state
ws Ground-key detector
ms Tip Open state for ground-start lines
os –19 V to –56.5 V battery operation
U.cBLOCK DIAGRAM
TMG
s On-chip Thermal Management (TMG) feature
s Two-wire impedance set by single external
impedance
s On-hook transmission
s On-chip ring relay driver and relay snubber
circuit
s Ideal for low cost PABX and key telephone
systems
et4A(TIP)
SheHPA
ataHPB
w.DB(RING)
ww U.comDA
et4DB
eVBAT
ataShBGND
Two-Wire
Interface
Ground-Key
Detector
Signal
Transmission
Off-Hook
Detector
Power-Feed
Controller
Ring-Trip
Detector
Ring Relay
Driver
Input Decoder
and Control
RINGOUT
C1
C2
C3
E0
E1
DET
RSN
VTX
RD
RDC
CAS
VCC VEE AGND/DGND
ww.DPublication# 18408 Rev: D Amendment: /0
w Issue Date: October 1999


AM7945 Datasheet
Recommendation AM7945 Datasheet
Part AM7945
Description Subscriber Line Interface
Feature AM7945; m o .c Am7945 t4U Subscriber Line eInterface Circuit e h S DISTINCTIVE a CHARACTERISTICS t a D . w w.
Manufacture AMD
Datasheet
Download AM7945 Datasheet




AMD AM7945
ORDERING INFORMATION
Standard Products
AMD standard products are available in several packages and operating ranges. The order number (Valid Combination) is formed
by a combination of the elements below.
Am7945
JC
TEMPERATURE RANGE
C = Commercial (0°C to 70°C)*
PACKAGE TYPE
J = 32-pin Plastic Leaded Chip Carrier (PL 032)
DEVICE NUMBER/DESCRIPTION
Am7945
Subscriber Line Interface Circuit
Valid Combinations
Am7945
JC
Valid Combinations
Valid Combinations list configurations planned to
be supported in volume for this device. Consult
the local AMD sales office to confirm availability
of specific valid combinations and to check on newly
released combinations, and to obtain additional
data on AMD’s standard military grade products.
Note:
* Functionality of the device from 0°C to +70°C is guaranteed by production testing. Performance from –40°C to +85°C is
guaranteed by characterization and periodic sampling of production units.
2 Am7945 Data Sheet



AMD AM7945
CONNECTION DIAGRAM
Top View
32-Pin PLCC
TP
RINGOUT
NC
TMG
VBAT
C3
E1
C2
DET
4
5
6
7
3
2 1 32 31 30
29
28
27
8 26
9 25
10 24
11 23
12 22
13 21
14 15 16 17 18 19 20
TP
DA
RD
HPB
NC
HPA
VTX
VEE
RSN
Notes:
1. Pin 1 is marked for orientation.
2. TP is a thermal conduction pin tied to substrate.
3. NC = No Connect
SLIC Products
3







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