®
MH80626C
Battery Feed/Protection SIP
Preliminary Information
Features
•
•
•
•
2 x high power, high voltage, thick film surge
protection resistors
2 x high accuracy, high stability matched
battery feed resistors
2 replaceable 2AG fuses in surface-mounted
fuse clips
Used with the MH89626C for a complete OPS
line interface
MH80626C
ISSUE 2
April 1995
Ordering Information
20 Pin SIL Package
0°C to 70°C
Description
The MH80626C hybrid SIP provides a protection
circuit consisting of two 2AG size fuses in surface-
mounted fuse clips and two high voltage, high power
5.5Ω surge resistors.
The MH80626C also provides two high stability, high
power 50Ω feed resistor matched to 0.1%.
The SIP provides full secondary protection for the
MH89626C Off-Premise SLIC, allowing conformance
to the requirements of various international safety
and performance standards.
Applications
•
Battery feed and secondary protection for Off-
Premise SLICS
TCOM
F1
TIN
R1
R3
TF
T
R5
RF2
RF1
R
F2
RIN
R2
R4
RF
RCOM
Figure 1 - Functional Block Diagram
2-7
MH80626C
Preliminary Information
TIN
NC
IC
NC
TCOM
T
R
RCOM
NC
IC
NC
RF
NC
TF
NC
RF1
NC
RF2
NC
RIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Figure 2 - Pin Connections
Pin Description
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Name
TIN
NC
IC
NC
TCOM
T
R
RCOM
NC
IC
NC
RF
NC
TF
NC
RF1
NC
RF2
NC
RIN
Description
TIP Input.
Connects to TIP conductor of the Subscriber Loop.
No Connection:
There is no pin in this location
Internal Connection:
Do no connect to this pin.
No Connection:
There is no pin in this location.
TIP Common:
Connects to TIP pin of the SLIC via a normally closed ringing relay. See
Figure 1.
TIP Connection:
Connects to TIP pin of the SLIC.
RING Connection:
Connect to the RING pin of the SLIC.
RING Common:
Connects to RING pin of the SLIC via a normally closed ringing relay. See
Figure 1.
No Connection:
There is no pin in this location.
Internal Connection:
Do not connect to this pin.
No Connection:
There is no pin in this location.
RING Feed Connection:
Connects to the RF pin of the SLIC.
No Connection:
There is no pin in this location.
TIP Feed Connection:
Connect to the TF pin of the SLIC.
No Connection:
There is no pin in this location.
RING Feed 1. Ringing Input:
Connects to ringing supply.
No Connection:
There is no pin in this location.
RING Feed 2. Ringing Output:
Connects to RING line through the ring relay contact.
No Connection:
There is no pin in this location.
RING Input:
Connects to RING conductor of the subscriber loop.
2-8
Preliminary Information
Electrical Characteristics 0°C to 70°C
Characteristics
1
2
3
4
5
6
7
8
9
Resistance - absolute
Resistance - absolute
Resistance - match
Resistance - absolute
Resistance - absolute
Resistance - match
Resistance - absolute
Fuse
Fuse
R5
F1
F2
555
560
0.25
0.25
R3
R4
49.75
49.75
50
50
Symbol
R1
R2
Min
4.5
4.5
Typ*
5.5
5.5
Max
6
6
1
50.25
50.25
0.1
565
Units
Ω
Ω
%
Ω
Ω
%
Ω
Amps
Amps
MH80626C
Test Conditions
Match between R1 &
R2
Match between R3 &
R4
250 VAC
Slow Blow
250 VAC
Slow Blow
* Typical figures are at 25°C and are for design aid only
Reference
Specification
1
Test
Lightning Surge
Simulation
Power Induction
Power Cross
Description
1kV
10 x 700
µsec
300 Vrms
200 msec
220 Vrms
15 min
Performance
No damage
No arching, fuse intact
No damage
No arching, fuse intact
No damage
No arching, fuse blows
Comments
See Note 1
CCITT K.20
2
3
CCITT K.20
CCITT K.20
See Note 1
See Note 1
Note 1: Refer to the appropriate Telecom Equipment Safety specifications for full details of the test and requirements
2-9
MH80626C
Preliminary Information
0.34 MAX
2.0 + 0.020
0.01 MIN
(0.25)
(50.8 + 0.5)
FUSE AREA
0.7 + 0.020
(17.8 + 0.5)
FUSE AREA
1
1
2
3
4
5
6
20
Notes:
1) Not to scale
2) Dimensions in inches).
3) (Dimensions in millimetres).
*Dimensions to centre of pin &
tolerance non accumulative.
0.05 + 0.01
(1.3 + 0.5)
*
0.05 + 0.02
(1.225 + 0.05)
*
*
0.18 + 0.02
(4.6 + 0.5)
0.020 + 0.005 0.100 + 0.010
(0.51 + 0.13) (2.54 + 0.26)
Figure 3 - Mechanical Data
2-10
嵌入式系统
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