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HC5504B Datasheet, PDF (8/9 Pages) Intersil Corporation – EIA/ITU PABX SLIC with 40mA Loop Feed
HC-5504B
Schematic Diagram (Continued)
LOGIC GATE SCHEMATIC
C2
GK
1
2
SH
16
LOGIC BIAS
6
4
5
7
10
DELAY
3
8
9
12
11
15
TTL
TO
STTL
TTL
TO
STTL
TTL
TO
STTL
TO
R21
RS
RC
PD
13
14
RELAY
DRIVER
A
B
C
SCHOTTKY LOGIC
STTL
STTL
C
TO
TO
TTL
TTL
B
A
RD
SHD
GKD
Overvoltage Protection and Longitudinal
Current Protection
The SLIC device, in conjunction with an external protection
bridge, will withstand high voltage lightning surges and
power line crosses.
High voltage surge conditions are as specified in Table 1.
The SLIC will withstand longitudinal currents up to a
maximum or 30mARMS, 15mARMS per leg, without any
performance degradation.
TABLE 1.
PARAMETER
TEST
PERFORMANCE
CONDITION
(MAX)
Longitudinal
Surge
10µs Rise/
1000µs Fall
±1000 (Plastic)
±500 (Ceramic)
Metallic Surge 10µs Rise/
±1000 (Plastic)
1000µs Fall ±500 (Ceramic)
T/GND
10µs Rise/
±1000 (Plastic)
R/GND
1000µs Fall ±500 (Ceramic)
50/60Hz Current
T/GND
11 Cycles
700 (Plastic)
R/GND
Limited to
10ARMS
350 (Ceramic)
UNITS
VPEAK
VPEAK
VPEAK
VPEAK
VPEAK
VPEAK
VRMS
VRMS
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