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PDF HC5503C Data sheet ( Hoja de datos )
| Número de pieza | HC5503C | |
| Descripción | Unbalanced PBX/Key System SLIC/ Subscriber Line Interface Circuit | |
| Fabricantes | Intersil Corporation | |
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Data Sheet
June 1998
HC5503C
File Number 4503
Unbalanced PBX/Key System SLIC,
Subscriber Line Interface Circuit
The Intersil HC5503C is a low cost Subscriber Line Interface
Circuit (SLIC), that replaces the components of an
unbalanced discrete Analog circuit design. The monolithic
integrated design provides improved performance and
system reliability.
The SLIC provides: current limited DC feed to the subscriber
loop, maintains a flat frequency response over the voice
band and beyond, has self resetting thermal protection that
allows conversation to continue while the fault is present,
provides a TTL subscriber off-hook indication even in the
presence of longitudinal currents, provides unbalanced
2-wire transmission while maintaining an excellent
longitudinal balance and limits system power consumption
on short loops.
The HC5503C provides on-hook transmission and
longitudinal current rejection in both the on-hook or off-hook
conditions. The SLIC needs only one +5V supply in addition
to the main battery supply (-24V to -58V) for loop current.
Available in 22PDIP and 24SO packaging. The HC5503C is
ideally suited as a replacement for discrete line circuits in
low cost analog PABX’s, Small Office/Home Office products
or Small Key Systems.
Block Diagram
BGND
TF
VB(INT)
VBAT
LOOP FEED
Features
• Monolithic Integrated Device
• Single +5V Supply
• Controlled Supply of Battery Feed Current for Short Loops
(30mA)
• Allows Interfacing With All Ringing Systems
• Switch Hook Detection
• Low Power Consumption During Standby
Applications
• PBX Switches (Analog, Digital or ISDN)
• Key Telephone Systems (KTS)
• ISDN PC Plug in Modems
• ISDN Small Office / Home Office (SOHO) Terminal Adapt-
ers (TA)
• CTI (Computer Telephony Integration) Products
Ordering Information
PART NUMBER
HC5503CCP
HC5503CCB
TEMP.
RANGE (oC) PACKAGE
0 to 75 22 Ld PDIP
0 to 75 24 Ld SOIC
PKG. NO.
E22.4
M24.3
TIP RING
C1
SPEECH CIRCUIT
TX
RX
LOOP DETECTOR
BIAS
RS
VCC
AGND DGND
SHD
49 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
1 page  
HC5503C
Applications Diagram
SYSTEM CONTROLLER
13
5V
RS
SHD
TIP
K1A
RB1
1
TIP
RB2 9
(NOTE 4)
TIP FEED
C5
TX 24
C4
RX 21
PRIMARY
PROTEC-
SUBSCRIBER TION
LOOP
RING
K1A
RB3
PTC
VBAT
10
VB(INT)
SLIC
HC5503C
T3 20
19
T2
RB4
2 RING
18
T1
C1 5
VBAT BGND DGND AGND VCC
11 12
C2
6 23 C3 3
C1
-48V
VCC
Z1
RING GENERATOR
PIN NUMBERS GIVEN FOR SOIC PACKAGE.
-48V
FIGURE 1. TYPICAL LINE CIRCUIT APPLICATION WITH THE MONOLITHIC SLIC
Typical Component Values
C1 = 0.3µF, 30V, ±20%
C2 = 0.01µF, 100V, ±20%
RB1 = RB2 = RB3 = RB4 = 150Ω
C3 = 0.01µF, 20V, ±20%
C4 = 0.5µF, 20V, ±20%
C5 = 0.5µF, 20V, ±20%
PTC used as ring generator ballast.
NOTES:
4. Secondary protection diode bridge recommended is a 2A, 200V type.
5. All grounds (AG, BG, and DG) must be applied before VCC or VBAT. Failure to do so may result in premature failure of the part. If a user wishes
to run separate grounds off a line card, the AG must be applied first.
6. Application shows Ring Injected Ringing.
HHCC55550033CC
SSLLIICC
TX
RX
JUNC
JUNC
TX
HC5503C
SLIC
RX
DUAL
OP-AMP
CD22100E
CROSSPOINT
SWITCH
DUAL
OP-AMP
FIGURE 2. TYPICAL ANALOG KEY SYSTEM CONNECTION
All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with-
out notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site http://www.intersil.com
53
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| PDF Descargar | [ Datasheet HC5503C.PDF ] | |
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