HC5503C Datasheet, PDF (5/5 Pages) Intersil Corporation – Unbalanced PBX/Key System SLIC, Subscriber Line Interface Circuit

HC5503C
Applications Diagram
SYSTEM CONTROLLER
13
5V
RS
SHD
TIP
K_1A
R_B1
1
TIP
R_{B2 9}
(NOTE 4)
TIP FEED
C₅
TX ²⁴
C₄
RX ²¹
PRIMARY
PROTEC-
SUBSCRIBER TION
LOOP
RING
K_1A
R_B3
PTC
V_BAT
10
VB(INT)
SLIC
HC5503C
T3 ²⁰
19
T2
R_B4
2 RING
18
T1
C1 ⁵
V_BAT BGND DGND AGND V_CC
11
12
C₂
6
23 _C3 3
C₁
-48V
V_CC
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%
R_B1 = R_B2 = R_B3 = R_B4 = 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 V_CC or V_BAT. 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.
TX
HHCC55550033CC
SSLLIICC
RX
JUNC
JUNC
TX
HC5503C
SLIC
RX
DUAL
OP-AMP
CD22100E
CROSSPOINT
SWITCH
DUAL
OP-AMP
FIGURE 2. TYPICAL ANALOG KEY SYSTEM CONNECTION
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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.
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