HC5517_00 Datasheet, PDF (18/19 Pages) Intersil Corporation – 3 REN Ringing SLIC For ISDN Modem/TA and WLL

HC5517
+5V _{PULSE METERING OPTION}
TIP
C₁₇
C₁₈
RING
R₁₁
R₁₃
14 TIP SENSE
V_RX 17
25 TF
ILIMT 11
D_{2 C9 D1}
R₁₀ ^R28
V_BAT
V_TX 19
D₄
D₃
C₈
††
26 RF
16 RING SENSE 2
R₉
R₁₂ ^R14
-IN1 13
15 RING SENSE 1 _{OUT1 12}
R₈
R₆
C₇
R₇
R₂
R₃
R₅
R₄
C₅ ^R1
+5V
-5V
U1
C₁
2
7
-
6
+
34
C₂
C₃
C₆
V_CC
BAT
SWITCH
BGND
-24V
R₂₂
D₁₀
2 V_CC
F1 4
C₁₅
D₁₂
T₁
C₁₄
1 AGND
22 BGND
FO 5
VR_EF 3
C₁₃
C₁₂
27 V_BAT
RDI 20
RDO 21
D₇
T₃
† D₈
V_RING 24
HC5517
R₃₁
+5V
D₁₃
D₆
C₁₁
R₁₈
+5V
R₁₉
R₂₄
T₂
D₁₁
C₁₆
V-REC
C₄
V-XMIT
V-TELETAX
F1
RC
R₂₁
D₉
-80V
RTI 28
SHD RTD ALM TST RS
7 8 10 9 6
† Not required for MOSFETs with body diodes.
†† Diode bridge optional for in-house use.
R₁₅
R₂₉
R₃₀
+5V
D₅
R₁₆
R₁₇
C₁₀
V_RING
FIGURE 15. APPLICATION CIRCUIT
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