HC-5502B Datasheet, PDF (7/9 Pages) Intersil Corporation – EIA/ITU PABX SLIC with 30mA Loop Feed

Schematic Diagram
HC-5502B
HC-5502B
Pin Numbers for DIP/SOIC Package
1 TF
1 TIP
2 RING
10 RF
21
RCV
22
11
12
23
6
3
4
20 19
BAT ANA
DIG
C4 V_{BAT GND GND VB+ GND} V_B+ C1
+
-
V_B+
18
OUT
V_B1
V_B+
+ ^R17
V_B2
VOLTAGE AND CURRENT
V_B3
BIAS NETWORK
V_B4
A-400
TIP FEED
V_B2
AMP -
V_B5
-5V
V_BAT
I_B4
I_B1 I_B2 I_B3 I_B4 I_B5 I_B6 I_B7 I_B8 V_BAT I_B9 I_B10 I_B11
-
A-500
OP AMP
+
V_BAT
I_B3
R₁₂
R₇
V_B+
R₈
V_B+
R₁₀
R_{9 VBAT}
V_B+
Q_D3 Q_D36
R₁₁
V_BAT
A-200
LONG’L
I/V AMP
I_B7
R₅
R₂₀
V_BAT
R₃
V_B+
R₄
R₁
R₂
R₁₆
A-100
TRANSV’L
I/VAMP
V_BAT
I_B6
R₆
R₁₅
V_BAT/2 REFERENCE
V_B2
A-300
R₁₄
RING FEED _R21
AMP
R₁₈
V_{BAT IB5}
R₁₉
RING TRIP
DETECTOR
-5V I_B10 V_B+
+5V
+
V_BAT
V_B4
I_B8
SWITCH HOOK
DETECTOR
V_B+
+
- VB1
I_B9
GK
GND SHORTS
CURRENT
LIMITING
I_B1
-
+
V_B3
V_BAT
IIL
LOGIC
INTERFACE
SH
Q_D27
Q_D28
LOOP CURRENT
LIMITING
I_B2
V_B5
+
THERMAL
LIMITING
V_B5
RFC
GKD ¹⁴
C2 17
SHD 13
RC 16
PD 15
V_BAT
R₁₃
V_BAT
V_BAT
C3
TX
5
24
RS
RD
7
8
53