hc55171b Intersil Corporation, hc55171b Datasheet - Page 10

• Manufacturer Part Number: hc55171b
• Description: Low Cost 5 Ren Ringing Slic For Isdn Modem/ta And Wl
• Manufacturer: Intersil Corporation

Trapezoidal Ringing Application Circuit
Pinouts
I
ALM
LIMIT
SHD
TST
RTD
RS
F0
11
10
6
7
8
5
9
RING
V
V
12
BAT
TST
TIP
CC
F1
F0
4
13
HC55171B (PLCC)
3
14
TOP VIEW
72
2
15
1
V
16
FIGURE 5. TRAPEZOIDAL RINGING APPLICATION CIRCUIT
28
CC
C
C
R
17
27
PS1
PS2
R
S2
S1
26
18
14
25
26
16
15
15
22
27
20
2
4
5
6
9
25
24
23
20
19
22
21
RDI
TIP SENSE
TF
RF
RING SENSE 2
RING SENSE 1
V
AGND
BGND
V
F1
F0
RS
TST
CC
BAT
TF
V
RDO
NU
BGND
RDI
V
RING
TX
HC55171B
HC55171B
U1
V
I
OUT1
V
LIMIT
RING
SHD
ALM
RTD
V
-IN1
V
REF
RTI
RX
TX
17
11
19
13
12
28
R
24
3
7
8
10
TIP SENSE
RT3
C
IL
OUT 1
AGND
I
R
C
R
R
V
LIMIT
SHD
ALM
-IN 1
R
RTD
V
IL1
AC
RF
ZO
TST
REF
R
IL2
RS
CC
F1
F0
D
RT2
TRAP
10
10
11
11
12
12
13
13
14
14
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
HC55171B (SOIC)
C
R
RT
RT1
TOP VIEW
C
C
RX
R
TRAP
D
TRAP
RT
28
28
27
27
26
26
25
25
24
24
23
23
22
22
21
21
20
20
19
19
18
18
17
17
16
16
15
15
V-REC
V
V-XMIT
SHD
RTD
ALM
RING
RTI
V
RF
TF
V
NU
BGND
RDO
RDI
V
NU
V
RING SENSE 2
RING SENSE 1
BAT
RING
TX
RX