HC55121IM Intersil, HC55121IM Datasheet - Page 32

• Manufacturer Part Number: HC55121IM
• Manufacturer: Intersil

Specifications of HC55121IM

• Number Of Channels: 1
• On-hook Transmission: Yes
• Polarity Reversal: Yes
• On-chip Ring Relay Driver: Yes
• Longitudinal Balanced: 53
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: -40C to 85C
• Package Type: PLCC
• Loop Current Limit: 30mA
• Operating Temperature Classification: Industrial
• Pin Count: 28
• Mounting: Surface Mount
• Operating Current: 2.7mA
• Operating Supply Voltage (max): 5.25V
• Operating Supply Voltage (min): 4.75V
• Lead Free Status / RoHS Status: Not Compliant

Basic Application Circuit - Pulse Metering 28 Lead PLCC Package
Design Parameters: Maximum on hook voltage = 0.775V
signal = 2.2V
protection resistors, impedance across Tip and Ring terminals = 600Ω . Where applicable, these component values apply to the Basic Application
Circuits for the HC55120, HC55121, HC55130/1, HC55140/1, HC55142/3 and HC55150/1. Pins not shown in the Basic Application Circuit are
no connect (NC) pins.
U1 - SLIC
U2 - Dual Asymmetrical Transient Voltage Suppressor
RP (Line Feed Resistors)
R1 (RDC_RAC Resistor)
R2, R3
R4 (RD Resistor)
R5 (ROH Resistor)
R6 (RILIM Resistor)
R7 (RSYNC_REV Resistor)
R8 (RZT Resistor)
R9, R10, R11
R12
C1 (Supply Decoupling), C2
C5 (Supply Decoupling)
C6 (Supply Decoupling)
C4, C7, C10, C11
C3
C8, C9
D1, Recommended if the VBL supply is not derived from the VBH Supply
RING
GENERATOR
V
-48V
BAT
-24V
RMS
RING
+5V OR
+12V
TIP
C
HC55120, HC55121, HC55130, HC55140, HC55142, HC55143, HC55150
5
, Switch Hook Threshold = 12mA, Loop Current Limit = 31mA, Synthesize Device Impedance = 540Ω (600 - 60), with 30Ω
RELAY
C
R
6
12
COMPONENT
R
R
P
P
32
OPTIONAL
FIGURE 28. UniSLIC14 PULSE METERING BASIC APPLICATION CIRCUIT
U2
D
R
R
TABLE 3. BASIC APPLICATION CIRCUIT COMPONENT LIST
1
2
3
+5V
C
C
C
1
9
+5V
+
C
C7
R
2
C
8
1
3
C
-
4
20
10
12
13
14
11
5
6
7
2
3
8
9
RING
BGND
TIP
V
RRLY
CH
VBH
VBL
RDC_RAC
CDC
DT
DR
CRT_REV_LVM
CC
RMS
, Maximum off hook voice = 1.1V
U1
RSYNC_REV
GKD_LVM
AGND
UniSLIC14 Family
SPM
PTG
VRX
R
SHD
ILIM
V
TISP1072F3
RD
OH
ZT
C1
C2
C3
TX
1N4004
VALUE
2200pF
26.1kΩ
41.2kΩ
38.3kΩ
33.2kΩ
34.8kΩ
0.47µF
107kΩ
0.1µF
0.1µF
0.1µF
4.7µF
400Ω
20kΩ
2MΩ
30Ω
28
1
27
26
4
24
23
22
21
18
19
17
16
15
25
R
R
R
R
R
8
7
6
5
4
CONTROL LOGIC
††
††
PEAK
C10
C11
TOLERANCE
, Maximum simultaneous pulse metering
Matched 1%
†
PERFORM TRANSHYBRID BALANCE
WHEN USING A NON-DSP CODEC.
NOT REQUIRED FOR DSP CODEC.
20%
20%
20%
20%
20%
20%
N/A
N/A
1%
1%
1%
1%
1%
1%
1%
1%
5%
-
†
†
R
R
10
††
9
NOT REQUIRED FOR
NON-DSP CODEC’s.
REQUIRED FOR DSP CODEC’s
CODEC/FILTER
12/16kHz
PULSE METERING
INPUT SIGNAL
R
11
RATING
1/16W
1/16W
1/16W
1/16W
1/16W
1/16W
1/16W
1/16W
2.0W
100V
100V
10V
50V
10V
50V
N/A
N/A
2W
-
June 1, 2006
FN4659.13