HC2411 [ETC]
Tone Ringer ; 音铃声\n
ETC 
Tone Ringer
HC2411
HSiN Semiconductor Pte Ltd
www.hsin.com.sg
1. Overview
The HC2411 is a bipolar integrated circuit designed for telephone bell replacement
Low power dissipation
Adjustable output tune
Adjustable switching rate
Built-in hysteresis prevents false triggering
DIP8
2. Block Diagram and Pin Description
2.1 Block Diagram
1
Hysteresis
2
High Freq.
Oscillator
Output
AMP
Low Freq.
Oscillator
Regulator
8
5
3
4
6
7
2.2 Pin Description
Pin No. Symbol
Description
Supply Voltage
Pin No.
Symbol
GND
Description
GND
High Frequency
Oscillation Resistance
High Frequency
Oscillation Capacitor
1
2
VCC
5
6
TR
Triggering Input
RTf
3
4
Low Frequency
Oscillation Capacitor
Low Frequency
7
8
CSf
RSf
CTf
OUT
Output
Oscillation Resistance
Page 1 of 3
3. Electrical Characteristics
3.1 Absolute Maximum Ratings
Unless otherwise specified, Tamb= 25
Parameter
Supply Voltage
Power Dissipation
Operating Temperature
Symbol
VCC
PD
Tamb
Tstg
Value
30
400
-45~65
-65~150
Unit
V
mW
Storage Temperature
3.2 Electrical Characteristics
Unless otherwise specified, Tamb= 25
Value
Min Typ Max
29.0
Parameter
Supply Voltage
Initiation Voltage
Initiation Current
Sustain Voltage
Sustain Current
Symbol
Test Conditions
Unit
VCC
VINIT
IINIT
V
V
mA
V
17
1.4
9.7
0.7
19
2.5
11.0 12.0
1.4
21
4.2
RSL=6.8k
VSUST
ISUST No load, VCC=VSUST
2.5
mA
VCC=21V, I8= -15mA
V6=6V, V7=0V
VCC=21V, I8=15mA
V7=6V, V6=0V
Output Level High
Output Level Low
VOH
17
19
21
V
V
VOL
1.6
High Frequency 1
High Frequency 2
Low Frequency
fH1
fH2
fSW
RTF =191k, CTF =6800pF
RTF =191k, CTF =6800pF
RSF =165k, CSF =0.47uF
461
576
9
512
640
10
563
704
11
Hz
Hz
Hz
4. Test Circuit
1
2
3
4
8
7
6
5
I8
HC2411
RSL
6.8k
R
tf
191k
C
tf
C2
6800pF
+
Rsf
22 F
165k
C
sf
0.47 F
5. Characteristics Curve
Icc ─ Vcc
mA
5
No load
4
3
2
1
3.3K
6.8K
9.1K
30
0
V
40
10
20
Supply Voltage Vcc
Page 2 of 3
6. Application Circuit
C1
R1
2k
T
R
1 F
C3
/250V
1
2
3
4
8
7
6
5
0.22 F
100k
HC2411
RSL
R
tf
191k
6.8k
29V
+
C2
C
tf
6800pF
Rsf
22 F
/50V
165k
15
C
sf
k
0.47 F
8
1300
7. Package Dimensions
Page 3 of 3
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