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L3914AD Datasheet(PDF) 7 Page - STMicroelectronics

Part # L3914AD
Description  SPEECH AND 14 MEMORY DIALER WITH HOLD FUNCTION
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L3914AD Datasheet(HTML) 7 Page - STMicroelectronics

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ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VLN
Positive Line Voltage Continuous
12
V
ILN
Line Current
140
mA
VDD
Logic Voltage
7.0
V
VI
Maximum Voltage on Any Pin
GND(-0.3) VDD(+0.3)
V
Tamb
Operating Temperature Range
-25 to +75
°C
Tstg
Storage Temperature
-40 to 125
°C
Ptot
Total Power Dissipation
700
mW
ELECTRICAL CHARACTERISTICS (IL = 10 to 120mA; VDD = 3V; f = 1KHz; Tamb =25
°C, unless other-
wise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Fig.
VLN
Line Voltage
IL = 4mA
IL = 15mA
IL = 120mA
RA = 68K
Ω ; IL = 15mA
RB = 39K
Ω ;IL = 15mA
3.15
3.50
3.2
4.1
2.50
3.85
7.0
V
V
V
V
V
3
VDD
Logic Voltage)
TONE MODE
PULSE MODE
2.50
2.20
6.00
6.00
V
V
3
IDD
Supply Current Into VDD
TONE MODE
PULSE MODE
600
400
µA
µA
3
ICC
Supply Current Into VCC
IL = 15mA
1.30
mA
3
ILED
Supply Current to HOLD LED
IL = 15mA
IL = 120mA
4
30
mA
mA
3
VMR
Memory Retention Voltage
1.50
V
4
IMR
Memory Retention Current
1.00
µA4
IS
Off-Hook Stand-by Current
VDD = 4.0V
150
250
µA3
IPL
Pulse Output Sink Current
VO = 0.5V
1.00
3.00
mA
3
IPO
Pacifier Tone Sink/Source
Current
VO = 0.5V (Sink)
VO = 2.5V (Source)
1
0.6
3
1
mA
mA
3
VIL
HKS, Mode, Keyboard Inputs
Low
0.3xVDD
V-
VIH
HKS, Mode, Keyboard Inputs
High
0.7xVDD
V-
GTX
Transmit Gain
Vmic = 2mVrms
IL = 15mA; RGTX = 68K
Ω
IL = 60mA; RGTX = 68K
Ω
50.0
44.5
51.5
46.5
53.0
48.5
dB
dB
6
AGTX
Transmit Gain Variation with
RGTX
IL = 15mA
Vmic = 2mVrms
RGTX = 43K
Ω
RGTX = 27K
Ω
–8
–4
–8
0dB
dB
dB
6
DTX
Transmit Distortion
IL = 15mA; VLN = 1Vrms
2
%
6
NTX
Transmit Noise
IL = 15mA; Vmic = 0V
–72
dBmp
6
ZMIC
Microphone Input Impedance
64
K
Ω
5
GDTMF
DTMF Gain (Output @ LN)
IL =15mA ; RDTMF =2.25K
Ω
38
40
42
dB
7
CDTMF
Confidence Tone Level
Vear/VLN
–34
–32
–30
dB
7
L3914A - L3924A - L3934A
7/15


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