IL9270N
DTMF signal receiver
(analog HM9270)
IC IL9270N is (DTMF) signal two-channel receiver-decoder (code 2 from 8).I脩 is fabricated
on C脤脦S technology and containes bandpass filters on switched capacitors. IC checks
length of incoming twochannel signal dispatches and pauses between them. Information
output as 4-digit binary code.IC clocking is carried out from quartz(-crystal) resonator with
frequency Fc= 3,579545 脤Hz.
MAIN CHARACTERISTICS
demodulates all 16 standard DTMF signals
Low consumed capacitance: 15 mW
One power source: 5 V+-5%
quarts generator with frequency 3,58 mHz is used
three state outputs
probability of mistaken decoding is 1/10000
Package - plastic 18-connection DIP (type 2104.18-脌)
APPLICATION
* 脌utomatic 脪elephone Station
* call alert paging
* remote control systems
* credit card systems
* button telephone systems
* answering mashine
* domestic auto systems
Arrangement and purpose of outputs
Pin
01
02
03
04
05,06
07,08
09
10
11路14
15
16
17
18
Symbol
IN+
IN-
CS
Vref
NC
OSC1,2
GND
TOE
Q1-Q4
StD
ESt
St/GT
Vcc
Purpose
non inverting input 脦A
inverting input 脦A
operational amplifier output脦A)
reference voltage output (Vcc/2)
unconnected
tact input/output.
general
input of output inable
three state data output
control output貓每
output of early control
control input/output
power +5 V
Korzhenevskogo 12, Minsk, 220064, Republic of
Belarus
Fax:
+375 (17) 278 28 22,
Phone: +375 (17) 278 07 11, 277 24 70, 277 24 61,
277 69 16
E-mail: belms@belms.belpak.minsk.by
URL: www.bms.by
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