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What is 75T2089?

This electronic component, produced by the manufacturer "ETC", performs the same function as "DTMF Transceivers".


75T2089 Datasheet PDF - ETC

Part Number 75T2089
Description DTMF Transceivers
Manufacturers ETC 
Logo ETC Logo 


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DESCRIPTION
TDK Semiconductor’s 75T2089/2090/2091 are
complete Dual-Tone Multifrequency (DTMF)
Transceivers that can both generate and detect all
16 DTMF tone-pairs. These ICs integrate the
performance-proven 75T202 DTMF receiver with a
DTMF generator circuit.
The DTMF receiver electrical characteristics are
identical to the standard 75T202 device
characteristics. The DTMF generator provides
performance similar to the Mostek MK5380, but with
an improved (tighter) output amplitude range
specification and with the addition of independent
latch and reset controls.
An additional feature of the 75T2090/2091 is
"imprecise" call progress detector. The detector
detects the presence of signals in the 305-640 Hz
band.
(continued)
75T2089/2090/2091
DTMF Transceivers
FEATURES
April 2000
DTMF Generator and Receiver on one-chip
Call progress detection (2090/2091 only)
Early detect output (2091 only)
DTMF Receiver exhibits excellent speech
immunity
Analog input range from -32 to -2 dBm
(ref 600)
Three-state outputs (4-bit hexadecimal) from
DTMF Receiver
AC coupled, internally biased analog input
Latched DTMF Generator inputs
DTMF output typ. -8 dBm (Low Band) and
-5.5 dBm (High Band)
Easy interface for microprocessor dialing
Uses inexpensive 3.579545 MHz crystal for
reference
Low-power 5 volt CMOS
BLOCK DIAGRAM
LIN
(2090/2091 only)
D7
D6
D5
D4
Vp
LATCH
Vp
RESET
DIN
XIN
DQ
DQ
DQ
DQ
CK
RS
X1
XOUT
XEN ATB
Vp
8
BANDSPLIT
FILTERS
INTERNAL
CLOCK
ENERGY
DETECTOR
Vp
DTMF
GENERATOR
CK Q
Vp D CLR
BANDPASS
FILTERS
BANDPASS
FILTERS
697
BS1 770
852
AMPLITUDE
DETECTORS
TIMING
CIRCUITRY
941
1209
BS2 1336
DV
STROBE
DV
F.F.
1477
1633
POWER REGULATOR
VOLTAGE
REF
OUTPUT
DECODER
AND
REGISTER
Vp Vn
DE
DET
(2090/2091 only)
DTMF
OUT
ED
(2091 only)
DV
D3
D2
D1
D0

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75T2089 equivalent
75T2089/2090/2091
DTMF Transceivers
DIGITAL AND DC REQUIREMENTS
The following electrical specifications apply to the digital input and output signals over the recommended
operating range unless otherwise noted. The specifications do not apply to the following pins: LIN, DIN, XIN,
XOUT, and DTMF OUT. Positive current is defined as entering the circuit. Vn = 0 unless otherwise stated.
PARAMETER
Supply Current*
Power Dissipation
Input Voltage High
Input Voltage Low
Input Current High
Input Current Low
Output Voltage High
Output Voltage Low
* with DTMF output disabled
CONDITIONS
Ioh = -0.2mA
IoI = +0.4mA
MIN
0.7Vp
-10
Vp-0.5
NOM
15
MAX
30
225
0.3Vp
10
Vn+0.5
UNIT
mA
mW
V
V
µA
µA
V
V
DTMF RECEIVER: Electrical Characteristics
PARAMETER
CONDITIONS
Frequency Detect Bandwidth
Amplitude for Detection
Each Tone
Twist Tolerance
60Hz Tolerance
Dial Tone Tolerance
Precise Dial Tone
Speech Immunity
MITEL Tape #CM7290
Noise Tolerance
MITEL Tape #CM7290
Input Impedance
* Referenced to lowest amplitude tone
MIN
=(1.5+2Hz)
-32
-10
NOM
=2.3
2
100
MAX
=3.5
-2
+10
0.8
0
-12
UNIT
%Fo
dBm/tone
dB
Vrms
dB*
hits
dB*
k
DTMF RECEIVER: Timing Characteristics
PARAMETER
TON Tone Time for Detect
TON Tone Time for No Detect
TOFF Pause Time for Redetection
TOFF Pause Time for Bridging
TD1 Detect Time
TR1 Release Time
CONDITIONS
MIN NOM MAX
40
20
40
20
25 46
35 50
UNIT
ms
ms
ms
ms
ms
ms
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for 75T2089 electronic component.


Information Total 9 Pages
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Featured Datasheets

Part NumberDescriptionMFRS
75T2089The function is DTMF Transceivers. ETCETC
75T2089-IPThe function is DTMF Transceivers. ETCETC

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