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PDF M-985-01S Data sheet ( Hoja de datos )

Número de pieza M-985-01S
Descripción Precise Call Progress and Special Information Tone Generator
Fabricantes Clare Inc. 
Logotipo Clare  Inc. Logotipo



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Features
Precise detection of call progress tones
Linear (analog) input
Digital (CMOS compatible), tri-state outputs
22-pin DIP and 20-pin SOIC
Single supply 3 to 5 volt (low power CMOS)
Inexpensive 3.58 MHz crystal time base
Wide dynamic range (30 dB)
Lower power consumption (power-down mode)
425 Hz detection
Special Information Tone (SIT) Detection
Applications
Automatic dialers
Dialing modems
Traffic measurement equipment
Test equipment
Service evaluation
Billing systems
M-985-01
Precise Call Progress and
Special Information Tone Generator
Description
The M-985-01 is an integrated circuit precise tone
detector for call progress and special information
tones (SIT), as defined by CCITT.
The use of integrated circuit techniques allows the
M-985-01 to pack the eight filters for call progress
detection into a single 22-pin DIP or a 20-pin SOIC. A
3.58 MHz crystal-controlled time base guarantees
accuracy and repeatability.
The M-985-01 combines the call progress detection of
the M-982-02 and the SIT detection of the M-984-02.
It has an operating voltage range down to 3V. It has
low power consumption under normal operating con-
ditions. A power down (PD) feature is provided to fur-
ther reduce power consumption when inactive.
Ordering Information
Part #
M-985-01P
M-985-01S
M-985-01T
Description
22-pin plastic DIP
20-pin plastic SOIC
20-pin plastic SOIC,Tape and Reel
Pin Diagram
Block Diagram
DS-M985-01-R1
www.clare.com
1

1 page




M-985-01S pdf
M-985-01
Truth Table (Continued)
Signal Present (fo)
Mode
OUT 1
Any X 0
Any X
Any X
Any X
Notes:
1. This output indicates 400 Hz detect when MODE is connected to VSS.
2. This output indicates 620 Hz detect when MODE is open or connected to VDD.
OUT 2 OUT 3 OUT 4
00
0
High Impedance
High Impedance
High Impedance
D425
0
Strobe
0
X
0
X
PD
0
0
0
1
OE EN
10
01
00
0X
Detector Frequency Windows for SIT Tones
Detector
D950
D1400
D1800
Low Reject
835
1275
1656
Low Accept
885
1328
1722
High Accept
1016
1472
1854
High Reject
1070
1527
1924
Call Progress Tones
Frequency (HZ)
12
350 440
400 Off
440 Off
440 480
440 620
480 Off
480 620
350 Off
620 Off
425 Off
SIT Timing
Use
Dial Tone
Special
Alert Tone
Audible Ring
Pre-empt
Bell High Tone
Reorder (Bell Low)
Special
Special
European
Rev. 1 www.clare.com
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