BU8877 Datasheet, PDF (1/3 Pages) List of Unclassifed Manufacturers – Call Progress Tone Decoder for Telephone

99W121A
Call Progress Tone Decoder for Telephone
BU8877/F
Description
The BU8877 and BU8877F are ICs that
detect dial tones from a call progress signal
used in the telephone lines. The ICs detect
dual signals 350Hz(from 345 to 355Hz)and
440Hz(from 435 to 445Hz).
Dimension(Units:mm)
BU8877
Features
1) No malfunction by voice signal
2) Dual tone detection (350Hz and 440Hz)
3) Wide dynamic range
4) 3.58MHz crystal resonator
BU8877F
DIP8
Applications
Telephone, Codeless telephone and Facsimile for the U.S.
Absolute Maximum Ratings (Ta=25˚C)
Parameter
Symbol
Limits
Unit
Power supply voltage
V_CC
Power
dissipation
DIP8
SOP16
Pd
7
V
800 ^*1
300 ^*2
mW
Operating temperature range Topr
-30 ~ +80
˚C
Storage temperature range Tstg
-55 ~ +125
˚C
*1 Derating:8.0mW/˚C for operation above Ta=25˚C
*2 Derating:3.0mW/˚C for operation above Ta=25˚C
SOP16
Recommended Operating Conditions (Ta=25˚C)
Parameter
Power supply voltage
Symbol
V_DD
Min.
2.85
Typ.
-
Max. Unit
5.25
V
December, 1999