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PDF SM8224B Data sheet ( Hoja de datos )
| Número de pieza | SM8224B | |
| Descripción | Dual-Tone Receiver IC | |
| Fabricantes | Nippon Precision Circuits Inc | |
| Logotipo |  |
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NIPPON PRECISION CIRCUITS INC.
SM8224B
Dual-Tone Receiver IC
OVERVIEW
The SM8224B is a receiver and decoder that supports the Bellcore TR-NWT-000030 and SR-TSV-002476
standards calling number identification (caller ID) and call waiting dual-tone signals. It has separate caller ID
signal and call waiting signal inputs, which allows the gain for each input to be adjusted independently. It is
fabricated in CMOS and features a power-down function, realizing low power dissipation operation.
FEATURES
s TR-NWT-000030 and SR-TSV-002476 standards
(Bellcore)
s Call waiting
s FSK decoder
s High input sensitivity
s Independent input gain adjustment for caller ID
signal and call waiting signal inputs
s Power-down mode
s Crystal oscillator circuit built-in
s Single supply operation:4.5 to 5.5V
s Molybdenum-gate CMOS process
APPLICATIONS
s Telephones, fax machines and modems that sup-
port pre- and mid-conversation information ser-
vices
s Adapters for pre- and mid-conversation informa-
tion service functions
s Telephone answering machines
s Facsimile machines
s Computer peripheral equipment
PINOUT
(Top view)
AGND
TIP
RING
TRQ
GND
OSCIN
OSCOUT
MODE
TEST
DOUT
1
10
20 DT1
DT2
DTQ
S0
S1
VDD
CDET
CR
DTDET
11 STR
ORDERING INFORMATION
Device
SM8224BM
SM8224BS
Package
20-pin SSOP
20-pin SOP
NIPPON PRECISION CIRCUITS—1
1 page  
SM8224B
SPECIFICATIONS
Absolute Maximum Ratings
GND = 0V
Parameter
Supply voltage range
Input voltage range
Power dissipation
Storage temperature range
Symbol
VDD
V IN
PD
T stg
Condition
Rating
− 0.5 to 7.0
− 0.3 to VDD + 0.3
44
−40 to 125
Recommended Operating Conditions
GND = 0V
Parameter
Supply voltage
Clock frequency
Clock frequency accuracy
Operating temperature
Symbol
VDD
fC L K
∆fC
Topr
Condition
Rating
min typ max
4.5 – 5.5
– 3.579545 –
−0.1 – +0.1
−20 –
85
Electrical Characteristics
VDD = 5.0V ± 0.5V, GND = 0V, fCLK = 3.579545MHz, Ta = −20 to 85°C unless otherwise noted.
Parameter
Symbol
Condition
Rating
min typ max
Supply current consumption
Power-down current
MODE, S0, S1 LOW -level input
voltage
ID D
No analog signal input, no output load,
S1 = 0V, S0 = V D D, MODE = 0V
No analog signal input, other inputs =
ID P D V D D or 0V, no output load, S1 = 0V,
S0 = 0V, MODE = V D D
V IL1
–
–
–
– 8.0
– 15
– 0.3VDD
MODE, S0, S1 HIGH-level input
voltage
V IH1
0.7VDD
–
–
OSCIN LOW -level input voltage
OSCIN HIGH-level input voltage
D O U T, S T R , DTDET, CR, C D E T
L OW -level output current
V IL2
V IH2
IO L
– – 0.3VDD
0.7VDD
–
–
2––
D O U T, S T R , DTDET, CR, C D E T
HIGH-level output current
IO H
– – −0.8
TIP, RING, DT1, DT2, MODE, S1,
S0 input leakage current
II N
−1 –
1
Unit
V
V
mW
°C
Unit
V
MHz
%
°C
Unit
mA
µA
V
V
V
V
mA
mA
µA
NIPPON PRECISION CIRCUITS—5
5 Page 
SM8224B
NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to
improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility for
the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits
are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision
Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification.
The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or
malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter,
including compliance with export controls on the distribution or dissemination of the products. Customers shall not export, directly or
indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies.
NIPPON PRECISION CIRCUITS INC.
NIPPON PRECISION CIRCUITS INC.
4-3, Fukuzumi 2-chome
Koto-ku, Tokyo 135-8430, Japan
Telephone: 03-3642-6661
Facsimile: 03-3642-6698
NC9910AE 2000.02
NIPPON PRECISION CIRCUITS—11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet SM8224B.PDF ] | |
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