http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf





Clare  Inc.
Clare Inc.

M-8870-02SM Datasheet Preview

M-8870-02SM Datasheet

DTMF Receiver

No Preview Available !

M-8870-02SM pdf
Features
Low Power Consumption
Adjustable Acquisition and Release Times
Central Office Quality and Performance
Power-down and Inhibit Modes (-02 only)
Inexpensive 3.58 MHz Time Base
Single 5 Volt Power Supply
Dial Tone Suppression
Applications
Telephone switch equipment
Remote data entry
Paging systems
Personal computers
Credit card systems
Pin Configuration
Block Diagram
M-8870
DTMF Receiver
Description
The M-8870 is a full DTMF Receiver that integrates
both bandsplit filter and decoder functions into a single
18-pin DIP or SOIC package. Manufactured using
CMOS process technology, the M-8870 offers low
power consumption (35 mW max) and precise data
handling. Its filter section uses switched capacitor
technology for both the high and low group filters and
for dial tone rejection. Its decoder uses digital counting
techniques to detect and decode all 16 DTMF tone
pairs into a 4-bit code. External component count is
minimized by provision of an on-chip differential input
amplifier, clock generator, and latched tri-state inter-
face bus. Minimal external components required
include a low-cost 3.579545 MHz color burst crystal, a
timing resistor, and a timing capacitor.
The M-8870-02 provides a “power-down” option
which, when enabled, drops consumption to less
than 0.5 mW. The M-8870-02 can also inhibit the
decoding of fourth column digits (see Tone Decoding
table on page 5).
Ordering Information
Part #
M-8870-01
Description
18-pin plastic DIP
M-8870-01SM 18-pin plastic SOIC
M-8870-01SMTR 18-pin plastic SOIC, tape and reel
M-8870-02
18-pin plastic DIP, power-down,
option
M-8870-02SM
18-pin plastic SOIC, power-down,
option
M-8870-02T
18-pin plastic SOIC, power-down
option, tape and reel
DS-M8870-R3
www.clare.com
1



Clare  Inc.
Clare Inc.

M-8870-02SM Datasheet Preview

M-8870-02SM Datasheet

DTMF Receiver

No Preview Available !

M-8870-02SM pdf
M-8870
Absolute Maximum Ratings
Parameter
Symbol
Value
Power supply voltage (VDD - VSS) VDD
6.0 V max
Voltage on any pin
VDC VSS -0.3, VDD +0.3
Current on any pin
IDD 10 mA max
Operating temperature
TA -40°C to + 85°C
Storage temperature
TS -65°C to + 150°C
Note:
Exceeding these ratings may cause permanent damage. Functional operation under
these conditions is not implied.
Absolute Maximum Ratings are stress ratings. Stresses in
excess of these ratings can cause permanent damage to
the device. Functional operation of the device at these or
any other conditions beyond those indicated in the opera-
tional sections of this data sheet is not implied. Exposure of
the device to the absolute maximum ratings for an extend-
ed period may degrade the device and effect its reliability.
DC Characteristics
Parameter
Symbol
Min
Typ Max
Operating supply voltage
Operating supply current
Standby supply current (see Note 3)
Power consumption
Low level input voltage
High level input voltage
Input leakage current
Pullup (source) current on OE
Input impedance, signal inputs 1, 2
Steering threshold voltage
Low level output voltage
High level output voltage
Output low (sink) current
Output high (source) current
Output voltage VREF
Output resistance VREF
VDD
IDD
IDDQ
PO
VIL
VIH
IIH/IIL
ISO
RIN
VTSt
VOL
VOH
IOL
IOH
VREF
ROR
4.75
-
-
-
-
3.5
-
-
8
2.2
-
VDD - 0.03
1.0
0.4
2.4
-
-
3.0
-
15
-
-
0.1
6.5
10
-
-
-
2.5
0.8
-
10
5.25
7.0
100
35
1.5
-
-
15.0
-
2.5
0.03
-
-
-
2.7
-
*Typical figures are at 25°C and are for design aid only; not guaranteed and not subject to production testing.
Units
V
mA
µA
mW
V
V
µA
µA
m
V
V
V
mA
mA
V
k
Test Conditions
-
-
PD=VDD
f = 3.579 MHz, VDD = 5.0 V
-
-
VIN = VSS or VDD (see Note 2)
OE = 0 V
@ 1 kHz
-
No load
No load
VOUT = 0.4 V
VOUT = VDD - 0.4 V
No load
-
Operating Characteristics - Gain Setting Amplifier
Parameter
Symbol
Min
Typ Max
Input leakage current
Input resistance
Input offset voltage
Power supply rejection
IN
-
± 100
-
RIN 4
--
VOS - ± 25 -
PSRR
50
--
Common mode rejection
CMRR
55
--
DC open loop voltage gain
Open loop unity gain bandwidth
Output voltage swing
Tolerable capacitive load (GS)
Tolerable resistive load (GS)
Common mode range
AVOL
60
--
fC 1.2 1.5 -
VO 3.5 - -
CL - - 100
RL - - 50
VCM 2.5
--
*Typical figures are at 25°C and are for design aid only; not guaranteed and not subject to production testing.
Notes:
1. All voltages referenced to VSS unless otherwise noted. For typical values, VDD = 5.0V, VSS = 0V, TA = 25°C.
Units
nA
M
mV
dB
dB
dB
MHz
VP-P
pF
k
VP-P
2 www.clare.com
Test Conditions
VSS < VIN < VDD
-
-
1 KHz
-3.0V < VIN < 3.0V
-
-
RL 100 Kto VSS
-
-
No load
Rev. 3


Part Number M-8870-02SM
Description DTMF Receiver
Maker Clare Inc.
Total Page 9 Pages
PDF Download
M-8870-02SM pdf
Download PDF File
M-8870-02SM pdf
View for Mobile






Related Datasheet

1 M-8870-02SM DTMF Receiver Clare  Inc.
Clare Inc.
M-8870-02SM pdf




Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components