M-8888-01P Clare, M-8888-01P Datasheet
M-8888-01P
Specifications of M-8888-01P
Related parts for M-8888-01P
M-8888-01P Summary of contents
Page 1
... To analyze call progress tones, a call progress filter can be select external microprocessor. Ordering Information Part # Description M-8888-01P 20-pin plastic DIP M-8888-01SM 20-pin plastic SOIC M-8888-01T 20-pin plastic SOIC,Tape and Reel Pin Connections www ...
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... Steering input/guard time output (bidirectional). A voltage greater than V the detected tone pair and update the output latch. A voltage less than V GT output acts to reset the external steering time-constant; its state is a function of ESt and the voltage on St. V Positive power supply input. ...
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... This check is performed Rev. 1 Basic Steering Circuit by an external RC time constant driven by ESt. A logic high on ESt causes V above) to rise as the capacitor discharges. Provided that the signal condition is maintained (ESt remains ...
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... Guard Time Adjustment The value device parameter and t DP minimum signal duration to be recognized by the receiver. A value for C1 of 0.1 µF is recommended for most applications, leaving selected by the designer. Different steering arrangements may be used to select independently the guard times for tone present (t ...
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... A logic 1 enables the interrupt mode. When this mode is active and the DTMF mode has been selected (b1 = 0), the IRQ/CP pin will pull to a logic 0 condition when either (1) a valid DTMF sig- nal has been received and has been present for the guard time or (2) the transmitter is ready for more data (burst mode only) ...
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... Additionally, if call progress (CP) mode has bee enabled, the burst and pause duration is increased by a factor of two. When the burst mode is not selected (logic 1), tone bursts of any desired duration may be generated. ...
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... Write to control register 0 1 Read from status register IRQ CP/DTMF TOUT S/D TEST BURST Status Flag Cleared Interrupt is inactive. Cleared after Cleared after status register is read or when not in burst mode. Cleared after status register is read. Cleared on detection of a valid DTMF signal. 7 ...
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... Current on any pin I DD Operating temperature T A Storage temperature T S Note: Exceeding these ratings may cause permanent damage. Functional operation under these conditions is not implied. DC Characteristics Parameter Operating supply voltage Operating supply current Power consumption Inputs High-level input voltage, OSC1 Low-level input voltage, OSC1 ...
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... AC Characteristics Parameter Receive signal conditions Valid input signal levels (each tone of composite signal; Notes Positive twist accept (Notes Negative twist accept (Notes Frequency deviation accept (Notes Frequency deviation reject (Notes Third tone tolerance (Notes 10) Noise tolerance (Notes 10) Dial tone tolerance (Notes 11) ...
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... DD *Typical values are for use as design aids only and are not guaranteed or subject to production testing. Notes: 1. dBm = decibels above or below a reference power into a 600 Ω load. 2. Digit sequence consists of all 16 DTMF tones. 3. Tone duration = 40 ms. Tone pause = 40 ms. 4. Nominal DTMF frequencies are used. ...
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... Test Loads Timing Diagrams Rev. 1 www.clare.com M-8888 11 ...
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... End of tone #n detected, tone absent duration valid, RX Data Register remain latched until next valid tone. (D) Tone # detected, tone duration valid, tone decoded and latched in RX Data Register. (E) Acceptable dropout of tone # tone absent duration invalid, RX Data Register remain latched. (F) End of tone # detected, tone absent duration valid, RX Data Register remain latched until next valid tone. Explanation of Symbols V DTMF composite input signal ...
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... BSC 15° 0° 15° .150 2.92 3.81 Tolerances Metric (mm) Max Min Max .104 2.35 2.65 .012 .10 .30 .020 .33 .51 .512 12.60 13.00 .299 7.39 7.59 1.27 BSC .419 10 ...
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... Clare’s product may result in direct physical harm, injury, or death to a person or severe property or environmental damage. Clare, Inc. reserves the right to discontinue or make changes to its products at any time without notice. Specification: DS-M8888-R1 ©Copyright 2001, Clare, Inc. ...