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Part Number: M-8888
Description: The M-8888 is a complete DTMF Transmitter Receiver that features adjustable guard time, automatic tone...
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M-8888
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Suppliers
DataSheet
General Description
M-8888 General Description
The M-8888 is a complete DTMF Transmitter Receiver that features adjustable guard time, automatic tone burst mode, call progress mode, and a fully compatible 8051, 8086/8 microprocessor interface. The receiver portion is based on the industry standard M-8870 DTMF Receiver, while the transmitter uses a switched-capacitor digital-to-analog converter for lowdistortion, highly accurate DTMF signaling. Tone bursts can be transmitted with precise timing by making use of the automatic tone burst mode. To analyze call progress tones, a call progress filter can be selected
by an external microprocessor.
M-8888 Maximum Ratings
| Parameter | Symbol | Value |
| Power supply voltage (VDD - VSS) | VDD | +6.0 V max |
| Voltage on any pin | Vdc | VSS -0.3 V, VDD + 0.3 V |
| Current on any pin | IDD | 10 mA max |
| Operating temperature | TA | -40 to +85 |
| Storage temperature | TS | -65 to +150 |
Note: Exceeding these ratings may cause permanent damage. Functional operation under these conditions is not implied.
M-8888 Features
· Advanced CMOS technology for low power consumption and increased noise immunity
· Complete DTMF transmitter/receiver in a single chip
· Standard 8051, 8086/8 microprocessor port
· Central office quality and performance
· Adjustable guard time
· Automatic tone burst mode
· Call progress mode
· Single +5 Volt power supply
· 20-pin DIP and SOIC packages
· 2 MHz microprocessor port operation
· Inexpensive 3.58 MHz crystal
M-8888 Typical Application
· Paging systems
· Repeater systems/mobile radio
· Interconnect dialers
· PBX systems
· Computer systems
· Fax machines
· Pay telephone
· Credit card verification
M-8888 Connection Diagram
M-8888
PDF/DataSheet Download
- Datasheet: M-8888
- File Size: 462843 KB
- Manufacturer: CLARE [Clare, Inc.]
- Click here to Download
- ·M-8870
- CLARE [Clare, Inc.]
- DTMF Receiver
- 308614 KB
- ·M-8870-01
- CLARE [Clare, Inc.]
- DTMF Receiver
- 308614 KB
- ·M-8870-01SM
- CLARE [Clare, Inc.]
- DTMF Receiver
- 308614 KB
- ·M-8870-01SMTR
- CLARE [Clare, Inc.]
- DTMF Receiver
- 308614 KB
- ·M-8870-02
- CLARE [Clare, Inc.]
- DTMF Receiver
- 308614 KB
- ·M-8870-02SM
- CLARE [Clare, Inc.]
- DTMF Receiver
- 308614 KB
- ·M-8870-02T
- CLARE [Clare, Inc.]
- DTMF Receiver
- 308614 KB
- ·M-8880
- CLARE [Clare, Inc.]
- M-8880 DTMF Transceiver
- 861184 KB
M-8888 Relative Products
M-8880-01T
IC TRANSCEIVER DTMF CMOS 20-SOIC
M-8880-01SM
M-8880-01P
M-8880
M-8880functions consist ofahigh-performanceDTMFreceiver withaninternal gainsettingamplifier andaDTMFgenerator that contains a tone burst counter for generating precise tone bursts and pauses. The call progress mode, when selected, allows the detection of cal...
M-8870-02SM
M-8870-02
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