products > product profiles > MT8888C
MT8888C Integrated DTMF Transceiver with Intel Micro Interface
| Product Status - Production |
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The MT8888 is a monolithic DTMF transceiver with call progress filter. It is fabricated in CMOS technology offering low power consumption and high reliability. The receiver section is based upon the industry standard MT8870 DTMF receiver while the transmitter utilizes a switched capacitor D/A converter for low distortion, high accuracy DTMF signalling. Internal counters provide a burst mode such that tone bursts can be transmitted with precise timing. A call progress filter can be selected allowing a microprocessor to analyze call progress tones. The MT8888C utilizes an Intel micro interface, which allows the device to be connected to a number of popular microcontrollers with minimal external logic.
Product Cross Reference: When replacing the
California Micro Devices CM8888 or the
Clare M8888 with the MT8888C, RD, WR Rise and Fall time t
R, t
F need to be changed
from 25 ns to 20 ns maximum. The Address Hold Time t
AH needs to be increased
from 10 ns to 26 ns minimum. Similarly, RD to Valid Data Delay t
DDR needs to be shortened
from 150 ns to 100 ns maximum.
It is also recommended to add a 4.7 Mohm resistor between Pin OSC2 to V
SS to ensure that the crystal oscillator will start up properly.
Features
- Central office quality DTMF transmitter/receiver
- Low power consumption
- High speed Intel micro interface
- Adjustable guard time
- Automatic tone burst mode
- Call progress tone detection to -30 dBm
Typical Applications
-
Credit card systems
- Paging systems
- Repeater systems/mobile radio
- Interconnect dialers
- Personal computers
Product Information
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Product Availability and Packaging
| Ordering Part No. |
Package Type |
No. of Pins |
Lead-free Option |
Shipping Option |
Lead Time (Weeks) |
Status |
 |
| MT8888CPR |
PLCC |
28 |
|
Tape & Reel Mounted |
|
Obsolete |
| MT8888CE1 |
PDIP |
20 |
Pb-free-Matte Tin |
Tubes (Anti-static Sticks) |
4-6 weeks |
Production |
| MT8888CSR1 |
SOIC(W) |
20 |
Pb-free-Matte Tin |
Tape & Reel. Bake & Drypack |
4-6 weeks |
Production |
| MT8888CS1 |
SOIC(W) |
20 |
Pb-free-Matte Tin |
Tubes. Bake & Drypack |
4-6 weeks |
Production |
| MT8888CE |
PDIP |
20 |
|
Tubes (Anti-static Sticks) |
CONTACT ZARLINK |
Refer to leadfree product |
| MT8888CN |
SSOP |
20 |
|
Tubes (Anti-static Sticks) |
|
Obsolete |
| MT8888CSR |
SOIC(W) |
20 |
|
Tape & Reel Mounted |
26 Week(s) |
Refer to leadfree product |
| MT8888CS |
SOIC(W) |
20 |
|
Tubes (Anti-static Sticks) |
|
Obsolete |
| MT8888CPR1 |
PLCC |
28 |
Pb-free-Matte Tin |
Tape & Reel Mounted |
CONTACT ZARLINK |
Production |
| MT8888CP1 |
PLCC |
28 |
Pb-free-Matte Tin |
Tubes. Bake & Drypack |
4-6 weeks |
Production |
| MT8888CN1 |
SSOP |
24 |
Pb-free-Matte Tin |
Tubes. Bake & Drypack |
4-6 weeks |
Production |
Product Lead-Times when quoted are not guaranteed and are provided as a
general guideline only; they may be varied from time to time without
notice. Updated estimates or actual schedule commit dates will be provided
at the time of order placement with Zarlink or its distributor.
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Related Products
| Part Number | Description |
|
 MT8841 |
Calling Number Identification Circuit |
| MT8843 |
Calling Number Identification Circuit 2 |
| MT88E39 |
Extended Voltage Calling Number Identification Circuit for CLIP and CID applications (Type 1) |
| MT88E41 |
Extended Voltage Calling Number Identification Circuit (ECNIC) |
| MT88E43B |
Extended Voltage Calling Number Identification Circuit for CLIP, CID and CIDCW applications (Type 2) |
| MT88E46 |
Dual Inputs (tip/ring and 4 wire) Bellcore Compliant Extended Voltage Calling Number Identification Circuit for CID, CIDCW and CWD (Type 2 and 2.5) |
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| Copyright 2008, Zarlink Semiconductor Inc. All Rights Reserved. |
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MT8888C Integrated DTMF Transceiver
with Intel Micro Interface Data Sheet
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