CM8870PI California Micro Devices Corporation, CM8870PI Datasheet

CM8870PI

Manufacturer Part Number

CM8870PI

Description

DIP-18

Manufacturer

California Micro Devices Corporation

Datasheets

1.CM8870PI.pdf (8 pages)

2.CM8870PI.pdf (9 pages)

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Current page: 1 of 8
Download datasheet (232Kb)

9/28/2000

Features

• Full DTMF receiver

• Less than 35mW power consumption

• Industrial temperature range

• Uses quartz crystal or ceramic resonators

• Adjustable acquisition and release times

• 18-pin DIP, 18-pin DIP EIAJ, 18-pin SOIC, 20-pin

• CM8870C

• CM8870C is fully compatible with CM8870 for 18-pin

Product Description

The CAMD CM8870/70C provides full DTMF receiver capability by integrating both the bandsplit filter and digital

decoder functions into a single 18-pin DIP, SOIC, or 20-pin PLCC package. The CM8870/70C is manufactured using

state-of-the-art CMOS process technology for low power consumption (35mW, max.) and precise data handling. The

filter section uses a switched capacitor technique for both high and low group filters and dial tone rejection. The

CM8870/70C decoder uses digital counting techniques for the detection and decoding of all 16 DTMF tone pairs into a

4-bit code. This DTMF receiver minimizes external component count by providing an on-chip differential input ampli-

fier, clock generator, and a latched three-state interface bus. The on-chip clock generator requires only a low cost TV

crystal or ceramic resonator as an external component.

PLCC

—

devices by grounding pins 5 and 6

215 Topaz Street, Milpitas, California 95035

CALIFORNIA MICRO DEVICES

Power down mode

Inhibit mode

Buffered OSC3 output (PLCC package only)

CMOS Integrated DTMF Receiver

Tel: (408) 263-3214

Applications

• PABX

• Central office

• Mobile radio

• Remote control

• Remote data entry

• Call limiting

• Telephone answering systems

• Paging systems

Fax: (408) 263-7846

www.calmicro.com

CM8870/70C

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