CD22203 5V Low Power DTMF Receiver

Intersil Corporation

Description

DTMF Receivers/Generators CD22202, CD22203 January 1997 5V Low Power DTMF Receiver .
The CD22202 and CD22203 complete dual-tone multiple frequency (DTMF) receivers detect a selectable group of 12 or 16 standard digits.

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Datasheet Specifications

Part number: CD22203
Manufacturer: Intersil Corporation
File Size: 49.63 KB
Datasheet: CD22203_IntersilCorporation.pdf
Description: 5V Low Power DTMF Receiver

Features

* Central Ofﬁce Quality
* No Front End Band Splitting Filters Required
* Single, Low Tolerance, 5V Supply
* Detects Either 12 or 16 Standard DTMF Digits
* Uses Inexpensive 3.579545MHz Crystal for Reference
* Excellent Speech Immunity
* Output i

Applications

* and is not normally used in telephone dialing. HEX/B28 This pin selects the format of the digital output code. When HEX/B28 is tied high, the output is hexadecimal. When tied low, the output is binary coded 2-of-8. The following table describes the two output codes. TABLE 1. OUTPUT CODES HEXADECIMA

CD22203 Distributors

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CD22203 Low Power DTMF Receiver Intersil Corporation

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