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- (222) Sun 3 Nov 91 22:02
- By: Harold Hallikainen
- To: All
- Re: Caller ID Chip from Motorola
- St:
- ------------------------------------------------------------------------------
- @PTH 1:340/201.0@Fidonet
- From: hhallika@nike.calpoly.edu (Harold Hallikainen)
- Newsgroups: comp.dcom.telecom
- Subject: Caller ID Chip from Motorola
- Organization: TELECOM Digest
-
- {Electronic Engineering Times}, 28 October 1991, page 79
-
- Motorola's MOS digital-analog IC division has entered the
- telephone-caller identification market with a highly integrated CMOS
- chip designed to demodulate the Bell 202 1,200-baud frequency-shift-
- keying asynchronous data.
-
- The primary use for the MC145447 is in telephone adjunct boxes
- and telephone products that can receive and display the calling number
- or message-waiting indicators that's been sent to subscribers from
- participating central-office facilities of the public-switched
- network. The device contains a carrier-detect circuit and a ring
- detector that can be used to power-up the device.
-
- The chip operates from a single supply of 3.5 V to 6 V. The
- pin-selectable clock frequencies are 3.68 MHz, 3.58 MHz or 455 KHz.
-
- In quantities of 1,000, the caller-ID chip goes for 2.23 each.
- In quantities of 25,000, the price drops to $1.88 per unit.
-
- More info, call Dave Kolkman, 512 928 6733
-
- --------
-
- Note also that Yamaha has what they are calling a "Vodem" chip
- that does standard 2400 bps data modem communications, 9600 bps fax
- send/receive, DTMF detection and generation, voice generation
- (probably thru digitized voice instead of synthesis), and Caller-ID.
-
-
- Harold
-
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