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MC145740

Dual Tone Multiple Frequency Line Interface

MC145740 Features

* Single Power Supply: 3.6 to 5.5 V DTMF Generator and Receiver for All 16 Standard Digits 0 dBm Line Driver Into 600 Ω Load AGC Amplifier Programmable Transmit Attenuator Serial Control Interface Power Down Mode, Less Than 1 µA 2

MC145740 General Description

TxA1 Non

*Inverting Analog Output (Pin 1) This pin is the line driver non

*inverting output. A + 7 dBm (typ) differential output voltage can be obtained by connecting a 1.2 kΩ load resistor between TxA1 and TxA2. Note that the DSI input, if used, must be controlled for the output leve.

MC145740 Datasheet (141.26 KB)

Preview of MC145740 PDF

Datasheet Details

Part number:

MC145740

Manufacturer:

Motorola

File Size:

141.26 KB

Description:

Dual tone multiple frequency line interface.
MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MC145740/D MC145740 Product Preview Dual Tone Multiple Frequency Line Interface The M.

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MC145740 Dual Tone Multiple Frequency Line Interface Motorola

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