ST3938A - SPEECH - TONE/PULSE DIALER - LED INDICATOR

STMicroelectronics

Datasheet Details

Part number	ST3938A
Manufacturer	STMicroelectronics ↗
File Size	206.81 KB
Description	SPEECH - TONE/PULSE DIALER - LED INDICATOR
Datasheet	ST3938A_STMicroelectronics.pdf

The device consists of the speech and the dialer functions.

provided by the PABX or central office. The PAUSE key stores a timed pause in the number sequence. Redial is then delayed until an outside line can be accessed or some other activities occur before normal signalling resumes. A LND key automatically redials the last number dialed. Adedicatedpin MU/MFI is used to select the muting for transmit amplifier and lighted dial LED for keyboard illumination or a LEDindicator for tonemode indication. The SEL pin allows selection of any one of the four poss.

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Published: Jul 16, 2008 |