ST3938B, ST3938A - SPEECH - TONE/PULSE DIALER - LED INDICATOR

STMicroelectronics

Datasheet Details

Part number	ST3938B, ST3938A
Manufacturer	STMicroelectronics ↗
File Size	206.81 KB
Description	SPEECH - TONE/PULSE DIALER - LED INDICATOR
Datasheet	ST3938A_STMicroelectronics.pdf
Note	This datasheet PDF includes multiple part numbers: ST3938B, ST3938A. Please refer to the document for exact specifications by model.

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.

📁 ST3938B Similar Datasheet

ST390-60T3MI - Wet Tantalum Capacitors (Vishay)
ST3000GXH35A - Silicon N-Channel IEGT (Toshiba)
ST300C - PHASE CONTROL THYRISTORS (International Rectifier)
ST300S - PHASE CONTROL THYRISTORS (International Rectifier)
ST301 - Temperature Controller User Handbook (Stafford)
ST3010 - (ST30xx) Connector (Hartmann Codier GmbH)
ST30100 - (ST3020 - ST30100) Silicon Dual Power Rectifier (Microsemi Corporation)
ST30120C - SCHOTTKY RECTIFIER (SMC Diode)

Other Datasheets by STMicroelectronics

Published: Jul 16, 2008 |