75T202 Datasheet (TDK) - 5V Low Power DTMF Receiver

75T202, 5V Low Power DTMF Receiver

w The 75T202 and 75T203 are complete Dual-tone Multifrequency (DTMF) receivers detecting a selectable group of 12 or 16 standard digits.

No front-end pre-filtering is needed.

The only externally required components are an inexpensive 3.58 MHz television “colorburs” crystal (for frequency reference

75T202 Features

* Central office quality NO front-end band-splitting filters required Single, low-tolerance, 5-volt supply Detects either 12 or 16 standard DTMF digits Uses inexpensive 3.579545 MHz crystal fo