75T203 receiver equivalent, 5v low power dtmf receiver.
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* Central office quality NO front-end band-splitting filters required Single, low-tolerance, 5-volt supply.
and is not normally used in telephone dialing.
Col 0 Row 0 1 Col 1 2 Col 2 3 Col 3 A
Row 1
4
5
6
B
Row 2
7
8
9
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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 telev.
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