Description
The 75T204 is a complete Dual-Tone Multifrequency
(DTMF) receiver that detects 16 standard digits.No
front-end pre-filtering is needed.The only external
components required are an inexpensive 3.58-MHz
television “colorburst” crystal for frequency reference
and a bias resistor.An Alternate Time Base (ATB)
is provided to permit operation of up to 10 75T204's
from a single crystal.The 75T204 employs state-of-
the-art "switched-capacitor" filter technology,
resulting in approximately 4
Features
- April 2000.
- Intended for.
75T204_ETC.pdf
