75T202 Datasheet 5V Low Power DTMF Receiver

Manufacturer: TDK Corporation

Datasheet Details

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) and a bias resistor.

DESCRIPTION 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.

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 for reference Excellent speech immunity Output in either 4-bit hexadecimal code or binary coded 2-of-8 18-pin DIP package for high system density Synchronous or handshake interface Three-state outputs E.

Brand Logo	Part Number	Description	Manufacturer
	75T202	Single-Turn Trimmers	Vishay Intertechnology

Part Number	Description
75T203	5V Low Power DTMF Receiver
75T204	5V Low-Power Subscriber DTMF Receiver
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75T2090	DTMF Transceivers
75T2091	DTMF Transceivers