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08042755673
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08042755673
+919611268169
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Integrated Circuits by HOLTEK

HT9170B

INR 20

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Phone Number

08042755673

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Email Address sales@binarysemiconductors.com

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Address Vijay Chambers, 23-B, Tribhuvan Rd, opp. Dreamland Cinema, Grant Road East, Shapur Baug, Grant Road

Mumbai, India, 400004

Description

Features · Operating voltage: 2.5V~5.5V · Minimal external components · No external filter is required · Low standby current (on power down mode) · Excellent performance · Tristate data output for MCU interface · 3.58MHz crystal or ceramic resonator · 1633Hz can be inhibited by the INH pin · HT9170B: 18-pin DIP package HT9170D: 18-pin SOP package General Description The HT9170B/D are Dual Tone Multi Frequency (DTMF) receivers integrated with digital decoder and bandsplit filter functions as well as power-down mode and inhibit mode operations. Such devices use digital counting techniques to detect and decode all the 16 DTMF tone pairs into a 4-bit code output. Highly accurate switched capacitor filters are implemented to divide tone signals into low and high group signals. A built-in dial tone rejection circuit is provided to eliminate the need for pre-filtering.

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