جهت استعلام قیمت با 66712131 تماس بگیرید
•package: DIP-8
• Brand : MOTOROLA
•Complete Telephone Bell Replacement Circuit with Minimum External Components.
* On-Chip Diode Bridge and Transient Protection.
• Direct Drive for Piezoelectric Transducers.
* Push Pull Output Stage for Greater Output Power Capability.
* Base Frequency : 1 KHz
* Input Impedance Signature Meets Bell and ElA Standards.
• Reject Rotary Dial Transients.
The tone ringer output terminals through which the sound element is driven.
•Pin 3 RI
The positive supply terminal for the oscillator , frequency divider and output buffer circi
•Pin 4 RS
The input of the threshold comparator to which diode bridge current is mirrored and sensed through an internal resistor. Nominal threshold is 1.2 volts. This pin internally clamps at 1.5 volts.
•Pin 5 RC
The oscillator terminal for the external resistor which controls the tone ringer frecuenc (R2).
•Pin 6 RG
The negative terminal of the diode bridge and the negative supply terminal of the tone generating circuit.
•Pin 7 AC2 , Pin 8 AC1
The input terminals to the full-wave diode bridge. The AC ringing signal from the telephone line energizes the ringer through this bridge.
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تهران -خ جمهوری - پاساژ امجد - طبقه زیر همکف - شماره 25
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