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Ordering number:ENN4367
CMOS IC
LC73860
DTMF Receiver IC
Overview
The LC73860 is a DTMF signal detector receiver that incorporates all the necessary filters for telephone answering machines.
Package Dimensions
unit:mm 3001C-DIP8
[LC73860]
9.14 8 5
Features
* 16-DTMF tone signal decoder. * DTMF receiver with all necessary filters built-in. * Dial tone filter. * High-group bandpass filter. * Low-group bandpass filter. * Extended dynamic range. * Serial data output. * Microcontroller guard-time compatible. * 4.5 to 5.5V operating supply voltage range. * Available in 8-pin plastic DIPs (300 mil).
7.62 6.4
1.0
1
4
3.9max (3.0)
0.51min
0.5 (0.76) 2.54
1.4
3.2
SANYO : DIP8
Specifications
Absolute Maximum Ratings at Ta=252C, VSS=0V
Parameter Maximum supply voltage Input voltage Input current Output voltage Allowable power dissipation Operating temperature Storage temperature Symbol VDD max VIN max IIN max VOUT max Pd max Topr Tstg Ta85C Conditions Ratings -0.3 to +6.0 -0.3 to VDD+0.3 -10 to +10 -0.3 to VDD+0.3 500 -40 to +85 -50 to +125 Unit V V mA V mW C C
Recommended Operating Conditions at Ta=-40 to +85C, VSS=0V
Parameter Operating supply voltage Input HIGH-level voltage Input LOW-level voltage Symbol VDD VIH VIL ACK pin PD pin ACK pin PD pin Conditions Ratings min 4.5
0.7VDD
0.85VDD
0.25
typ
max 5.5
Unit V V V
0.3VDD
0.15VDD
V V
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other parameters) listed in products specifications of any and all SANYO products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
51001TN (KT)/90793JN A8-9771 No.4367-1/5
LC73860
DC Electrical Characteristics at Ta=252C, VDD=5V, VSS=0V
Parameter Operating supply current Standby supply current Output HIGH-level current Output LOW-level current Input impedance Symbol IDD(op) IDD(st) IOH IOL Zin VPD=5V VOUT=4.6V, SD and EST pins VOUT=0.4V, SD and EST pins INPUT pin 1 10 Conditions Ratings min typ 3.0 max 7.0 10 -0.4 Unit mA A mA mA k
AC Electrical Characteristics at Ta=252C, VDD=5V, VSS=0V, fOSC=4.194304MHz
Parameter Valid input signal level Positive twist accept Frequency deviation accept Frequency deviation reject Third tone tolerance Dial tone tolerance Noise tolerance Tone present detect time Tone absent detect time Data shift rate Data output delay time Setup time delay Data hold time Oscillator frequency tPAD tDL tDH fOSC See timing chart. See timing chart. See timing chart. 0 30 4.152362 4.194304 4.236247 100 tDP tDA Symbol Conditions See notes 1, 2, 3, 5, 6 and 9. See notes 2, 3, 4, 9 and 11. See notes 2, 3, 5 and 9. See notes 2, 3 and 5. See notes 2, 3, 4, 5, 9 and 10. See notes 2, 3, 4, 5, 8, 9 and 10. See notes 2, 3, 4, 5, 8, 9 and 10. See timing chart. See timing chart. 3 0.5 1.5%2 3.5 -16 22 -12 20 20 1 Ratings min -49.5 6 typ max 0 Unit dBm dB Hz % dB dB dB ms ms MHz ns ns ns MHz
Notes 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
0dBm=1mW power when driving a 600 load. All 16 DTMF signal frequencies. 40ms DTMF signal period and 40ms pause period. Nominal DTMF frequency. Low-frequency group and High-frequency group signal levels are the same. DTMF signal frequency deviation is within 1.5% 2Hz. Bandwidth limited (0 to 3kHz) Gaussian noise. 350Hz and 440Hz dial tone frequencies. Error rate of less than 1 in 10,000. Referenced to the lowest frequency component of the DTMF signal. Twist=High-frequency group tone level / Low-frequency group tone level.
Pin Assignment
No.4367-2/5
LC73860
Block Diagram
Pin Functions
Number 1 2 3 4 5 6 7 8 Name INPUT PD OSCI VSS SD ACK EST VDD O I O O I/O I I I Description Input coupling capacitor connection. Biased internally to VDD/2. Power-down mode is selected when HIGH. 4.194304MHz external clock input. Ground (0V). Outputs the 4-bit serial, decoded DTMF output, least significant bit first. Shift data to SD control. Four pulses are used to output the 4-bit DTMF code. Before the first rising edge, the data is latched into the shift register. Indicates the presence of a DTMF signal when HIGH. This pin can be monitored and after a short delay, data can be accessed by applying 4 pulses to ACK. 4.5 to 5.5V supply voltage.
Test/Application Circuit
No.4367-3/5
LC73860
Output Code Table
FL 697 697 697 770 770 770 852 852 852 941 941 941 697 770 852 941 FH 1209 1336 1477 1209 1336 1477 1209 1336 1477 1336 1209 1477 1633 1633 1633 1633 # A B C D KEY 1 2 3 4 5 6 7 8 9 0 b3 L L L L L L L H H H H H H H H L b2 L L L H H H H L L L L H H H H L b1 L H H L L H H L L H H L L H H L b0 H L H L H L H L H L H L H L H L
DTMF Dialing Matrix
Timing Chart
No.4367-4/5
LC73860
Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products(including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be expor ted without obtaining the expor t license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of May, 2001. Specifications and information herein are subject to change without notice.
PS No.4367-5/5

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