hc55171b Intersil Corporation, hc55171b Datasheet
hc55171b
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hc55171b Summary of contents
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... Data Sheet Low Cost 5 REN Ringing SLIC for ISDN Modem/TA and WL The HC55171B low cost, 5 REN ringing SLIC is designed to accommodate a wide variety of short loop applications and provides the same degree of flexibility as the high performance HC55171. The flexible features include open circuit tip to ring DC voltages, user defined ringing waveforms, ring trip detection thresholds, and loop current limits that can be tailored for many applications ...
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... CC BAT Relay Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +15V Operating Conditions Temperature Range HC55171BIM, HC55171BIB . . . . . . . . . . . . . . . . . . -40 Relay Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V to +12V Positive Power Supply ( + Negative Power Supply (V ) ...
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... Fault Current, Ring to Ground Fault Current, Tip and Ring to Ground Switch Hook Detection Threshold Ring Trip Comparator Voltage Threshold Thermal ALARM Output Dial Pulse Distortion 65 HC55171B = -24V +5V, AGND = BGND = 0V. All AC Parameters are specified BAT CC (Continued) TEST CONDITIONS +3 to 0dBm, Referenced to -10dBm (Note 3) ...
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... This parameter directly affects device junction temperature. Refer to Power Dissipation discussion of data sheet for design information. 66 HC55171B = -24V +5V, AGND = BGND = 0V. All AC Parameters are specified BAT ...
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... RD Active (unbalanced ringing Normal Loop feed The truth table for the internal logic of the HC55171B is provided in the above table. This family of ringing SLICs can be configured to support traditional unbalanced ringing and through SLIC balanced ringing. The device operating states used by through SLIC ringing applications are loop power denial and normal feed ...
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... The crest factor of the HC55171B ringing waveform is independent of the ringing load (REN) and the loop length. Another robust feature of the HC55171B ringing SLIC is the ring trip detector circuit. The suggested values for the ring trip detector circuit cover quite a large range of applications ...
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... The SLIC control pin F1 should always be a logic high during ringing. The control pin F0 will either be a constant logic high (two detector interface logic low (single detector 69 HC55171B interface). Figure 2 shows the control interface for the dual detector interface and the single detector interface. CF RMS HC55171B 1.25 45.9 1.30 44.1 1.35 42.5 CF RMS FIGURE 1 ...
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... OUT1 HC5517B FIGURE 4. SINGLE SUPPLY CODEC INTERFACE 70 HC55171B The CODEC signal names may vary from different manufacturers, but the function provided will be the same. The DC reference from the CODEC is used to bias the ana- log signals between +5V and ground. The capacitors are required so that the DC gain is unity for proper biasing from the CODEC reference ...
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... This is the output of the tip amplifier This is the output of the ring amplifier The negative battery source. BAT 28 RTI Ring Trip Input - This pin is connected to the external negative peak detector output for ring trip detection. 71 HC55171B DESCRIPTION /2 reference. BAT ...
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... Pinouts HC55171B (PLCC) TOP VIEW SHD 7 RTD 8 TST 9 ALM LIMIT Trapezoidal Ringing Application Circuit TIP RING BAT TST FIGURE 5. TRAPEZOIDAL RINGING APPLICATION CIRCUIT 72 HC55171B RING BGND RDO ...
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... No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see web site http://www.intersil.com Sales Office Headquarters NORTH AMERICA Intersil Corporation P. O. Box 883, Mail Stop 53-204 Melbourne, FL 32902 TEL: (407) 724-7000 FAX: (407) 724-7240 73 HC55171B TOLERANCE RATING COMPONENT N/A N/A R IL2 1 1% ...