HC5503 Intersil Corporation, HC5503 Datasheet
HC5503
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HC5503 Summary of contents
Page 1
... Low Cost 24V SLIC For PABX/Key Systems The Intersil HC5503 low cost SLIC is optimized for use in small Analog or mixed Analog and Digital Key Telephone Systems (KTS) or PBX products. The low component count solution and surface mount package options, enable a small desktop Key System/PBX product to be achieved. The ...
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... CC BAT Relay Drive Voltage ( -0.5 to 15V RD Operating Conditions Operating Temperature Range HC5503 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 Relay Driver Voltage ( 12V RD Positive Supply Voltage ( 4.75V to 5.25V CC Negative Supply Voltage (V ) ...
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... V to Transmit 2-Wire BAT V to Transmit BAT Logic Input Current (RS, RC, PD) 3 HC5503 = -24V 5V 0V, Typical Parameters BAT CC C. Min-Max Parameters are Over Operating Temperature Range (Continued) CONDITIONS Referenced to 600 +2.16 F (Note 4) 1V 200Hz - 3400Hz, (Note 4) IEEE Method RMS ...
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... These parameters are controlled by design or process parameters and are not directly tested. These parameters are characterized upon initial design release, upon design changes which would affect these characteristics, and at intervals to assure product quality and specification com- pliance. 5. Guaranteed by design, not tested. 4 HC5503 = -24V 5V 0V, Typical Parameters BAT CC C ...
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... AC audio currents to flow around the loop which are then AC coupled to the earpiece of the telephone set. 2-Wire Impedance Matching The HC5503 is optimized for operation with a -24V battery. Impedance matching to a 600 load, is achieved through the combination of the feed resistors (R negative feedback through resistor R ...
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... SHD threshold listed in the electrical specifications. The additional synthesized resistance is determined by the feed back factor X (Equation 4) which needs to be applied to the transmit output and fed into the RX pin of the HC5503. The feed back factor is equal to the voltage divider between R2 and the parallel combination and R , reference Figure 2 ...
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... R (90k ), R (150k ), R (24.9k ) and is equal INTERNAL 17.25k . 7 HC5503 V RX Equations 15 and 16. For impedance matching to a load other than 600 , recalculate the parallel impedances determine the R and substitute into Equation 15. The 4-wire to 2-wire in terms ...
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... Thus, a need exists to control the maximum DC loop current that can flow around the loop to prevent an excessive current drain from the system battery. This limit is internally set to 30mA on the HC5503. Figure 3 depicts the feedback network that modifies the V voltage as a function of metallic current. RF Figure 4 illustrates the loop current characteristics as a function of line resistance ...
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... SHD will become active as loop metallic current starts to flow. In addition to its ability to be used for tip or ring injected systems, the HC5503 can also be configured for systems utilizing balanced ringing. The main advantage of balanced ringing is that it tends to minimize cross coupling effects owing to the differential nature of the ring tone across the line ...
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... V IN Figures 10 shows the application circuit for the HC5503 secondary protection diode bridge is indicated which protects the feed amplifiers during a fault. Most line systems will have primary protection networks. They often take the CODEC/ form of a carbon block or arc discharge device ...
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... NOTE: All grounds (AG, BG, and DG) must be applied before V wishes to run separate grounds off a line card, the AG must be applied first. 11 HC5503 DESCRIPTION is typically 5V typically -24V. Frequently referred to as “battery”. BAT ) input, as long as the SLIC is not in the power denial ...
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... Pinouts HC5503 (SOIC) TOP VIEW TIP 1 RING 2 RFS BAT BG 12 Functional Block Diagram RING SYNC RING COMMAND 1/2 RING TIP RELAY 2-WIRE LOOP SECONDARY PROTECTION V BAT RFS 1/2 RING RELAY RING RING POWER DENIAL ...
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... A-300 RF RING FEED AMP BAT HC5503 PLCC PIN NUMBERS SHOWN BAT ANA DIG C2 V BAT GND GND GND V CC VOLTAGE AND CURRENT BIAS NETWORK ...
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... High voltage surge conditions are as specified in Table 1. The SLIC will withstand longitudinal currents maximum or 10mA , 5mA per leg, without any RMS RMS performance degradation. 14 HC5503 LOGIC GATE SCHEMATIC TTL ...
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... 150 (1% absolute value HC5503 SYSTEM CONTROLLER + SHD TIP R B1 TIP FEED HC5503 V BAT U1 D -24V 3 (PINOUT FOR PLCC) 12 RING FEED RING FEED SENSE RING 3 -BAT BGND DGND BAT -24V = 0dB ...
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... 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 16 HC5503 EUROPE Intersil SA Mercure Center 100, Rue de la Fusee 1130 Brussels, Belgium TEL: (32) 2.724.2111 FAX: (32) 2.724.22.05 ASIA Intersil (Taiwan) Ltd ...