HC5515 Intersil Corporation, HC5515 Datasheet
HC5515
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HC5515 Summary of contents
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... Data Sheet ITU CO/PABX SLIC with Low Power Standby The HC5515 is a subscriber line interface circuit which is interchangeable with Ericsson’s PBL3860 for distributed central office applications. Enhancements include immunity to circuit latch-up during hot plug and absence of false signaling in the presence of longitudinal currents. ...
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... V TRO I DCMET 23mA RING RSN 28 16 FIGURE 1. OVERLOAD LEVEL (TWO-WIRE PORT) 56 HC5515 Thermal Information Thermal Resistance (Typical, Note 150 C 22 Lead PDIP Package . . . . . . . . . . . . . . . . . . . . . . 110 C 28 Lead PLCC Package ...
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... FIGURE 4. LONGITUDINAL TO METALLIC AND LONGITUDINAL TO 4-WIRE BALANCE 2-Wire Return Loss C = 20nF HP TIP IDLE VOLTAGE Active Standby RING IDLE VOLTAGE Active HC5515 +5V 5 -5V 5 10nF CONDITIONS No False Detections, (Loop Current), LB > ...
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... FREQUENCY RESPONSE (OFF-HOOK) 2-Wire to 4-Wire 4-Wire to 2-Wire 4-Wire to 4-Wire INSERTION LOSS 2-Wire to 4-Wire 4-Wire to 2-Wire GAIN TRACKING (Ref = -10dBm, at 1.0kHz) 2-Wire to 4-Wire 2-Wire to 4-Wire 2-Wire to 4-Wire 4-Wire to 2-Wire 58 HC5515 +5V 5 -5V 5 10nF ...
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... BATTERY FEED CHARACTERISTICS Constant Loop Current Tolerance R = 41.2k DCX Loop Current Tolerance (Standby) Open Circuit Voltage ( TIP RING LOOP CURRENT DETECTOR On-Hook to Off-Hook Off-Hook to On-Hook Loop Current Hysteresis 59 HC5515 +5V 5 -5V 5 10nF ...
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... BAT Open Circuit State (C1 On-Hook Standby State (C1 On-Hook Active State (C1 On-Hook PSRR 4-Wire Port 4-Wire Port EE 60 HC5515 +5V 5 -5V 5 10nF ...
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... L 600 Circuit Operation and Design Information The HC5515 is a current feed voltage sense Subscriber Line Interface Circuit (SLIC). This means that for short loop applications the SLIC provides a programed constant current to the tip and ring terminals while sensing the tip to ring voltage. ...
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... RESISTIVE FEED REGION LOOP CURRENT (mA) R 100k 100k 1.5k 700 L FIGURE 14 HC5515 + - LOOP CURRENT CIRCUIT I TIP I RING - SATURATION GUARD + CIRCUIT -5V FIGURE 12. DC LOOP CURRENT The Saturation Guard circuit (Figure 12) monitors the tip ...
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... SLIC tip and ring terminals the AC metallic current fuse resistor used to set the SLIC’s 2-wire impedance HC5515 the analog ground referenced receive signal used to set the 4-wire to 2-wire gain the AC open circuit voltage, and ...
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... TR ), the L Given: R value), R (EQ. 19) The value (EQ. 20) HC5515 ), thereby equals I . Node 1 2 Supervisory Functions The loop current and the ring trip detector outputs are (EQ. 21) multiplexed to a single logic output pin called DET. See Table 1 to determine the active detector for a given logic input. For further discussion of the logic circuitry see section titled “ ...
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... DET pin is low for more that half the time the off-hook condition is indicated. (EQ. 25 COMPARATOR HC5515 FIGURE 17. LOOP CURRENT DETECTOR 375 OFF HOOK to ON – – HOOK ) in parallel with R will improve the Software can examine the duty cycle RT ...
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... HC5515 Digital Logic Inputs Table 1 is the logic truth table for the TTL compatible logic input pins. The HC5515 has an enable input pin (E0) and two control inputs pins (C1, C2). The enable pin E0 is used to enable or disable the DET output pin. The DET pin is enabled logic level 0 and disabled logic level 1 ...
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... HP when the line in exposed to a power cross. Power-Up Sequence The HC5515 has no required power-up sequence. This is a result of the Dielectrically Isolated (DI) process used in the fabrication of the part. By using the DI process, care is no (EQ. 28) longer required to insure that the substrate be kept at the most negative potential as with junction isolated ICs ...
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... Output Offset Voltage - The output offset voltage is specified with the following conditions and is measured DCMET 68 HC5515 in Figure 7. Note: I resistor between tip and ring. overload level is 14. Two-Wire to Four-Wire (Metallic to V 2-wire to 4-wire (metallic 30mA using the following equation ...
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... V Transmit audio output. This output is equivalent to the TIP to RING metallic voltage. The network for programming the TX 2-wire input impedance connects between this pin and RSN. 69 HC5515 = 23mA and is at 1kHz, I DCMET (Reference Figure 7). 26. Harmonic Distortion (4-Wire to 2-Wire) - The harmonic dis- tortion is measured with the following conditions ...
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... HPR. HP sets the trigger level for the loop current detect circuit. A filter capacitor N HPT 20 HPR HC5515 (PDIP) TOP VIEW HPT 1 22 HPR RSN TIPX 5 18 AGND ...
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... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. 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 71 HC5515 C (NOTE 32) HP ...