HC-5509B TM Data Sheet September 2000 File Number 2799.7 ITU CO/Loop Carrier SLIC Features The HC-5509B telephone Subscriber Line Interface Circuit integrates most of the BORSCHT functions on a monolithic IC. The device is manufactured in a Dielectric Isolation (DI) process and is designed for use as a high voltage interface between the traditional telephone subscriber pair (Tip and Ring) and the low voltage filtering and coding/decoding functions of the line card. Together with a secondary protection diode bridge and “feed” resistors, the device will withstand 1000V lightning induced surges, in plastic packages. The SLIC also maintains specified transmission performance in the presence of externally induced longitudinal currents. The BORSCHT functions that the SLIC provides are: • DI Monolithic High Voltage Process Battery Feed with Subscriber Loop Current Limiting • Switch Hook, Ground Key, and Ring Trip Detection • Overvoltage Protection • Selective Power Denial to Subscriber • Ring Relay Driver • Voice Path Active During Power Denial • Supervisory Signaling Functions • On-Chip Op Amp for 2-Wire Impedance Matching • Hybrid Functions (with External Op Amp) Applications • Test (or Battery Reversal) Relay Driver • Solid State Line Interface Circuit for PBX or Central Office Systems, Digital Loop Carrier Systems In addition, the SLIC provides selective denial of power to subscriber loops, a programmable subscriber loop current limit from 20mA to 60mA, a thermal shutdown with an alarm output and line fault protection. Switch hook detection, ring trip detection and ground key detection functions are also incorporated in the SLIC device. The HC-5509B SLIC is ideally suited for line card designs in PBX and CO systems, replacing traditional transformer solutions. Ordering Information PART NUMBER HC9P5509B-5 TEMP. RANGE (oC) 0 to 75 4-1 PACKAGE 28 Ld SOIC • Compatible with Worldwide PBX and CO Performance Requirements • Controlled Supply of Battery Feed Current with Programmable Current Limit • Operates with 5V Positive Supply (VB+) • Internal Ring Relay Driver and a Utility Relay Driver • High Impedance Mode for Subscriber Loop • High Temperature Alarm Output • Low Power Consumption During Standby Functions • Hotel/Motel Switching Systems • Direct Inward Dialing (DID) Trunks • Voice Messaging PBXs • High Voltage 2-Wire/4-Wire, 4-Wire/2-Wire Hybrid • Related Literature - AN9607, Impedance Matching Design Equations - AN9628, AC Voltage Gain - AN9608, Implementing Pulse Metering - AN549, The HC-5502S/4X Telephone Subscriber Line Interface Circuits (SLIC) PKG. NO. M28.3 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Corporation. | Copyright © Intersil Corporation 2000 HC-5509B Absolute Maximum Ratings (Note 1) Thermal Information Relay Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 15V Maximum Supply Voltages (VB+) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V (VB+)-(VB-) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75V Thermal Resistance (Typical, Note 3) θJA (oC/W) θJC (oC/W) SOIC Package . . . . . . . . . . . . . . . . . . . 72 N/A Maximum Junction Temperature Plastic . . . . . . . . . . . . . . . . .150oC Storage Temperature Range . . . . . . . . . . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . .300oC (For SMD; SOIC - Lead Tips Only) Operating Conditions Operating Temperature Range HC-5509B-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 75oC Relay Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V to 12V Positive Power Supply (VB+) . . . . . . . . . . . . . . . . . . . . . . . . 5V ±5% Negative Power Supply (VB-). . . . . . . . . . . . . . . . . . . . .-42V to -58V Loop Resistance (RL) . . . . . . . . . . . . . . . . 200Ω to 1750Ω (Note 2) Die Characteristics Transistor Count. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224 Diode Count. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Die Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 x 120 Substrate Potential. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connected Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bipolar-DI CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTES: 1. Absolute maximum ratings are limiting values, applied individually, beyond which the serviceability of the circuit may be impaired. Functional operability under any of these conditions is not necessarily implied. 2. May Be Extended to 1900Ω With Application Circuit. 3. θJA is measured with the component mounted on an evaluation PC board in free air. Electrical Specifications Unless Otherwise Specified, Typical Parameters are at TA = 25oC, Min-Max Parameters are Over Operating Temperature Range, VB- = -48V, VB+ = 5V, AG = DG = BG = 0V. All AC Parameters are specified at 600Ω 2-Wire Terminating Impedance PARAMETER TEST CONDITIONS MIN TYP MAX UNITS AC TRANSMISSION PARAMETERS RX Input Impedance 300Hz to 3.4kHz (Note 4) - 100 - kΩ TX Output Impedance 300Hz to 3.4kHz (Note 4) - - 20 Ω 4-Wire Input Overload Level 300Hz to 3.4kHz RL = 1200Ω, 600Ω Reference 1.5 - - VPEAK 2-Wire Return Loss SRL LO Matched for 600Ω (Note 4) 26 35 - dB 30 40 - dB ERL 30 40 - dB 2-Wire Longitudinal to Metallic Balance Off Hook SRL HI Per ANSI/IEEE STD 455-1976 (Note 4) 300Hz to 3400Hz 58 63 - dB 4-Wire Longitudinal Balance Off Hook 300Hz to 3400Hz (Note 4) 50 55 - dB Low Frequency Longitudinal Balance R.E.A. Test Circuit - - -67 dBmp - - 23 dBrnC Longitudinal Current Capability ILINE = 40mA, TA = 25oC (Note 4) ILINE = 40mA, TA = 25oC (Note 4) - - 30 mARMS - ±0.05 ±0.2 dB - ±0.05 ±0.2 dB Insertion Loss 2-Wire/4-Wire 0dBm at 1kHz, Referenced 600Ω 4-Wire/2-Wire - - ±0.2 dB - ±0.02 ±0.05 dB Referenced to -10dBm (Note 4) +3 to -40dBm - - ±0.05 dB -40 to -50dBm - - ±0.1 dB -50 to -55dBm - - ±0.3 dB 4-Wire/4-Wire Frequency Response 300Hz to 3400Hz (Note 4) Referenced to Absolute Level at 1kHz, 0dBm Referenced 600Ω Level Linearity 2-Wire to 4-Wire and 4-Wire to 2-Wire 4-2 HC-5509B Electrical Specifications Unless Otherwise Specified, Typical Parameters are at TA = 25oC, Min-Max Parameters are Over Operating Temperature Range, VB- = -48V, VB+ = 5V, AG = DG = BG = 0V. All AC Parameters are specified at 600Ω 2-Wire Terminating Impedance (Continued) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS 1 µs Absolute Delay 2-Wire/4-Wire (Note 4) 300Hz to 3400Hz - - 4-Wire/2-Wire 300Hz to 3400Hz - - 1 µs 4-Wire/4-Wire 300Hz to 3400Hz - - 1.5 µs Transhybrid Loss, THL (Note 4) See Figure 1 - 40 - dB Total Harmonic Distortion 2-Wire/4-Wire, 4-Wire/2-Wire, 4-Wire/4-Wire Reference Level 0dBm at 600Ω 300Hz to 3400Hz (Note 4) - - -52 dB Idle Channel Noise 2-Wire and 4-Wire (Note 4) C-Message - - 5 dBrnC Psophometric - - -85 dBmp 3kHz Flat - - 15 dBrn Power Supply Rejection Ratio VB+ to 2-Wire (Note 4) 30Hz to 200Hz, RL = 600Ω 20 29 - dB VB+ to 4-Wire 20 29 - dB VB- to 2-Wire 20 29 - dB VB- to 4-Wire 20 29 - dB 30 - - dB 30 - - dB VB- to 4-Wire 20 25 - dB VB- to 4-Wire 20 25 - dB 50 - 500 µs 20 - 60 mA 10 - - % - ±3 ±5 mA - 30 - mA RING to Ground - 60 - mA TIP and RING to Ground - 90 - mA Switch Hook Detection Threshold - 12 15 mA Ground Key Detection Threshold - 10 - mA 140 - 160 oC - 10 - mA Ring Trip Detection Period - 100 150 ms Dial Pulse Distortion - 0.1 0.5 ms VB+ to 4-Wire (Note 4) 200Hz to 16kHz, RL = 600Ω VB- to 2-Wire Ring Sync Pulse Width DC PARAMETERS Loop Current Programming Limit Range Accuracy Loop Current During Power Denial RL = 200Ω Fault Currents TIP to Ground Thermal ALARM Output Safe Operating Die Temperature Exceeded Ring Trip Detection Threshold VRING = 105VRMS, fRING = 20Hz Relay Driver Outputs On Voltage VOL Off Leakage Current IOL (PR) = 60mA, IOL (RD) = 30mA - 0.2 0.5 V VOH = 13.2V - ±10 ±100 µA TTL/CMOS Logic Inputs (F0, F1, RS, TEST, PRI) Logic ‘0’ VIL Logic ‘1’ VIH Input Current (F0, F1, RS, TEST, PRI) 4-3 0V ≤ VIN ≤ 5V - - 0.8 V 2.0 - 5.5 V - - ±100 µA HC-5509B Electrical Specifications Unless Otherwise Specified, Typical Parameters are at TA = 25oC, Min-Max Parameters are Over Operating Temperature Range, VB- = -48V, VB+ = 5V, AG = DG = BG = 0V. All AC Parameters are specified at 600Ω 2-Wire Terminating Impedance (Continued) PARAMETER Logic Outputs Logic ‘0’ VOL Logic ‘1’ VOH TEST CONDITIONS MIN TYP MAX UNITS ILOAD = 800µA - 0.1 0.5 V ILOAD = 40µA 2.7 - - V - 200 - mW Power Dissipation On Hook Relay Drivers Off IB+ VB+ = 5.25V, VB- = -58V, RLOOP = IB- VB+ = 5.25V, VB- = -58V, RLOOP = ∞ ∞ - - 6 mA -6 - - mA - ±5 - mV UNCOMMITTED OP AMP PARAMETERS Input Offset Voltage - ±10 - nA Differential Input Resistance (Note 4) - 1 - MΩ Output Voltage Swing RL = 10kΩ - ±3 - VP-P Small Signal GBW (Note 4) - 1 - MHz Input Offset Current NOTE: 4. 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 compliance. Pin Descriptions SOIC SYMBOL DESCRIPTION 1 AG (Note 5) 2 VB+ 3 C1 Capacitor #C1 - An external capacitor to be connected between this terminal and analog ground. Required for proper operation of the loop current limiting function. 4 F1 Function Address #1 - A TTL and CMOS compatible input used with F0 function address line to externally select logic functions. The three selectable functions are mutually exclusive. See Truth Table. F1 should be toggled high after power is applied. 5 F0 Function Address #0 - A TTL and CMOS compatible input used with F1 function address line to externally select logic functions. The three selectable functions are mutually exclusive. See Truth Table. 6 RS Ring Synchronization Input - A TTL - compatible clock input. The clock is arranged such that a positive pulse (50µs 500µs) occurs on the zero crossing of the ring voltage source, as it appears at the RFS terminal. For Tip side injected systems, the RS pulse should occur on the negative going zero crossing and for Ring injected systems, on the positive going zero crossing. This ensures that the ring delay activates and deactivates when the instantaneous ring voltage is near zero. If synchronization is not required, the pin should be tied to 5. 7 SHD Switch Hook Detection - An active low LS, TTL-compatible logic output. A line supervisory output. 8 GKD Ground Key Detection - An active low LS, TTL-compatible logic output. A line supervisory output. 9 TST A TTL logic input. A low on this pin will set a latch and keep the SLIC in a power down mode until the proper F1, F0 state is set and will keep ALM low. See Truth Table. 10 ALM An LS TTL-compatible active low output which responds to the thermal detector circuit when a safe operating die temperature has been exceeded. When TST is forced low by an external control signal, ALM is latched low until the proper F1, F0 state and TST input is brought high. The ALM can be tied directly to the TST pin to power down the part when a thermal fault is detected and then reset with F0, F1. See Truth Table. It is possible to ignore transient thermal overload conditions in the SLIC by delaying the response to the TST pin from the ALM. Care must be exercised in attempting this as continued thermal overstress may reduced component life. 11 ILMT Loop Current Limit - Voltage on this pin sets the short loop current limiting conditions using a resistive voltage divider. 12 OUT1 The analog output of the spare operational amplifier. 13 -IN1 Analog Ground - To be connected to zero potential. Serves as a reference for the transmit output and receive input terminals. Positive Voltage Source - most positive supply. The inverting analog input of the spare operational amplifier. 4-4 HC-5509B Pin Descriptions (Continued) SOIC SYMBOL DESCRIPTION 14 TIP An analog input connected to the TIP (more positive) side of the subscriber loop through a feed resistor and ring relay contact. Functions with the RING terminal to receive voice signals from the telephone and for loop monitoring purpose. 15 RING An analog input connected to the RING (more negative) side of the subscriber loop through a feed resistor. Functions with the TIP terminal to receive voice signals from the telephone and for loop monitoring purposes. 16 RFS Ring Feed Sense - Senses RING side of the loop for Ground Key Detection. During Ring injected ringing the ring signal at this node is isolated from RF via the ring relay. For Tip injected ringing, the RF and RFS pins must be shorted. 17 VRX Receive Input, 4-Wire Side - A high impedance analog input. AC signals appearing at this input drive the Tip Feed and Ring Feed amplifiers differentially. 18 C2 Capacitor #C2 - An external capacitor to be connected between this terminal and ground. It prevents false ring trip detection from occurring when longitudinal currents are induced onto the subscriber loop from power lines and other noise sources. This capacitor should be nonpolarized. 19 VTX Transmit Output, 4-Wire Side - A low impedance analog output which represents the differential voltage across TIP and RING. Transhybrid balancing must be performed beyond this output to completely implement 2-Wire to 4-Wire conversion. This output is referenced to analog ground. Since the DC level of this output varies with loop current, capacitive coupling to the next stage is necessary. 20 PRI A TTL compatible input used to control PR. PRI active High = PR active low. 21 PR An active low open collector output. Can be used to drive a Polarity Reversal Relay. 22 DG (Note 5) Digital Ground - To be connected to zero potential. Serves as a reference for all digital inputs and outputs on the SLIC. 23 RD Ring Relay Driver - An active low open collector output. Used to drive a relay that switches ringing signals onto the 2Wire line. 24 VFB Feedback input to the tip feed amplifier; may be used in conjunction with transmit output signal and the spare op amp to accommodate 2-Wire line impedance matching. 25 TF Tip Feed - A low impedance analog output connected to the TIP terminal through a feed resistor. 26 RF Ring Feed - A low impedance analog output connected to the RING terminal through a feed resistor. 27 VB- The battery voltage source. The most negative supply. 28 BG (Note 5) Battery Ground - To be connected to zero potential. All loop current and some quiescent current flows into this ground terminal. NOTE: 5. All grounds (AG, BG, and DG) must be applied before VB+ or VB-. Failure to do so may result in premature failure of the part. If a user wishes to run separate grounds off a line card, the AG must be applied first. 4-5 HC-5509B Pinout HC-5509B (SOIC) TOP VIEW TRUTH TABLE AG 1 28 BG VB+ 2 27 VB- C1 3 26 RF F1 4 25 TF F1 F0 0 0 Normal Loop Feed 0 1 RD Active (Ringing) 1 0 Power Down Latch RESET 0 Power On RESET 1 Loop Power Denial Active F0 5 24 VFB 1 RS 6 23 RD 1 SHD 7 22 DG GKD 8 21 PR TST 9 20 PRI ALM 10 19 VTX ILMT 11 18 C2 OUT 1 12 17 VRX -IN 1 13 16 RFS ACTION 15 RING TIP 14 Functional Diagram SOIC R TF 25 VRX R - TF + -IN 1 OUT 1 17 24 VTX DG VB+ 19 2 AG 1 22 28 - 2R BIAS NETWORK OP AMP + R/2 27 RF1 2R R VFB 13 12 4 2R R SHD TA + 2R R SH THERM LTD 4.5K 25K 100K RING 15 100K - 16 100K RTD GKD 90K LA + 100K RFS TSD GK 25K FAULT DET 4.5K 6 IIL LOGIC INTERFACE TIP 14 5 - R RF 26 RF R = 108kΩ 90K - VB/2 REF 18 3 C1 4-6 C2 GM + RF2 11 ILMT RS PRI PR 23 RD 10 + F0 21 RFC - F1 TST 20 8 90K VB- 9 7 90K BG SHD GKD ALM HC-5509B Overvoltage Protection and Longitudinal Current Protection The SLIC device, in conjunction with an external protection bridge, will withstand high voltage lightning surges and power line crosses. High voltage surge conditions are as specified in Table 1. The SLIC will withstand longitudinal currents up to a maximum or 30mARMS , 15mARMS per leg, without any performance degradation. TABLE 1. PARAMETER TEST CONDITION PERFORMANCE (MAX) UNITS Longitudinal Surge 10µs Rise/ 1000µs Fall ±1000 (Plastic) VPEAK Metallic Surge 10µs Rise/ 1000µs Fall ±1000 (Plastic) VPEAK T/GND, R/GND 10µs Rise/ 1000µs Fall ±1000 (Plastic) VPEAK 700 (Plastic) VRMS 50/60Hz Current T/GND, 11 Cycles, R/GND Limited to 10ARMS Logic Diagram RS TTL TO I2L RELAY DRIVER RD TTL TO I2L F0 I2L TO TTL GKD GK I2L TO TTL SHD THERMAL SHUT DOWN TTL TO I2L I2L TO TTL ALM F1 PD SH TTL TO I2L THERMAL SHUT DOWN LATCH TO BIAS NETWORK TEST INJ A B C KEY 4-7 A B C HC-5509B Typical Applications 5V SYSTEM CONTROLLER 5V K1 RS1 CS1 K2 PR K1A TIP SHD GKD PRI RS TEST F1 ALARM F0 RD RB2 RB1 RL2 TIP ILIMIT VRX+ SECONDARY PROTECTION (NOTE 8) RL1 VFB VBC5 FROM PCM FILTER/CODER CAC SLIC HC-5509B VTX PRIMARY PROTECTION KRF RS2 KIB -IN1 RF KZ0 CS2 RFS OUT1 TO HYBRID BALANCE NETWORK VRING RB4 150VPEAK (MAX) RB3 RING Z1 RING VB- BG C2 DG AG VB+ C1 PTC C3 C4 5V FIGURE 1. TYPICAL LINE CIRCUIT APPLICATION WITH THE MONOLITHIC SLIC Typical Component Values C1 = 0.5µF, 30V. RL1 , RL2 ; Current Limit Setting Resistors: C2 = 1.0µF ±10%, 20V (for other values of C2 , refer to AN9667). RL1 + RL2 > 90kΩ → offset. C3 = 0.01µF, 100V, ±20%. ILIMIT = (0.6) (RL1 + RL2)/(200 x RL2), RL1 typically 100kΩ. KRF = 20kΩ, RF = 2(RB2 + RB4), K = Scaling Factor = 100). C4 = 0.01µF, 100V, ±20%. C5 = 0.01µF, 100V, ±20%. RB1 = RB2 = RB3 = RB4 = 50Ω (1% absolute, matching requirements covered in a Tech Brief). CAC = 0.5µF, 20V. RS1 = RS2 = 1kΩ, typically. KZ0 = 60kΩ, (Z0 = 600Ω, K = Scaling Factor = 100). CS1 = CS2 = 0.1µF, 200V typically, depending on VRing and line length. Z1 = 150V to 200V transient protector. PTC used as ring generator ballast. All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification. Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. 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 www.intersil.com 4-8