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HC-5504DLC Fiches technique(PDF) 4 Page - Intersil Corporation |
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HC-5504DLC Fiches technique(HTML) 4 Page - Intersil Corporation |
4 / 9 page 8-22 Specifications HC-5504DLC Uncommitted Op Amp Specifications PARAMETER CONDITIONS MIN TYP MAX UNITS Input Offset Voltage - ±5- mV Input Offset Current - ±10 - nA Input Bias Current - 20 - nA Differential Input Resistance (Note 2) - 1 - M Ω Output Voltage Swing RL = 10K, VB+ = +12V - ±5- VPEAK RL = 10K, VB+ = +5V - ±3- VPEAK Output Resistance AVCL = 1 (Note 2) - 10 - Ω Small Signal GBW (Note 2) - 1 - MHz Pin Descriptions 28 PIN PLCC 24 PIN DIP/SOIC SYMBOL DESCRIPTION 2 1 TIP An analog input connected to the TIP (more positive) side of the subscriber loop through a 150 Ω feed resistor and a ring relay contact. Functions with the Ring terminal to receive voice signals from the telephone and for loop monitoring purposes. 3 2 RING An analog input connected to the RING (more negative) side of the subscriber loop through a 150 Ω feed resistor and a ring relay contact. Functions with the Tip terminal to receive voice signals from the telephone and for loop monitoring purposes. 4 3 RFS Senses ring side of loop for ground key and ring trip detection. During ringing, the ring signal is insert- ed into the line at this node and RF is isolated from RFS via a relay. 54 VB+ Positive Voltage Source - Most positive supply. VB+ is typically 12V or 5V. 6 5 C3 Capacitor #3 - An external capacitor to be connected between this terminal and analog ground. Required for proper operation of the loop current limiting function, and for filtering VB-. Typical value is 0.3 µF, 30V. 7 6 DG Digital Ground - To be connected to zero potential and serves as a reference for all digital inputs and outputs on the SLIC microcircuit. 9 7 RS Ring Synchronization Input - A TTL - compatible clock input. The clock should be arranged such that a positive pulse transition 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 relay activates and deactivates when the instantaneous ring voltage is near zero. If synchronization is not required, the pin should be tied to +5V. 10 8 RD Relay Driver - A low active open collector logic output. When enabled, the external ring relay is energized. 11 9 TF Tip Feed - A low impedance analog output connected to the TIP terminal through a 150 Ω feed resistor. Functions with the RF terminal to provide loop current, feed voice signals to the telephone set, and sink longitudinal current. 12 10 RF Ring Feed - A low impedance analog output connected to the RING terminal through a 150 Ω feed resistor. Functions with the TF terminal to provide loop current, feed voice signals to the telephone set, and sink longitudinal current. 13 11 VB- Negative Voltage Source - Most negative supply. VB- is typically -48V with an operational range of -42V to -58V. Frequently referred to as “battery”. 14 12 BG Battery Ground - To be connected to zero potential. All loop current and some quiescent current flows into this ground terminal. 16 13 SHD Switch Hook Detection - A low active LS TTL - compatible logic output. 17 14 GKD Ground Key Detection - A low active LS TTL - compatible logic output. This output is enabled if the DC current into the ring lead exceeds the DC current out of the tip lead by more than 20mA, and dis- abled if this current difference is below an internally set threshold. 18 15 PD Power Denial - A low active TTL - Compatible logic input. When enabled, the switch hook detect (SHD) and ground key detect (GKD) are not necessarily valid, and the relay driver (RD) output is dis- abled. |
Numéro de pièce similaire - HC-5504DLC |
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Description similaire - HC-5504DLC |
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