Renesas Electronics HC5503
The HC5503 integrated solution provides higher quality, higher reliability and better performance solution than a transformer, thick film hybrid or discrete analog subscriber interface design. The HC5503 is designed in a Dielectrically isolated bipolar technology and is inherently latch proof and does not require hot plug or power supply sequencing precautions.FEATURES
● Wide Operating Battery Range (-21V to -44V)● Single Additional +5V Supply
● 25mA Short Loop Current Limit
● Ring Relay Driver
● Switch Hook and Ring Trip Detect
● Low On-Hook Power Consumption
● On-Hook Transmission
● ITU-T Longitudinal Balance Performance
● Loop Power Denial Function
● Thermal Protection
● Supports Tip, Ring or Balanced Ringing Schemes
● Low Profile Surface Mount Packaging
● Pin Compatible with Industry Standard HC5504B SLIC
● Pb-free Available
APPLICATIONS
● Analog Subscriber Line Interfaces in Analog Key Systems and Digital ISDN PABX Systems● Related Literature - AN571, Using Ring Sync with HC-5502A and HC-5504 SLICs FN4344 Rev 5.00 June 2004 Page 1 of 17 HC5503 Block Diagram RD RFS C2 TIP TF RING RF RING RELAY DRIVER RING TRIP DETECTOR 2-WIRE INTERFACE VBAT VCC AGND BGND DGND BIAS LOOP CURRENT DETECTOR THERMAL LIMIT 4-WIRE INTERFACE VF SIGNAL PATH LOGIC INTERFACE TX RX SHD RS RC PD C1 FN4344 Rev 5.00 June 2004 Page 2 of 17 HC5503 Absolute Maximum Ratin...