HC5526

Features:

• DI Monolithic High Voltage Process
• Programmable Current Feed (20mA to 60mA)
• Programmable Loop Current Detector Threshold and Battery Feed Characteristics
• Ground Key and Ring Trip Detection
• Compatible with Ericsson's PBL3764
• Thermal Shutdown
• On-Hook Transmission
• Wide Battery Voltage Range (-24V to -58V)
• Low Standby Power
• Meets CCITT Transmission Requirements
• -40 to 85 Ambient Temperature Range




Application

• On-Premises (ONS)
• Key Systems
• PBX
• Related Literature
- AN9537, Operation of the HC5513/26 Evaluation Board




Pinout






Specifications

Operating Temperature Range . . . . . . . . . . . . . . . . -40oC to 110oC
Power Supply (-40oC £ TA £ 85oC)
Supply Voltage VCC to GND . . . . . . . . . . . . . . . . . . . . 0.5V to 7V
Supply Voltage VEE to GND. . . . . . . . . . . . . . . . . . . . . -7V to 0.5V
Supply Voltage VBAT to GND . . . . . . . . . . . . . . . . . . . -70V to 0.5V
Ground
Voltage between AGND and BGND . . . . . . . . . . . .. . -0.3V to 0.3V
Relay Driver
Ring Relay Supply Voltage . . . . . . . . . . . . . . . ... . 0V to VBAT 75V
Ring Relay Current. . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 50mA
Ring Trip Comparator
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .. . VBAT to 0V
Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. -5mA to 5mA
Digital Inputs, Outputs (C1, C2, E0, E1, DET)
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . .... . . 0V to VCC
Output Voltage (DET Not Active) . . . . . . . . . . . . . .. . . ... 0V to VCC
Output Current (DET). . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 5mA
Tipx and Ringx Terminals (-40oC £ TA £ 85oC)
Tipx or Ringx Voltage, Continuous (Referenced to GND) VBAT to 2V
Tipx or Ringx, Pulse < 10ms, TREP > 10s . . . ... . .VBAT -20V to 5V
Tipx or Ringx, Pulse < 10ms, TREP > 10s . . .... . VBAT -40V to 10V
Tipx or Ringx, Pulse < 250ns, TREP > 10s. . . . VBAT -70V to 15V
Tipx or Ringx Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70mA
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500V




Description

The HC5526 is a subscriber line interface circuit that is compliant with CCITT standards. Enhancements include immunity to circuit latch-up during hot plug and absence of false signaling in the presence of longitudinal currents.

The HC5526 is fabricated in a High Voltage Dielectrically Isolated (DI) Bipolar Process that eliminates leakage currents and device latch-up problems normally associated with Junction Isolated (JI) ICs. The elimination of the leakage currents results in improved circuit performance for wide temperature extremes. The latch free benefit of the DI process guarantees operation under adverse transient conditions. This process feature makes the HC5526 ideally suited for use in harsh outdoor environments.