LE79555-4BVC Zarlink, LE79555-4BVC Datasheet - Page 4

• Manufacturer Part Number: LE79555-4BVC
• Description: SLIC 1-CH 63dB 120mA 5V 44-Pin TQFP Tray
• Manufacturer: Zarlink

Specifications of LE79555-4BVC

• Package: 44TQFP
• Number Of Channels Per Chip: 1
• Polarity Reversal: Yes
• Longitudinal Balanced: 63(Min) dB
• Loop Current: 120 mA
• Minimum Operating Supply Voltage: 4.75 V
• Typical Operating Supply Voltage: 5 V
• Typical Supply Current: 6 mA

Le79555
Data Sheet
Ring-Trip Detector
During the Ringing state, the DA pin is more positive than the DB pin, and the DET pin will show high to indicate the on hook.
When an off hook condition occurs, the DB pin becomes more positive than the DA pin, and the DET pin will go low to indicate
an off-hook.
Ring Relay Driver
The ring relay driver is active only in the Ringing state.
Relay Driver
A relay driver is activated by logic Low at either input pin, D1, or D2. D1 controls relay driver RYOUT1; D2 controls relay driver
RYOUT2.
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Zarlink Semiconductor Inc.