STLC3055N STMicroelectronics, STLC3055N Datasheet - Page 30

• Manufacturer Part Number: STLC3055N
• Manufacturer: STMicroelectronics

Specifications of STLC3055N

• Number Of Channels: 1
• On-hook Transmission: Yes
• Polarity Reversal: Yes
• On-chip Ring Relay Driver: No
• Longitudinal Balanced: 58
• Operating Supply Voltage (typ): 9V
• Operating Temp Range: -40C to 85C
• Package Type: TQFP
• Loop Current Limit: 40mA
• Operating Temperature Classification: Industrial
• Pin Count: 44
• Mounting: Surface Mount
• Operating Current: 55mA
• Operating Supply Voltage (max): 12V
• Operating Supply Voltage (min): 5.5V
• Lead Free Status / RoHS Status: Not Compliant

Typical state diagram for STLC3055N operation
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Typical state diagram for STLC3055N operation
Figure 21. State diagram
Note: all state transitions are under the microprocessor control.
On Hook Condition
PD=1,
D0=D1=0
Tj>Tth
Power
Down
Feeding
HI-Z
Off Hook Detection
PD=0, D0=D1=0
On Hook Detection for T>Tref
D0=1, D1=0,
D2=0/1
Ring Burst
Off Hook
D0=0, D1=1,
D2=0
Active
Ring Burst
Normally used for
On Hook Transmission
On Hook
Active
Off Hook Detection
Ringing
Ring Trip
Detection
D0=0, D1=1,
D2=0
Ring Pause
STLC3055N