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L9219A Datasheet(PDF) 7 Page - Agere Systems |
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L9219A Datasheet(HTML) 7 Page - Agere Systems |
7 / 30 page Agere Systems Inc. 7 Data Sheet November 2001 with Reverse Battery and Dual Current Limit L9219A/G Low-Cost Line Interface Absolute Maximum Ratings (at TA = 25 °C) Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso- lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Note: The IC can be damaged unless all ground connections are applied before, and removed after, all other connections. Furthermore, when powering the device, the user must guarantee that no external potential creates a voltage on any pin of the device that exceeds the device ratings. Some of the known examples of conditions that cause such potentials during powerup are the following: 1. An inductor connected to tip and ring can force an overvoltage on VBAT through the protection devices if the VBAT connection chatters. 2. Inductance in the VBAT lead could resonate with the VBAT filter capacitor to cause a destructive overvoltage. Recommended Operating Conditions Parameter Symbol Min Typ Max Unit 5 V Power Supply VCC — — 7.0 V Battery (Talking) Supply VBAT — — –75 V Logic Input Voltage — –0.5 — 7.0 V Analog Input Voltage — –7.0 — 7.0 V Maximum Junction Temperature TJ 150 — — °C Storage Temperature Range Tstg –40 — 125 °C Relative Humidity Range RH 5 — 95 % Ground Potential Difference (BGND to AGND) — — ±3 — V PT or PR Fault Voltage (dc) VPT, VPR VBAT – 5 — 3 V PT or PR Fault Voltage (10 x 1000 µs) VPT, VPR VBAT – 15 — 15 V Current into Ring Trip Inputs IRTSP, IRTSN — ±240 — µA Parameter Min Typ Max Unit Ambient Temperature –40 — 85 °C VCC Supply Voltage 4.75 5.0 5.25 V VBAT Supply Voltage –24 –48 –70 V |
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