CMX909BD5 Integrated Circuit Chip GMSK Packet Data Modem

Features

• GMSK Modulation/Demodulation

• On-chip Packet Detection • Rx or Tx up to 38.4kbits/sec

• Parallel Host Processor Interface

• Full and Short Data Packet Framing

• Low Power 3.0V/5.0V Operation

• Mobitex Compatible including R14N Short Block Frames

• Flexible Operating and Powersave Modes

7.1.1. Absolute Maximum Ratings Exceeding these maximum ratings can result in damage to the device.

Min. Max. Units Supply (VDD - VSS) -0.3 7.0 V Voltage on any pin to VSS -0.3 VDD + 0.3 V

Current into or out of VDD and VSS pins -30 +30 mA Current into or out of any other pin -20 +20 mA



E2 Package Min. Max. Units Total Allowable Power Dissipation at Tamb = 25°C - 1000 mW ... Derating - 10.0 mW/°C Storage Temperature -55 +125 °C Operating Temperature -40 +85 °C



D5 Package Min. Max. Units Total Allowable Power Dissipation at Tamb = 25°C - 1490 mW ... Derating - 14.9 mW/°C Storage Temperature -55 +125 °C Operating Temperature -40 +85 °C



P4 Package Min. Max. Units Total Allowable Power Dissipation at Tamb = 25°C - 1660 mW ... Derating - 16.6 mW/°C Storage Temperature -55 +125 °C Operating Temperature -40 +85 °C


7.1.2. Operating Limits Correct operation of the device outside these limits is not implied.

Notes Min. Max. Units Supply (VDD - VSS) 2.7 5.5 V Operating Temperature -40 +85 °C Xtal Frequency 1.0 10.0 MHz

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