Freescale Semiconductor, Inc.
VBAT
SLEEP
Tx
Rx
4X/LOOP
4.5 V
Reference
Digital Output
Driver
33390
Voltage
Regulator
Waveshaping
Filter
4X Enable
Loopback
Bus
Driver
Thermal
Shutdown
BUS
Loss of Ground
Protection
LOAD
GND
Note This device contains approximately 400 active transistors and 250 gates.
Figure 1. 33390 Simplified Block Diagram
33390
2
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