DS2154
Figure 13-1. External Analog Connections
NOTE 1: RESISTOR VALUES ARE ±1%.
NOTE 2: THE RT RESISTORS ARE USED TO INCREASE THE TRANSMITTER RETURN LOSS OR TO PROTECT THE DEVICE FROM OVERVOLTAGE.
NOTE 3: THE RR RESISTORS ARE USED TO TERMINATE THE RECEIVE E1 LINE.
NOTE 4: FOR 75Ω TERMINATION, RR = 37.4Ω; FOR 120Ω TERMINATION RR = 60Ω.
NOTE 5: SEE THE SEPARATE APPLICATION NOTE FOR DETAILS ON HOW TO CONSTRUCT A PROTECTED INTERFACE.
NOTE 6: EITHER A CRYSTAL CAN BE APPLIED ACROSS THE MCLK AND XTALD PINS OR A TTL LEVEL CLOCK CAN BE APPLIED TO JUST MCLK.
NOTE 7: C1 AND C2 SHOULD BE 5PF LOWER THAN TWO TIMES THE NOMINAL LOADING CAPACITANCE OF THE CRYSTAL TO ADJUST FOR THE
INPUT CAPACITANCE OF THE DS2154.
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ROCHESTER [ Rochester Electronics ]
