83C694 Datasheet, PDF (29/33 Pages) List of Unclassifed Manufacturers – TWISTED PAIR INTERFACE AND MACHESTER ENCODER/DECODER

83C694D
AC OPERATING CHARACTERISTICS
1.5V
LBK
t _LBS
1.5V
TXE
1.5V
t _LBH
1.5V
FIGURE 5-11. LOOPBACK TIMING
TTL/MOS OUTPUTS
50 pF
+ 5V
150 Ohm
TX+
+ 5V
150 Ohm
R*
27 µH**
+_ 1%
TX-
* R = 73 Ohm + 1% and
R = 83 Ohm + 1%
** 27 µH + 1% inductor is used for test purposes. 100 µH tranformers (Valor LT 1101, or Pulse
Engineering 64103) are recommended for application use.
TPX2+
237 Ohm
TPX1+
59 Ohm
TPX1-
59 Ohm
TPX2-
237 Ohm
FIGURE 5-12. TEST LOADS
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