HD64570 Datasheet, PDF (408/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

2.0V
0.8V
2.0V
0.8V
Input signal reference level
2.4V
0.8V
2.4V
0.8V
Output signal reference level
Figure 10.24 Reference Levels with No Characteristics Specified
V_CC
Test point
R_L
C
R
Diode
R _L = 1.6 K
C = 90 pF
R = 12 k
Figure 10.25 Bus Timing Load 1 (TTL load)
V_CC
Test point
1.6 k
90 pF
Figure 10.26 Bus Timing Load 2 (open-drain load)
Rev. 0, 07/98, page 392 of 453