Bell 202 and V.23 Compatible Modem
23
CMX624 Preliminary Information
3.5
3
2.5
2
Vin
1.5
1
Vthi
0.5
Vtlo
0
2.5
3
3.5
4
4.5
5
5.5
Vdd
Figure 15: Typical Schmitt Trigger Input Voltage Thresholds vs. VDD
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