PIC16F631/677/685/687/689/690
FIGURE 18-26:
TTL INPUT THRESHOLD VIN vs. VDD OVER TEMPERATURE
(TTL Input, -40×C TO 125×C)
1.7
Typical: Statistical Mean @25°C
Maximum: Mean (Worst Case Temp) + 3σ
(-40°C to 125°C)
1.5
1.3
1.1
0.9
0.7
0.5
Max. -40°C
Typ. 25°C
Min. 125°C
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
VDD (V)
FIGURE 18-27:
SCHMITT TRIGGER INPUT THRESHOLD VIN vs. VDD OVER TEMPERATURE
(ST Input, -40×C TO 125×C)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
VIH Max. 125°C
Typical: Statistical Mean @25°C
Maximum: Mean (Worst Case Temp) + 3σ
(-40°C to 125°C)
VIH Min. -40°C
VIL Max. -40°C
VIL Min. 125°C
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
VDD (V)
DS41262D-page 268
© 2007 Microchip Technology Inc.