Datasheet

AC Electrical Characteristics
56F8033/56F8023 Data Sheet, Rev. 6
Freescale Semiconductor 123
measured directly on the V
CAP
pin. The specifications for this regulator are shown in Table 10-8.
10.3 AC Electrical Characteristics
Tests are conducted using the input levels specified in Table 10-5. Unless otherwise specified,
propagation delays are measured from the 50% to the 50% point, and rise and fall times are measured
between the 10% and 90% points, as shown in Figure 10-2.
Figure 10-2 Input Signal Measurement References
Figure 10-3 shows the definitions of the following signal states:
• Active state, when a bus or signal is driven, and enters a low impedance state
• Tri-stated, when a bus or signal is placed in a high impedance state
• Data Valid state, when a signal level has reached V
OL
or V
OH
• Data Invalid state, when a signal level is in transition between V
OL
and V
OH
Figure 10-3 Signal States
Table 10-8. Regulator Parameters
Characteristic Symbol Min Typical Max Unit
Short Circuit Current I
SS
— 450 650 mA
Short Circuit Tolerance
(V
CAP
shorted to ground)
T
RSC
— — 30 minutes
V
IH
V
IL
Fall Time
Input Signal
Note: The midpoint is V
IL
+ (V
IH
– V
IL
)/2.
Midpoint1
Low High
90%
50%
10%
Rise Time
Data Invalid State
Data1
Data2 Valid
Data
Tri-stated
Data3 Valid
Data2 Data3
Data1 Valid
Data Active Data Active