97CFDC Datasheet, PDF (12/20 Pages) SMSC Corporation – USB FLOPPY DISK CONTROLLER

PARAMETER
O24 Type Buffer
SYMBOL MIN TYP MAX UNITS
COMMENTS
Low Output Level
VOL
0.4
V IOL = 24mA
High Output Level
VOH
2.4
V IOH = -12mA
Output Leakage
OD24 Type Buffer
IOL
-10
+10
µA VIN = 0 to Vcc (Note 1)
Low Output Level
VOL
0.4
V IOL = 24mA
Output Leakage
IO-U
Note 2
Supply Current Active
Supply Current
Standby
IOL
ICC
ICSBU
-10
+10
µA VIN = 0 to Vcc (Note 1)
30
75
120
300
MA All outputs open.
µA
Note 1: Output leakage is measured with the current pins in high impedance.
Note 2: See Appendix A for USB DC electrical characteristics.
CAPACITANCE TA = 25°C; fc = 1MHz; VCC = 3.3V
LIMITS
PARAMETER
SYMBOL MIN TYP MAX UNIT TEST CONDITION
Clock Input Capacitance
Input Capacitance
Output Capacitance
CIN
CIN
COUT
20 pF All pins except USB pins
10 pF (and pins under test tied
20 pF ^{to AC ground)}
AC PARAMETERS
CLOCKI
t1
t2
t2
FIGURE 1 - INPUT CLOCK TIMING
NAME
t1
t2
tr, tf
Table 2 – Input Clock Timing Parameters
DESCRIPTION
MIN
TYP
Clock Cycle Time for 14.318MHz
69.84
Clock High Time/Low Time for 24MHz
41.9/
27.9
Clock Rise Time/Fall Time (not shown)
MAX
27.9/
41.9
5
UNITS
ns
ns
ns
SMSC DS – USB97CFDC
Page 12
Rev. 12/15/2000