MIC50395 Datasheet, PDF (6/6 Pages) Micrel Semiconductor – Six Decade Counter / Display Decoder Not Recommended for New Designs

MIC50395/50396/50397
Dynamic Operating Conditions
Symbol
Parameter
Min
Max
Units
f_CI
Count Input Frequency
0
1.00
MHz
f_SI
Scan Input Frequency
0
20
kHz
t_CPW
Count Pulse Width
400
ns
t_SPW
Store Pulse Width
2.0
µs
t_SS
Store Setup Time
0
µs
t_CIS
Count Inhibit Setup Time
0
µs
t_UDS
Up/Down Setup Time
–0.75
µs
t_CPW
Clear Pulse Width
2.0
µs
t_CS
Clear Setup Time
–0.5
µs
t_OA
Zero Access Time
3.0
µs
t_OH
Zero Hold Time
1.5
µs
t_CA
Carry Access Time
1.5
µs
t_CH
Carry Hold Time
0.9
µs
t_EA
Equal Access Time
2.0
µs
t_EH
Equal Hold Time
1.5
µs
t_L
Load Time
1/6 f_SI
Note 8: Measured at 50% duty cycle.
Note 9: If carry, equal, or zero outputs are used, the count frequency will be limited by their respective output times.
Note 10: The count pulse width must be greater than the carry access time when using the carry output.
Note 11: The positive edge of the count input is the t = 0 reference.
Note 12: Measured from negative edge of count input.
Micrel
Notes
8,9
10
11
11
11
11
11
11
11
11
12
11
11
8
August 1998
8-9