A.c. characteristics, Ht93lc46 – Rainbow Electronics HT93LC46 User Manual
Page 4
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A.C. Characteristics
Symbol
Parameter
VCC=5V
±
10%
VCC=3V
±
10%
VCC=2V*
Unit
Min.
Max.
Min.
Max.
Min.
Max.
f
SK
Clock Frequency
0
2000
0
500
0
250
kHz
t
SKH
SK High Time
250
—
1000
—
2000
—
ns
t
SKL
SK Low Time
250
—
1000
—
2000
—
ns
t
CSS
CS Setup Time
50
—
200
—
200
—
ns
t
CSH
CS Hold Time
0
—
0
—
0
—
ns
t
CDS
CS Deselect Time
250
—
250
—
1000
—
ns
t
DIS
DI Setup Time
100
—
200
—
400
—
ns
t
DIH
DI Hold Time
100
—
200
—
400
—
ns
t
PD1
DO Delay to “1”
—
250
—
1000
—
2000
ns
t
PD0
DO Delay to “0”
—
250
—
1000
—
2000
ns
t
SV
Status Valid Time
—
250
—
250
—
—
ns
t
HV
DO Disable Time
100
—
400
—
400
—
ns
t
PR
Write Cycle Time
—
2
—
2
—
—
ms
* For Read Operating Only
A.C. test conditions
Input rise and fall time: 5ns (1V to 2V)
Input and output timing reference levels: 1.5V
Output load: See Figure right
Output load circuit
HT93LC46
4
6th May ’99
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