Cypress Semiconductor CY7C291A Spezifikationsblatt - Seite 5
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AC Test Loads and Waveforms
R1250
5V
OUTPUT
R2
30pF
167
INCLUDING
JIG AND
SCOPE
(a) Normal Load
Equivalent to:
THÉ VENIN EQUIVALENT
OUTPUT
V
CC
SUPPLY
CURRENT
A
A
0
10
ADDRESS
CS
CS
2
3
CS
1
O
- O
0
7
Switching Characteristics
Parameter
t
Address to Output Valid
AA
t
Chip Select Inactive to High Z
HZCS1
t
Chip Select Active to Output Valid
ACS1
t
Chip Select Inactive to High Z
HZCS2
(7C293A CS
t
Chip Select Active to Output Valid
ACS2
(7C293A CS
t
Chip Select Active to Power-Up
PU
(7C293A CS
t
Chip Select Inactive to Power-Down
PD
(7C293A CS
[4]
R1250
5V
OUTPUT
5 pF
INCLUDING
JIG AND
SCOPE
(b) High Z Load
100
2.0V
C291A-6
t
PD
t
t
AA
HZCS
Over the Operating Range
Description
Min.
[6]
Only)
1
[6]
Only)
1
Only)
1
Only)
1
3.0V
R2
GND
167
< 5 ns
C291A-4
t
PU
50%
[3, 4]
7C291A-25
7C292A-25
7C293A-25
7C291A-20
7C291AL-25
7C292A-20
7C292AL-25
7C293A-20
7C293AL-25
Max.
Min.
Max.
20
25
15
15
15
15
22
27
22
27
0
0
22
27
5
CY7C291A
CY7C292A/CY7C293A
ALL INPUT PULSES
90%
10%
50%
t
ACS
7C291A-35
7C291A-50
7C292A-35
7C292A-50
7C293A-35
7C293A-50
7C291AL-35
7C291AL-50
7C292AL-35
7C292AL-50
7C293AL-35
7C293AL-50
Min.
Max.
Min.
35
20
20
35
35
0
0
35
90%
10%
< 5 ns
C291A-5
C291A-7
Max.
Unit
50
ns
20
ns
20
ns
45
ns
45
ns
ns
45
ns