CY7C245A-25WC Datasheet Download

Part No.:
CY7C245A-25WC
Download:
Download Datasheet
Description:
[2K x 8 Reprogrammable Registered PROM]
File Size:
228 K
Page:
12 Pages
Logo:
Manufacturer:
CYPRESS [ CYPRESS SEMICONDUCTOR ]
PCB Prototype
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CY7C245A
AC Test Loads and Waveforms
[4, 5]
5V
OUTPUT
50 pF
INCLUDING
JIG AND
SCOPE
R2
167Ω
R1 250Ω
5V
OUTPUT
5 pF
INCLUDING
JIG AND
SCOPE
R2
167Ω
R1 250Ω
3.0V
GND
5 ns
ALL INPUT PULSES
90%
10%
90%
10%
5 ns
(a) Normal Load
(b) High Z Load
Equivalent to: TH ÉVENIN EQUIVALENT
100Ω
OUTPUT
2.0V
Switching Characteristics
Over Operating Range
[4, 5]
7C245A-15
Parameter
t
SA
t
HA
t
CO
t
PWC
t
SES
t
HES
t
DI
t
RI
t
PWI
t
COS
t
HZC
t
DOE
t
HZE
Description
Address Set-Up to Clock HIGH
Address Hold from Clock HIGH
Clock HIGH to Valid Output
Clock Pulse Width
E
S
Set-Up to Clock HIGH
E
S
Hold from Clock HIGH
Delay from INIT to Valid Output
INIT Recovery to Clock HIGH
INIT Pulse Width
Valid Output from Clock HIGH
[8]
Inactive Output from Clock
HIGH
[8]
Valid Output from E LOW
[9]
Inactive Output from E HIGH
[9]
10
10
15
15
12
15
10
10
5
15
12
12
15
15
15
15
Min. Max.
15
0
10
12
10
5
20
15
15
15
15
15
15
7C245A-18
Min. Max.
18
0
12
15
12
5
20
20
20
20
20
20
20
7C245A-35
Min.
25
0
12
20
15
5
20
20
25
30
30
30
30
Max.
7C245A-25
Min.
35
0
15
20
15
5
35
Max.
7C245A-35
Min.
45
0
25
Max.
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes:
8. Applies only when the synchronous (E
S
) function is used.
9. Applies only when the asynchronous (E) function is used.
Document #: 38-04007 Rev. *D
Page 5 of 12