CY7C265 Datasheet, PDF (4/11 Pages) Cypress Semiconductor – 8K x 8 Registered PROM

CY7C265
AC Test Loads and Waveforms
Test Load for -15 through -25 speeds
5V
OUTPUT
R1 500
(658Ω MIL)
5V
OUTPUT
R1 500Ω
(658Ω MIL)
30 pF
R2 333Ω
(403Ω MIL)
5 pF
R2 333Ω
(403Ω MIL)
INCLUDING
JIG AND
SCOPE
INCLUDING
JIG AND
SCOPE
(a) NormalLoad
(b) High Z Load
Equivalent to: THÉVENIN EQUIVALENT
OUTPUT
R_TH 200Ω
250Ω MIL
Test Load for -40 through -50 speeds
5V
OUTPUT
R1 250Ω
5V
OUTPUT
R1 250Ω
30 pF
R2 167Ω
INCLUDING
JIG AND
SCOPE
(c) Normal Load
5 pF
R2 167Ω
INCLUDING
JIG AND
SCOPE
(d) High Z Load
Equivalent to: THÉVENIN EQUIVALENT
OUTPUT
R_TH 100Ω
2.0V
3.0V
GND
≤ 5 ns
90%
10%
90%
10%
≤ 5 ns
Switching Characteristics Over the Operating Range^{[2, 4]}
Parameter
t_AS
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
Address Hold from Clock
Clock to Output Valid
Clock Pulse Width
E_S Set-Up to Clock
(Sync. Enable Only)
E_S Hold from Clock
INIT to Output Valid
INIT Recovery to Clock
INIT Pulse Width
Output Valid from Clock
(Sync. Mode)
Output Inactive from Clock
(Sync. Mode)
Output Valid from E LOW
(Async. Mode)
Output Inactive from E HIGH
(Async. Mode)
7C265-15
7C265-25
7C265-40
7C265-50
Min. Max. Min. Max. Min. Max. Min. Max. Unit
15
25
40
50
ns
0
0
0
0
ns
12
15
20
25
ns
12
15
15
20
ns
12
15
15
15
ns
5
5
5
5
ns
15
18
25
35
ns
12
15
20
25
ns
12
15
25
35
ns
12
15
20
25
ns
12
15
20
25
ns
12
15
20
25
ns
12
15
20
25
ns
Document #: 38-04012 Rev. *A
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