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CY7C261
CY7C263/CY7C264
Document #: 38-04010 Rev. *B
Page 4 of 14
AC Test Loads and Waveforms[4]
Switching Characteristics Over the Operating Range [1,3,4]
7C261-20
7C263-20
7C264-20
7C261-25
7C263-25
7C264-25
7C261-35
7C263-35
7C264-35
7C261-45
7C263-45
7C264-45
7C261-55
7C263-55
7C264-55
Parameter
Description
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Unit
tAA
Address to Output Valid
20
25
35
45
55
ns
tHZCS1
Chip Select Inactive to High Z
(7C263 and 7C264)
12
12
20
30
35
ns
tHZCS2
Chip Select Inactive to High Z
(7C261)
20
25
35
45
55
ns
tACS1
Chip Select Active to Output Valid
(7C263 and 7C264)
12
12
20
30
35
ns
tACS2
Chip Select Active to Output Valid
(7C261)
20
25
35
45
55
ns
tPU
Chip Select Active to Power-Up
(7C261)
00000
ns
tPD
Chip Select Inactive to
Power-Down (7C261)
20
25
35
45
55
ns
R2 333
Ω
(403
Ω MIL)
3.0V
5V
OUTPUT
R1 500
(658
Ω MIL)
30 pF
INCLUDING
JIG AND
SCOPE
GND
90%
10%
90%
10%
≤ 5ns
≤ 5 ns
5V
OUTPUT
5pF
INCLUDING
JIG AND
SCOPE
(a) Normal Load
(b) High Z Load
OUTPUT
RTH 200Ω (250Ω MIL)
5V
OUTPUT
5V
OUTPUT
R1250
Ω
30pF
INCLUDING
JIG AND
SCOPE
5pF
INCLUDING
JIG AND
SCOPE
(c) Normal Load
(d) High Z Load
OUTPUT
2.0V
RTH 100Ω
R1 250
Ω
R1 500
Ω
(658
Ω MIL)
R2 333
Ω
(403
Ω MIL)
R2167
Ω
R2167
Ω
2.0V(1.9VMIL)
Test Load for -20 through -30 speeds
Test Load for -35 through -55 speeds
Equivalent to:
THÉVENIN EQUIVALENT
Equivalent to:
THÉVENIN EQUIVALENT
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