Cypress CY7C291A, CY7C292A, CY7C293A AC Test Loads and Waveforms, Switching Characteristics

CY7C291A
CY7C292A/CY7C293A
5
AC Test Loads and Waveforms[4]
tPU
tAA tHZCS tACS
50% 50%
tPD
3.0V
5V
OUTPUT
R1250Ω
R2
167Ω
30pF
INCLUDING
JIG AND
SCOPE
GND
90%
10%
90%
10%
<5ns <5ns
5V
OUTPUT
5pF
INCLUDING
JIG AND
SCOPE
(a)Normal Load (b)High Z Load
OUTPUT 2.0V
Equivalent to: THÉ VENINEQUIVALENT
C291A-4 C291A-5
100Ω
C291A-6
R1250Ω
R2
167Ω
ALL INPUT PULSES
CS2−CS3
CS1
VCC
SUPPLY
CURRENT
A0−A10
ADDRESS
O0-O
7
C291A-7
Switching Characteristics Over the Operating Range[3, 4]
7C291A-20
7C292A-20
7C293A-20
7C291A-25
7C292A-25
7C293A-25
7C291AL-25
7C292AL-25
7C293AL-25
7C291A-35
7C292A-35
7C293A-35
7C291AL-35
7C292AL-35
7C293AL-35
7C291A-50
7C292A-50
7C293A-50
7C291AL-50
7C292AL-50
7C293AL-50
Paramete r Description Min. Max. Min. Max. Min. Max. Min. Max. Unit
tAA Address to Output Valid 20 25 35 50 ns
tHZCS1 Chip Select Inactive to High Z 15 15 20 20 ns
tACS1 Chip Select Active to Output Valid 15 15 20 20 ns
tHZCS2 Chip Select Inactive to High Z
(7C293A CS1 Only)[6] 22 27 35 45 ns
tACS2 Chip Select Active to Output Valid
(7C293A CS1 Only)[6] 22 27 35 45 ns
tPU Chip Select Active to Power-Up
(7C293A CS1 Only) 0 0 0 0 ns
tPD Chip Select Inactive to Power-Down
(7C293A CS1 Only) 22 27 35 45 ns