Rainbow Electronics AT27LV040A - Manual (Page 5)

AT27LV040A
5
AC Waveforms for Read Operation
(1)
Notes: 1. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V. See Input Test Waveforms and
Measurement Levels.
2. OE may be delayed up to t
CE
- t
OE
after the falling edge of CE without impact on t
CE
.
3. OE may be delayed up to t
ACC
- t
OE
after the address is valid without impact on t
ACC
.
4. This parameter is only sampled and is not 100% tested.
5. Output float is defined as the point when data is no longer driven.
AC Characteristics for Read Operation
V
CC
= 3.0V to 3.6V and 4.5V to 5.5V
Symbol Parameter Condition
AT27LV040A-90 AT27LV040A-12 AT27LV040A-15
Units Min Max Min Max Min Max
t
ACC
(3) Address to Output Delay CE = OE = V
IL
90 120 150 ns
t
CE
(2) CE to Output Delay OE = V
IL
90 120 150 ns
t
OE
(2)(3) OE to Output Delay CE = V
IL
50 50 60 ns
t
DF
(4)(5)
OE or CE High to Output
Float, whichever occurred first
60 40 50 ns
t
OH
Output Hold from Address, CE
or OE, whichever occurred first
0 0 0 ns