DATA SHEET
AC CHARACTERISTICS
Read Only Operations
Parameter Symbols
JEDEC Std
Description
Test Setup
tAVAV
tAVQV
tELQV
tGLQV
tRC
tACC
tCE
tOE
tOEH
Read Cycle Time (Note 3)
Min
Address to Output Delay
Chip Enable to Output Delay
Output Enable to Output Delay
CE# = VIL,
OE# = VIL
Max
OE# = VIL Max
Max
Read
Min
Output Enable Hold
Time (Note 3)
Toggle and
Data# Polling
Min
tEHQZ
tDF
Chip Enable to Output High Z
(Notes 2, 3)
Max
tGHQZ
tDF
Output Enable to Output High Z
(Notes 2, 3)
tAXQX
tOH
Output Hold Time from Addresses, CE#
or OE#, Whichever Occurs First
Min
Speed Options (Note 1)
-55 -70 -90 -120 Unit
55 70 90 120 ns
55 70 90 120 ns
55 70 90 120 ns
30 30 35 50 ns
0
0
0
0 ns
10 10 10 10 ns
18 20 20 30 ns
18 20 20 30 ns
0
0
0
0 ns
Notes:
1. See Figure 7 and Table 6 for test conditions.
2. Output driver disable time.
3. Not 100% tested.
Addresses
CE#
OE#
WE#
Outputs
0V
tRC
Addresses Stable
tACC
tOEH
HIGH Z
tOE
tCE
tDF
tOH
Output Valid
HIGH Z
Figure 8. Read Operation Timings
March 3, 2009 21445E6
Am29F040B
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