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IDT7187S55DB Datasheet(PDF) 6 Page - Integrated Device Technology

Part # IDT7187S55DB
Description  CMOS STATIC RAM 64K (64K x 1-BIT)
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

IDT7187S55DB Datasheet(HTML) 6 Page - Integrated Device Technology

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6.2
6
IDT7187S/L
CMOS STATIC RAM 64K (64K x 1-BIT)
MILITARY TEMPERATURE RANGE
TIMING WAVEFORM OF READ CYCLE NO. 1
(1,2)
TIMING WAVEFORM OF READ CYCLE NO. 2
(1,3)
NOTES:
1.
WE is HIGH for Read cycle.
2.
CS is LOW for Read cycle.
3. Address valid prior to or coincident with
CS transition LOW.
4. Transition is measured
±200mV from steady state voltage with specified loading in Figure 2.
5. All Read cycle timings are referenced from the last valid address to the first transitioning address.
2986 drw 07
ADDRESS
DATA
tRC
tAA
OUT
tOH
PREVIOUS DATA VALID
DATA VALID
(5)
2986 drw 08
DATAOUT
CS
tACS
(4)
tLZ
(4)
HZ
t
tPD
t PU
ICC
ISB
SUPPLY
CURRENT
VCC
t RC (5)
HIGH
IMPEDANCE
DATA VALID
AC ELECTRICAL CHARACTERISTICS (VCC = 5.0V
± 10%, All Temperature Ranges)
7187S25
7187S35/45
(1)
7187S55
(1)
7187S70
(1)
7187S85
(1)
7187L25
7187L35/45
(1)
7187L55
(1)
7187L70
(1)
7187L85
(1)
Symbol
Parameter
Min. Max. Min.
Max. Min. Max. Min. Max. Min. Max. Unit
Write Cycle
tWC
Write Cycle Time
25
35/45
55
70
85
ns
tCW
Chip Select to End-of-Write
20
25/40
50
55
65
ns
tAW
Address Valid to End-of-Write
20
25/40
50
55
65
ns
tAS
Address Set-up Time
0
0
0
0
0
ns
tWP
Write Pulse Width
20
20/25
35
40
45
ns
tWR
Write Recovery Time
0
0
0
0
0
ns
tDW
Data Valid to End-of-Write
15
15/25
25
30
35
ns
tDH
Data Hold Time
5
5
5
5
5
ns
tWZ
(2)
Write Enable to Output in High-Z
12
15/30
30
30
40
ns
tOW
(2)
Output Active from End-of-Write
0
0
0
0
0
ns
NOTES:
2986 tbl 12
1. –55
°C to +125°C temperature range only.
2. This parameter guaranteed but not tested.


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