IDT72421/72201/72211/72221/72231/72241 CMOS SyncFIFO™
64 x 9, 256 x 9, 512 x 9, 1024 x 9, 2048 x 9 and 4096 x 9
MILITARY AND COMMERCIAL TEMPERATURE RANGES
AC ELECTRICAL CHARACTERISTICS
(Commercial: V
CC
= 5V
±
10%, T
A
= 0°C to + 70°C; Military: V
CC
= 5V
±
10%, T
A
= –55°C to +125°C)
Com'l.
72421L12 72421L15
72201L12 72201L15
72211L12 72211L15
Symbol
f
S
t
A
t
CLK
t
CLKH
t
CLKL
t
DS
t
DH
t
ENS
t
ENH
t
RS
t
RSS
t
RSR
t
RSF
t
OLZ
t
OE
t
OHZ
t
WFF
t
REF
t
AF
t
AE
t
SKEW1
t
SKEW2
Parameter
Clock Cycle Frequency
Data Access Time
Clock Cycle Time
Clock High Time
Clock Low Time
Data Set-up Time
Data Hold Time
Enable Set-up Time
Enable Hold Time
Reset Pulse Width
(1)
Reset Set-up Time
Reset Recovery Time
Reset to Flag and Output Time
Output Enable to Output in Low-Z
(2)
Output Enable to Output Valid
Output Enable to Output in High-Z
(2)
Write Clock to Full Flag
Read Clock to Empty Flag
Write Clock to Almost-Full Flag
Read Clock to Almost-Empty Flag
Skew time between Read Clock &
Write Clock for Empty Flag &Full Flag
Skew time between Read Clock &
Write Clock for Almost-Empty Flag &
Almost-Full Flag
—
2
12
5
5
3
0
3
0
12
12
12
—
0
3
3
—
—
—
—
5
22
83.3
8
—
—
—
—
—
—
—
—
—
—
12
—
7
7
8
8
8
8
—
—
—
2
15
6
6
4
1
4
1
15
15
15
—
0
3
3
—
—
—
—
6
28
66.7
10
—
—
—
—
—
—
—
—
—
—
15
—
8
8
10
10
10
10
—
—
72421L20
72201L20
72211L20
—
2
20
8
8
5
1
5
1
20
20
20
—
0
3
3
—
—
—
—
8
35
50
12
—
—
—
—
—
—
—
—
—
—
20
—
10
10
12
12
12
12
—
—
Commercial & Military
72421L25 72421L35
72201L25 72201L35
72211L25 72211L35
—
3
25
10
10
6
1
6
1
25
25
25
—
0
3
3
—
—
—
—
10
40
40
15
—
—
—
—
—
—
—
—
—
—
25
—
13
13
15
15
15
15
—
—
—
3
35
14
14
8
2
8
2
35
35
35
—
0
3
3
—
—
—
—
12
42
28.6
20
—
—
—
—
—
—
—
—
—
—
35
—
15
15
20
20
20
20
—
—
72421L50
72201L50
72211L50
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
—
3
50
20
20
10
2
10
2
50
50
50
—
0
3
3
—
—
—
—
15
45
20
25
—
—
—
—
—
—
—
—
—
—
50
—
28
28
30
30
30
30
—
—
Min. Max. Min. Max. Min. Max. Min. Max.
Min. Max. Min. Max.
NOTES:
1. Pulse widths less than minimum values are not allowed.
2. Values guaranteed by design, not currently tested.
2655 tbl 07
5.07
4
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
