
5.04
4
IDT7203/7204/7205/7206 CMOS ASYNCHRONOUS FIFO
2048 x 9, 4096 x 9, 8192 x 9 and 16384 x 9
MILITARY AND COMMERCIAL TEMPERATURE RANGES
Commercial
7203S/L12
7204S/L12
Com'l & Mil.
7203S/L20
7204S/L20
7205L20
7206L20
Com'l
7203S/L25
7204S/L25
7205L25
7206L25
Min. Max.
—
35
—
10
25
Military
7203S/L30 7203S/L35
7204S/L30 7204S/L35
7205L30
7206L30
Min. Max. Min.
—
25
40
—
—
30
10
—
30
—
Com'l
7203S/L15
7204S/L15
7205L15
7206L15
7205L35
7206L35
Symbol
f
S
t
RC
t
A
t
RR
t
RPW
Parameters
Shift Frequency
Read Cycle Time
Access Time
Read Recovery Time
Read Pulse Width
(2)
Read LOW to Data Bus LOW
(3)
Write HIGH to Data Bus Low-Z
(3, 4)
Data Valid from Read HIGH
Read HIGH to Data Bus High-Z
(3)
Write Cycle Time
Write Pulse Width
(2)
Write Recovery Time
Data Set-up Time
Data Hold Time
Reset Cycle Time
Reset Pulse Width
(2)
Reset Set-up Time
(3)
Reset Recovery Time
Retransmit Cycle Time
Retransmit Pulse Width
(2)
Retransmit Set-up Time
(3)
Retransmit Recovery Time
Reset to 
EF
 LOW
t
HFH
, t
FFH
 Reset to 
HF
 and 
FF
 HIGH
t
RTF
Retransmit LOW to Flags Valid
t
REF
Read LOW to 
EF
 LOW
t
RFF
Read HIGH to 
FF
 HIGH
t
RPE
Read Pulse Width after 
EF
 HIGH
t
WEF
Write HIGH to 
EF
 HIGH
t
WFF
Write LOW to 
FF
 LOW
t
WHF
Write LOW to 
HF
 Flag LOW
t
RHF
Read HIGH to 
HF
 Flag HIGH
t
WPF
Write Pulse Width after 
FF
 HIGH
t
XOL
Read/Write LOW to 
XO
 LOW
t
XOH
Read/Write HIGH to 
XO
 HIGH
t
XI
XI
 Pulse Width
(2)
t
XIR
XI
 Recovery Time
t
XIS
XI
 Set-up Time
NOTES:
1. Timings referenced as in AC Test Conditions.
2. Pulse widths less than minimum are not allowed.
3. Values guaranteed by design, not currently tested.
4. Only applies to read data flow-through mode.
Min. Max. Min.
—
50
20
—
—
12
8
—
12
—
Max. Min.
40
—
15
—
—
Max.
33.3
—
20
—
—
Max. Unit
22.2 MHz
—
35
—
—
—
25
—
10
15
—
30
—
10
20
28.5
—
25
—
—
—
45
—
10
35
ns
ns
ns
ns
t
RLZ
t
WLZ
t
DV
t
RHZ
t
WC
t
WPW
t
WR
t
DS
t
DH
t
RSC
t
RS
3
3
5
—
20
12
8
9
0
20
12
—
—
—
12
—
—
—
—
—
—
—
5
5
5
—
25
15
10
11
0
25
15
—
—
—
15
—
—
—
—
—
—
—
5
5
5
—
30
20
10
12
0
30
20
—
—
—
15
—
—
—
—
—
—
—
5
5
5
—
35
25
10
15
0
35
25
—
—
—
18
—
—
—
—
—
—
—
5
5
5
—
40
30
10
18
0
40
30
—
—
—
20
—
—
—
—
—
—
—
5
10
5
—
45
35
10
18
0
45
35
—
—
—
20
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t
RSS
t
RTR
t
RTC
t
RT
t
RTS
t
RSR
t
EFL
12
8
20
12
12
8
—
—
—
—
—
12
—
—
—
—
12
—
—
12
8
8
—
—
—
—
—
—
12
17
20
12
14
—
12
14
17
17
—
12
12
—
—
—
15
10
25
15
15
10
—
—
—
—
—
15
—
—
—
—
15
—
—
15
10
10
—
—
—
—
—
—
25
25
25
15
15
—
15
15
25
25
—
15
15
—
—
—
20
10
30
20
20
10
—
—
—
—
—
20
—
—
—
—
20
—
—
20
10
10
—
—
—
—
—
—
30
30
30
20
20
—
20
20
30
30
—
20
20
—
—
—
25
10
35
25
25
10
—
—
—
—
—
25
—
—
—
—
25
—
—
25
10
10
—
—
—
—
—
—
35
35
35
25
25
—
25
25
35
35
—
25
25
—
—
—
30
10
40
30
30
10
—
—
—
—
—
30
—
—
—
—
30
—
—
30
10
10
—
—
—
—
—
—
40
40
40
30
30
—
30
30
40
40
—
30
30
—
—
—
35
10
45
35
35
10
—
—
—
—
—
35
—
—
—
—
35
—
—
35
10
15
—
—
—
—
—
—
45
45
45
30
30
—
30
30
45
45
—
35
35
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
AC ELECTRICAL CHARACTERISTICS
(1)
(Commercial:  V
CC
 = 5V 
±
 10%, T
A
 = 0
°
C to +70
°
C; Military:  V
CC
 = 5V 
±
 10%, T
A
 = –55
°
C to +125
°
C)
2661 tbl 05