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IDT49C460A Datasheet(PDF) 20 Page - Integrated Device Technology

Part No. IDT49C460A
Description  32-BIT CMOS ERROR DETECTION AND CORRECTION UNIT
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

IDT49C460A Datasheet(HTML) 20 Page - Integrated Device Technology

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11.6
20
IDT49C460/A/B/C/D/E
32-BIT CMOS ERROR DETECTION AND CORRECTION UNIT
MILITARY AND COMMERCIAL TEMPERATURE RANGES
OUTPUT ENABLE/DISABLE TIMES
(5)
IDT49C460D AC ELECTRICAL CHARACTERISTICS
(Guaranteed Military Range Performance) Temperature range: –55
°C to +125°C, VCC = 5.0V ± 10%
The inputs switch between 0V to 3V with signal measured at the 1.5V level.
PROPAGATION DELAYS
(1)
2584 tbl 32
SET-UP AND HOLD TIMES RELATIVE TO LATCH ENABLES
NOTES:
2584 tbl 35
1. CI = 50pF.
2. These parameters are combinational propagation delay calculations, and are not tested in production.
3. Data In or Correct Data Out measurement requires timing as shown in the Switching Waveforms.
4. Set-up and Hold times relative to Latch Enables (Latching Data).
5. Output tests specified with CI = 5pF and measured to 0.5V change of output level. Testing is performed at CI = 50pF and correlated to CI = 5F.
6. Not production tested, guaranteed by characterization.
NOTE: (15) above applies to correction path.
2584 tbl 33
Enable
Disable
From Input
Enable
Disable
To Output
Min.
Max.
Min.
Max.
Unit
OE Byte0–3
d
d
u
u
DATA0–31
0
10
0
12
ns
OESC
d
d
u
u
SC0–7
0
10
0
12
ns
MINIMUM PULSE WIDTHS
Min.
LEIN, LEOUT/
GENERATE, LEDIAG
ud
ud (Positive–going pulse)
5
ns
2584 tbl 34
(6)
To Output
From Input
SC0–7
DATA0–31
ERROR
ERROR
MULT ERROR
MULT ERROR
Unit
DATA0–3(3)
17
22(2)
16
18
ns
CB0–7 (CODE ID1,0 = 00, 11)
13
17
12
14
ns
CB0–7 (CODE ID1,0 = 10)
13
14
ns
LEOUT/
GENERATE
u
u
—10
d
d
8
d
d
8ns
d
d
15
u
u
8
u
u
9ns
CORRECT
Not Internal Control Mode
—13
ns
DIAG MODE
Not Internal Control Mode
14
22
12
17
ns
CODE ID1,0
16(6)
20
15
18
ns
LEIN
From latched to Transparent
18
24
16
19
ns
LEDIAG
From latched to Transparent
u
u
14(6)
20
13
16
ns
Internal
Control
LEDIAG
From latched to Transparent
u
u
14(6)
19
14
16
ns
Mode
DATA0–31
Via Diagnostic Latch
u
u
14
22 (2)
11
14
ns
From Input
To Input
(Latching Data)
Set-up Time
Min.
Hold Time
Min.
Unit
DATA0–31(4)
d
d
LEIN
33
ns
CB0–7(4)
d
d
LEIN
23
ns
DATA0–31(4, 6)
d
d
LEOUT/
GENERATE
6(15)
0ns
CB0–7 (CODE ID 00, 11)(4, 6)
d
d
LEOUT/
GENERATE
12
0
ns
CB0–7 (CODE ID 10)(4, 6)
d
d
LEOUT/
GENERATE
80
ns
CORRECT(4, 6)
u
u
d
d
LEOUT/
GENERATE
70
ns
DIAG MODE(4, 6)
d
d
LEOUT/
GENERATE
14
0
ns
CODE ID1,0(4, 6)
d
d
LEOUT/
GENERATE
90
ns
LEIN(4, 6)
u
u
d
d
LEOUT/
GENERATE
16
0
ns
DATA0–31(4, 6)
LEDIAG
33
ns


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