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IDT49C465PQFB Datasheet PDF : 38 Pages
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IDT49C465/A
32-BIT FLOW-THRU ERROR DETECTION AND CORRECTION UNIT
MILITARY AND COMMERCIAL TEMPERATURE RANGES
SET-UP AND HOLD TIMES - 49C465
Parameter Description
Parameter From
Number Name
Input
To
(edge) Output
(edge)
42
t SSLS
SDIN Set-up *
before SLE =LOW
43
t SSLH
SDIN Hold
*
after SLE = LOW
44
t MMLS
MDIN Set-up *
before MLE =LOW
45
t MMLH
MDIN Hold
*
after MLE = LOW
46
t CMLS
CBI Set-up
*
before MLE =LOW
47
t CMLH
CBI Hold
*
after MLE = LOW
48
t MPLS
MDIN Set-up *
before PLE =HIGH
49
t MPLH
MDIN Hold
*
after PLE = HIGH
50
t CPLS
CBI Set-up
*
before PLE =HIGH
51
t CPLH
CBI Hold
*
after PLE = HIGH
52
t PCPLS
PCBI Set-up *
before PLE =HIGH
53
t PCPLH
PCBI Hold
*
after PLE = HIGH
Com.’l.
Min.
4
4
4
4
4
4
12
0
12
0
12
0
DIAGNOSTIC SET-UP AND HOLD TIMES
54
t CSCS
CBI Set-up
*
12
55
t MSCS
MDIN Set-up *
before SYNCLK=HIGH 12
56
t MLSCS MLE Set-up = HIGH
12
57
t SESCS SCLKEN Set-up = LOW
4
58
t SESCH SCLKEN Hold = LOW after SYNCLK =HIGH
4
NOTE:
“*” = Where “edge” is not specified, both HIGH and LOW edges are implied.
Mil.
Min.
5
5
5
5
5
5
15
0
15
0
15
0
15
15
15
5
5
Refer to
Timing Diagram
Unit
Figure
ns
7, 9
ns
7, 9
ns
8, 10, 11
ns
8, 10, 11
ns
8, 10, 11
ns
8, 10, 11
ns
—
ns
—
ns
—
ns
—
ns
—
ns
—
ns
15
ns
15
ns
15
ns
15
ns
15
2552 tbl 29
MINIMUM PULSE WIDTH
Parameter
Number Name
59
t CLEAR
60
t MLE
61
t PLE
62
t SLE
63
t SYNCLK
Minimum Pulse Width
Input
Min. CLEAR LOW time to clear diag. registers
Min. MLE HIGH time
Min. PLE LOW time
to strobe new data
to strobe new data
Min. SLE HIGH time to strobe new data
Min. SYNCLK HIGH time to clock in new data
Com’l.
Conditions
Min.
Data = Valid
8
MD, CBI = Valid 5
SD = Valid
5
SD = Valid
5
SCLKEN = LOW 5
Refer to
Mil.
Timing Diagram
Min. Unit
Figure
10 ns
6 ns
6 ns
6 ns
6 ns
14
—
—
—
14
2552 tbl 30
Input Pulse Levels
Input Rise/Fall Times
Input Timing Reference Levels
Output Reference Levels
Output Load
GND to 3.0V
1V/ns
1.5V
1.5V
See Figure 18
2552 tbl 31
11.7
27
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