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SCAN921821 Datasheet(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # SCAN921821
Description  Dual 18-Bit Serializer with Pre-emphasis, IEEE 1149.1(JTAG), and At-Speed BIST
PDF  11 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

SCAN921821 Datasheet(HTML) 4 Page - National Semiconductor (TI)

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AC Electrical Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Serializer AC Specifications
t
LLHT
Bus LVDS
Low-to-High
Transition Time
Figure 2, (Note 5)
R
L = 100
Ω,
C
L=10pF to GND
0.3
0.4
ns
t
LHLT
Bus LVDS
High-to-Low
Transition Time
0.3
0.4
ns
t
DIS
DIN (0-17) Setup to
TCLK
Figure 4, (Note 5)
R
L = 100
Ω,
C
L=10pF to GND
1.9
ns
t
DIH
DIN (0-17) Hold from
TCLK
0.6
ns
t
HZD
DO ± HIGH to
TRI-STATE Delay
Figure 5
R
L = 100
Ω,
C
L=10pF to GND
3.9
10
ns
t
LZD
DO ± LOW to
TRI-STATE Delay
3.5
10
ns
t
ZHD
DO ± TRI-STATE to
HIGH Delay
3.2
10
ns
t
ZLD
DO ± TRI-STATE to
LOW Delay
2.4
10
ns
t
SPW
SYNC Pulse Width
Figure 7,
R
L = 100
Ω
5*t
TCP
6*t
TCP
ns
t
PLD
Serializer PLL Lock
Time
Figure 6,
R
L = 100
Ω
510*t
TCP
1024*t
TCP
ns
t
SD
Serializer Delay
Figure 8 ,R
L = 100
Ω
t
TCP + 2.5
t
TCP + 4.5
t
TCP + 6.5
ns
t
SKCC
Channel to Channel
Skew
70
ps
t
RJIT
Random Jitter
Room Temperature, V
DD = 3.3V,
66 MHz
6.1
ps
(RMS)
t
DJIT
Deterministic Jitter
Figure 9, (Note 5)
15 MHz
-390
320
ps
66 MHz
-60
30
ps
1149.1 (JTAG) AC Specifications
f
MAX
Maximum TCK Clock
Frequency
C
L = 15pF,
R
L = 500
Ω
25
MHz
t
S
TDI or TMS Setup to
TCK,HorL
2.4
ns
t
H
TDI or TMS Hold
from TCK, H or L
2.8
ns
t
W1
TCK Pulse Width, H
or L
10
ns
t
W2
TRST Pulse Width, L
10
ns
t
REC
Recovery Time,
TRST to TCK
2ns
Note 1: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices
should be operated at these limits. The table of “Electrical Characteristics” specifies conditions of device operation.
Note 2: Typical values are given for VCC = 3.3V and TA = +25˚C.
Note 3: Current into device pins is defined as positive. Current out of device pins is defined as negative. Voltages are referenced to ground except VOD,
∆VOD,
VTH and VTL which are differential voltages.
Note 4: IOZ is measured at each pin. The DOUT pin not under test is floated to isolate the TRI-STATE current flow.
Note 5: Guaranteed by Design (GBD) using statistical analysis.
www.national.com
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