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SCAN921821 Datasheet(PDF) 3 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) 3 Page - National Semiconductor (TI)

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DC Electrical Characteristics (Continued)
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Bus LVDS Output DC Specifications
V
OD
Output Differential
Voltage (DO+) -
(DO-)
Figure 10,R
L = 100
Ω
450
500
550
mV
∆V
OD
Output Differential
Voltage Unbalance
215
mV
V
OS
Offset Voltage
1.05
1.2
1.25
V
∆V
OS
Offset Voltage
Unbalance
2.7
15
mV
Q
POV
Pre-Emphasis Output
Voltage Ratio
|V
ODPRE /VOD |
Pre-Emphasis Level = 1
1.10
1.24
1.35
Pre-Emphasis Level = 2
1.35
1.47
1.55
Pre-Emphasis Level = 3
1.55
1.70
1.80
Pre-Emphasis Level = 4
1.80
1.91
1.95
Pre-Emphasis Level = 5
1.95
2.08
2.20
Pre-Emphasis Level = 6
2.10
2.21
2.35
Pre-Emphasis Level = 7
2.15
2.30
2.50
I
OS
Output Short Circuit
Current
DO = 0V, Din = H, PWDN and EN = 2.4V
-10
-25
-75
mA
I
OZ
TRI-STATE Output
Current
PWDN or EN = 0.8V, DO = 0V (Note 4)
-10
± 1
+10
µA
PWDN or EN = 0.8V, DO = VDD (Note 4)
-55
± 6
+55
µA
Power Supply Current (DVDD, PVDD and AVDD Pins)
I
DD
Total Supply Current
(includes load
current)
C
L = 15pF,
R
L = 100
Ω
f = 66 MHz, PRBS-15
Pattern
160
225
mA
f = 66 MHz, Worst
Case Pattern
(Checker-Board
Pattern)
180
mA
I
DDP
Total Supply Current
with Pre-Emphasis
(includes load
current)
C
L = 15pF,
R
L = 100
Ω
f = 66 MHz, PRBS-15
Pattern
240
mA
f = 66 MHz, Worst
Case Pattern
(Checker-Board
Pattern)
280
325
mA
I
DDX
Supply Current
Powerdown
PWDN = 0.8V, EN = 0.8V
1.0
3.0
mA
Timing Requirements for TCLK
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
TCP
Transmit Clock
Period
15.2
T
66.7
ns
t
TCIH
Transmit Clock High
Time
0.4T
0.5T
0.6T
ns
t
TCIL
Transmit Clock Low
Time
0.4T
0.5T
0.6T
ns
t
CLKT
TCLK Input
Transition Time
36
ns
t
JIT
TCLK Input Jitter
(Note 5)
80
ps (RMS)
www.national.com
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