DS92001_06 Datasheet, PDF (3/12 Pages) National Semiconductor (TI) – 3.3V B/LVDS-BLVDS Buffer

Electrical Characteristics (Continued)
Over recommended operating supply and temperature ranges unless otherwise specified. (Notes 2, 3)
Symbol
Parameter
Conditions
Min
BLVDS OUTPUT DC SPECIFICATIONS (OUT)
I_OS1
I_OSD
Output Short Circuit Current
(Note 4)
Differential Output Short Circuit
Current (Note 4)
EN = V_CC, V_CM = 1.2V,V_ID = 200mV, V_OUT+ = 0V,
or
V_ID = −200mV, V_CM = 1.2V, V_OUT− = 0V
V_ID = −200mV, V_CM = 1.2V, V_OUT+ = V_CC , or
V_ID = 200mV, V_CM =1.2V, V_OUT− = V_CC
EN = V_CC, V_ID = |200mV|, V_CM. = 1.2V, V_OD = 0V
(connect true and complement outputs through a
current meter)
B/LVDS RECEIVER DC SPECIFICATIONS (IN)
V_TH
Differential Input High
Threshold (Note 5)
V_CM = +0.05V, +1.2V or +3.25V
V_TL
Differential Input Low
−70
Threshold (Note 5)
V_CMR
Common Mode Voltage Range
(Note 5)
|V_ID|/2
I_IN
Input Current
V_IN = V_CC
V_CC = 3.6V or 0V
V_IN = 0V
∆I_IN
Change in Magnitude of I_IN
V_IN = V_CC
V_IN = 0V
V_FSOD Fail-safe BLVDS Outputs
Inputs open,
R_L = 27Ω
250
(OUT+ is a more positive
shorted, or
voltage than OUT−)
terminated
R_L = 50Ω
350
(Note 5)
SUPPLY CURRENT
I_CCD
I_CCZ
Total Dynamic Supply Current
(includes load current)
TRI-STATE Supply Current
EN = V_CC, R_L = 27Ω or 50Ω, C_L = 15 pF,
Freq. = 200MHz 50% duty cycle,
V_ID = 200mV, V_CM = 1.2V
EN = 0V,Freq. = 200MHz 50% duty cycle,
V_ID = 200mV, V_CM= 1.2V
Typ Max Units
−30 −60 mA
53
80 mA
|30| |42| mA
−30 −5 mV
−30
mV
V_CC
V
−|V_ID|/2
|1.5| |20| µA
|1.5| |20| µA
1
6
µA
1
6
µA
350 500 mV
450 600 mV
50
65 mA
36
46 mA
AC Electrical Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified. (Note 3)
Symbol
Parameter
Conditions
Min Typ
LVDS OUTPUT AC SPECIFICATIONS (OUT)
t_PHLD
Differential Propagation Delay
High to Low
(Note 10)
V_ID = 200mV, V_CM = 1.2V,
R_L = 27Ω or 50Ω, C_L = 15pF
Figure 3 and Figure 4
1.0 1.4
t_PLHD
Differential Propagation Delay
Low to High
(Note 10)
1.0 1.4
t_SKD1
Pulse Skew |t_PLHD − t_PHLD|
(measure of duty cycle)
(Notes 5, 6)
0
20
t_SKD3
Part-to-Part Skew (Note 5)
(Note 7)
0
200
t_SKD4
Part-to-Part Skew (Note 5)
0
(Note 8)
t_LHT
Rise Time (Notes 5, 10)
20% to 80% points
R_L = 50Ω or 27Ω, C_L = 15pF
Figure 3 and Figure 5
0.350 0.6
Max Units
2.0
ns
2.0
ns
200 ps
300 ps
1
ns
1.0
ns
3
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