LMH1981 Datasheet, PDF (2/13 Pages) National Semiconductor (TI) – Multi-Format Video Sync Separator

Absolute Maximum Ratings (Notes 1, 7)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD Tolerance (Note 2)
Human Body Model
Machine Model
Supply Voltage V_S,
Video Input, V_IN
Storage Temperature Range
3.5 kV
350V
0V to 5.5V
−0.3V to V_S + 0.3V
−65˚C to +150˚C
Lead Temperature (soldering 10 sec.)
Junction Temperature (T_JMAX) (Note 3)
Thermal Resistance (θ_JA)
Operating Ratings (Note 1)
Operating Temperature Range
V_S
V_IN
300˚C
+150˚C
52˚C/W
0˚C to +70˚C
3.3V to 5V
0V to 2.3V
Electrical Characteristics (Note 4)
Unless otherwise specified, V_S = V_CC1 = V_CC2 = V_CC3 = 3.3V, T_A = 25˚C, R_EXT = 10 kΩ 0.1%. Output signals are measured on
pins 7, 8, 9, 12, 13, and 14. (See Figure 2 for Test Circuit)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 6) (Note 5) (Note 6)
I_CC
Supply Current
Video Input Specifications
V_IN-AMPL
Input Signal Amplitude
No Input Signal, Outputs at V_CC = 3.3V
Logic 1
V_CC = 5V
Input Signal Amplitude Required to
0.5
Maintain Slice Level Spec
mA
2.0
V_PP
V_IN-CLAMP Input Sync Clamp Level
Unloaded
V
V_IN-SLICE
Input Sync Slice Level
Input Signal Amplitude 0.5 V_PP to 2 V_PP
50
%
Between Sync Tip Clamp Level and Video
Blank Level
Logic Output Specifications
V_OL
Output Logic 0,
V_OH
Output Logic 1
T_SYNC-LOCK Sync Lock Time
I_OL = TBD
−0.5
1.5
V
I_OH = TBD
V_CC = 3.3V
3.0
V_CC = 5V
4.5
3.8
V
5.5
Hold-Off Period Before Output Are
TBD
Accurate
Composite Sync Output
See Figures 9, 10 for SDTV, EDTV &
HDTV Horizontal Interval Timing
Horizontal Sync Output
See Figures 9, 10
Burst/Back Porch Clamp
See Figures 9, 10
Output
T_VSOUT
Vertical Sync Output Pulse
Width
Odd/Even Field Output
Video Format Output
See Figures 3, 8 for SDTV, EDTV &
HDTV Vertical Interval Timing
See Figures 3, 8
See Figures 11, 12, 13
3
H
Periods
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics Tables.
Note 2: Human Body Model is 1.5 kΩ in series with 100 pF. Machine Model is 0Ω in series with 200 pF.
Note 3: The maximum power dissipation is a function of T_J(MAX), θ_JA, and T_A. The maximum allowable power dissipation at any ambient temperature is
P_D = (T_J(MAX) - T_A)/θ_JA . All numbers apply for packages soldered directly onto a PC board.
Note 4: Electrical table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of
the device.
Note 5: Typical values represent the most likely parametric norm at the time of characterization.
Note 6: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlations using the Statistical Quality
Control (SQC) method.
Note 7: All voltages are measured with respect to GND, unless otherwise specified.
Note 8: Input amplitude range reduces if V_S = 3.3V.
Note 9: Outputs are active low signals, except for composite sync, odd/even field, and video format outputs.
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