Datasheet

V
IN
CSOUT
HSOUT
BPOUT
T
BPOUT
BLANKING LEVEL
WHITE LEVEL
- SYNC
O
H
TRAILING
EDGE
50%
SLICE
50%
50%
+ SYNC
VIDEO
td
BPOUT
T
HSOUT
td
HSOUT
td
CSOUT
VIDEO INPUT RANGE
0.5 V
PP
to 2 V
PP
1 V
PP
(typ.)
LEADING
EDGE
LMH1981
www.ti.com SNLS214H –APRIL 2006–REVISED MARCH 2013
Table 1. SDTV Horizontal Interval Timing Characteristics (NTSC, PAL, 480I, 576I)
(1)(2)
Symbol Parameter Conditions Typ Units
td
CSOUT
Composite Sync Output Propagation Delay from Input Sync See Figure 9 NTSC, 480I 475
ns
Reference (O
H
)
PAL, 576I 525
td
HSOUT
Horizontal Sync Output Propagation Delay from Input Sync See Figure 9
(1)
NTSC, 480I 40
ns
Reference (O
H
)
PAL, 576I 60
td
BPOUT
Burst/Back Porch Timing Output Propagation Delay from See Figure 9 300 ns
Input Sync Trailing Edge
T
HSOUT
Horizontal Sync Output Pulse Width See Figure 9 2.5 µs
T
BPOUT
Burst/Back Porch Timing Output Pulse Width See Figure 9 3.2 µs
(1) Note: HSync propagation delay variation less than ±3 ns (typ) over 0°C to 70°C temperature range.
(2) V
CC
= 3.3V , T
A
= 25°C
Table 2. EDTV Horizontal Interval Timing Characteristics (480P, 576P)
Symbol Parameter Conditions Typ Units
td
CSOUT
Composite Sync Output Propagation Delay from Input Sync See Figure 9 450 ns
Reference (O
H
)
td
HSOUT
Horizontal Sync Output Propagation Delay from Input Sync See Figure 9 35 ns
Reference (O
H
)
td
BPOUT
Burst/Back Porch Timing Output Propagation Delay from Input Sync See Figure 9 500 ns
Trailing Edge
T
HSOUT
Horizontal Sync Output Pulse Width See Figure 9 2.3 µs
T
BPOUT
Burst/Back Porch Timing Output Pulse Width See Figure 9 350 ns
HDTV Horizontal Interval Timing
Figure 10. HDTV Horizontal Interval with Tri-level Sync
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