mc44251 Freescale Semiconductor, Inc, mc44251 Datasheet - Page 4

• Manufacturer Part Number: mc44251
• Description: Triple 8-bit Video Three-state Outputs
• Manufacturer: Freescale Semiconductor, Inc

DATA OUTPUTS
NOTES:
MC44251
4
Pin No.
1. Unit “LSB” means ideal LSB (see definitions section).
2. “Difference” means difference between any two converters in the same package.
10
12
13
14
15
16
17
18
19
20
21
22
11
1
2
3
4
5
6
7
8
9
t QLH , t QHL
Symbol
I OTR
I OH
I OL
t d
V DD(D)
V SS(D)
V SS(A)
Name
CLK
G0
G1
G2
G3
CS
G4
G5
G6
G7
B7
R0
R1
R2
R3
R4
R5
R6
R7
Delay from Sample Clock to Valid Output, Figure 2
Output Sinking Current at V out = 0.4 V
Output Sourcing Current at V out = V DD – 0.1 V
Propagation Delay from the Clock Rising Edge to Valid Data Output
(C L = 15 pF), Figure 1
Maximum Three–State Leakage Current
Output Blue, Bit 7 (MSB)
Output Green, Bit 0 (LSB)
Output Green, Bit 1
Output Green, Bit 2
Output Green, Bit 3
Chip Select
Output Green, Bit 4
Output Green, Bit 5
Output Green, Bit 6
Output Green, Bit 7 (MSB)
Output Red, Bit 0 (LSB)
V DD , Digital
Output Red, Bit 1
Output Red, Bit 2
Output Red, Bit 3
V SS , Digital
Clock Input
Output Red, Bit 4
Output Red, Bit 5
Output Red, Bit 6
Output Red, Bit 7 (MSB)
V SS , Analog
OUTPUT
DATA
CLK
Function
t r
10%
50%
90%
Figure 1. Clock and Output Timing
t QLH , t QHL
Characteristic
t wH
PIN DESCRIPTIONS
50%
t f
Pin No.
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
t wL
V DD(R)
V DD(D)
V SS(R)
V DD(A)
V SS(D)
MODE
Name
R TOP
R BOT
R MID
I BIAS
VTN
G in
R in
B in
HZ
B0
B1
B2
B3
B4
B5
B6
Horizontal Sync
Vertical Sync
V DD, reference
Reference Tapping, Top
Analog Input, Red
Reference Tapping, Middle
Analog Input, Green
Reference Tapping, Bottom
Analog Input, Blue
V SS for Reference Voltage
To External Bias Resistor
V DD , Analog
Clamp Level Select Input
Output Blue, Bit 0 (LSB)
Output Blue, Bit 1
Output Blue, Bit 2
Output Blue, Bit 3
V SS , Digital
Output Blue, Bit 4
Output Blue, Bit 5
Output Blue, Bit 6
V DD , Digital
– 0.4
Min
2.5
2.0
—
—
V DD(D)
V SS(D)
Function
Max
2.5
—
—
40
50
MOTOROLA
Cycle
Unit
mA
mA
ns
A