DMA 2271, DMA 2280, DMA 2281
14
Characteristics,
continued
Symbol
Parameter
Pin No.
Min.
Typ.
Max.
Unit
Test Conditions
V
HBCKOH
Combined Horizontal Blanking &
Color Key Output High Voltage
50
4.0
–
–
V
–I
HBCKO
= 0.1 mA
t
HB2
Horizontal Blanking Output Time
–
10.5
0
μ
s
t
CK2
Color Key High Z
Output Low Time
–
2.27
–
μ
s
t
CK1
Color Key Output Delay Time
after Horizontal Blanking Output
–
5.5
–
μ
s
t
HB1
Horizontal Blanking Output
Lead Time before
Chroma Output High
50,
21 to 24,
27 to 30
5.8
–
18.4
μ
s
V
HVBOL
Combined Horizontal and Verti-
cal Blanking Output Low Voltage
51
–
–
0.4
V
I
HVBO
= 6 mA
I
HVBOZ
Combined Horizontal and
Vertical Blanking Output
High–Impedance Current
–10
–
+10
μ
A
V
HVBO
= 0 to 5 V
V
HVBOH
Combined Horizontal & Vertical
Blanking Output High Voltage
4.0
–
–
V
–I
HVBO
= 0.1 mA
t
VB1
Vertical Blanking Output Time
–
0.64
–
ms
t
HB2
Horizontal Blanking Output Time
–
10.5
–
μ
s
V
HBOL
Horizontal Blanking Output
Low Voltage
52
–
–
0.4
V
I
HBO
= 1.6 mA
V
HBOH
Horizontal Blanking Output
High Voltage
2.4
–
–
V
–I
HBO
= 0.1 mA
t
HB2
Horizontal Blanking Output
Low Time
–
12
–
μ
s
V
CSOL
Composite Sync Output
Low Voltage
53
–
–
0.4
V
I
CSO
= 1.6 mA
V
CSOH
Composite Sync Output
High Voltage
2.8
–
–
V
–I
CSO
= 0.1 mA
t
CS2
Composite Sync Output
Low Time 1
–
4.8
–
μ
s
t
CS3
Composite Sync Output
Low Time 2
–
2.4
–
μ
s
t
VB2
Composite Sync Output Delay
Time after Vertical Blanking
Output
51, 53
–
1.5
–
μ
s
t
CSOLC
Composite Sync Output Lead
Time before Chroma Output
53,
21 to 24,
27 to 30
4.2
–
16.8
μ
s
V
PDOL
Packet Data Output Low Voltage
55
–
–
0.4
V
I
PDO
= 1.6 mA
V
PDOH
Packet Data Output
High Voltage
2.4
–
–
V
–I
PDO
= 0.1 mA
V
TSOL
Teletext Sync Output
Low Voltage
57
–
–
0.4
V
I
TSO
= 1.6 mA
V
TSOH
Teletext Sync Output
High Voltage
2.4
–
–
V
–I
TSO
= 0.1 mA