GS4881 ELECTRICAL CHARACTERISTICS
PARAMETER
Supply Voltage
Supply Current
(V
CC
= 5 V, R
SET
= 680 kΩ, T
A
= 25° C, unless otherwise specified)
CONDITIONS
MIN
4.5
TYP
5
4.6
5.0
MAX
13.2
6.5
7.0
UNITS
V
mA
mA
Outputs at Logic 1
V
CC
= 5 V
V
CC
= 12 V
-
-
Video Input (Pin 2)
(a) Signal Level
(b) Clamp Current
V
CC
= 5 V
Charge
Discharge - normal
- Nosync flag raised
(c) Delay to raising of Nosync flag Video input held high
(d) Sync Tip Clamp Voltage
Sync Slice Level
R
SET
Pin Reference Voltage (Pin 6)
Composite Sync Out (Pin 1)
Delay from Video
Back Porch Pulse Out (Pin 5)
(a) Delay from Rising
Edge of Sync
(b) Pulse Width
(c) Occurence Rate
Vertical Sync Out (Pin 3)
(a) Pulse Width
(b) Default Starting Time
Horizontal Scan Rate
Logic Outputs
(a) V
OH
I
OH
= 40
µA
I
OH
= 1.6 mA
(b) V
OL
I
OL
= -1.6 mA
V
CC
= 5 V
V
CC
= 12 V
V
CC
= 5 V
V
CC
= 12 V
4.2
11.2
2.4
9.4
-
4.6
11.6
3.4
10.4
0.3
-
-
-
-
0.6
V
V
V
V
V
Serrations during vertical interval
No serrations during the vertical interval
Modified R
SET
197.7
48
15
197.7
65
-
197.7
82
130
µs
µs
kHz
400
2.0
H
500
2.5
H
650
3.2
H
ns
µs
Relative to sync tip clamp voltage
See Note 1
See Note 2
C
L
= 15p
C
L
= 15p
0.5
500
9
65
64
-
70
1.14
40
-
650
11
95
95
1.55
77
1.24
60
4
850
13
115
130
-
84
1.34
80
Vp-p
µA
µA
µA
µs
V
mV
V
ns
Note 1: When placing the R
SET
resistor and the 0.1µF decoupling capacitor careful attention should be made to ensure that they are as close
as possible to pin 6. Care should also be taken to avoid parasitic capacitive coupling from any output pin (pins 1, 3, 5 and 7) to pin 6.
Note 2: Measured from slicing point of input falling edge to 50% point of composite sync falling edge.
ORDERING INFORMATION
Part Number
GS4881 - CDA
GS4881 - CKA
GS4881 - CTA
GS4881 - IDA
GS4881 - IKA
GS4881 - ITA
Package Type
8 PDIP
8 SOIC
8 TAPE
8 PDIP
8 SOIC
8 TAPE
Temperature Range
0° to 70° C
0° to 70° C
0° to 70° C
-25° to 85° C
-25° to 85° C
-25° to 85° C
3
520 - 23 - 03
GENNUM [ GENNUM CORPORATION ]
