2

520 - 23 - 03

Supply Voltage

4.5

5

13.2

V

Supply Current

Outputs at Logic 1

-

4.6

6.5

mA

-

5.0

7.0

mA

Video Input (Pin 2)

(a) Signal Level

0.5

-

4

Vp-p

(b) Clamp Current

Charge

500

650

850

µA

Discharge - normal

9

11

13

µA

- Nosync flag raised

65

95

115

µA

(c) Delay to raising of Nosync flag Video input held high

64

95

130

µs

(d) Sync Tip Clamp Voltage

-

1.55

-

V

Sync Slice Level

Relative to sync tip clamp voltage

70

77

84

mV

See Note 1

1.14

1.24

1.34

V

Composite Sync Out (Pin 1)

See Note 2

40

60

80

ns

Delay from Video

Back Porch Pulse Out (Pin 5)

(a) Delay from Rising

Edge of Sync

400

500

650

ns

(b) Pulse Width

2.0

2.5

3.2

µs

Vertical Sync Out (Pin 3)

(a) Pulse Width

Serrations during vertical interval

197.7

197.7

197.7

µs

(b) Default Starting Time

No serrations during the vertical interval

48

65

82

µs

Horizontal Scan Rate

15

-

130

kHz

Logic Outputs

4.2

4.6

-

V

11.2

11.6

-

V

2.4

3.4

-

V

9.4

10.4

-

V

-

0.3

0.6

V

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

GS1881 ELECTRICAL CHARACTERISTICS

(V

CC

= 5 V, R

SET

= 680 k

Ω, T

A

= 25

° C, unless otherwise specified)

Note 1: When placing the R

SET

resistor and the 0.1

µF 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.

CAUTION

ELECTROSTATIC

SENSITIVE DEVICES

DO NOT OPEN PACKAGES OR HANDLE

EXCEPT AT A STATIC-FREE WORKSTATION

ORDERING INFORMATION

Part Number

Package Type

Temperature Range

GS1881 - CDA

8 PDIP

0

° to 70° C

GS1881 - CKA

8 SOIC

0

° to 70° C

GS1881 - CTA

8 TAPE

0

° to 70° C

GS1881 - IDA

8 PDIP

-25

° to 85° C

GS1881 - IKA

8 SOIC

-25

° to 85° C

GS1881 - ITA

8 TAPE

-25

° to 85° C