EL1881 查看數據表（PDF） - Intersil

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EL1881

Sync Separator, Low Power

Intersil 

EL1881C

Pin Descriptions

PIN NUMBER

PIN NAME

PIN FUNCTION

1

Composite Sync Composite sync pulse output; sync pulses start on a falling edge and end on a rising edge

Out

2

Composite Video AC coupled composite video input; sync tip must be at the lowest potential (positive picture phase)

In

3

Vertical Sync Out Vertical sync pulse output; the falling edge of vert sync is the start of the vertical period

4

GND

Supply ground

5

Burst/Back Porch Burst/back porch output; low during burst portion of composite video

Output

6

RSET (Note 1)

An external resistor to ground sets all internal timing; a 681k 1% resistor will provide correct timing for

NTSC signals

7

Odd/Even Output Odd/even field output; high during odd fields, low during even fields; transitions occur at start of vert sync

pulse

8

VDD 5V

NOTE:

1. RSET must be a 1% resistor

Positive supply (5V)

3

FN7018.1

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