SP721 查看數據表（PDF） - Harris Semiconductor

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SP721

Electronic Protection Array for ESD and Over-Voltage Protection

Harris Semiconductor 

100 TA = 25oC

SINGLE PULSE

80

SP721

2.5 TA = 25oC

SINGLE PULSE

2

60

1.5

40

1

IFWD

EQUIV. SAT. ON

20

THRESHOLD ~ 1.1V

0.5

VFWD

0

600

800

1000

FORWARD SCR VOLTAGE DROP (mV)

1200

FIGURE 2. LOW CURRENT SCR FORWARD VOLTAGE DROP

CURVE

0

0

1

2

3

FORWARD SCR VOLTAGE DROP (V)

FIGURE 3. HIGH CURRENT SCR FORWARD VOLTAGE DROP

CURVE

+VCC

INPUT

DRIVERS

OR

SIGNAL

SOURCES

+VCC

LINEAR OR

DIGITAL IC

INTERFACE

IN 1 - 3

IN 5 - 7

TO +VCC

V+

SP721

V-

SP721 INPUT PROTECTION CIRCUIT (1 OF 6 SHOWN)

FIGURE 4. TYPICAL APPLICATION OF THE SP721 AS AN INPUT CLAMP FOR OVER-VOLTAGE, GREATER THAN 1VBE ABOVE V+ OR

LESS THAN -1VBE BELOW V-

6-11

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