6

FN6043.3

January 23, 2006

Test Circuits and Waveforms

Logic input waveform is inverted for switches that have the opposite

logic sense.

FIGURE 1A. MEASUREMENT POINTS

capacitance.

FIGURE 1B. TEST CIRCUIT

Logic input waveform is inverted for switches that have the opposite

logic sense.

FIGURE 1C. ADDRESS MEASUREMENT POINTS

capacitance.

FIGURE 1D. ADDRESS TEST CIRCUIT

FIGURE 1. SWITCHING TIMES

FIGURE 2A. MEASUREMENT POINTS

FIGURE 2B. TEST CIRCUIT

FIGURE 2. CHARGE INJECTION

50%

3V

0V

LOGIC

INPUT

SWITCH

OUTPUT

90%

0V

90%

V(NO or NC)

()

+

------------------------------

=

LOGIC

INPUT

COM

NO0

INH

300

Ω

35pF

GND

V+

C

NO1-NO3

V+

ADD1,

C

ADD2

50%

90%

3V

0V

0V

LOGIC

INPUT

SWITCH

OUTPUT

90%

V(NO or NC)

()

+

------------------------------

=

LOGIC

INPUT

COM

NO0

ADD1

300

Ω

35pF

GND

V+

C

NO1-NO3

V+

ADD2

INH

C

∆V

OUT

OFF

ON

OFF

Q =

∆V

SWITCH

OUTPUT

LOGIC

INPUT

3V

0V

GND

COM

NO or NC

V+

C

LOGIC

INPUT

INH

ADD1

ADD2

ISL43640