Datasheet

7
Analog Test Circuits
FIGURE 4. CROSSTALK BETWEEN TWO SWITCHES TEST CIRCUIT
FIGURE 5. FREQUENCY RESPONSE TEST CIRCUIT FIGURE 6. TOTAL HARMONIC DISTORTION TEST CIRCUIT
FIGURE 7. CONTROL-TO-SWITCH FEEDTHROUGH NOISE
TEST CIRCUIT
FIGURE 8. SWITCH OFF SIGNAL FEEDTHROUGH
V
CC
V
IS
0.1µF
RC
V
CC
/2
V
OS1
SWITCH
ON
V
CC
V
CC
/2
R
RC
V
CC
/2
V
OS2
SWITCH
OFF
dB
METER
V
IS
f
IS
= 1MHz SINEWAVE
R = 50Ω
C = 10pF
R
V
CC
V
IS
0.1µF
50Ω 10pF
V
CC
/2
V
OS
SWITCH
ON
dB
METER
V
CC
V
IS
10µF
10kΩ 50pF
V
CC
/2
V
OS
SWITCH
ON
DISTORTION
METER
V
I
= V
IH
f
IS
= 1kHz TO 10kHz
V
IS
SINE
WAVE
SWITCH
ALTERNATING
ON AND OFF
t
r
, t
f
≤ 6ns
f
CONT
= 1MHz
50% DUTY
CYCLE
SCOPE
V
P-P
V
OS
E
V
OS
50pF
600Ω
V
CC
/2
600Ω
V
CC
/2
V
CC
V
CC
V
IS
0.1µF
RC
V
CC
/2
V
OS
SWITCH
OFF
dB
METER
R
V
CC
/2
V
C
= V
IL
f
IS
≥ 1MHz SINEWAVE
R = 50Ω
C = 10pF
Test Circuits and Waveforms
FIGURE 9. HC TRANSITION TIMES AND PROPAGATION
DELAY TIMES, COMBINATION LOGIC
FIGURE 10. HCT TRANSITION TIMES AND PROPAGATION
DELAY TIMES, COMBINATION LOGIC
t
PHL
t
PLH
t
THL
t
TLH
90%
50%
10%
50%
10%
INVERTING
OUTPUT
INPUT
GND
V
CC
t
r
= 6ns t
f
= 6ns
90%
t
PHL
t
PLH
t
THL
t
TLH
2.7V
1.3V
0.3V
1.3V
10%
INVERTING
OUTPUT
INPUT
GND
3V
t
r
= 6ns
t
f
= 6ns
90%
CD54HC4066, CD74HC4066, CD74HCT4066