Datasheet

13
FIGURE 13. CONTROL-TO-SWITCH FEEDTHROUGH NOISE
TEST CIRCUIT
FIGURE 14. SWITCH OFF SIGNAL FEEDTHROUGH
Analog Test Circuits (Continued)
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
CD54HC4351, CD74HC4351, CD74HCT4351, CD74HC4352