ISL43840 Intersil Corporation, ISL43840 Datasheet - Page 8

• Manufacturer Part Number: ISL43840
• Description: Low-Voltage/ Single and Dual Supply/ Dual 4 to 1 Multiplexer Analog Switch with Enable
• Manufacturer: Intersil Corporation

Test Circuits and Waveforms
Logic input waveform is inverted for switches that have the opposite
logic sense.
Logic input waveform is inverted for switches that have the opposite
logic sense.
FIGURE 1C. ADDRESS t
OUTPUT
FIGURE 1A. ENABLE t
SWITCH
OUTPUT
SWITCH
OUTPUT
SWITCH
LOGIC
LOGIC
INPUT
INPUT
LOGIC
INPUT
V
OUT
VNO0
VNO0
VNO
FIGURE 2A. Q MEASUREMENT POINTS
0V
0V
3V
0V
3V
0V
X
Q = ∆V
OFF
t
OFF
OUT
x C
ON
TRANS
t
TRANS
L
50%
50%
/ t
ON
OFF
8
MEASUREMENT POINTS
90%
t
TRANS
MEASUREMENT POINTS
10%
t
ON
V
V
OUT
OUT
∆V
OFF
OUT
FIGURE 2. CHARGE INJECTION
FIGURE 1. SWITCHING TIMES
t
t
t
t
r
f
r
f
90%
< 20ns
< 20ns
90%
< 20ns
3V
0V
< 20ns
ISL43840
Repeat test for other switches. C
capacitance.
Repeat test for other switches. C
capacitance.
Repeat test for other switches.
V-
V
LOGIC
INPUT
LOGIC
INPUT
G
C
V+
V+
FIGURE 1B. ENABLE t
C
FIGURE 1D. ADDRESS t
C
R
0Ω
G
FIGURE 2B. Q TEST CIRCUIT
V
V
OUT
OUT
ADD1, 2
NO1-NO3
NO0
ENABLE
NO0
NOX
ADDX
NO3
NO1-NO2
=
=
V+
V
V
V+
V+
GND
GND
GND
(NO)
(NO)
C
L
L
ON
includes fixture and stray
includes fixture and stray
ADD1, 2
C
ENABLE
TRANS
C
ENABLE
------------------------------
R
------------------------------
R
/ t
COMX
L
L
COM
OFF
COM
+
+
V-
R
R
R
R
L
L
V-
V-
(
(
TEST CIRCUIT
LOGIC
TEST CIRCUIT
INPUT
ON
ON
C
)
)
C
C
300Ω
V
300Ω
R
V
R
OUT
OUT
L
L
C
1nF
L
35pF
C
35pF
C
V
L
L
OUT