Datasheet

MAX378/MAX379
High-Voltage, Fault-Protected
Analog Multiplexers
_______________________________________________________________________________________ 3
Note 2: When the analog signal exceeds +13.5V or -12V, the blocking action of Maxim’s gate structure goes into operation. Only
leakage currents flow and the channel ON resistance rises to infinity.
Note 3: The value shown is the steady-state value. The transient leakage is typically 50µA. See
Detailed Description .
Note 4: Guaranteed by other static parameters.
Note 5: Digital input leakage is primarily due to the clamp diodes. Typical leakage is less than 1nA at +25°C.
Note 6: Leakage currents not tested at T
A
= cold temp.
Note 7: Electrical characteristics, such as ON Resistance, will change when power supplies other than ±15V are used.
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +15V, V- = -15V; V
AH
(Logic Level High) = +2.4V, V
AL
(Logic Level Low) = +0.8V, unless otherwise noted.)
pF0.1C
DS(OFF)
Input to Output Capacitance
V
EN
= 0.8V or 2.4V
All V
A
= 0V or 5V
+25°C
V
EN
= 0.8V, R
L
= 1kΩ, C
L
= 15pF
V = 7V
RMS
, f = 100kHz
(Note 7)
MAX378
MAX379
CONDITIONS
0.1
V±4.5 ±18V
OP
Power-Supply Range for
Continuous Operation
0.3 0.7
ns
1000
mA
0.1 0.6
I+Positive Supply Current
pF5C
A
Digital Input Capacitance
12
dB50 68OFF
(ISO)
“OFF Isolation”
pF5C
IN(OFF)
Channel Input Capacitance
pF
25
C
OUT(OFF)
Channel Output Capacitance
UNITS
-55°C to +125°C
SYMBOLPARAMETER
Figure 3
400 750
t
ON(EN)
Enable Delay (ON)
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
TEMP
+25°C
±4.5 ±18
0.5 1.0
1500
0.2 1.0
5
12
50 68
5
25
0°C to +70°C
and
-40°C to +85°C
400 1000
µs
3.5
1.2
t
SETT
Settling Time (0.1%)
(0.01%)
+25°C
3.5
1.2
Figure 1 µs0.5 1.0t
A
Access Time +25°C 0.5 1.0
V
EN
= +5V, V
IN
= ±10V
A
0
, A
1
, A
2
strobed
ns25 200t
ON
-t
OFF
Break-Before-Make Delay
(Figure 2)
+25°C 25 200
ns
1000
Figure 3
300 500
t
OFF(EN)
Enable Delay (OFF)
+25°C
1000
300
V
EN
= 0.8V or 2.4V
All V
A
= 0V or 5V
0.02 0.2
mA
0.01 0.1
I-Negative Supply Current
+25°C
0.02 0.1
0.01 0.1
MIN TYP MAX MIN TYP MAX
SUPPLY
DYNAMIC
Full
Full
Full
Full