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HART Modem ASIC | HT1200M | Page
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17
Characteristics
ABSOLUTE MAXIMUMS
Symbol
Parameter
Min.
Max.
Units
T
A
Ambient
-40
+85
℃
T
S
Storage Temperature
-55
+150
℃
V
DD
Supply Voltage
2.7
5.5
V
V
IN
, V
OUT
DC Input, Output
-0.3
VDD+0.3
V
T
L
Lead Temperature (soldering)
250
℃
DC CHARACTERISTICS
(VDD = 2.7V to 5.5V, VSS = 0V, TA = -40C to +85C)
Symbol
Parameter
VDD
Min.
Typical
Max.
Units
V
IL
Input Voltage, Low
2.7-5.5V
0.3*VDD V
V
IL
INRESET
、
INRTS
2.7-3.3V
0.9
1.2
1.4
V
V
IH
Input Voltage
2.7-5.5V
0.7*VDD
V
V
IH
INRESET
、
INRTS
2.7-3.3V
1.3
1.8
2.3
V
V
OL
Output Voltage, Low
(IOL = -1.8mA)
2.7-3.3V
0.4
V
V
OH
Output Voltage, High
(IOH = -1.8mA)
2.7-3.3V
VDD-1.0
V
C
IN
Input Capacitance
Analog Input
IRXA
Digital Input
2.1
20.8
3.1
pF
I
IL/IH
Input Leakage Current
±5
µA
I
OLL
Output Leakage Current
±5
µA
I
DD
Power Supply Current
(RBIAS=500kΩ,IAREF=1.235V)
3.3
5.0
170
200
µA
IAREF Analog Reference
3.3
5.0
1.2
1.235
2.5
2.6
V
ICDREF Carrier Detect Reference
(IAREF=.08V)
1.15
V
OCBIAS Comparator Bias Current
(RBIAS=500kΩ, IAREF=1.235V)
2.5
µA
