Datasheet

MAX31911
Industrial, Octal, Digital Input
Translator/Serializer
3Maxim Integrated
DC ELECTRICAL CHARACTERISTICS
(V
CC24V
= 7V to 36V, T
J
= -40NC to +150NC, unless otherwise noted.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Field-Supply Current I
CC24V
IN1–IN8 = 24V, 5VOUT = open,
RT1–RT8 = GND, all logic inputs open
1.4 2.0 mA
Field-Supply UVLO Off/On V
ONUVLO
9 10 V
Field-Supply UVLO On/Off V
OFFUVLO
7 8 V
Field Input Threshold High-
to-Low
V
IN-(INF)
2.2kI external series resistor
6 7.5 V
Field Input Threshold Low-to-
High
V
IN+(INF)
2.2kI external series resistor
8.5 10 V
Field Input Hysteresis V
HYS(INF)
2.2kI external series resistor
1 V
Input Threshold High-to-Low
(at IC pin)
V
TH-(INP)
2 2.5 V
Input Threshold Low-to-High
(at IC pin)
V
TH+(INP)
3.5 4 V
Input Threshold Hysteresis
(at IC pin)
V
HYS(INP)
1 V
Field Input Pin Resistance R
INP
0.8
kI
Field Input Current Limit I
INLIM
R
REF
= 15kI, V
CC24V
= 18V to 30V
(Note 5)
2.2 2.4 2.6 mA
Filter Time Constant t
FILTER
DB1/DB0 = 0/0: no filtering 0
ms
DB1/DB0 = 0/1 0.008 0.025 0.038
DB1/DB0 = 1/0 0.25 0.75 1.1
DB1/DB0 = 1/1 1.0 3 4.5
Linear Regulator Output V
5VOUT
Max I
LOAD
= 50mA 4.75 5.0 5.25 V
Regulator Line Regulation dVREG
LINE
I
LOAD
= 50mA 10 20 mV
Regulator Load Regulation dVREG
LOAD
I
LOAD
= 1mA to 50mA 20 50 mV
Logic-Low Output Voltage V
OL
I
OL
= 4mA 0.4 1.0 V
Logic-High Output Voltage V
OH
I
OH
= -4mA 4.0 V
Logic-Input Trip Point V
IH-IL
0.3 x
V
5VOUT
0.5 x
V
5VOUT
0.7 x
V
5VOUT
V
Logic-Input Leakage Current I
IL
-50 -30 -15
FA
Overtemperature Alarm T
ALRM
135
NC