Datasheet

RS-485 Transceivers with Integrated
100 Ω /120 Ω Termination Resistors
MAX13450E/MAX13451E
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +4.5V to +5.5V, V
L
= +1.62V to V
CC
, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5V,
V
L
= +1.8V, and T
A
= +25NC.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Driver Short-Circuit Foldback
Output Current
I
OSDF
(V
CC
- 1V) P V
OUT
P +12V
+15
mA
-7V P V
OUT
P 0V
-15
RECEIVER
Input Current (A and B) I
A, B
DE = RE = GND;
TERM = V
L
; V
CC
= GND
or 5.5V
V
A
or V
B
= +12V 125
FA
V
A
or V
B
= -7V -100
Receiver Differential Threshold
Voltage
V
TH
-7V P V
CM
P +12V,
DE = RE = GND;
TERM = V
L
; V
CC
= GND
V
A
or V
B
= +12V -200 -50 mV
Receiver Input Hysteresis
DV
TH
V
A
+ V
B
= 0V 15 mV
LOGIC INTERFACE
Input High Voltage V
IH
DI, DE, RE, TERM, SRL, TERM100, INV
2/3 x V
L
V
Input Low Voltage V
IL
DI, DE, RE, TERM, SRL, TERM100, INV
1/3 x V
L
V
Input Current I
IN
DI, DE, RE, TERM, TERM100, SRL, INV
-1 +1
FA
Receiver Output High Voltage V
ROH
I
OUT
= -1mA V
L
- 0.6 V
Receiver Output Low Voltage V
ROL
I
OUT
= +1mA 0.4 V
Three-State Output Current at
Receiver
I
OZR
0V P V
RO
P V
L
-1 +0.01 +1
FA
Receiver Output Short-Circuit
Current
I
OSR
0V P V
RO
P V
L
Q1 Q80
mA
Fault Output High Voltage
(MAX13451E)
V
FAULTH
Fault condition, I
OUT
= -1mA V
L
- 0.6 V
Fault Output Low Voltage
(MAX13451E)
V
FAULTL
Nonfault condition; I
OUT
= +1mA 0.4 V
TERMINATION RESISTOR
100I Termination Resistor
R
100
TERM = low, TERM100 = high
85 100 115
I
120I Termination Resistor
R
120
TERM = low, TERM100 = low
101 120 139
I
Single-Ended Input Capacitance
vs. GND
C
IN
f = 1MHz (MAX13451E only) 40 pF
ESD PROTECTION
ESD Protection (A, B, Y, Z)
Human Body Model
Q30
kVIEC 61000-4-2 Air Gap Discharge
Q15
IEC 61000-4-2 Contact Discharge
Q7
ESD Protection (All Other Pins) Human Body Model
Q2