MAX3140 Maxim, MAX3140 Datasheet - Page 3

• Manufacturer Part Number: MAX3140
• Description: SPI/MICROWIRE-Compatible UART with Integrated True Fail-Safe RS-485/RS-422 Transceivers
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
are measured with V
SPI/MICROWIRE-Compatible UART with Integrated
UART IRQ OUTPUT (Open Drain)
RS-485 DRIVER
RS-485 RECEIVER
Output Low Voltage
Output Leakage
Output Capacitance
Differential Output Voltage
Change in Magnitude of
Differential Output Voltage
Common-Mode Output
Voltage
Change In Magnitude of
Common-Mode Voltage
Input High Voltage
Input Low Voltage
DI Input Hysteresis
Input Current
SRL Input High Voltage
SRL Input Middle Voltage
SRL Input Low Voltage
SRL Input Current
Full-Duplex Input Current
(A and B)
Full-Duplex Output Leakage
(Y and Z)
Short-Circuit Output Current
Differential Threshold Voltage
Input Hysteresis
Output High Voltage
Output Low Voltage
Three-State Output Current
Input Resistance
Output Short-Circuit Current
CC
= +5V ±5%, DE = V
PARAMETER
CC
_______________________________________________________________________________________
True Fail-Safe RS-485/RS-422 Transceivers
= +5V, UART configured for 9600 baud, T
CC
, RE = GND, SHDN = V
SYMBOL
C
I
∆V
∆V
V
V
∆V
V
V
V
I
I
I
LKG3
V
V
V
V
V
V
V
I
I
I
I
V
OUT2
OSD
OZR
R
OSR
OD1
OD2
HYS
IN1
IN2
IN3
IN4
OL2
I
IM2
IH1
IH2
OH
OC
IL1
IL2
TH
OL
O
OD
OC
IN
TH
I
V
No load, Figure 1
R = 50Ω (RS-422), Figure 1
R = 27Ω (RS-422), Figure 1
R = 50Ω or R = 27Ω, Figure 1 (Note 2)
R = 50Ω or R = 27Ω, Figure 1
R = 50Ω or R = 27Ω, Figure 1 (Note 2)
DE, Dl, RE
H/F, TXP, RXP
DE, Dl, RE, H/F, TXP, RXP
SRL = V
DE, DI, RE
H/F, TXP, RXP, internal pull-down
(Note 3)
SRL = V
SRL = GND (Note 3)
DE = GND
V
DE = GND
V
(Note 4)
-7V ≤ V
I
I
0.4V ≤ V
-7V ≤ V
0 ≤ V
SINK
SOURCE
SINK
CC
CC
IRQ
CC
= GND or 5.25V
= GND or 5.25V
RO
= 4mA
= V
= 4mA, V
, f
CM
CM
CC
CC
O
≤ V
XTL
CC
= 4mA, V
≤ 2.4V
≤ +12V
≤ 12V
or unconnected
CC
= 1.8432MHz, T
ID
CONDITIONS
= -200mV
A
ID
= +25°C.) (Note 1)
= -50mV
V
V
V
V
-7V ≤ V
0 ≤ V
0 ≤ V
IN
IN
IN
IN
= 12V
= -7V
= 12V
= -7V
A
OUT
OUT
= T
OUT
MIN
≤ 12V
≤ V
≤ V
CC
to T
CC
MAX
, unless otherwise noted. Typical values
V
0.4
V
CC
CC
-100
-250
-200
MIN
±25
-75
2.0
1.5
2.0
2.4
±7
10
96
·
- 0.8
- 1.5
V
CC
-125
TYP
100
25
5
0.6
MAX
±95
·
125
125
250
-75
-50
0.4
0.2
0.2
0.8
0.8
0.4
±1
±2
±1
40
75
5
3
V
CC
UNITS
mV
mA
mV
mV
mA
kΩ
µA
pF
µA
µA
µA
µA
µA
V
V
V
V
V
V
V
V
V
V
V
V
3