14-Pin SO (derate 8.33mW/°C above +70°C)..............667mW
Operating Temperature Ranges
MAX308_C_ _ .....................................................0°C to +70°C
MAX308_E_ _...................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5V and T
A
= +25°C.) (Note 1)
PARAMETER
DRIVER
Differential Driver Output
(no load)
Differential Driver Output
Change in Magnitude of
Differential Output Voltage
(Note 2)
Driver Common-Mode Output
Voltage
Change In Magnitude of
Common-Mode Voltage (Note 2)
Input High Voltage
Input Low Voltage
DI Input Hysteresis
SRL Input Current
Input High Voltage
Input Middle Voltage
Input Low Voltage
SRL Input Current
Input Current (A and B)
Full Duplex
Output Leakage (Y and Z)
Full Duplex
Driver Short-Circuit Output
Current (Note 4)
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
OD1
V
OD2
∆V
OD
V
OC
∆V
OC
V
IH1
V
IL1
V
HYS
I
IN1
I
IN2
V
IH2
V
IM2
V
IL2
I
IN3
I
IN4
I
O
Figure 5
Figure 5, R = 50Ω (RS-422)
Figure 5, R = 27Ω (RS-485)
Figure 5, R = 50Ω or R = 27Ω
Figure 5, R = 50Ω or R = 27Ω
Figure 5, R = 50Ω or R = 27Ω
DE, DI,
RE,
H/F, TXP, RXP
DE, DI,
RE,
H/F, TXP, RXP
MAX3080–MAX3085, and MAX3089 with
SRL = V
CC
or unconnected
DE, DI,
RE
H/F, TXP, RXP, internal pulldown
SRL
SRL (Note 3)
SRL
SRL = V
CC
SRL = GND (Note 3)
DE = GND,
V
CC
= GND or 5.25V
DE = GND,
V
CC
= GND or 5.25V
-7V
≤
V
OUT
≤
V
CC
0V
≤
V
OUT
≤
12V
0V
≤
V
OUT
≤
V
CC
V
IN
= 12V
V
IN
= -7V
V
IN
= 12V
V
IN
= -7V
-100
-250
-75
10
V
CC
- 0.8
0.4V
CC
2.0
2.0
1.5
5
V
V
0.2
3
0.2
V
V
V
V
0.8
100
±2
40
0.6V
CC
0.8
75
125
-75
125
V
mV
µA
V
V
V
µA
µA
µA
V
OD1
250
±25
mA
2
Maxim Integrated
MAX3080–MAX3089
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5V and T
A
= +25°C.) (Note 1)
PARAMETER
RECEIVER
Receiver Differential Threshold
Voltage
Receiver Input Hysteresis
Receiver Output High Voltage
Receiver Output Low Voltage
Three-State Output Current at
Receiver
Receiver Input Resistance
Receiver Output Short-Circuit
Current
SUPPLY CURRENT
No load,
RE
= DI = GND
or V
CC
, SRL = V
CC
No load,
RE
= DI = GND
or V
CC
, SRL = GND
DE = GND, V
RE
= V
CC
DE = V
CC
DE = GND
DE = V
CC
DE = GND
430
375
475
420
0.001
900
µA
600
1000
µA
800
10
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
TH
∆V
TH
V
OH
V
OL
I
OZR
R
IN
I
OSR
-7V
≤
V
CM
≤
+12V
I
O
= -4mA, V
ID
= -50mV
I
O
= 4mA, V
ID
= -200mV
0.4V
≤
V
O
≤
2.4V
-7V
≤
V
CM
≤
+12V
0V
≤
V
RO
≤
V
CC
-200
V
CC
-1.5
-125
25
-50
mV
mV
V
V
µA
kΩ
0.4
±1
96
±7
±95
mA
Supply Current
I
CC
Supply Current in Shutdown
Mode
I
SHDN
Note 1:
All currents into the device are positive; all currents out of the device are negative. All voltages are referred to device
ground unless otherwise noted.
Note 2:
∆V
OD
and
∆V
OC
are the changes in V
OD
and V
OC
, respectively, when the DI input changes state.
Note 3:
The SRL pin is internally biased to V
CC
/ 2 by a 100kΩ/100kΩ resistor divider. It is guaranteed to be V
CC
/ 2 if left
unconnected.
Note 4:
Maximum current level applies to peak current just prior to foldback-current limiting; minimum current level applies during
current limiting.
Maxim Integrated
3
MAX3080–MAX3089
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
SWITCHING CHARACTERISTICS—MAX3080–MAX3082, and MAX3089 with
SRL = Unconnected
(V
CC
= +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5V and T
A
= +25°C.)
PARAMETER
Driver Input to Output
Driver Output Skew
|
t
DPLH
- t
DPHL
|
Driver Rise or Fall Time
Maximum Data Rate
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
Receiver Input to Output
SYMBOL
t
DPLH
t
DPHL
t
DSKEW
t
DR
, t
DF
f
MAX
t
DZH
t
DZL
t
DLZ
t
DHZ
t
RPLH
,
t
RPHL
t
RSKD
t
RZL
t
RZH
t
RLZ
t
RHZ
t
SHDN
t
DZH(SHDN)
t
DZL(SHDN)
t
RZH(SHDN)
t
RZL(SHDN)
Figures 8 and 10, C
L
= 100pF, S2 closed
Figures 8 and 10, C
L
= 100pF, S1 closed
Figures 8 and 10, C
L
= 15pF, S1 closed
Figures 8 and 10, C
L
= 15pF, S2 closed
Figures 11 and 13;
|
V
ID
|
≥
2.0V;
rise and fall time of V
ID
≤
15ns
Figures 11 and 13;
|
V
ID
|
≥
2.0V;
rise and fall time of V
ID
≤
15ns
Figures 6 and 12, C
L
= 100pF, S1 closed
Figures 6 and 12, C
L
= 100pF, S2 closed
Figures 6 and 12, C
L
= 100pF, S1 closed
Figures 6 and 12, C
L
= 100pF, S2 closed
(Note 5)
Figures 8 and 10, C
L
= 15pF, S2 closed
Figures 8 and 10, C
L
= 15pF, S1 closed
Figures 6 and 12, C
L
= 100pF, S2 closed
Figures 6 and 12, C
L
= 100pF, S1 closed
50
127
3
20
20
20
20
200
CONDITIONS
Figures 7 and 9, R
DIFF
= 54Ω,
C
L1
= C
L2
= 100pF
Figures 7 and 9, R
DIFF
= 54Ω,
C
L1
= C
L2
= 100pF
Figures 7 and 9, R
DIFF
= 54Ω,
C
L1
= C
L2
= 100pF
667
115
3500
3500
100
100
200
±30
50
50
50
50
600
6000
6000
3500
3500
MIN
500
500
TYP
2030
2030
-3
1320
MAX
2600
2600
±200
2500
UNITS
ns
ns
ns
kbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
|
t
RPLH
- t
RPHL
|
Differential
Receiver Skew
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable Time from Low
Receiver Disable Time from
High
Time to Shutdown
Driver Enable from Shutdown to
Output High
Driver Enable from Shutdown to
Output Low
Receiver Enable from Shutdown
to Output High
Receiver Enable from Shutdown
to Output Low
4
Maxim Integrated
MAX3080–MAX3089
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
SWITCHING CHARACTERISTICS—MAX3083–MAX3085, and MAX3089 with SRL = V
51单片机
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