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MAX3085EPA PDF даташит

Спецификация MAX3085EPA изготовлена ​​​​«Maxim Integrated» и имеет функцию, называемую «Fail-Safe / High-Speed 10Mbps / Slew-Rate-Limited RS-485/RS-422 Transceivers».

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Номер произв MAX3085EPA
Описание Fail-Safe / High-Speed 10Mbps / Slew-Rate-Limited RS-485/RS-422 Transceivers
Производители Maxim Integrated
логотип Maxim Integrated логотип 

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MAX3085EPA Даташит, Описание, Даташиты
19-1800; Rev 0; 9/00
±15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
General Description
The MAX3080E–MAX3089E are ±15kV electrostatic dis-
charge (ESD)-protected, high-speed transceivers for RS-
485/RS-422 communication that contain one driver and
one receiver. These devices feature fail-safe circuitry,
which guarantees a logic-high receiver output when the
receiver inputs are open or shorted. This means that the
receiver output will be a logic high if all transmitters on a
terminated bus are disabled (high impedance). The
MAX3080E/MAX3081E/MAX3082E feature reduced
slew-rate drivers that minimize EMI and reduce reflec-
tions caused by improperly terminated cables, allowing
error-free data transmission up to 115kbps. The
MAX3083E/MAX3084E/MAX3085E offer higher driver
output slew-rate limits, allowing transmit speeds up to
500kbps. The MAX3086E/MAX3087E/ MAX3088Es’ dri-
ver slew rates are not limited, making transmit speeds
up to 10Mbps possible. The MAX3089E’s slew rate is
selectable between 115kbps, 500kbps, and 10Mbps by
driving a selector pin with a single three-state driver. All
devices feature enhanced ESD protection. All transmitter
outputs and receiver inputs are protected to ±15kV
using the Human Body Model.
These transceivers typically draw 375µA of supply
current when unloaded, or when fully loaded with the dri-
vers disabled.
All devices have a 1/8-unit-load receiver input impedance
that allows up to 256 transceivers on the bus. The
MAX3082E/MAX3085E/MAX3088E are intended for half-
duplex communications, while the MAX3080E/MAX3081E/
MAX3083E/MAX3084E/MAX3086E/MAX3087E are
intended for full-duplex communications. The MAX3089E
is selectable between half-duplex and full-duplex opera-
tion. It also features independently programmable
receiver and transmitter output phase via separate pins.
Features
o ESD Protection for RS-485 I/O Pins
±15kV, Human Body Model
o True Fail-Safe Receiver While Maintaining
EIA/TIA-485 Compatibility
o Enhanced Slew-Rate Limiting Facilitates
Error-Free Data Transmission
(MAX3080E–MAX3085E/MAX3089E)
o 1nA Low-Current Shutdown Mode (Except
MAX3081E/MAX3084E/MAX3087E)
o Pin-Selectable Full/Half-Duplex Operation
(MAX3089E)
o Phase Controls to Correct for Twisted-Pair
Reversal (MAX3089E)
o Allow Up to 256 Transceivers on the Bus
Applications
RS-422/RS-485 Communications
Level Translators
Transceivers for EMI-Sensitive Applications
Industrial-Control Local Area Networks
Ordering Information
PART
MAX3080ECSD
MAX3080ECPD
MAX3080EESD
MAX3080EEPD
TEMP. RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
14 SO
14 Plastic DIP
14 SO
14 Plastic DIP
Ordering Information continued at end of data sheet.
Selector Guide
Part
Half/Full
Duplex
Data
Rate
(Mbps)
Slew-
Rate
Limited
Low- Receiver/ Quiescent Transceivers
Power
Driver Current
On
Shutdown Enable (µA) Bus (µA)
MAX3080E
Full
0.115
Yes
Yes Yes 375
256
MAX3081E
Full
0.115
Yes
No
No 375
256
MAX3082E
Half
0.115
Yes
Yes Yes 375
256
MAX3083E
Full
0.5
Yes Yes Yes 375
256
MAX3084E
Full
0.5
Yes
No
No 375
256
MAX3085E
Half
0.5
Yes Yes Yes 375
256
MAX3086E
Full
10
No Yes Yes 375 256
MAX3087E
MAX3088E
Full
Half
10
10
No No No 375 256
No Yes Yes 375 256
MAX3089E Selectable Selectable Selectable
Yes
Yes
375
256
*Pin compatible with 75180, with additional features implemented using pins 1, 6, 8, and 13.
Pin
Count
14
8
8
14
8
8
14
8
8
14
Industry-
Standard
Pinout
75180
75179
75176
75180
75179
75176
75180
75179
75176
75180*
________________________________________________________________ Maxim Integrated Products 1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.









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MAX3085EPA Даташит, Описание, Даташиты
±15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC) ............................................................+7V
Control Input Voltage (RE, DE)...................-0.3V to (VCC + 0.3V)
Special Input Voltage
(H/F, SRL, TXP, RXP)..............................-0.3V to (VCC + 0.3V)
Driver Input Voltage (DI).............................-0.3V to (VCC + 0.3V)
Driver Output Voltage (A, B, Y, Z)........................................±13V
Receiver Input Voltage (A, B) ..............................................±13V
Receiver Input Voltage, Full Duplex (A, B) ..........................±25V
Receiver Output Voltage (RO)....................-0.3V to (VCC + 0.3V)
Continuous Power Dissipation
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ...727mW
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
14-Pin Plastic DIP (derate 10.0mW/°C above +70°C) ....800mW
14-Pin SO (derate 8.33mW/°C above +70°C)..............667mW
Operating Temperature Ranges
MAX308_EC_ _ ...................................................0°C to +70°C
MAX308_EE_ _ ................................................-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
(VCC = +5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
DRIVER
Differential Driver Output
(No Load)
VOD1
Differential Driver Output
VOD2
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
VOD
VOC
VOC
VIH1
VIL1
VHYS
IIN1
IIN2
VIH2
VIM2
VIL2
SRL Input Current
IIN3
Input Current (A and B)
Output Leakage (Y and Z)
Full Duplex
Driver Short-Circuit Output
Current (Note 4)
IIN4
IO
VOD1
Figure 5
Figure 5, R = 50(RS-422)
Figure 5, R = 27(RS-485)
Figure 5, R = 50or R = 27
Figure 5, R = 50or R = 27
Figure 5, R = 50or R = 27
DE, DI, RE, H/F, TXP, RXP
DE, DI, RE, H/F, TXP, RXP
MAX3080E–MAX3085E, and MAX3089E with
SRL = VCC or unconnected
DE, DI, RE
H/F, TXP, RXP, internal pulldown
SRL
SRL (Note 3)
SRL
SRL = VCC
SRL = GND (Note 3)
DE = GND,
VIN = 12V
VCC = GND or 5.25V VIN = -7V
DE = GND,
VCC = GND or 5.25V
-7V VOUT VCC
0V VOUT 12V
0V VOUT VCC
VIN = 12V
VIN = -7V
MIN TYP
2.0
1.5
2.0
100
10
VCC - 0.8
0.4VCC
-75
-100
-250
±25
MAX UNITS
5V
V
0.2 V
3V
0.2
0.8
±2
40
0.6VCC
0.8
75
125
-75
125
V
V
V
mV
µA
V
V
V
µA
µA
µA
250 mA
2 _______________________________________________________________________________________









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MAX3085EPA Даташит, Описание, Даташиты
±15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
RECEIVER
UNITS
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
VTH
VTH
VOH
VOL
IOZR
RIN
IOSR
-7V VCM 12V
IO = -4mA, VID = -50mV
IO = 4mA, VID = -200mV
0.4V VO 2.4V
-7V VCM 12V
0V VRO VCC
-200 -125
25
VCC -1.5
96
±7
-50
0.4
±1
±95
mV
mV
V
V
µA
k
mA
Supply Current
Supply Current in Shutdown
Mode
ESD Protection for Y, Z, A, B
ICC
ISHDN
No load,
RE = DI = GND
or VCC, SRL = VCC
No load,
RE = DI = GND
or VCC, SRL = GND
DE = VCC
DE = GND
DE = VCC
DE = GND
DE = GND, V RE = VCC
Human Body Model
430 900
375
475
420
0.001
±15
600
1000
800
10
µA
µA
µA
kV
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: VOD and VOC are the changes in VOD and VOC, respectively, when the DI input changes state.
Note 3: The SRL pin is internally biased to VCC / 2 by a 100k/100kresistor-divider. It is guaranteed to be VCC / 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.
_______________________________________________________________________________________ 3










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