MAX3084 Maxim Integrated Products, MAX3084 Datasheet
MAX3084
Manufacturer Part Number
MAX3084
Description
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX3084.pdf
(20 pages)
Specifications of MAX3084
Case
SOP8
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*Pin-compatible with 75180, with additional features implemented using pins 1, 6, 8, and 13.
19-1138; Rev 1; 12/97
The MAX3080–MAX3089 high-speed transceivers for
RS-485/RS-422 communication 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 MAX3080/MAX3081/MAX3082 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
MAX3083/MAX3084/MAX3085 offer higher driver out-
put slew-rate limits, allowing transmit speeds up to
500kbps. The MAX3086/MAX3087/MAX3088’s driver
slew rates are not limited, making transmit speeds up
to 10Mbps possible. The MAX3089’s slew rate is
selectable between 115kbps, 500kbps, and 10Mbps
by driving a selector pin with a single three-state
driver.
These transceivers typically draw 375µA of supply
current when unloaded, or when fully loaded with the
drivers disabled.
All devices have a 1/8-unit-load receiver input imped-
ance that allows up to 256 transceivers on the bus. The
MAX3082/MAX3085/MAX3088 are intended for half-
duplex communications, while the MAX3080/MAX3081/
MAX3083/MAX3084/MAX3086/MAX3087 are intended
for full-duplex communications. The MAX3089 is selec-
table between half-duplex and full-duplex operation. It
also features independently programmable receiver
and transmitter output phase via separate pins.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX3080
MAX3081
MAX3082
MAX3083
MAX3084
MAX3085
MAX3086
MAX3087
MAX3088
MAX3089
Slew-Rate-Limited RS-485/RS-422 Transceivers
Part
Selectable
Half/Full
Duplex
Half
Half
Half
Full
Full
Full
Full
Full
Full
________________________________________________________________ Maxim Integrated Products
General Description
Selectable
(Mbps)
0.115
0.115
0.115
Data
Rate
0.5
0.5
0.5
10
10
10
Selectable
Limited
Slew
Rate
Fail-Safe, High-Speed (10Mbps),
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
Shutdown
Power
Low-
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
Receiver/
Enable
Ordering Information continued on last page.
Driver
MAX3080CPD
MAX3080CSD
MAX3080EPD
MAX3080ESD
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
True Fail-Safe Receiver While Maintaining
EIA/TIA-485 Compatibility
Enhanced Slew-Rate Limiting Facilitates
Error-Free Data Transmission
(MAX3080–MAX3085/MAX3089)
1nA Low-Current Shutdown Mode (except
MAX3081/MAX3084/MAX3087)
Pin-Selectable Full/Half-Duplex Operation
(MAX3089)
Phase Controls to Correct for Twisted-Pair
Reversal (MAX3089)
Allow Up to 256 Transceivers on the Bus
PART
RS-422/RS-485 Communications
Level Translators
Transceivers for EMI-Sensitive Applications
Industrial-Control Local Area Networks
Quiescent
Current
(µA)
375
375
375
375
375
375
375
375
375
375
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
Transceivers
0°C to +70°C
0°C to +70°C
Ordering Information
Bus
256
256
256
256
256
256
256
256
256
256
On
Selection Table
Count
Applications
Pin
14
14
14
14
8
8
8
8
8
8
14 Plastic DIP
14 SO
14 Plastic DIP
14 SO
PIN-PACKAGE
Features
Industry-
Standard
Pinout
75180*
75180
75179
75176
75180
75179
75176
75180
75179
75176
1