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EVALUATION KIT AVAILABLE
AVAILABLE
MAX3080–MAX3089
Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
General Description
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 reflections caused by improperly terminated cables, allowing error-free data transmission up to 115kbps. The MAX3083/MAX3084/MAX3085 offer higher driver output 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 impedance that allows up to 256 transceivers on the bus. The MAX3082/MAX3085/MAX3088 are intended for halfduplex communications, while the MAX3080/MAX3081/ MAX3083/MAX3084/MAX3086/MAX3087 are intended for full-duplex communications. The MAX3089 is selectable between half-duplex and full-duplex operation. It also features independently programmable receiver
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Next Generation Device Features
♦ For Fault-Tolerant Applications: MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4Unit Load, +3.3V RS-485 Transceiver
♦ For Low-Voltage Applications: MAX3362: +3.3V, High-Speed, RS-485/RS-422 Transceiver in a SOT23 Package
♦ For Multiple Transceiver Applications: MAX3030E–MAX3033E: ±15kV ESD-Protected, +3.3V, Quad, RS-422 Transmitters MAX3040–MAX3045: ±10kV ESD-Protected, Quad, +5V, RS-485/RS-422 Transmitters
Applications
RS-422/RS-485 Communications Level Translators Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks
Ordering Information
PART MAX3080CSD MAX3080CPD MAX3080ESD MAX3080EPD
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.
Selection Table
Part
Half/Full Duplex
Data Rate (Mbps)
Slew Rate Limited
LowPower Shutdown
Receiver/ Driver Enable
Quiescent Transceivers
Current
On
(µA)
Bus
MAX3080
Full
0.115
Yes
Yes
Yes
375
MAX3081
Full
0.115
Yes
No
No
375
MAX3082
Half
0.115
Yes
Yes
Yes
375
MAX3083
Full
0.5
Yes Yes Yes 375
MAX3084
Full
0.5 Yes No
No
375
MAX3085
Half
0.5
Yes Yes Yes 375
MAX3086
Full
10
No Yes Yes 375
MAX3087
Full
10
No
No
No 375
MAX3088
Half
10
No Yes Yes 375
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Yes
Yes
375
*FPuinn-cctoiomnpaaltDibilaegwraithm7s5c1o80n,tiwniutheaddadtiteionndalofef adtautraessihmepelte.mented using pins 1, 6, 8, and 13.
UCSP is a trademark of Maxim Integrated Products, Inc.
256 256 256 256 256 256 256 256 256 256
Pin Count
14 8 8 14 8 8 14 8 8 14
IndustryStandard
Pinout
75180 75179 75176 75180 75179 75176 75180 75179 75176 75180*
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-1138; Rev 3; 12/05
MAX3080–MAX3089
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_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
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