MAX487ECPA Maxim Integrated Products, MAX487ECPA Datasheet

IC TXRX RS485/RS422 LOWPWR 8DIP

MAX487ECPA

Manufacturer Part Number
MAX487ECPA
Description
IC TXRX RS485/RS422 LOWPWR 8DIP
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet

Specifications of MAX487ECPA

Number Of Drivers/receivers
1/1
Protocol
RS422, RS485
Voltage - Supply
4.75 V ~ 5.25 V
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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The MAX481E, MAX483E, MAX485E, MAX487E–
MAX491E, and MAX1487E are low-power transceivers for
RS-485 and RS-422 communications in harsh environ-
ments. Each driver output and receiver input is protected
against ±15kV electro-static discharge (ESD) shocks,
without latchup. These parts contain one driver and one
receiver. The MAX483E, MAX487E, MAX488E, and
MAX489E feature reduced slew-rate drivers that minimize
EMI and reduce reflections caused by improperly termi-
nated cables, thus allowing error-free data transmission
up to 250kbps. The driver slew rates of the MAX481E,
MAX485E, MAX490E, MAX491E, and MAX1487E are not
limited, allowing them to transmit up to 2.5Mbps.
These transceivers draw as little as 120µA supply cur-
rent when unloaded or when fully loaded with disabled
drivers (see Selector Guide). Additionally, the MAX481E,
MAX483E, and MAX487E have a low-current shutdown
mode in which they consume only 0.5µA. All parts oper-
ate from a single +5V supply.
Drivers are short-circuit current limited, and are protected
against excessive power dissipation by thermal shutdown
circuitry that places their outputs into a high-impedance
state. The receiver input has a fail-safe feature that guar-
antees a logic-high output if the input is open circuit.
The MAX487E and MAX1487E feature quarter-unit-load
receiver input impedance, allowing up to 128 trans-
ceivers on the bus. The MAX488E–MAX491E are
designed for full-duplex communications, while the
MAX481E, MAX483E, MAX485E, MAX487E, and
MAX1487E are designed for half-duplex applications.
For applications that are not ESD sensitive see the pin-
and function-compatible MAX481, MAX483, MAX485,
MAX487–MAX491, and MAX1487.
19-0410; Rev 4; 10/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Low-Power RS-485 Transceivers
Low-Power RS-422 Transceivers
Level Translators
Transceivers for EMI-Sensitive Applications
Industrial-Control Local Area Networks
±15kV ESD-Protected, Slew-Rate-Limited,
________________________________________________________________ Maxim Integrated Products
Low-Power, RS-485/RS-422 Transceivers
General Description
Applications
♦ For Fault-Tolerant Applications:
♦ For Space-Constrained Applications:
♦ For Multiple Transceiver Applications:
♦ For Fail-Safe Applications:
♦ For Low-Voltage Applications:
Ordering Information continued at end of data sheet.
Selector Guide appears at end of data sheet.
MAX481ECPA
MAX481ECSA
MAX481EEPA
MAX481EESA
MAX483ECPA
MAX483ECSA
MAX483EEPA
MAX483EESA
Next-Generation Device Features
MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4-
Unit Load, +3.3V, RS-485 Transceiver
MAX3080–MAX3089: Fail-Safe, High-Speed
(10Mbps), Slew-Rate-Limited, RS-485/RS-422
Transceivers
MAX3460–MAX3464: +5V, Fail-Safe, 20Mbps,
Profibus, RS-485/RS-422 Transceivers
MAX3362: +3.3V, High-Speed, RS-485/RS-422
Transceiver in a SOT23 Package
MAX3280E–MAX3284E: ±15kV ESD-Protected,
52Mbps, +3V to +5.5V, SOT23, RS-485/RS-422
True Fail-Safe Receivers
MAX3030E–MAX3033E: ±15kV ESD-Protected,
+3.3V, Quad RS-422 Transmitters
MAX3293/MAX3294/MAX3295: 20Mbps, +3.3V,
SOT23, RS-485/RS-422 Transmitters
MAX3440E–MAX3444E: ±15kV ESD-Protected,
±60V Fault-Protected, 10Mbps, Fail-Safe
RS-485/J1708 Transceivers
MAX3483E/MAX3485E/MAX3486E/MAX3488E/
MAX3490E/MAX3491E: +3.3V Powered, ±15kV
ESD-Protected, 12Mbps, Slew-Rate-Limited,
True RS-485/RS-422 Transceivers
PART
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
1

Related parts for MAX487ECPA

MAX487ECPA Summary of contents

Page 1

... Low-Power RS-485 Transceivers Low-Power RS-422 Transceivers Level Translators Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Next-Generation Device Features ♦ For Fault-Tolerant Applications: MAX3430: ± ...

Page 2

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers ABSOLUTE MAXIMUM RATINGS Supply Voltage (V ) .............................................................12V CC – — – Control Input Voltage ( DE)...................-0. Driver Input Voltage (DI).............................-0. Driver Output Voltage ( ...

Page 3

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers DC ELECTRICAL CHARACTERISTICS (continued ±5 unless otherwise noted.) (Notes MIN MAX PARAMETER SYMBOL No-Load Supply Current I CC (Note 3) Supply ...

Page 4

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers SWITCHING CHARACTERISTICS—MAX481E/MAX485E, MAX490E/MAX491E, MAX1487E ( ±5 unless otherwise noted.) (Notes MIN MAX PARAMETER SYMBOL Driver Enable from Shutdown to t ZH(SHDN) Output ...

Page 5

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers NOTES FOR ELECTRICAL/SWITCHING CHARACTERISTICS Note 1: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise specified. Note 2: All ...

Page 6

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers ____________________________Typical Operating Characteristics (continued 5V +25°C, unless otherwise noted DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs. TEMPERATURE 2 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 -60 ...

Page 7

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers ______________________________________________________________Pin Description PIN MAX481E/MAX483E MAX488E MAX485E/MAX487E MAX490E MAX1487E — 3 — — 5 — — — — — — — ...

Page 8

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers TOP VIEW GND DIP/SO Figure 1. MAX481E/MAX483E/MAX485E/MAX487E/MAX1487E Pin Configuration and Typical Operating Circuit TOP VIEW V ...

Page 9

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers __________Function Tables (MAX481E/MAX483E/MAX485E/MAX487E/MAX1487E) Table 1. Transmitting INPUTS High-Z X High Don't care High-Z = High impedance * Shutdown ...

Page 10

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers 1500 C D DISCHARGE CHARGE CURRENT LIMIT RESISTOR RESISTANCE HIGH C s STORAGE VOLTAGE 100pF CAPACITOR DC SOURCE Figure 4. Human Body ESD Test Model R 50M to 100M R 330 ...

Page 11

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers DIFF Figure 10. Driver/Receiver Timing Test Circuit PLH PHL 1/2 ...

Page 12

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers 10dB/div 0Hz 500kHz/div Figure 16. Driver Output Waveform and FFT Plot of MAX485E/MAX490E/MAX491E/MAX1487E Transmitting a 150kHz Signal The major difference between tests done using the Human Body Model and IEC1000-4-2 is higher peak current ...

Page 13

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers 100pF Z B TTL < 6ns 100pF Figure 18. Receiver Propagation Delay Test Circuit It takes the drivers and receivers longer to ...

Page 14

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers A 500mV/div B RO 5V/div 25ns/div Figure 19. MAX481E/MAX485E/MAX490E/MAX1487E Receiver t PHL A 500mV/div B RO 5V/div 200ns/div Figure 21. MAX483E/MAX487E–MAX489E Receiver s/div Figure 23. ...

Page 15

ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers 120 MAX481E MAX483E MAX485E MAX487E MAX1487E Figure 25. MAX481E/MAX483E/MAX485E/MAX487E/MAX1487E Typical Half-Duplex RS-485 Network A 120 120 ...

Page 16

... Low-Power, RS-485/RS-422 Transceivers PART TEMP RANGE MAX485ECPA 0°C to +70°C MAX485ECSA 0°C to +70°C MAX485EEPA -40°C to +85°C MAX485EESA -40°C to +85°C MAX487ECPA 0°C to +70°C MAX487ECSA 0°C to +70°C MAX487EEPA -40°C to +85°C MAX487EESA -40°C to +85°C MAX488ECPA 0°C to +70°C MAX488ECSA 0° ...

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