MAX1480ACPI

MAX1480ACPI Datasheet

MAX1480A/B/C/MAX1490A/B

Part	Datasheet
MAX1480ACPI	MAX1480ACPI (pdf)

PDF Datasheet Preview
MAX1480A/B/C/MAX1490A/B Complete, Isolated RS-485/RS-422 Data Interface The MAX1480A/MAX1480B/MAX1480C/MAX1490A/ MAX1490B are complete, electrically isolated, RS-485/ RS-422 data-communications interface solutions in a hybrid microcircuit. Transceivers, optocouplers, and a transformer provide a complete interface in a standard DIP package. A single +5V supply on the logic side powers both sides of the interface. The MAX1480B/MAX1480C/MAX1490B feature reducedslew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250kbps. The MAX1480A/MAX1490A driver slew rate is not limited, allowing transmission rates up to 2.5Mbps. The MAX1480A/B/C are designed for half-duplex communication, while the MAX1490A/B feature full-duplex communication. Drivers are short-circuit current limited and protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a highimpedance state. The receiver input has a fail-safe feature that guarantees a known output RO low for the MAX1480A/B/C, RO high for the MAX1490A/B if the input is open circuit. The MAX1480A/MAX1480B/MAX1480C/MAX1490A/ MAX1490B typically withstand 1600VRMS 1 minute or 2000VRMS 1 second . Their isolated outputs meet all RS-485/RS-422 specifications. The MAX1480A/B/C are available in a 28-pin DIP package, and the MAX1490A/B are available in a 24-pin DIP package. Isolated RS-485/RS-422 Data Interface Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks Automatic Test Equipment HVAC/Building Control Networks Next-Generation Device Features For Integrated ESD Protection MAX1480E/MAX1490E ±15kV ESD-Protected, Isolated RS-485/RS-422 Data Interfaces For Space-Constrained Applications MAX3157 High CMRR, RS-485 Transceiver with ±50V Isolation Ordering Information PART† TEMP RANGE PIN-PACKAGE MAX1480ACPI 0°C to +70°C 28 Wide Plastic DIP MAX1480AEPI -40°C to +85°C 28 Wide Plastic DIP Ordering Information continued at end of data sheet. †Data rate for “A” parts is up to 2.5Mbps. Data rate for “B” and “C” parts is up to 250kbps. Table PART MAX1480A MAX1480B MAX1480C MAX1490A MAX1490B HALF/ FULL DUPLEX Half Full DATA RATE MBPS SLEWRATE LIMITED No Yes No Yes DRIVER ENABLE TIME µs Pin Configurations TOP VIEW VCC1 1 VCC2 2 D1 3 D2 4 GND1 5 FS 6 SD 7 VCC3 8 DI 9 VCC4 10 RO 11 GND2 12 MAX845 MAX488 MAX490 24 AC1 MAX1490A/B 23 AC2 22 ISO VCC1 21 ISO RO DRV 20 A 19 B 18 Z 17 Y 16 ISO COM1 15 ISO DI DRV 14 ISO VCC2 13 ISO RO LED ISOLATION BARRIER DIP Pin Configurations continued at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at MAX1480A/B/C/MAX1490A/B Complete, Isolated RS-485/RS-422 Data Interface ABSOLUTE MAXIMUM RATINGS With Respect to GND_ Supply Voltage to +6V Control Input Voltage SD, FS ...............-0.3V to VCC_ + 0.3V Receiver Output Voltage RO, RO ........-0.3V to VCC_ + 0.3V Output Switch Voltage D1, With Respect to ISO COM_ Control Input Voltage ISO DE_ ....-0.3V to ISO VCC_ + 0.3V Driver Input Voltage ISO DI_ .......-0.3V to ISO VCC_ + 0.3V Receiver Output Voltage ISO RO_ ...-0.3V to ISO VCC_ + 0.3V Driver Output Voltage A, B, Y, Z ......................-8V to +12.5V Receiver Input Voltage A, B ..............................-8V to +12.5V LED Forward Current DI, DE, ISO RO LED ......................50mA Continuous Power Dissipation TA = +70°C 24-Pin Plastic DIP derate 8.7mW°C above +70°C .....696mW 28-Pin Plastic DIP derate 9.09mW/°C above +70°C ..727mW Operating Temperature Ranges MAX1480_CPI/MAX1490_CPG ............................0°C to +70°C MAX1480_EPI/MAX1490_EPG .........................-40°C to +85°C Storage Temperature Range .............................-65°C to +160°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. ELECTRICAL CHARACTERISTICS VCC_ = 5V ±10%, VFS = VCC_, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC_ = 5V and TA = +25°C. Notes 1, 2 PARAMETER Switch Frequency Operating Supply Current Shutdown Supply Current Note 3 CONDITIONS fSWL VFS = 0V fSWH ICC FS = VCC_ or open MAX1480A, = VCC_ or open MAX1480B, = VCC_ or open MAX1480C, = VCC_ or open MAX1490A RL = ∞, +25°C only RL = 54Ω RL = ∞, +25°C only RL = 54Ω RL = ∞, +25°C only RL = 54Ω RL = ∞, +25°C only RL = 54Ω MAX1490B RL = ∞, +25°C only RL = 54Ω ISHDN SD = VCC_ TYP MAX UNITS 535 kHz 100 150 Shutdown Input Threshold Shutdown Input Leakage Current FS Input Threshold FS Input Pullup Current FS Input Leakage Current Input High Voltage Input Low Voltage Isolation Resistance Isolation Capacitance Differential Driver Output No Load VSDH VSDL High Low VFSH VFSL VIH VIL RISO CISO VOD1 High Low FS low FS high TA = +25°C, VISO = 50VDC TA = +25°C, VISO = 50VDC VCC_ - 100 10,000 Complete, Isolated RS-485/RS-422 Data Interface Ordering Information continued PART† TEMP RANGE PIN-PACKAGE MAX1480BCPI 0°C to +70°C 28 Wide Plastic DIP MAX1480BEPI -40°C to +85°C 28 Wide Plastic DIP MAX1480CCPI 0°C to +70°C 28 Wide Plastic DIP MAX1480CEPI -40°C to +85°C 28 Wide Plastic DIP MAX1490ACPG 0°C to +70°C 24 Wide Plastic DIP MAX1490AEPG -40°C to +85°C 24 Wide Plastic DIP MAX1490BCPG 0°C to +70°C 24 Wide Plastic DIP MAX1490BEPG -40°C to +85°C 24 Wide Plastic DIP †Data rate for “A” parts is up to 2.5Mbps. Data rate for “B” and “C” parts is up to 250kbps. Package Information For the latest package outline information and land patterns, go to Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE DOCUMENT NO. 28 PDIP P28M-1 21-0044 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 21 2005 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.

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MAX1480A/B/C/MAX1490A/B

Complete, Isolated RS-485/RS-422 Data Interface

The MAX1480A/MAX1480B/MAX1480C/MAX1490A/ MAX1490B are complete, electrically isolated, RS-485/ RS-422 data-communications interface solutions in a hybrid microcircuit. Transceivers, optocouplers, and a transformer provide a complete interface in a standard DIP package. A single +5V supply on the logic side powers both sides of the interface.

The MAX1480B/MAX1480C/MAX1490B feature reducedslew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250kbps. The MAX1480A/MAX1490A driver slew rate is not limited, allowing transmission rates up to 2.5Mbps. The MAX1480A/B/C are designed for half-duplex communication, while the MAX1490A/B feature full-duplex communication.

Drivers are short-circuit current limited and protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a highimpedance state. The receiver input has a fail-safe feature that guarantees a known output RO low for the MAX1480A/B/C, RO high for the MAX1490A/B if the input is open circuit.

The MAX1480A/MAX1480B/MAX1480C/MAX1490A/ MAX1490B typically withstand 1600VRMS 1 minute or 2000VRMS 1 second . Their isolated outputs meet all RS-485/RS-422 specifications. The MAX1480A/B/C are available in a 28-pin DIP package, and the MAX1490A/B are available in a 24-pin DIP package.

Isolated RS-485/RS-422 Data Interface

Transceivers for EMI-Sensitive Applications

Industrial-Control Local Area Networks

Automatic Test Equipment

HVAC/Building Control Networks

Next-Generation Device Features

For Integrated ESD Protection MAX1480E/MAX1490E ±15kV ESD-Protected, Isolated RS-485/RS-422 Data Interfaces

For Space-Constrained Applications MAX3157 High CMRR, RS-485 Transceiver with ±50V Isolation
Ordering Information

PART†

TEMP RANGE

PIN-PACKAGE

MAX1480ACPI
0°C to +70°C
28 Wide Plastic DIP

MAX1480AEPI -40°C to +85°C
28 Wide Plastic DIP
Ordering Information continued at end of data sheet.
†Data rate for “A” parts is up to 2.5Mbps. Data rate for “B” and “C” parts is up to 250kbps.

Table

PART

MAX1480A MAX1480B MAX1480C MAX1490A MAX1490B

HALF/ FULL DUPLEX

Half Full

DATA RATE MBPS

SLEWRATE LIMITED

No Yes No Yes

DRIVER ENABLE

TIME µs

Pin Configurations

TOP VIEW

VCC1 1 VCC2 2

D1 3 D2 4 GND1 5 FS 6 SD 7 VCC3 8 DI 9 VCC4 10 RO 11 GND2 12

MAX845 MAX488 MAX490
24 AC1 MAX1490A/B
23 AC2 22 ISO VCC1 21 ISO RO DRV 20 A 19 B 18 Z 17 Y 16 ISO COM1 15 ISO DI DRV 14 ISO VCC2 13 ISO RO LED

ISOLATION BARRIER

DIP Pin Configurations continued at end of data sheet.

Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at

MAX1480A/B/C/MAX1490A/B

Complete, Isolated RS-485/RS-422 Data Interface

ABSOLUTE MAXIMUM RATINGS

With Respect to GND_

Supply Voltage to +6V Control Input Voltage SD, FS ...............-0.3V to VCC_ + 0.3V Receiver Output Voltage RO, RO ........-0.3V to VCC_ + 0.3V Output Switch Voltage D1,

With Respect to ISO COM_

Control Input Voltage ISO DE_ ....-0.3V to ISO VCC_ + 0.3V Driver Input Voltage ISO DI_ .......-0.3V to ISO VCC_ + 0.3V Receiver Output Voltage ISO RO_ ...-0.3V to ISO VCC_ + 0.3V Driver Output Voltage A, B, Y, Z ......................-8V to +12.5V

Receiver Input Voltage A, B ..............................-8V to +12.5V

LED Forward Current DI, DE, ISO RO LED ......................50mA Continuous Power Dissipation TA = +70°C
24-Pin Plastic DIP derate 8.7mW°C above +70°C .....696mW 28-Pin Plastic DIP derate 9.09mW/°C above +70°C ..727mW Operating Temperature Ranges MAX1480_CPI/MAX1490_CPG ............................0°C to +70°C MAX1480_EPI/MAX1490_EPG .........................-40°C to +85°C Storage Temperature Range .............................-65°C to +160°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.

ELECTRICAL CHARACTERISTICS

VCC_ = 5V ±10%, VFS = VCC_, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC_ = 5V and TA = +25°C. Notes 1, 2

PARAMETER Switch Frequency

Operating Supply Current

Shutdown Supply Current Note 3

CONDITIONS
fSWL VFS = 0V
fSWH ICC

FS = VCC_ or open MAX1480A, = VCC_ or open MAX1480B, = VCC_ or open MAX1480C, = VCC_ or open

MAX1490A

RL = ∞, +25°C only RL = 54Ω RL = ∞, +25°C only RL = 54Ω RL = ∞, +25°C only RL = 54Ω RL = ∞, +25°C only RL = 54Ω

MAX1490B

RL = ∞, +25°C only RL = 54Ω

ISHDN SD = VCC_

TYP MAX UNITS
535 kHz
100 150

Shutdown Input Threshold

Shutdown Input Leakage Current

FS Input Threshold

FS Input Pullup Current FS Input Leakage Current Input High Voltage Input Low Voltage Isolation Resistance Isolation Capacitance Differential Driver Output No Load

VSDH VSDL

High Low

VFSH VFSL

VIH VIL RISO CISO VOD1

High Low FS low FS high TA = +25°C, VISO = 50VDC TA = +25°C, VISO = 50VDC

VCC_ -
100 10,000

Complete, Isolated RS-485/RS-422 Data Interface
Ordering Information continued

PART†

TEMP RANGE

PIN-PACKAGE

MAX1480BCPI
0°C to +70°C
28 Wide Plastic DIP

MAX1480BEPI -40°C to +85°C
28 Wide Plastic DIP

MAX1480CCPI
0°C to +70°C
28 Wide Plastic DIP

MAX1480CEPI -40°C to +85°C
28 Wide Plastic DIP

MAX1490ACPG 0°C to +70°C
24 Wide Plastic DIP

MAX1490AEPG -40°C to +85°C
24 Wide Plastic DIP

MAX1490BCPG 0°C to +70°C
24 Wide Plastic DIP

MAX1490BEPG -40°C to +85°C
24 Wide Plastic DIP
†Data rate for “A” parts is up to 2.5Mbps. Data rate for “B” and “C” parts is up to 250kbps.

Package Information

For the latest package outline information and land patterns, go to Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.

PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
28 PDIP

P28M-1
21-0044

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 21
2005 Maxim Integrated Products

Maxim is a registered trademark of Maxim Integrated Products, Inc.

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MAX1480ACPI Datasheet file may be downloaded here without warranties.

Datasheet ID: MAX1480ACPI 647231