MAX3488AE Transceivers Datasheet

MAX3488AE Datasheet, PDF, Equivalent


Part Number

MAX3488AE

Description

20Mbps and Slew-Rate-Limited RS-485/RS-422 Transceivers

Manufacture

Maxim Integrated

Total Page 19 Pages
Datasheet
Download MAX3488AE Datasheet


MAX3488AE
MAX3483AE/MAX3485AE/
MAX3488AE/MAX3490AE/
MAX3491AE
+3.3V-Powered, ±20kV ESD-Protected,
20Mbps and Slew-Rate-Limited
RS-485/RS-422 Transceivers
General Description
Devices in the MAX3483AE family (MAX3483AE/
MAX3485AE/MAX3488AE/MAX3490AE/MAX3491AE)
are ±20kV ESD-protected RS-485/422 transceivers,
optimized for extended cable runs in noisy environments.
All devices operate from a single 3.3V supply.
The MAX3483AE and MAX3485AE are half-duplex transceivers.
The MAX3488AE, MAX3490AE, and MAX3491AE are
full-duplex transceivers. The MAX3483AE/85AE have a
1-unit load receiver input impedance, allowing up to 32
transceivers on the bus. The MAX3488AE/90AE/91AE
have a 1/4-unit load receiver input impedance, allowing up
to 128 transceivers on the bus. Each transceiver includes
a fail-safe receiver, ensuring that the receiver output (RO)
is high when inputs are shorted, open, or connected to a
three-state bus.
All devices feature enhanced electrostatic discharge (ESD)
protection. All transmitter outputs and receiver inputs are
protected to ±20kV HBM ESD, ±15kV Air-Gap ESD and
±8kV Contact ESD in accordance to IEC 61000-4-2.
The MAX3483AE, MAX3485AE, MAX3488AE, and
MAX3490AE are available in industry standard 8-pin SO
package, while the MAX3491AE is available in a 14-pin
SO package.
Functional Diagram
Benefits and Features
● Integrated Protection Increases Robustness
• High ESD Protection
±20kV HBM ESD per JEDEC JS-001-2012
±15kV Air Gap per IEC 61000-4-2
±8kV Contact ESD per IEC 61000-4-2
• Short-Circuit Protected Outputs
• True Fail-Safe Receiver Prevents False Transition
on Receiver Input Short or Open Events
• Hot-Swap Capability Eliminates False Transitions
During Power-Up or Hot Insertion
● High-Speed Data Rates up to 20Mbps
● Up to -40°C to +125°C Operating Temperature
● Allows Up to 128 Transceivers on the Bus
Applications
● Industrial-Control Local Area Networks
● Transceivers for EMI-Sensitive Applications
● Telecommuncations
Ordering Information appears at end of data sheet.
19-8506; Rev 1; 9/17

MAX3488AE
MAX3483AE/MAX3485AE/
MAX3488AE/MAX3490AE/
MAX3491AE
+3.3V-Powered, ±20kV ESD-Protected,
20Mbps and Slew-Rate-Limited
RS-485/RS-422 Transceivers
Absolute Maximum Ratings
(Voltages referenced to GND.)
VCC ......................................................................-0.3V to +4.0V
RO............................................................. -0.3V to (VCC + 0.3V)
RE, DE, DI.............................................................-0.3V to +4.0V
A, B, Y, Z.............................................................-9.0V to +13.0V
Short-Circuit Duration (RO, A, B, Y, Z) to GND..........Continuous
Operating Temperature Range
MAX3483AE/85AE/88AE/90AE/91AE........... -40°C to +125°C
MAX3488AE/90AE........................................ -40°C to +105°C
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -65°C to +150°C
Continuous Power Dissipation (TA = +70°C)
8 SO (derate at 7.6mW/°C above +70°C)....................606mW
14 SO (derate at 11.9mW/°C above +70°C)................952mW
Lead Temperature (soldering, 10s).................................. +300°C
Soldering Temperature (reflow)....................................... +260°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.
Package Thermal Characteristics (Note 1)
Junction-to-Case Thermal Resistance (θJC)
8-pin SO.......................................................................38°C/W
14-pin SO.....................................................................34°C/W
Junction-to-Ambient Thermal Resistance (θJA)
8-pin SO.....................................................................132°C/W
14-pin SO.....................................................................84°C/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
(VCC = +3.0V to +3.6V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at VCC = +3.3V and TA = +25°C.) (Notes 2, 3)
PARAMETER
POWER SUPPLY
Supply Voltage
Supply Current
Shutdown Supply Current
DRIVER
Differential Driver Output
Change in Magnitude of Differential
Output Voltage
SYMBOL
VCC
ICC
ISHDN
VOD
∆VOD
CONDITIONS
DE = VCC, RE = GND, no load
DE = 0, RE = 0, no load, DI = 0 or VCC
DE = GND, RE = VCC, MAX3483AE/85AE/91AE
VCC = 3V, RL = 100Ω, Figure 1
VCC = 3V, RL = 54Ω, Figure 1
RL = 54Ω or 100Ω, Figure 1 (Note 4)
MIN
3.0
1.2
2.0
1.5
-0.2
TYP MAX UNITS
3.6 V
1.9 4
mA
4.0
10 µA
+0.2
V
V
Driver Common-Mode Output Voltage
Change in Magnitude of Common-
Mode Voltage
VOC
ΔVOC
RL = 54Ω or 100Ω, Figure 1
RL = 54Ω or 100Ω, Figure 1 (Note 4)
VCC/2
3
-0.2 +0.2
V
V
Single-Ended Driver Output High
Single-Ended Driver Output Low
Driver Short-Circuit Output Current
VOH
VOL
IOSD
A or B output, IA or B = -20mA
A or B output, IA or B = 20mA
VOUT = -7V
VOUT = +12V
2.2
-250
V
0.8 V
mA
250 mA
www.maximintegrated.com
Maxim Integrated 2


Features MAX3483AE/MAX3485AE/ MAX3488AE/MAX3490AE / MAX3491AE +3.3V-Powered, ±20kV ESD- Protected, 20Mbps and Slew-Rate-Limited RS-485/RS-422 Transceivers General De scription Devices in the MAX3483AE fami ly (MAX3483AE/ MAX3485AE/MAX3488AE/MAX3 490AE/MAX3491AE) are ±20kV ESD-protect ed RS-485/422 transceivers, optimized f or extended cable runs in noisy environ ments. All devices operate from a singl e 3.3V supply. The MAX3483AE and MAX348 5AE are half-duplex transceivers. The M AX3488AE, MAX3490AE, and MAX3491AE are full-duplex transceivers. The MAX3483AE /85AE have a 1-unit load receiver input impedance, allowing up to 32 transceiv ers on the bus. The MAX3488AE/90AE/91AE have a 1/4-unit load receiver input im pedance, allowing up to 128 transceiver s on the bus. Each transceiver includes a fail-safe receiver, ensuring that th e receiver output (RO) is high when inp uts are shorted, open, or connected to a three-state bus. All devices feature enhanced electrostatic discharge (ESD) protection. All transmit.
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