MAX3466CSD+ Maxim Integrated Products, MAX3466CSD+ Datasheet

IC TXRX RS485/422 14-SOIC

MAX3466CSD+

Manufacturer Part Number
MAX3466CSD+
Description
IC TXRX RS485/422 14-SOIC
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet

Specifications of MAX3466CSD+

Number Of Drivers/receivers
1/1
Protocol
RS422, RS485
Voltage - Supply
4.75 V ~ 5.25 V
Mounting Type
Surface Mount
Package / Case
14-SOIC (3.9mm Width), 14-SOL
Data Rate
40 Mbps
Propagation Delay Time Ns
15 ns, 20 ns
Operating Supply Voltage
5 V
Supply Current
2.5 mA
Operating Temperature Range
0 C to + 70 C
Input Voltage
0.8 V to 2 V
Maximum Power Dissipation
667 mW
Mounting Style
SMD/SMT
Output Current
125 uA
Output Voltage
3 V
Product
RS-422/RS-485 Combination
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3465–MAX3469 are high-speed differential
bus transceivers for RS-485 and RS-422 communica-
tions. They are designed to meet TIA/EIA-422-B,
TIA/EIA-485-A, V.11, and X.27 standards. The trans-
ceiver complies with the Profibus specification provid-
ing +2.1V minimum output level with a 54Ω load,
40Mbps data rate, and output skew less than 2ns. Each
part contains one three-state differential line driver and
one differential input line receiver. The devices operate
from a +5V supply and feature true fail-safe circuitry,
which guarantees a logic-high receiver output when the
receiver inputs are open or shorted. This enables all
receiver outputs on a terminated bus to output logic
highs when all transmitters are disabled.
All devices feature a 1/4-standard-unit load receiver
input impedance that allows 128 transceivers on the
bus. Driver and receiver propagation delays are guar-
anteed under 20ns for multidrop, clock distribution
applications. Drivers are short-circuit current limited
and are protected against excessive power dissipation
by thermal-shutdown circuitry. The driver and receiver
feature active-high and active-low enables, respective-
ly, that can be connected together externally to serve
as a direction control.
19-3038; Rev 2; 8/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX3465
MAX3466
MAX3467
MAX3468
MAX3469
NUMBER
PART
High-Speed RS-485 Communications
High-Speed RS-422 Communications
Level Translators
Industrial-Control Local Area Networks
Profibus Applications
HALF/FULL
DUPLEX
________________________________________________________________ Maxim Integrated Products
+5V, Fail-Safe, 40Mbps, Profibus RS-485/
Half
Half
Full
Full
Full
General Description
RECEIVER/
ENABLE
DRIVER
Yes
Yes
Yes
Yes
No
Applications
SHUTDOWN
POWER
LOW-
Yes
Yes
Yes
Yes
No
HOT SWAP
Yes
Yes
♦ Recommended for Profibus Applications
♦ Up to 40Mbps Data Rate
♦ 15ns Transmitter Propagation Delay
♦ 20ns Receiver Propagation Delay
♦ 2ns Transmitter and Receiver Skew
♦ High Differential Driver Output Level (2.1V on 54Ω)
♦ Hot-Swap Versions
♦ 1µA Shutdown Supply Current
♦ Low Supply Current Requirements (2.5mA, typ)
♦ Allow Up to 128 Transceivers on the Bus
♦ True Fail-Safe Receiver while Maintaining EIA/TIA-
♦ Designed for Multipoint Transmissions on Long
♦ Full-Duplex and Half-Duplex Versions Available
♦ Phase Controls to Correct for Twisted-Pair
♦ Current-Limiting and Thermal Shutdown for
No
No
No
Ordering Information continued at end of data sheet.
Pin Configurations appear at end of data sheet.
MAX3465CSD
MAX3465CPD
MAX3465ESD
MAX3465EPD
485 Compatibility
or Noisy Bus Lines
Reversal for 14-Pin Versions
Driver Overload Protection
RS-422 Transceivers
PART
DRIVER PHASE
RECEIVER/
SELECT
Yes
Yes
No
No
No
-40°C to +85°C
-40°C to +85°C
Ordering Information
TEMP RANGE
0°C to +70°C
0°C to +70°C
INDEPENDENT
SHDN PIN
Selector Guide
Yes
Yes
No
No
No
PIN-PACKAGE
14 SO
14 Plastic DIP
14 SO
14 Plastic DIP
Features
PIN COUNT
14
14
8
8
8
1

Related parts for MAX3466CSD+

MAX3466CSD+ Summary of contents

Page 1

... MAX3468 Half Yes MAX3469 Half Yes ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. RS-422 Transceivers ♦ Recommended for Profibus Applications ♦ 40Mbps Data Rate ♦ 15ns Transmitter Propagation Delay ♦ ...

Page 2

Fail-Safe, 40Mbps, Profibus RS-485/ RS-422 Transceivers ABSOLUTE MAXIMUM RATINGS Supply Voltage ( GND ..................................-0.3V to +6V CC Control Input Voltage (RE, DE, DI, SHDN, TXP, RXP) to GND....................................................-0. Driver Output Voltage ( GND ...

Page 3

Fail-Safe, 40Mbps, Profibus RS-485/ ELECTRICAL CHARACTERISTICS (continued +5V ±5 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL Receiver Differential Threshold Voltage Receiver Input Hysteresis Receiver ...

Page 4

Fail-Safe, 40Mbps, Profibus RS-485/ RS-422 Transceivers ELECTRICAL CHARACTERISTICS (continued +5V ±5 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL Recei ver O utp ut S ...

Page 5

Fail-Safe, 40Mbps, Profibus RS-485 +5V +25°C, unless otherwise noted SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE 300 250 200 150 100 50 0 -40 - TEMPERATURE (°C) RECEIVER PROPAGATION DELAY vs. ...

Page 6

Fail-Safe, 40Mbps, Profibus RS-485/ RS-422 Transceivers (V = +5V +25°C, unless otherwise noted DRIVER AND RECEIVER PROPAGATION DELAYS MAX3465 toc13 DI 5V/div Y, Z 2V/div RO 5V/div R = 54Ω DATA RATE = 20Mbps DIFF ...

Page 7

Fail-Safe, 40Mbps, Profibus RS-485/ MAX3465/MAX3466 TRANSMITTING INPUTS SHDN RECEIVING INPUTS ≥ ...

Page 8

Fail-Safe, 40Mbps, Profibus RS-485/ RS-422 Transceivers TOP VIEW SHDN RXP GND GND 7 8 TXP DIP/SO ...

Page 9

Fail-Safe, 40Mbps, Profibus RS-485/ Detailed Description The MAX3465–MAX3469 high-speed transceivers for RS-485/RS-422 communication contain one driver and one receiver. These devices feature true fail-safe cir- cuitry, which guarantees a logic-high receiver output when the receiver inputs are open or ...

Page 10

Fail-Safe, 40Mbps, Profibus RS-485/ RS-422 Transceivers Figure 5. Driver DC Test Load DIFF Figure 6. Driver Timing Test Circuit ≤ 3ns, t ≤ 3ns f ...

Page 11

Fail-Safe, 40Mbps, Profibus RS-485/ ATE V ID Figure 12. Receiver Propagation Delay Test Circuit Applications Information 128 Transceivers on the Bus The standard RS-485 receiver input impedance is 12kΩ (one unit load), and the standard driver can drive up ...

Page 12

Fail-Safe, 40Mbps, Profibus RS-485/ RS-422 Transceivers 120Ω MAX3468 MAX3469 (HALF-DUPLEX) Figure 13. Typical Half-Duplex RS-485 Network A 120Ω 120Ω ...

Page 13

... 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 ____________________ 13 © 2009 Maxim Integrated Products ...

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