MAX3462 MAXIM [Maxim Integrated Products], MAX3462 Datasheet

no-image

MAX3462

Manufacturer Part Number
MAX3462
Description
+5V, Fail-Safe, 20Mbps, Profibus RS-485/ RS-422 Transceivers
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX3462CSA
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX3462CSA+T
Manufacturer:
ROHM
Quantity:
12 000
Part Number:
MAX3462ESA
Manufacturer:
MAXIM/美信
Quantity:
20 000
The MAX3460–MAX3464 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 output level with a 54Ω load, 20Mbps data
rate, and output skew less than 2ns. Each part contains
one three-state differential line driver and one differen-
tial input line receiver. The devices operate from a +5V
supply and feature true fail-safe circuitry, which guaran-
tees 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.
19-2217; Rev 1; 2/03
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.
MAX3460
MAX3461
MAX3462
MAX3463
MAX3464
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, 20Mbps, 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
o Recommended for Profibus Applications
o Guaranteed 20Mbps Data Rate
o 20ns Transmitter and Receiver Propagation Delay
o 2ns Transmitter and Receiver Skew
o High Differential Driver Output Level (2.1V on 54Ω)
o Hot-Swap Versions
o 1µA Shutdown Supply Current
o Low Supply Current Requirements (2.5mA typ)
o Allow Up to 128 Transceivers on the Bus
o True Fail-Safe Receiver while Maintaining EIA/TIA-
o Designed for Multipoint Transmissions on Long
o Full Duplex and Half Duplex Versions Available
o Phase Controls to Correct for Twisted-Pair
o Current-Limiting and Thermal Shutdown for
No
Ordering Information continued at end of data sheet.
Pin Configurations appear at end of data sheet.
No
No
MAX3460CSD
MAX3460CPD
MAX3460ESD
MAX3460EPD
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 MAX3462

MAX3462 Summary of contents

Page 1

... PART HALF/FULL DRIVER NUMBER DUPLEX ENABLE MAX3460 Full Yes MAX3461 Full Yes MAX3462 Full No MAX3463 Half Yes MAX3464 Half Yes ________________________________________________________________ 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. ...

Page 2

Fail-Safe, 20Mbps, 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, 20Mbps, Profibus RS-485/ ELECTRICAL CHARACTERISTICS (continued +5V ±5 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL Receiver Input Hysteresis Receiver Output High Voltage Receiver ...

Page 4

Fail-Safe, 20Mbps, Profibus RS-485/ RS-422 Transceivers ELECTRICAL CHARACTERISTICS (continued +5V ±5 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL Time to Shutdown t Driver Enable ...

Page 5

Fail-Safe, 20Mbps, Profibus RS-485 +5V +25°C, unless otherwise noted SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE -40 - TEMPERATURE (°C) RECEIVER PROPAGATION DELAY vs. TEMPERATURE 11 ...

Page 6

... Fail-Safe, 20Mbps, Profibus RS-485/ RS-422 Transceivers (V = +5V +25°C, unless otherwise noted DRIVER AND RECEIVER PROPAGATION DELAYS MAX3460-64 toc13 10ns/div PIN MAX3460/ MAX3463/ MAX3462 MAX3461 MAX3464 HALF FULL DUPLEX DUPLEX 1 — — — — ...

Page 7

... RECEIVING INPUTS RE DE A–B ≥ -0.05V 0 X ≤ -0. Open/Shorted _______________________________________________________________________________________ RS-422 Transceivers MAX3462 OUTPUTS INPUT High-Z High-Z Shutdown Shutdown INPUTS ≥ -0.05V OUTPUT ≤ -0.2V SHDN RO Open/Shorted MAX3463/MAX3464 0 High-Z ...

Page 8

... Figure 1. MAX3460/MAX3461 Pin Configuration and Typical Full-Duplex Operating Circuit TOP VIEW GND Y DIP/SO Figure 2. MAX3462 Pin Configuration and Typical Full-Duplex Operating Circuit TOP VIEW GND DI DIP/SO NOTE: PIN LABELS Y AND Z ON TIMING, TEST, AND WAVEFORM DIAGRAMS REFER TO PINS A AND B WHEN DE IS HIGH ...

Page 9

... The MAX3460–MAX3464’s driver slew rates allow transmit speeds up to 20Mbps. The MAX3463 and MAX3464 are half-duplex trans- ceivers, while the MAX3460, MAX3461, and MAX3462 are full-duplex transceivers. All of these parts operate from a single +5V supply. Drivers are output short-cir- cuit current limited ...

Page 10

Fail-Safe, 20Mbps, Profibus RS-485 Figure 5. Driver DC Test Load DIFF Figure 6. Driver Timing Test Circuit ≤ 3ns, t ≤ 3ns ƒ = 1MHz, ...

Page 11

... RS-485 transceivers with a total of 32 unit loads or less can be connected to the line. Low-Power Shutdown Mode (except MAX3462) Low-power shutdown mode is initiated by bringing SHDN high (MAX3460/MAX3461), or both RE high and DE low. In shutdown, the devices typically draw only 1µA of supply current. RE and DE can be driven simul- taneously ...

Page 12

... MAX3463 MAX3464 (HALF-DUPLEX) Figure 13. Typical Half-Duplex RS-485 Network A 120Ω 120Ω NOTE: RE AND DE ON MAX3460/MAX3461/MAX3462 ONLY Figure 14. Typical Full-Duplex RS-485 Network 12 ______________________________________________________________________________________ ...

Page 13

Fail-Safe, 20Mbps, Profibus RS-485/ (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages TOP VIEW FRONT VIEW ______________________________________________________________________________________ RS-422 ...

Page 14

Fail-Safe, 20Mbps, Profibus RS-485/ RS-422 Transceivers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other ...

Related keywords