MAX3292ESD+ Maxim Integrated Products, MAX3292ESD+ Datasheet

IC TXRX RS485/422 10MBPS 14-SOIC

MAX3292ESD+

Manufacturer Part Number
MAX3292ESD+
Description
IC TXRX RS485/422 10MBPS 14-SOIC
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet

Specifications of MAX3292ESD+

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
Operating Supply Voltage
5 V
Mounting Style
SMD/SMT
Product
RS-422/RS-485 Combination
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3291/MAX3292 high-speed RS-485/RS-422
transceivers feature driver preemphasis circuitry, which
extends the distance and increases the data rate of reli-
able communication by reducing intersymbol interfer-
ence (ISI) caused by long cables. The MAX3291 is
programmable for data rates of 5Mbps to 10Mbps,
while the MAX3292 is programmable for data rates up
to 10Mbps by using a single external resistor.
The MAX3291/MAX3292 are full-duplex devices that
operate from a single +5V supply and offer a low-cur-
rent shutdown mode that reduces supply current to
100nA. They feature driver output short-circuit current
limiting and a fail-safe receiver input that guarantees a
logic-high output if the input is open circuit. A 1/4-unit-
load receiver input impedance allows up to 128 trans-
ceivers on the bus.
________________________Applications
19-1405; Rev 1; 4/99
________________General Description
Pin Configuration appears at end of data sheet.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Long-Distance, High-Speed RS-485/RS-422
Communications
Telecommunications
Industrial-Control Local Area Networks
for High-Speed, Long-Distance Communication
RS-485/RS-422 Transceivers with Preemphasis
RO
RE
DE
DI
(PSET)
________________________________________________________________ Maxim Integrated Products
PEE
2
3
4
5
1
R
C
7(6)
MAX3291
MAX3292
PSET
PSET
V
*
*
CC
GND
(V
14
CCD
A
B
Y
Z
)
13
12
11
10
9
1 F
Typical Operating Circuit and Functional Diagram
R = Z
R = Z
O
O
R = Z
R = Z
____________________________Features
_______________Ordering Information
MAX3291CSD
MAX3291CPD
MAX3291ESD
MAX3291EPD
MAX3292CSD
MAX3292CPD
MAX3292ESD
MAX3292EPD
O
O
Preemphasis Increases the Distance and Data
Rate of Reliable RS-485/RS-422 Communication
Data Rate
100nA Low-Current Shutdown Mode
Allow Up to 128 Transceivers on the Bus
-7V to +12V Common-Mode Input Voltage Range
Pin-Compatible with ’75180, MAX489, MAX491
MAX3080, MAX3083, MAX3086, MAX1482
(PSET)
Optimized for 5Mbps to 10Mbps (MAX3291)
Programmable up to 10Mbps (MAX3292)
10
11
12
PART
PEE
9
Y
Z
B
A
1
C
7(6)
R
MAX3291
MAX3292
PSET
PSET
V
*
*
CC
GND
(V
14
CCD
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
)
13
5
4
3
2
1 F
DE
RE
RO
DI
( ) ARE FOR MAX3292
Z
* MAX3292 ONLY
O
= THE CHARACTERISTIC
IMPEDANCE OF THE CABLE
14 SO
14 Plastic DIP
14 SO
14 Plastic DIP
14 SO
14 Plastic DIP
14 SO
14 Plastic DIP
PIN-PACKAGE
1

Related parts for MAX3292ESD+

MAX3292ESD+ Summary of contents

Page 1

... MAX3291 MAX3292 7(6) GND Pin Configuration appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. ____________________________Features Preemphasis Increases the Distance and Data Rate of Reliable RS-485/RS-422 Communication ...

Page 2

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication ABSOLUTE MAXIMUM RATINGS Supply Voltage ( .................................................+6V CC CCD Control Input Voltage (RE, DE, PEE, PSET, DI) .................................................-0. Driver Output Voltage (Y, Z) ................................-7.5V to +12.5V Receiver ...

Page 3

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication DC ELECTRICAL CHARACTERISTICS (continued) (Typical Operating Circuit +5V ±5 noted. Typical values are +5V and T CC PARAMETER SYMBOL RECEIVER Input Current (A and B) ...

Page 4

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication SWITCHING CHARACTERISTICS (continued) (Typical Operating Circuit +5V ±5 Typical values are +5V and T = +25°C PARAMETER SYMBOL Driver Enable to Output High ...

Page 5

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication __________________________________________Typical Operating Characteristics (V = +5V +25°C, unless otherwise noted TYPICAL PREEMPHASIS WAVEFORM 100ns/div DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs. R DIFF 4.5 STRONG ...

Page 6

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication ____________________________________Typical Operating Characteristics (continued +5V +25°C, unless otherwise noted DRIVER PROPAGATION DELAY 5V/ DI div 2.5V div 20ns/div NO-LOAD SUPPLY CURRENT ...

Page 7

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication PIN NAME MAX3291 MAX3292 1 — PEE — 1 PSET N. GND 9 ...

Page 8

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication DIFF ODP Figure 3. Driver Timing Test Circuit DPLH DPHL ...

Page 9

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication V ATE ID Figure 9. Receiver Propagation Delay Test Circuit Figure 11. Time-to-Shutdown Test Circuit TRANSMITTING INPUTS ...

Page 10

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication Detailed Description The MAX3291/MAX3292 high-speed RS-485/RS-422 transceivers feature driver preemphasis circuitry, which extends the distance and increases the data rate of reliable communication by reducing intersymbol inter- ference (ISI) caused by long ...

Page 11

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication Setting the Preemphasis Interval The MAX3291 has an internal fixed preemphasis interval of 100ns. Use the MAX3291 for existing designs requiring industry-standard ’75180 pin-compatibility at data rates of 5Mbps to 10Mbps. The ...

Page 12

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication % Jitter = (total jitter / t BAUD When the total amount of time skew becomes 10% or more of the baud period, the data error rate can increase sharply. 128 Transceivers ...

Page 13

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication 3) Don’t overload the cable with too many receivers. Even though the MAX3291/MAX3292 receives pre- sent only 1/4-unit load, placing 128 receivers on the cable will attenuate the signal if spaced out ...

Page 14

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication Pin Configuration TOP VIEW MAX3291 MAX3292 PEE (PSET N.C. (GND) 6 GND 7 SO/DIP ( ) ARE FOR ...

Page 15

RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance Communication ________________________________________________________Package Information ______________________________________________________________________________________ 15 ...

Page 16

... 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. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1999 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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