MAX3430CPA+ Maxim Integrated Products, MAX3430CPA+ Datasheet

IC TXRX RS-485 3.3V 8-DIP

MAX3430CPA+

Manufacturer Part Number
MAX3430CPA+
Description
IC TXRX RS-485 3.3V 8-DIP
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet

Specifications of MAX3430CPA+

Number Of Drivers/receivers
1/1
Protocol
RS485
Voltage - Supply
3 V ~ 3.6 V
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Data Rate
250Kbps
Supply Voltage Range
3V To 3.6V
Logic Case Style
DIP
No. Of Pins
8
Operating Temperature Range
0°C To +70°C
Data Rate Max
250Kbps
Driver Case Style
DIP
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3430 fault-protected RS-485 transceiver features
±80V protection from overvoltage signal faults on commu-
nication bus lines. Each device contains one driver and
one receiver, and the output pins can withstand faults,
with respect to ground, of up to ±80V. Even if the faults
occur when the transceiver is active, shut down, or pow-
ered off, the device will not be damaged. The MAX3430
operates from a 3.3V supply and features a slew-rate-lim-
ited driver that minimizes EMI and reduces reflections
caused by improperly terminated cables, allowing error-
free data transmission at data rates up to 250kbps. The
MAX3430 has a 1/4-unit-load receiver input impedance
allowing up to 128 transceivers on a single bus and fea-
tures fail-safe circuitry, which guarantees a logic-high
receiver output when the receiver inputs are open.
Hot-swap circuitry eliminates false transitions on the
data cable during circuit initialization or connection to a
live backplane. Short-circuit current limiting and ther-
mal-shutdown circuitry protect the driver against exces-
sive power dissipation.
The MAX3430 is available in 8-pin SO and 8-pin PDIP
packages, and is specified over commercial and indus-
trial temperature ranges.
19-2756; Rev 1; 4/03
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.
RS-422/RS-485 Communications
Lighting Systems
Industrial-Control Local Area Networks
Profibus Applications
Multimaster RS-485 Networks
TOP VIEW
RO
RE
DE
DI
________________________________________________________________ Maxim Integrated Products
1
2
3
4
1/4-Unit Load, +3.3V RS-485 Transceiver
General Description
D
DIP/SO
R
Applications
8
7
6
5
V
B
A
GND
CC
Pin Configuration and Typical Operating Circuit
±80V Fault-Protected, Fail-Safe,
RO
DE
RE
DI
1
2
3
4
D
o ±80V Fault Protection
o ±12kV ESD Protection
o +3.3V Operation
o Internal Slew-Rate Limiting
o 250kbps Data Rate
o Allows Up to 128 Transceivers on the Bus
o -7V to +12V Common-Mode Input Voltage Range
o True Fail-Safe Inputs
o Hot-Swap Input Structure on DE
o Available in 8-Pin SO and PDIP Packages
R
MAX3430CPA
MAX3430CSA
MAX3430EPA
MAX3430ESA
PART
8
7
6
5
V
CC
B
A
GND
Rt
0.1µF
-40°C to +85°C
-40°C to +85°C
Ordering Information
TEMP RANGE
0°C to +70°C
0°C to +70°C
MAX3430
Rt
B
A
R
D
DE
RE
PIN-PACKAGE
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
Features
DI
RO
1

Related parts for MAX3430CPA+

MAX3430CPA+ Summary of contents

Page 1

... DIP/SO ________________________________________________________________ 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. ±80V Fault-Protected, Fail-Safe, o ±80V Fault Protection o ±12kV ESD Protection o +3.3V Operation o Internal Slew-Rate Limiting o 250kbps Data Rate o Allows Up to 128 Transceivers on the Bus ...

Page 2

Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver ABSOLUTE MAXIMUM RATINGS (All voltages are referenced to GND.) V ........................................................................................+5V CC RE, DE, DI...................................................-0. Driver Output Voltage (A, B) (Note 1) ..................................±80V Receiver Input Voltage (A, B) (Note 1) ...

Page 3

Load, +3.3V RS-485 Transceiver DC ELECTRICAL CHARACTERISTICS (continued +3.3V ±10 MIN MAX PARAMETER SYMBOL RECEIVER LOGIC RO Output High Voltage RO Output Low Voltage Three-State Output Current at Receiver Receiver ...

Page 4

Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver DRIVER SWITCHING CHARACTERISTICS = +3.3V ±10 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL t DPLH Driver Propagation Delay ...

Page 5

Load, +3.3V RS-485 Transceiver (V = +3.3V +25°C, unless otherwise noted SUPPLY CURRENT vs. TEMPERATURE -40 - ...

Page 6

Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver Figure 1. Driver DC Test Load DPHL DPLH 1/2 ...

Page 7

Load, +3.3V RS-485 Transceiver Figure 6. Receiver Propagation Delays S3 +1.5V -1.5V GENERATOR RE t RZH RO RE 1.5V t RHZ RO 0.25V Figure 7. Receiver Enable and Disable Times _______________________________________________________________________________________ ±80V Fault-Protected, Fail-Safe, Test ...

Page 8

Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver PIN NAME 1 RO Receiver Output Receiver Output Enable enabled when RE is low high impedance when RE is high. The RE 2 device enters a low-power shutdown ...

Page 9

Load, +3.3V RS-485 Transceiver Detailed Description The driver accepts a single-ended, logic-level input (DI) and transfers differential, RS-485 level output (A and B). Driving DE high enables the driver, while pulling DE low places the driver ...

Page 10

Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver stage, provides immediate protection against short cir- cuits over the whole common-mode voltage range. The second, a thermal shutdown circuit, forces the driver outputs into a high-impedance state if the die tempera- ...

Page 11

Load, +3.3V RS-485 Transceiver Applications Information 128 Transceivers on the Bus The standard RS-485 receiver input impedance is 12kΩ (one-unit load), and a standard driver can drive up to 32-unit loads. The MAX3430 transceiver 1/4-unit-load receiver input impedance (48kΩ) ...

Page 12

Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver (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 ...

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 © 2003 Maxim Integrated Products ± ...

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