MAX251CSD+ by Analog Devices

5V, Isolated, RS-232 Driver Receiver


The MAX250 and MAX251 chip set form the heart of a complete, electronically isolated, RS-232 dual transmitter/receiver. By combining many functions on two chips, the cost and complexity required for an isolated digital interface is greatly reduced. Four low cost optocouplers, four capacitors, a diode and a small pot-core type transformer are all that are required to complete a 19.2k baud transceiver. Faster data rates are possible by using high speed optocouplers. In addition to the driving and receiving circuitry for the optocouplers, the chip set includes a push-pull transformer driver to supply power to the interface's isolated side. Other convenient features include single +5V operation, a low power shutdown mode, and output enable control for three-state operation. The MAX250 and MAX251 are supplied in 14 lead DIP, 14 lead small outline and 20 leadless chip carrier packages. The MAX252 has all the required components for RS-232 communication in a single package.

Where to Buy

Prices starting from US$7.28

Distributor Stock
Logo for RS
RS
from US$10.33
70
in stock
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Logo for Analog Devices
Analog Devices
from US$7.75
918
in stock
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Logo for Newark Electronics
Newark Electronics
from US$8.78
22
in stock
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Logo for element14
element14
from US$8.14
22
in stock
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Logo for Farnell
Farnell
from US$7.56
22
in stock
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Logo for Schukat Electronic
Schukat Electronic
from US$7.28
-
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Features

Isolated Data Interface
Single +5V Supply
Uses Low Cost Optocouplers
5µW Power Shutdown
2 Transmitters and 2 Receivers

Specifications

# Rx 2
# Tx 2
VSUPPLY (V) 5
Data Rate (kbps) (min) 116
ICC (mA) (typ) 0.1
Internal Charge Pump Yes
Package/Pins PDIP/14SOIC (N)/14
BudgetaryPrice (See Notes) 4.65


MAX251CSD+ Semiconductors - ICs by Analog Devices

DRIVER/RECEIVER RS-232 5V 251

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Device Type RS232 Driver / Receiver
IC Interface Type RS232
No. of Drivers 2Drivers
Supply Voltage Min 4.5V
Supply Voltage Max 5.5V
Driver Case Style SOIC
No. of Pins 14Pins
Operating Temperature Min 0°C
Operating Temperature Max 70°C
Product Range -
MSL MSL 1 - Unlimited
Base Number 251
Data Rate 116Kbps
IC Temperature Range Commercial
Operating Temperature Range 0°C to +70°C
Supply Current 0.7mA
Supply Voltage Range 4.5V to 5.5V
Termination Type Surface Mount Device

Alternative Descriptions

5V, Isolated, RS-232 Driver Re | Analog Devices
DUAL TRANSMITTER/RECEIVER RS-232 | RS
Driver/Receiver, Rs-232, 5V, 251 | Newark Electronics
DRIVER/RECEIVER, RS-232, 5V, 251 | element14
RS232E 2xDr./Rec. isol. 5V SO14 | Schukat Electronic

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX251CSD+ ?

Additional datasheets, footprints and schematics for MAX251CSD+ are listed on our Part Details page. You can also find images and similar parts to MAX251CSD+ on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for MAX251CSD+ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view MAX251CSD+ price breaks, MOQs, lead times, inventory and SKUs from distributors.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the MAX251CSD+ you can contact the distributor directly for product support, shipping queries etc.

Is the MAX251CSD+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX251CSD+ have stock available?

Authorised distributors including Analog Devices, RS, Newark Electronics, element14 and Farnell have stock available or on a lead time for MAX251CSD+ .

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for MAX251CSD+ often in real-time on the comparison pages.

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