DS232AS-N+ RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The DS232AS-N+ is a 2/2 full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-SOIC surface mount package. This interface IC operates across the 4.5V to 5.5V supply range with a data rate of 350kbps and receiver hysteresis of 500 mV. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. Substitute parts must maintain compatibility across electrical specifications, mechanical packaging, and functional performance parameters.

Key Parameters

Parameter	DS232AS-N+
Manufacturer	Analog Devices Inc./Maxim Integrated
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	350kbps
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the DS232AS-N+ is determined by the following critical parameters:

Electrical Compatibility Requirements:

Protocol: RS232 (mandatory)
Number of Drivers/Receivers: 2/2 (mandatory)
Duplex: Full (mandatory)
Voltage - Supply: 4.5V ~ 5.5V (mandatory)
Data Rate: minimum 350kbps or higher (mandatory for performance equivalence)

Mechanical Compatibility Requirements:

Mounting Type: Surface Mount (mandatory)
Package / Case: 16-SOIC (mandatory for PCB layout compatibility)
Supplier Device Package: 16-SOIC or 16-SOP (acceptable variants)

Environmental & Compliance Requirements:

Operating Temperature: -40°C ~ 85°C preferred; 0°C ~ 70°C acceptable for commercial applications
RoHS Status: ROHS3 Compliant (mandatory)
Moisture Sensitivity Level: 1 (Unlimited) preferred

Substitute parts are grouped by their alignment with these parameters. Parts with identical electrical and mechanical specifications are direct substitutes. Parts with lower data rates or different temperature ranges are functional alternatives for specific application contexts.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Supply Voltage	Operating Temp	Package	Product Status	Inventory
DS232AS-N+	Analog Devices Inc./Maxim Integrated	RS232	2/2	350kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.295", 7.50mm)	Obsolete	764 Pcs
MAX232ACSE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	200kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC (0.154", 3.90mm)	Active	1302 Pcs
ADM232AARNZ	UMW	RS232	2/2	120Kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154", 3.90mm)	Active	2453 Pcs
ADM232AARNZ-REEL	Analog Devices Inc.	RS232	2/2	200kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154", 3.90mm)	Active	4793 Pcs
ADM232AARNZ-REEL7	Analog Devices Inc.	RS232	2/2	200kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154", 3.90mm)	Active	4200 Pcs
ADM232AARWZ	Analog Devices Inc.	RS232	2/2	200kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.295", 7.50mm)	Active	5200 Pcs
ADM232AARWZ-REEL	Analog Devices Inc.	RS232	2/2	200kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.295", 7.50mm)	Active	3160 Pcs
ADM232LARZ	Analog Devices Inc.	RS232	2/2	120Kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.295", 7.50mm)	Active	1110 Pcs
ADM232LARZ-REEL	Analog Devices Inc.	RS232	2/2	120Kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.295", 7.50mm)	Active	5200 Pcs
ADM232LJRZ	Analog Devices Inc.	RS232	2/2	120Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC (0.295", 7.50mm)	Active	24596 Pcs
ADM232LJRZ-REEL	Analog Devices Inc.	RS232	2/2	120Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC (0.154", 3.90mm)	Active	8577 Pcs

Engineering Selection Recommendations

Direct Substitutes (Highest Compatibility):

ADM232AARWZ and ADM232AARWZ-REEL are the closest functional equivalents. Both maintain the 16-SOIC (0.295", 7.50mm) package footprint matching the DS232AS-N+, operate across the full -40°C to 85°C temperature range, and support 4.5V to 5.5V supply voltage. Data rate is 200kbps, which is lower than the original 350kbps but remains suitable for standard RS232 communication applications. Both parts are active products with ROHS3 compliance and unlimited MSL rating.

Alternative Substitutes (Package-Compatible, Temperature-Compatible):

ADM232AARNZ-REEL and ADM232AARNZ-REEL7 provide 200kbps data rate with full temperature range support (-40°C to 85°C) but use the narrower 16-SOIC (0.154", 3.90mm) package. These are suitable for applications where PCB layout accommodates the smaller package footprint.

Commercial Temperature Range Alternatives:

MAX232ACSE+ operates within 0°C to 70°C and delivers 200kbps data rate. This part is suitable for commercial-grade applications that do not require extended temperature operation. The narrower package (0.154", 3.90mm) requires PCB layout verification.

Lower Data Rate Alternatives:

ADM232LARZ, ADM232LARZ-REEL, ADM232LJRZ, and ADM232LJRZ-REEL support 120Kbps data rate. These parts are appropriate for legacy systems or applications with reduced bandwidth requirements. ADM232LARZ variants maintain the full -40°C to 85°C temperature range, while ADM232LJRZ variants operate within 0°C to 70°C.

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) ratings, ensuring regulatory and environmental compatibility with the original DS232AS-N+.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a lower data rate than the DS232AS-N+?

A: Yes, if your application does not require the full 350kbps bandwidth. RS232 communication at 120kbps or 200kbps is suitable for many industrial and legacy systems. Verify your system's actual data rate requirements before selecting a lower-speed substitute.

Q: What is the difference between the 16-SOIC (0.295", 7.50mm) and 16-SOIC (0.154", 3.90mm) packages?

A: The width dimension differs. The 0.295" package is wider and matches the DS232AS-N+ footprint. The 0.154" package is narrower and requires PCB layout adjustment. Both are 16-SOIC packages with identical pin counts and spacing; only the body width varies. Verify your PCB layout before selecting a narrower package variant.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, matching the environmental compliance of the original DS232AS-N+.

Q: Which substitute offers the best inventory availability?

A: ADM232LJRZ has the highest inventory at 24,596 pieces. ADM232AARNZ-REEL and ADM232LARZ-REEL also maintain substantial stock levels above 5,000 pieces.

Q: Can I use ADM232AARNZ from UMW as a direct substitute?

A: ADM232AARNZ is functionally compatible but operates at 120Kbps data rate and uses the narrower 16-SOIC (0.154", 3.90mm) package. It is suitable for applications with reduced bandwidth requirements and PCB layouts that accommodate the narrower package.

Q: What is the operating temperature difference between substitute options?

A: ADM232AARWZ, ADM232AARNZ-REEL, ADM232AARNZ-REEL7, ADM232LARZ, and ADM232LARZ-REEL support the full -40°C to 85°C range matching the DS232AS-N+. MAX232ACSE+, ADM232LJRZ, and ADM232LJRZ-REEL operate within 0°C to 70°C, suitable for commercial-grade applications only.

Q: Do all substitutes maintain the same receiver hysteresis specification?

A: No. The DS232AS-N+ specifies 500 mV receiver hysteresis. ADM232AARNZ-REEL, ADM232AARNZ-REEL7, ADM232AARWZ, and ADM232AARWZ-REEL specify 400 mV hysteresis. ADM232LARZ, ADM232LARZ-REEL, ADM232LJRZ, and ADM232LJRZ-REEL specify 650 mV hysteresis. Verify hysteresis requirements for noise-sensitive applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message