DS232AR-N Equivalent & Substitute Parts

Part Overview

The DS232AR-N is a 2/2 transceiver full RS232 interface IC manufactured by Analog Devices Inc./Maxim Integrated in a 16-SOIC package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The DS232AR-N operates across a supply voltage range of 4.5V to 5.5V with an operating temperature range of -40°C to 85°C, supporting full-duplex RS232 communication at 350kbps data rate.

Key Parameters

Parameter	DS232AR-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)
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the DS232AR-N is determined by the following critical parameters:

Protocol compatibility: All substitutes must support RS232 full-duplex communication with 2/2 driver/receiver configuration.

Electrical specifications: Supply voltage range (4.5V ~ 5.5V) and operating temperature range (-40°C ~ 85°C) must be maintained or exceeded.

Package compatibility: The 16-SOIC package form factor is required for direct PCB replacement without layout modifications.

Data rate capability: Substitute parts must support minimum 350kbps data rate to maintain system performance.

Receiver hysteresis: 500 mV hysteresis specification is a key electrical parameter for signal integrity.

Compliance status: Active product status and RoHS3 compliance are preferred for new designs, though functional equivalence is the primary criterion.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Supply Voltage	Operating Temp	Package	Product Status	RoHS Status
DS232AR-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	RoHS non-compliant
MAX232AESE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	200kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154", 3.90mm)	Active	ROHS3 Compliant
ADM232AARNZ	UMW	RS232	2/2	120Kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154", 3.90mm)	Active	ROHS3 Compliant
ADM232AARNZ-REEL	Analog Devices Inc.	RS232	2/2	200kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154", 3.90mm)	Active	ROHS3 Compliant
ADM232AARNZ-REEL7	Analog Devices Inc.	RS232	2/2	200kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154", 3.90mm)	Active	ROHS3 Compliant
ADM232LARZ	Analog Devices Inc.	RS232	2/2	120Kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.295", 7.50mm)	Active	ROHS3 Compliant
ADM232LARZ-REEL	Analog Devices Inc.	RS232	2/2	120Kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.295", 7.50mm)	Active	ROHS3 Compliant
HIN232ACBNZ	Renesas Electronics Corporation	RS232	2/2	230kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC (0.154", 3.90mm)	Active	ROHS3 Compliant
HIN232ACBNZ-T	Renesas Electronics Corporation	RS232	2/2	230kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC (0.154", 3.90mm)	Active	ROHS3 Compliant
HIN232CBZ	Renesas Electronics Corporation	RS232	2/2	120Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC (0.295", 7.50mm)	Active	ROHS3 Compliant
HIN232CBZ-T	Renesas Electronics Corporation	RS232	2/2	120Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC (0.295", 7.50mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

For applications requiring direct pin-compatible replacement with identical package dimensions (16-SOIC 0.295" width), ADM232LARZ and ADM232LARZ-REEL are suitable substitutes. Both parts maintain the same physical footprint as the DS232AR-N and support the full -40°C to 85°C operating temperature range. These parts are manufactured by Analog Devices Inc. and carry ROHS3 compliance status.

For applications where package size reduction is acceptable, MAX232AESE+, ADM232AARNZ, ADM232AARNZ-REEL, and ADM232AARNZ-REEL7 utilize the smaller 16-SOIC 0.154" width package. These parts maintain full supply voltage compatibility (4.5V ~ 5.5V) and extended temperature range (-40°C ~ 85°C). The MAX232AESE+ and ADM232AARNZ variants support 200kbps and 120kbps data rates respectively, which are lower than the original 350kbps specification but sufficient for most RS232 applications.

HIN232ACBNZ and HIN232ACBNZ-T from Renesas Electronics Corporation support 230kbps data rate with the smaller package form factor. However, these parts operate within a narrower temperature range (0°C ~ 70°C), which does not cover the full -40°C to 85°C specification of the DS232AR-N. These parts are suitable only for applications operating within the 0°C to 70°C range.

HIN232CBZ and HIN232CBZ-T maintain the larger 16-SOIC 0.295" package dimension but operate at 120kbps data rate and 0°C to 70°C temperature range, making them suitable only for applications with relaxed temperature requirements.

All substitute parts listed maintain 2/2 full-duplex RS232 transceiver functionality and 4.5V to 5.5V supply voltage compatibility. All active substitutes carry ROHS3 compliance status, supporting modern design requirements.

Frequently Asked Questions (FAQ)

Q: Can the DS232AR-N be directly replaced with MAX232AESE+ without PCB modifications?

A: MAX232AESE+ uses a smaller 16-SOIC package (0.154" width) compared to the DS232AR-N (0.295" width). While both are 16-pin SOIC packages, the different body widths require PCB footprint changes. Pin assignments are compatible for RS232 transceiver function.

Q: What is the primary limitation when substituting with HIN232 series parts?

A: HIN232 series parts (HIN232ACBNZ, HIN232ACBNZ-T, HIN232CBZ, HIN232CBZ-T) operate within a 0°C to 70°C temperature range, which does not cover the full -40°C to 85°C specification of the DS232AR-N. These parts are suitable only for applications operating within the narrower temperature window.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts listed carry ROHS3 compliance status. The original DS232AR-N is RoHS non-compliant. For new designs subject to RoHS requirements, any of the listed active substitutes satisfy compliance requirements.

Q: How does data rate affect substitution suitability?

A: The DS232AR-N supports 350kbps data rate. Most substitute parts support lower data rates (120kbps to 230kbps). Substitution is valid if the application data rate requirement does not exceed the substitute part's maximum data rate specification.

Q: What is the difference between ADM232AARNZ and ADM232AARNZ-REEL variants?

A: Both parts are functionally identical RS232 transceivers with identical electrical specifications. The difference is in packaging format: ADM232AARNZ is supplied in Cut Tape (CT) & Digi-Reel format, while ADM232AARNZ-REEL is also supplied in Cut Tape & Digi-Reel format. The "-REEL" designation indicates reel packaging for automated assembly.

Q: Can ADM232LARZ replace DS232AR-N in applications requiring -40°C to 85°C operation?

A: Yes. ADM232LARZ maintains the same 16-SOIC 0.295" package dimension and supports the full -40°C to 85°C operating temperature range. It is manufactured by Analog Devices Inc. and carries ROHS3 compliance. The 120kbps data rate is lower than the original 350kbps specification but is suitable for most RS232 applications.

Q: What receiver hysteresis values are specified for substitute parts?

A: The DS232AR-N specifies 500 mV receiver hysteresis. ADM232AARNZ-REEL and ADM232AARNZ-REEL7 specify 400 mV hysteresis. ADM232LARZ and ADM232LARZ-REEL specify 650 mV hysteresis. HIN232 series parts specify 500 mV hysteresis. Hysteresis differences do not prevent functional substitution but may affect noise immunity characteristics in specific applications.

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