DS232A-N Equivalent & Substitute Parts

Part Overview

The DS232A-N is a 2/2 RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated in a 16-PDIP through-hole package. This part is classified as obsolete, which necessitates identification of active equivalent and substitute components for new designs or production continuity. The DS232A-N provides full-duplex RS232 communication with 350kbps data rate capability and operates across the industrial temperature range of -40°C to 85°C. Equivalent parts must maintain functional compatibility while meeting current RoHS and REACH compliance requirements.

Key Parameters

Parameter	DS232A-N Value
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	Through Hole
Package / Case	16-DIP (0.300", 7.62mm)
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the DS232A-N is determined by the following critical parameters:

Protocol Compatibility: All substitutes must implement RS232 full-duplex transceiver functionality with 2/2 driver/receiver configuration
Electrical Specifications: Supply voltage range (4.5V ~ 5.5V) and receiver hysteresis must be compatible with the original design
Package Compatibility: Through-hole mounting in 16-DIP package is required for direct PCB replacement without layout modification
Temperature Range: Operating temperature must support the -40°C to 85°C industrial range for equivalent substitution
Compliance Status: Active product status with RoHS3 compliance is preferred for long-term availability and regulatory adherence

Substitute parts are grouped into two categories: pin-compatible through-hole replacements (maintaining 16-DIP package) and alternative package options (surface-mount variants for design flexibility).

Parameter Comparison

Part Number	Manufacturer	Package	Mounting	Drivers/Receivers	Data Rate	Hysteresis	Temp Range	RoHS Status	Product Status
DS232A-N	Analog Devices/Maxim	16-DIP	Through Hole	2/2	350kbps	500 mV	-40°C ~ 85°C	Non-compliant	Obsolete
MAX232AEUE+	Analog Devices/Maxim	16-TSSOP	Surface Mount	2/2	200kbps	500 mV	-40°C ~ 85°C	ROHS3 Compliant	Active
ADM232AANZ	Analog Devices	16-DIP	Through Hole	2/2	200kbps	400 mV	-40°C ~ 85°C	ROHS3 Compliant	Active
ADM232LANZ	Analog Devices	16-DIP	Through Hole	2/2	120Kbps	650 mV	-40°C ~ 85°C	ROHS3 Compliant	Active
ADM232LJNZ	Analog Devices	16-DIP	Through Hole	2/2	120Kbps	650 mV	0°C ~ 70°C	ROHS3 Compliant	Active
HIN232ACPZ	Renesas Electronics	16-DIP	Through Hole	2/2	230kbps	500 mV	0°C ~ 70°C	ROHS3 Compliant	Active
HIN232CPZ	Renesas Electronics	16-DIP	Through Hole	2/2	120Kbps	500 mV	0°C ~ 70°C	ROHS3 Compliant	Active
HIN232ECPZ	Renesas Electronics	16-DIP	Through Hole	2/2	230kbps	500 mV	0°C ~ 70°C	ROHS3 Compliant	Active
HIN232IPZ	Renesas Electronics	16-DIP	Through Hole	2/2	120Kbps	500 mV	-40°C ~ 85°C	ROHS3 Compliant	Active
LT1081CN#PBF	Analog Devices	16-DIP	Through Hole	2/2	250KBd	400 mV	0°C ~ 70°C	ROHS3 Compliant	Active
LT1081IN#PBF	Analog Devices	16-DIP	Through Hole	2/2	250KBd	400 mV	-40°C ~ 85°C	ROHS3 Compliant	Active

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement (16-DIP Through-Hole):

ADM232AANZ and LT1081IN#PBF are the primary equivalents for applications requiring the full -40°C to 85°C industrial temperature range with active product status and RoHS3 compliance. ADM232AANZ maintains the 500 mV receiver hysteresis specification, while LT1081IN#PBF offers 250KBd data rate performance. Both are manufactured by Analog Devices and provide long-term supply continuity.

HIN232IPZ (Renesas Electronics) provides an alternative with matching temperature range and 500 mV hysteresis, offering supply diversification from a second-source manufacturer.

For Commercial Temperature Range Applications (0°C ~ 70°C):

HIN232ACPZ and HIN232ECPZ (Renesas Electronics) support 230kbps data rates with 500 mV hysteresis. LT1081CN#PBF (Analog Devices) offers 250KBd performance. These parts are suitable for non-industrial environments where the reduced temperature range is acceptable.

For Surface-Mount Design Conversion:

MAX232AEUE+ provides a 16-TSSOP surface-mount alternative with full -40°C to 85°C temperature range and RoHS3 compliance. This option requires PCB layout redesign but enables modern manufacturing processes.

All recommended substitutes maintain RoHS3 compliance and active product status, ensuring regulatory adherence and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can DS232A-N be directly replaced with MAX232AEUE+?

A: MAX232AEUE+ is functionally equivalent but uses 16-TSSOP surface-mount packaging instead of 16-DIP through-hole. Direct PCB substitution is not possible without layout modification. Use ADM232AANZ or LT1081IN#PBF for pin-compatible through-hole replacement.

Q: What is the difference between ADM232AANZ and ADM232LANZ?

A: Both are 16-DIP through-hole packages from Analog Devices. ADM232AANZ supports -40°C to 85°C with 200kbps data rate and 400 mV hysteresis. ADM232LANZ operates 0°C to 70°C with 120Kbps data rate and 650 mV hysteresis. Select based on temperature and data rate requirements.

Q: Why do some substitutes have lower data rates than the original DS232A-N?

A: The DS232A-N specified 350kbps, but equivalent parts from different manufacturers may have different rated data rates. ADM232AANZ (200kbps), HIN232CPZ (120Kbps), and LT1081 series (250KBd) all support RS232 full-duplex communication. Verify application data rate requirements before selection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All active substitute parts listed are RoHS3 compliant. The original DS232A-N is RoHS non-compliant due to its obsolete status. Compliance is a key factor in selecting modern equivalents.

Q: Which substitute offers the best temperature range coverage?

A: ADM232AANZ, LT1081IN#PBF, and HIN232IPZ all support the full -40°C to 85°C industrial temperature range matching the original DS232A-N specification. These are preferred for applications requiring extended temperature operation.

Q: Can I use HIN232ACPZ in an industrial application requiring -40°C operation?

A: No. HIN232ACPZ operates 0°C to 70°C only. For industrial temperature range (-40°C to 85°C), use ADM232AANZ, LT1081IN#PBF, or HIN232IPZ.

Q: What is the difference between HIN232ACPZ and HIN232ECPZ?

A: Both are Renesas 16-DIP through-hole parts with 500 mV hysteresis and 0°C to 70°C operation. HIN232ACPZ supports 230kbps data rate, while HIN232ECPZ also supports 230kbps. Both are functionally equivalent for commercial temperature applications.

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