DS232AE RS232 Transceiver - Equivalent & Substitute Parts

Part Overview

The DS232AE is a 2/2 full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 20-TSSOP surface mount package. This component interfaces between TTL/CMOS logic levels and RS232 signal levels, supporting bidirectional communication with 2 drivers and 2 receivers. The DS232AE is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

DS232AE

Analog Devices Inc./Maxim IntegratedIn Stock: 780DS232AE Datasheet

Current PartRFQ

MAX232ACPE+

Analog Devices Inc./Maxim IntegratedIn Stock: 39821MAX232ACPE+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS232AE is determined by the following critical parameters:

• Protocol Compatibility: Both main and substitute parts must implement RS232 transceiver functionality
• Driver/Receiver Configuration: 2/2 full-duplex architecture must be maintained
• Electrical Specifications: Supply voltage range (4.5V ~ 5.5V), receiver hysteresis (500 mV), and data rate capability must be met or exceeded
• Operating Temperature: Substitute must support the required temperature range or be suitable for the intended application environment
• Package and Mounting: Physical form factor determines PCB integration method (surface mount vs. through-hole)

The MAX232ACPE+ qualifies as a manufacturer-recommended substitute based on matching protocol, driver/receiver count, duplex mode, receiver hysteresis, and supply voltage specifications. Differences in package type, mounting method, data rate, and operating temperature range reflect design trade-offs between the obsolete surface-mount variant and the active through-hole alternative.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The DS232AE is obsolete, while MAX232ACPE+ is active and in production. For new designs or system replacements, MAX232ACPE+ provides continuity of supply and manufacturer support.

Compliance and Certification: MAX232ACPE+ is ROHS3 compliant, whereas DS232AE is RoHS non-compliant. Systems requiring RoHS compliance must transition to MAX232ACPE+ or equivalent compliant alternatives.

Functional Equivalence: Both parts meet the core RS232 transceiver requirements with matching driver/receiver counts, duplex mode, receiver hysteresis, and supply voltage specifications. The substitute is suitable for applications where the operating temperature range of 0°C ~ 70°C is acceptable and the data rate of 200 kbps is sufficient.

Package and Integration: Selection between DS232AE (surface mount, 20-TSSOP) and MAX232ACPE+ (through-hole, 16-DIP) depends on PCB design constraints and manufacturing capabilities. Surface-mount designs require DS232AE or equivalent surface-mount RS232 transceivers; through-hole designs can utilize MAX232ACPE+.

Frequently Asked Questions (FAQ)

Q: Can MAX232ACPE+ directly replace DS232AE in existing designs?

A: Functional replacement is possible if PCB layout accommodates the different package type (16-DIP through-hole vs. 20-TSSOP surface mount) and operating temperature requirements (0°C ~ 70°C vs. -40°C ~ 85°C) are met. Pin-to-pin compatibility must be verified against schematic requirements.

Q: What is the significance of the 350 kbps vs. 200 kbps data rate difference?

A: DS232AE supports 350 kbps; MAX232ACPE+ supports 200 kbps. For applications requiring data rates above 200 kbps, DS232AE or higher-speed alternatives must be used. Most standard RS232 applications operate below 200 kbps and are unaffected by this difference.

Q: Why does MAX232ACPE+ have a narrower operating temperature range?

A: MAX232ACPE+ is rated 0°C ~ 70°C, while DS232AE is rated -40°C ~ 85°C. Applications requiring extended temperature operation below 0°C or above 70°C must use DS232AE or temperature-rated equivalents. Standard commercial environments typically operate within the MAX232ACPE+ range.

Q: Is RoHS compliance a mandatory consideration for substitution?

A: RoHS compliance depends on application and regulatory requirements. DS232AE is RoHS non-compliant; MAX232ACPE+ is ROHS3 compliant. New designs and systems subject to RoHS regulations must use compliant alternatives.

Q: Are there other 2/2 RS232 transceiver alternatives to DS232AE?

A: Substitution criteria are limited to parts meeting 2/2 full-duplex RS232 transceiver specifications with matching electrical parameters (500 mV hysteresis, 4.5V ~ 5.5V supply). MAX232ACPE+ is the manufacturer-recommended substitute. Additional alternatives may exist from other manufacturers meeting these specifications.