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 is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The DS232AE+ provides bidirectional RS232 communication with 500 mV receiver hysteresis and operates across the industrial temperature range of -40°C to 85°C.

Substiute Parts

DS232AE+

Analog Devices Inc./Maxim IntegratedIn Stock: 819DS232AE+ 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: RS232 transceiver functionality
• Channel Configuration: 2 drivers and 2 receivers (2/2 configuration)
• Duplex Mode: Full-duplex operation
• Receiver Hysteresis: 500 mV threshold
• Supply Voltage Range: 4.5V ~ 5.5V compatibility
• Regulatory Compliance: ROHS3 and REACH status alignment

The MAX232ACPE+ meets these core functional requirements. However, differences in package type (16-DIP through-hole versus 20-TSSOP surface-mount), data rate specification (200 kbps versus 350 kbps), and operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C) must be evaluated against specific application constraints.

Parameter Comparison

Engineering Selection Recommendations

The MAX232ACPE+ is an active-status equivalent for the obsolete DS232AE+, sharing identical core RS232 transceiver functionality, channel configuration, and regulatory compliance certifications. Both components are ROHS3 compliant and REACH unaffected, ensuring regulatory alignment for new designs and legacy system support.

Selection between these parts depends on application-specific constraints:

• Surface-mount requirement: The DS232AE+ 20-TSSOP package is necessary for compact PCB layouts. The MAX232ACPE+ 16-DIP through-hole package requires different board design and assembly processes.
• Extended temperature operation: Applications requiring -40°C operation must use the DS232AE+. The MAX232ACPE+ operates from 0°C minimum.
• Data rate specification: The DS232AE+ supports 350 kbps; the MAX232ACPE+ is specified at 200 kbps. Applications requiring higher data rates should verify MAX232ACPE+ performance in the target system.

Frequently Asked Questions (FAQ)

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

A: Functional replacement is possible only if the application tolerates through-hole mounting instead of surface-mount, operates within 0°C to 70°C temperature range, and does not require the 350 kbps data rate specification. PCB redesign is required due to package differences.

Q: Are there package-compatible alternatives to DS232AE+?

A: The provided substitute list contains only MAX232ACPE+, which uses a different package type (16-DIP). No 20-TSSOP surface-mount alternatives are listed in this reference.

Q: What is the significance of the 500 mV receiver hysteresis specification?

A: Receiver hysteresis determines the voltage threshold differential for logic state transitions. Both the DS232AE+ and MAX232ACPE+ specify 500 mV hysteresis, ensuring equivalent noise immunity and signal integrity characteristics in RS232 communication circuits.

Q: Does the data rate difference affect compatibility?

A: The DS232AE+ 350 kbps specification exceeds the MAX232ACPE+ 200 kbps rating. Applications operating below 200 kbps are unaffected. Higher-speed applications must evaluate MAX232ACPE+ performance against actual system requirements.

Q: Are both parts suitable for industrial applications?

A: The DS232AE+ supports -40°C to 85°C operation, covering industrial temperature ranges. The MAX232ACPE+ operates 0°C to 70°C, limiting use to commercial and light industrial environments. Application temperature requirements determine part selection.