DS14185WM Equivalent & Substitute Parts

Part Overview

The DS14185WM is a 3/5 Transceiver Full RS232 interface IC manufactured by Texas Instruments in a 20-SOIC surface mount package. This component is classified as obsolete, indicating it is no longer in active production. The DS14185WM operates at a data rate of 200kbps with a supply voltage range of 4.75V to 5.25V and is rated for 0°C to 70°C operating temperatures. Due to its obsolete status and limited availability, identifying functionally equivalent substitute parts is essential for ongoing system maintenance and new design implementations.

Substiute Parts

DS14185WM

Texas InstrumentsIn Stock: 20195DS14185WM Datasheet

Current PartRFQ

MAX3185CWP+

Analog Devices Inc./Maxim IntegratedIn Stock: 886MAX3185CWP+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS14185WM is determined by strict alignment of the following critical parameters:

Protocol compatibility: RS232 full duplex transceiver functionality Channel configuration: 3 drivers and 5 receivers Package type: 20-SOIC surface mount package with identical physical dimensions (0.295", 7.50mm Width) Electrical performance: Data rate capability of 200kbps or higher Supply voltage range: Minimum 4.75V support with maximum 5.25V or higher tolerance Operating temperature range: 0°C to 70°C minimum coverage Mounting technology: Surface mount only

The MAX3185CWP+ from Analog Devices Inc./Maxim Integrated meets all these substitution criteria. It maintains identical channel configuration (3/5), protocol (RS232), package format (20-SOIC), and operating temperature range. The MAX3185CWP+ provides enhanced electrical specifications including a higher data rate (230kbps), extended supply voltage range (4.5V ~ 5.5V), and active product status with RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The MAX3185CWP+ is the direct functional equivalent for the obsolete DS14185WM. Selection of the MAX3185CWP+ is supported by the following engineering factors:

Product status: The MAX3185CWP+ maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete DS14185WM.

Regulatory compliance: The MAX3185CWP+ is ROHS3 compliant, meeting current environmental and regulatory requirements. The DS14185WM is RoHS non-compliant, which may present compliance challenges in new designs or regulated applications.

Electrical performance: The MAX3185CWP+ provides a higher data rate (230kbps versus 200kbps) and an extended supply voltage range (4.5V ~ 5.5V versus 4.75V ~ 5.25V), offering improved operational flexibility.

Moisture handling: The MAX3185CWP+ features MSL 1 (Unlimited) compared to the DS14185WM's MSL 2A (4 Weeks), reducing moisture-related handling and storage constraints.

Package compatibility: Both components use identical 20-SOIC packaging, enabling direct board-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the MAX3185CWP+ directly replace the DS14185WM on existing PCBs?

A: Yes. Both components use the 20-SOIC package with identical pin assignments for RS232 3/5 transceiver functionality. No PCB layout changes are required for substitution.

Q: What are the key differences between these two parts?

A: The MAX3185CWP+ offers higher data rate capability (230kbps versus 200kbps), extended supply voltage tolerance (4.5V ~ 5.5V versus 4.75V ~ 5.25V), active product status, ROHS3 compliance, and improved moisture sensitivity rating (MSL 1 versus MSL 2A).

Q: Why is the DS14185WM obsolete?

A: The DS14185WM is classified as obsolete by Texas Instruments, indicating it is no longer manufactured. The MAX3185CWP+ represents the current-generation equivalent from Analog Devices Inc./Maxim Integrated.

Q: Are there any compatibility concerns when switching from DS14185WM to MAX3185CWP+?

A: No compatibility concerns exist for the specified operating parameters. Both components support identical RS232 protocol, 3/5 channel configuration, full duplex operation, and 0°C to 70°C temperature range. The MAX3185CWP+ provides enhanced specifications that are backward compatible with DS14185WM applications.

Q: What is the significance of the RoHS compliance difference?

A: The MAX3185CWP+ is ROHS3 compliant, meeting current environmental regulations for new product designs and applications subject to regulatory requirements. The DS14185WM's RoHS non-compliant status may restrict its use in regulated markets or new system designs.

Q: Does the moisture sensitivity level affect component handling?

A: Yes. The MAX3185CWP+ with MSL 1 (Unlimited) has no moisture-related storage restrictions, whereas the DS14185WM with MSL 2A requires controlled storage conditions (4 weeks maximum at specified humidity levels). The MAX3185CWP+ offers simplified inventory and handling procedures.