TRS222CDWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS222CDWR is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in an 18-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support, maintenance, and new design implementations. The transceiver operates within a 4.5V to 5.5V supply range with a 200 kbps data rate and 500 mV receiver hysteresis, suitable for legacy RS232 serial communication applications.

Substiute Parts

TRS222CDWR

Texas InstrumentsIn Stock: 2298TRS222CDWR Datasheet

Current PartRFQ

MAX222CDWR

Texas InstrumentsIn Stock: 4385MAX222CDWR Datasheet

Parametric EquivalentRFQ

ADM222ARZ

Analog Devices Inc.In Stock: 5848ADM222ARZ Datasheet

MFR RecommendedRFQ

ADM222ARZ-REEL

Analog Devices Inc.In Stock: 1284ADM222ARZ-REEL Datasheet

MFR RecommendedRFQ

LT1080ISW#PBF

Analog Devices Inc.In Stock: 845LT1080ISW#PBF Datasheet

MFR RecommendedRFQ

LT1080ISW#TRPBF

Analog Devices Inc.In Stock: 2215LT1080ISW#TRPBF Datasheet

MFR RecommendedRFQ

MAX222CWN+

Analog Devices Inc./Maxim IntegratedIn Stock: 4002MAX222CWN+ Datasheet

MFR RecommendedRFQ

MAX222CWN+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3308MAX222CWN+T Datasheet

MFR RecommendedRFQ

MAX222EWN+

Analog Devices Inc./Maxim IntegratedIn Stock: 3985MAX222EWN+ Datasheet

MFR RecommendedRFQ

MAX222EWN+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3851MAX222EWN+T Datasheet

MFR RecommendedRFQ

MAX242CWN+T

Analog Devices Inc./Maxim IntegratedIn Stock: 4260MAX242CWN+T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TRS222CDWR is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Protocol: RS232
• Number of Drivers/Receivers: 2/2
• Duplex: Full
• Voltage Supply Range: 4.5V ~ 5.5V
• Package / Case: 18-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount

Allowable Variations:

• Receiver Hysteresis: 400 mV to 500 mV (both acceptable for RS232 operation)
• Data Rate: 200 kbps to 250 kbps (both exceed minimum RS232 requirements)
• Operating Temperature: Extended ranges (-40°C ~ 85°C) are compatible with 0°C ~ 70°C applications
• Product Status: Active parts are preferred over obsolete parts for new designs and long-term availability
• MSL Rating: Lower MSL values (1 vs. 2) indicate superior moisture resistance

Substitute parts are grouped into two categories: parametric equivalents (matching all core specifications) and manufacturer-recommended alternatives (active production parts with minor parameter enhancements).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Obsolete to Obsolete): MAX222CDWR is a parametric equivalent to TRS222CDWR with identical electrical specifications and packaging. Both parts are obsolete; this substitution is suitable only for maintenance of existing systems where component availability is confirmed.

For Long-Term Availability (Obsolete to Active): Active production alternatives are recommended for new designs and systems requiring extended component lifecycle support:

• MAX222CWN+T and MAX222EWN+T offer identical receiver hysteresis (500 mV) matching the original specification. MAX222EWN+T extends operating temperature to -40°C ~ 85°C and increases data rate to 250 kbps, providing enhanced performance margins.

• ADM222ARZ and ADM222ARZ-REEL provide active production status with superior moisture sensitivity (MSL 1 vs. MSL 2), extended operating temperature range, and equivalent electrical performance. The -REEL variant is packaged in cut tape format for automated assembly.

• LT1080ISW#PBF and LT1080ISW#TRPBF offer the highest data rate (250 kbps) and extended temperature range (-40°C ~ 85°C) with active production status. The #TRPBF variant is supplied on tape and reel for high-volume manufacturing.

Compliance and Certifications: All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original TRS222CDWR. MSL 1 rated parts (ADM222ARZ, LT1080ISW variants, MAX222 active variants) provide unlimited moisture sensitivity protection compared to the original MSL 2 (1 Year) rating.

Frequently Asked Questions (FAQ)

Q: Can MAX222CDWR directly replace TRS222CDWR? A: Yes, MAX222CDWR is a parametric equivalent with identical electrical and mechanical specifications. Both parts are obsolete; verify component availability before committing to this substitution.

Q: What is the difference between MAX222CWN+T and MAX222EWN+T? A: Both parts share identical receiver hysteresis (500 mV) and data rate (250 kbps). The primary difference is operating temperature range: MAX222CWN+T operates 0°C ~ 70°C, while MAX222EWN+T operates -40°C ~ 85°C. Select MAX222EWN+T for applications requiring extended temperature performance.

Q: Why do some substitutes have 400 mV receiver hysteresis instead of 500 mV? A: RS232 protocol allows receiver hysteresis between 400 mV and 500 mV. Both values meet the standard and are functionally compatible. The 400 mV specification in ADM222ARZ and LT1080ISW variants does not compromise RS232 compliance.

Q: What is the significance of the #TRPBF and #PBF suffixes on LT1080 parts? A: #TRPBF indicates tape and reel packaging for automated assembly lines. #PBF indicates tube packaging for manual or lower-volume assembly. Both variants are electrically identical; packaging selection depends on manufacturing process requirements.

Q: Are all substitute parts ROHS3 compliant? A: Yes, all listed substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original TRS222CDWR.

Q: What does MSL 1 (Unlimited) mean compared to MSL 2 (1 Year)? A: MSL rating indicates moisture sensitivity. MSL 1 (Unlimited) parts require no special moisture control during storage and handling. MSL 2 (1 Year) parts must be used within one year of manufacture or require baking before reflow soldering. Active substitute parts with MSL 1 provide superior handling flexibility.

Q: Can I use LT1080ISW#TRPBF in a design originally specified for TRS222CDWR? A: Yes, LT1080ISW#TRPBF is electrically compatible. It offers enhanced performance (250 kbps vs. 200 kbps data rate, -40°C ~ 85°C vs. 0°C ~ 70°C operating range) and active production status. Verify PCB layout compatibility with the 18-SOIC package footprint.

Q: Which substitute offers the best long-term availability? A: All active production parts (ADM222ARZ, LT1080ISW variants, MAX222 active variants, MAX242CWN+T) offer superior long-term availability compared to obsolete parts. For maximum lifecycle support, select from Analog Devices Inc. or Maxim Integrated active product lines.