TRS222CDW RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS222CDW 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, which necessitates identification of equivalent and substitute parts for ongoing design support and production continuity. The TRS222CDW operates within a 4.5V to 5.5V supply voltage range with a 200 kbps data rate and 500 mV receiver hysteresis, serving as a standard interface component for RS232 serial communication applications.

Substiute Parts

TRS222CDW

Texas InstrumentsIn Stock: 1134TRS222CDW Datasheet

Current PartRFQ

ADM222ARZ

Analog Devices Inc.In Stock: 5848ADM222ARZ Datasheet

MFR RecommendedRFQ

ADM222ARZ-REEL

Analog Devices Inc.In Stock: 1284ADM222ARZ-REEL 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

MAX222CDW

Texas InstrumentsIn Stock: 1022MAX222CDW Datasheet

Parametric EquivalentRFQ

MAX242CWN+

Analog Devices Inc./Maxim IntegratedIn Stock: 2175MAX242CWN+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TRS222CDW are classified based on strict adherence to the following electrical and mechanical parameters:

Core Substitution Criteria:

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

Grouping Logic:

Group 1: Manufacturer Recommended Substitutes (Active Status) Parts meeting all core substitution criteria with active product status and improved specifications:

• ADM222ARZ (Analog Devices Inc.)
• ADM222ARZ-REEL (Analog Devices Inc.)
• MAX222CWN+ (Analog Devices Inc./Maxim Integrated)
• MAX222CWN+T (Analog Devices Inc./Maxim Integrated)
• MAX222EWN+ (Analog Devices Inc./Maxim Integrated)
• MAX222EWN+T (Analog Devices Inc./Maxim Integrated)

Group 2: Parametric Equivalents Parts meeting all core substitution criteria with identical or compatible electrical specifications:

• MAX222CDW (Texas Instruments) - Parametric equivalent, obsolete status
• MAX242CWN+ (Analog Devices Inc./Maxim Integrated) - Active status

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Production Continuity:

Active product status substitutes are preferred for long-term availability and supply chain stability. The ADM222ARZ and ADM222ARZ-REEL from Analog Devices Inc. offer extended operating temperature range (-40°C to 85°C) and improved moisture sensitivity level (MSL 1, Unlimited), providing superior reliability characteristics compared to the obsolete TRS222CDW. These parts maintain identical data rate (200 kbps) and supply voltage specifications while offering lower receiver hysteresis (400 mV).

The MAX222 series variants (MAX222CWN+, MAX222CWN+T, MAX222EWN+, MAX222EWN+T) from Analog Devices Inc./Maxim Integrated provide higher data rate capability (250 kbps) with active product status. The MAX222EWN+ and MAX222EWN+T variants extend operating temperature to -40°C to 85°C, suitable for industrial applications. All MAX222 variants maintain ROHS3 compliance and MSL 1 rating.

The MAX242CWN+ provides parametric equivalence with identical electrical specifications (200 kbps data rate, 500 mV receiver hysteresis, 0°C to 70°C operating range) while offering active product status and improved MSL rating.

All substitute parts maintain the 18-SOIC package footprint, surface mount configuration, and RS232 protocol compatibility required for direct functional replacement.

Frequently Asked Questions (FAQ)

Q: Can the TRS222CDW be directly replaced with ADM222ARZ?

A: Yes. Both parts share identical RS232 protocol, 2/2 driver/receiver configuration, full-duplex operation, 4.5V to 5.5V supply voltage, and 18-SOIC package. The ADM222ARZ offers extended operating temperature range and improved moisture sensitivity rating, making it a suitable direct replacement for the obsolete TRS222CDW.

Q: What is the difference between MAX222CWN+ and MAX222EWN+?

A: Both parts maintain identical electrical specifications (250 kbps data rate, 500 mV receiver hysteresis, 4.5V to 5.5V supply voltage, 18-SOIC package). The primary difference is operating temperature range: MAX222CWN+ operates 0°C to 70°C, while MAX222EWN+ operates -40°C to 85°C. Selection depends on application temperature requirements.

Q: Are packaging differences between tube and tape & reel significant for substitution?

A: Packaging format (tube, tape & reel, cut tape) affects handling and assembly processes but does not impact electrical or mechanical compatibility. The 18-SOIC package dimensions remain identical across all substitute parts. Selection should be based on production assembly requirements and inventory management practices.

Q: Does the lower receiver hysteresis of ADM222ARZ (400 mV vs. 500 mV) affect compatibility?

A: Lower receiver hysteresis improves noise immunity and signal detection sensitivity. This represents an enhancement over the original TRS222CDW specification and does not create compatibility issues. Applications designed for 500 mV hysteresis will function correctly with 400 mV hysteresis.

Q: Which substitute part offers the best long-term availability?

A: All Analog Devices Inc./Maxim Integrated parts listed carry active product status, ensuring ongoing manufacturing and supply chain support. The ADM222ARZ, MAX222CWN+, MAX222CWN+T, MAX222EWN+, MAX222EWN+T, and MAX242CWN+ are all suitable for designs requiring extended component lifecycle support.

Q: Is the higher data rate of MAX222 series (250 kbps vs. 200 kbps) backward compatible?

A: Yes. Higher data rate capability is backward compatible with applications designed for 200 kbps operation. The MAX222 series will function correctly in circuits specified for 200 kbps data rates without modification.