TRS232DWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS232DWR is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The TRS232DWR provides full RS232 protocol compliance with 120 kbps data rate capability and operates across the 4.5V to 5.5V supply voltage range.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS232DWR
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	120 kbps
Voltage Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	16-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the TRS232DWR is determined by the following critical parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex Mode: Full
Package / Case: 16-SOIC (0.295", 7.50mm Width)
Voltage Supply Range: 4.5V ~ 5.5V
Receiver Hysteresis: 500 mV
Mounting Type: Surface Mount

Substitute parts are grouped into three categories based on product status and parametric alignment:

MFR Recommended Substitutes (Active Status): MAX232IDWR, HIN232CBZ, SP202ECT-L, SP202ECT-L/TR, SP202EET-L/TR, SP232ACT-L/TR, SP232ECT-L/TR

Parametric Equivalents (Obsolete Status): MAX232DWR, TRS202ECDWR

Direct Equivalents (Active Status, Alternative Packaging): MAX232CWE+

All listed substitutes maintain the core 2/2 full-duplex RS232 transceiver architecture with identical package footprints and supply voltage specifications.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Voltage Supply	Operating Temp	Package	Product Status	RoHS Status
TRS232DWR	Texas Instruments	RS232	2/2	120 kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Obsolete	ROHS3
MAX232IDWR	Texas Instruments	RS232	2/2	120 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	Active	ROHS3
MAX232DWR	Texas Instruments	RS232	2/2	120 kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Obsolete	ROHS3
TRS202ECDWR	Texas Instruments	RS232	2/2	120 kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Obsolete	ROHS3
MAX232CWE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	120 kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	ROHS3
HIN232CBZ	Renesas Electronics Corporation	RS232	2/2	120 kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	ROHS3
SP202ECT-L	MaxLinear, Inc.	RS232	2/2	240 kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	RoHS
SP202ECT-L/TR	MaxLinear, Inc.	RS232	2/2	240 kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	RoHS
SP202EET-L/TR	MaxLinear, Inc.	RS232	2/2	240 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	Active	RoHS
SP232ACT-L/TR	MaxLinear, Inc.	RS232	2/2	240 kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	RoHS
SP232ECT-L/TR	MaxLinear, Inc.	RS232	2/2	240 kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	ROHS3

Engineering Selection Recommendations

For Direct Replacement (Identical Operating Temperature Range): MAX232CWE+ and HIN232CBZ provide active product status with matching 0°C to 70°C operating temperature specifications. Both maintain ROHS3 compliance and are suitable for designs with the original temperature constraints.

For Extended Temperature Range Applications: MAX232IDWR and SP202EET-L/TR extend the operating temperature range to -40°C to 85°C, enabling deployment in industrial and automotive environments. MAX232IDWR maintains Texas Instruments sourcing continuity, while SP202EET-L/TR offers MaxLinear manufacturing with higher data rate capability (240 kbps).

For Higher Data Rate Requirements: SP202ECT-L, SP202ECT-L/TR, SP232ACT-L/TR, and SP232ECT-L/TR all support 240 kbps data rates, doubling the TRS232DWR specification. These parts are suitable for applications requiring enhanced communication bandwidth while maintaining full RS232 protocol compliance.

For Packaging Considerations: SP202ECT-L/TR, SP202EET-L/TR, SP232ACT-L/TR, and SP232ECT-L/TR are supplied in Tape & Reel format, optimizing for high-volume automated assembly. SP202ECT-L is available in Tube packaging for lower-volume requirements.

For Supply Chain Continuity: All recommended substitutes are in active production status. SP202EET-L/TR offers the highest inventory availability (23,200 pcs) among active parts, providing supply security for production programs.

Frequently Asked Questions (FAQ)

Q: Can MAX232IDWR replace TRS232DWR in all applications? A: MAX232IDWR is a direct parametric equivalent with identical electrical specifications and 16-SOIC package. The primary difference is extended operating temperature range (-40°C to 85°C versus 0°C to 70°C). It is suitable for replacement in designs operating within the original temperature range and provides active product status for long-term availability.

Q: What is the difference between SP202ECT-L and SP202EET-L/TR? A: Both are MaxLinear SP202 series parts with identical electrical specifications and 240 kbps data rate. SP202ECT-L is supplied in Tube packaging, while SP202EET-L/TR is supplied in Tape & Reel format. SP202EET-L/TR additionally supports the extended -40°C to 85°C operating temperature range.

Q: Are all substitute parts pin-compatible with TRS232DWR? A: All listed substitutes use the 16-SOIC package with identical pin assignments for the 2/2 full-duplex RS232 transceiver configuration. Pin compatibility is maintained across all recommended parts.

Q: What is the significance of the 240 kbps data rate in MaxLinear parts? A: MaxLinear SP202 and SP232 series parts support 240 kbps data rate, which is twice the TRS232DWR specification of 120 kbps. This higher rate is backward compatible with 120 kbps applications and provides headroom for future bandwidth requirements without requiring component redesign.

Q: Which substitute offers the best supply availability? A: SP202EET-L/TR maintains the highest inventory level at 23,200 pcs in active production status. This part combines extended temperature range (-40°C to 85°C), higher data rate (240 kbps), Tape & Reel packaging, and robust supply continuity.

Q: Are all substitutes RoHS compliant? A: All recommended substitutes are RoHS compliant. Texas Instruments and Renesas parts carry ROHS3 certification. MaxLinear parts carry RoHS Compliant status. Compliance certifications meet current environmental and regulatory requirements.

Q: What is the Moisture Sensitivity Level (MSL) impact on substitution? A: TRS232DWR and most Texas Instruments/Renesas substitutes carry MSL 1 (Unlimited). MaxLinear parts carry MSL 3 (168 Hours), requiring controlled storage and handling procedures. This difference does not affect electrical compatibility but impacts supply chain logistics and storage requirements.

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