TRS3232EIDWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS3232EIDWR is a full-duplex RS232 transceiver manufactured by Texas Instruments, configured as a 2/2 driver/receiver interface IC in 16-SOIC surface mount packaging. This device operates across a 3V to 5.5V supply range with a 250kbps data rate and 300mV receiver hysteresis, suitable for legacy serial communication applications. The part is currently in Last Time Buy status, making equivalent and substitute parts identification essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS3232EIDWR
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	250kbps
Voltage - Supply	3V ~ 5.5V
Receiver Hysteresis	300mV
Operating Temperature	-40°C ~ 85°C
Package / Case	16-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TRS3232EIDWR is determined by the following critical parameters:

Protocol Compatibility: RS232 full-duplex transceiver architecture
Driver/Receiver Configuration: 2/2 channel configuration
Package Compatibility: 16-SOIC surface mount form factor
Supply Voltage Range: 3V to 5.5V operation
Electrical Performance: Data rate capability and receiver hysteresis specifications
Operating Temperature Range: -40°C to 85°C extended industrial range
Compliance: ROHS3 compliance and MSL rating

Substitute parts are grouped into three categories based on their relationship to the main part:

Parametric Equivalents maintain identical electrical specifications and operating ranges, differing only in packaging format (Cut Tape vs. Tape & Reel).

Upgrade Options provide enhanced performance characteristics such as higher data rates (1Mbps) or improved receiver hysteresis (500mV), with trade-offs in operating temperature range (0°C to 70°C).

Manufacturer Recommended Alternatives offer functional equivalence from alternative manufacturers (Renesas, Analog Devices) with comparable specifications and compliance certifications.

Parameter Comparison

Part Number	Manufacturer	Drivers/Receivers	Data Rate	Receiver Hysteresis	Operating Temp	Supply Voltage	Package	Product Status
TRS3232EIDWR	Texas Instruments	2/2	250kbps	300mV	-40°C ~ 85°C	3V ~ 5.5V	16-SOIC (TR)	Last Time Buy
MAX3232EIDWR	Texas Instruments	2/2	250kbps	300mV	-40°C ~ 85°C	3V ~ 5.5V	16-SOIC (CT)	Active
MAX3232IDWR	Texas Instruments	2/2	250kbps	300mV	-40°C ~ 85°C	3V ~ 5.5V	16-SOIC (CT)	Active
MAX3232ECWE+	Analog Devices Inc./Maxim Integrated	2/2	1Mbps	500mV	0°C ~ 70°C	3V ~ 5.5V	16-SOIC (Tube)	Active
ICL3232ECBZ	Renesas Electronics Corporation	2/2	250kbps	500mV	0°C ~ 70°C	3V ~ 5.5V	16-SOIC (Tube)	Active
ICL3232ECBZ-T	Renesas Electronics Corporation	2/2	250kbps	500mV	0°C ~ 70°C	3V ~ 5.5V	16-SOIC (TR)	Active
MAX3232CWE+	Analog Devices Inc./Maxim Integrated	2/2	235Kbps	300mV	0°C ~ 70°C	3V ~ 5.5V	16-SOIC (Tube)	Active
MAX3232CWE+T	Analog Devices Inc./Maxim Integrated	2/2	235Kbps	300mV	0°C ~ 70°C	3V ~ 5.5V	16-SOIC (CT)	Active
MAX3232ECWE+T	Analog Devices Inc./Maxim Integrated	2/2	1Mbps	500mV	0°C ~ 70°C	3V ~ 5.5V	16-SOIC (CT)	Active
MAX3232EEWE+	Analog Devices Inc./Maxim Integrated	2/2	250kbps	500mV	-40°C ~ 85°C	3V ~ 5.5V	16-SOIC (Tube)	Active
MAX3232EEWE+T	Analog Devices Inc./Maxim Integrated	2/2	250kbps	500mV	-40°C ~ 85°C	3V ~ 5.5V	16-SOIC (CT)	Active

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalents)

MAX3232EIDWR and MAX3232IDWR provide identical electrical performance to the TRS3232EIDWR with matching 250kbps data rate, 300mV receiver hysteresis, and -40°C to 85°C operating range. Both parts are in Active product status from Texas Instruments. Selection between these options depends on packaging requirements: MAX3232EIDWR is available in Cut Tape format, while MAX3232IDWR is supplied in Cut Tape & Digi-Reel format.

Extended Temperature Range with Enhanced Hysteresis

MAX3232EEWE+ and MAX3232EEWE+T maintain the -40°C to 85°C operating range of the original part while providing 500mV receiver hysteresis (compared to 300mV). Data rate remains at 250kbps. These parts are suitable for applications requiring improved noise immunity in the extended temperature range. Packaging options include Tube (MAX3232EEWE+) and Cut Tape & Digi-Reel (MAX3232EEWE+T).

High-Speed Upgrade Options

MAX3232ECWE+ and MAX3232ECWE+T offer 1Mbps data rate capability with 500mV receiver hysteresis, representing a performance upgrade. Operating temperature range is restricted to 0°C to 70°C. These parts are appropriate for applications where extended temperature operation is not required but higher data rates are beneficial.

Manufacturer Alternatives

ICL3232ECBZ and ICL3232ECBZ-T from Renesas Electronics Corporation provide functional equivalence with 250kbps data rate and 500mV receiver hysteresis. Operating temperature is limited to 0°C to 70°C. ICL3232ECBZ-T is available in Tape & Reel packaging, matching the original part's format. Moisture Sensitivity Level is MSL 3 (168 Hours), compared to MSL 1 for the original part.

Commercial Temperature Range Options

MAX3232CWE+ and MAX3232CWE+T operate within 0°C to 70°C temperature range with 235Kbps data rate and 300mV receiver hysteresis. These parts are suitable for commercial applications where extended temperature operation is not required.

Frequently Asked Questions (FAQ)

Q: Can MAX3232EIDWR directly replace TRS3232EIDWR in production?

A: Yes. MAX3232EIDWR is a parametric equivalent with identical electrical specifications (250kbps, 300mV hysteresis, -40°C to 85°C range) and 16-SOIC packaging. The primary difference is packaging format (Cut Tape vs. Tape & Reel). Verify your assembly equipment compatibility with the packaging format before implementation.

Q: What is the difference between the various MAX3232 variants?

A: MAX3232 variants differ in temperature grade, data rate, receiver hysteresis, and packaging format. The temperature grade is indicated by the letter following "MAX3232": C-grade operates 0°C to 70°C, E-grade operates -40°C to 85°C. The next letter indicates hysteresis: C = 300mV, E = 500mV. The final suffix indicates packaging: WE+ = Tube, WE+T = Cut Tape & Digi-Reel.

Q: Is ICL3232ECBZ-T compatible with TRS3232EIDWR?

A: ICL3232ECBZ-T is functionally compatible with matching 2/2 driver/receiver configuration, RS232 protocol, 16-SOIC packaging, and 3V to 5.5V supply range. However, operating temperature is limited to 0°C to 70°C (versus -40°C to 85°C for the original part), and Moisture Sensitivity Level is MSL 3 instead of MSL 1. Use this part only in applications where the commercial temperature range is acceptable.

Q: What are the implications of higher receiver hysteresis (500mV vs. 300mV)?

A: Receiver hysteresis determines the voltage difference between rising and falling edge thresholds. Higher hysteresis (500mV) provides improved noise immunity and reduced susceptibility to signal oscillation, particularly beneficial in noisy environments. Lower hysteresis (300mV) provides faster response to marginal signal transitions. Selection depends on your application's noise environment and signal integrity requirements.

Q: Can I use MAX3232ECWE+ for applications requiring -40°C to 85°C operation?

A: No. MAX3232ECWE+ is rated for 0°C to 70°C operation only. For extended temperature range applications, use MAX3232EEWE+, MAX3232EEWE+T, or MAX3232EIDWR, which all support -40°C to 85°C operation.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape packaging supplies components on continuous tape that is cut to length, suitable for lower-volume orders and manual assembly. Tape & Reel packaging supplies components on continuous tape wound on a reel, optimized for high-volume automated assembly. Both formats use identical 16-SOIC component packages; the difference is in the carrier format and quantity per reel.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed in this reference maintain ROHS3 compliance and REACH Unaffected status, consistent with the original TRS3232EIDWR part.

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