TRS3232EIDB RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS3232EIDB is a full-duplex RS232 transceiver manufactured by Texas Instruments, configured with 2 drivers and 2 receivers in a 16-SSOP surface mount package. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility across supply voltage, data rate, operating temperature, and mechanical packaging specifications to ensure direct replacement capability.

Key Parameters

Parameter	TRS3232EIDB Specification
Manufacturer	Texas Instruments
Part Number	TRS3232EIDB
Product Status	Obsolete
Type	Transceiver
Protocol	RS232
Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	300 mV
Data Rate	250 kbps
Supply Voltage	3V to 5.5V
Operating Temperature	-40°C to 85°C
Package Type	16-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

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

Primary Compatibility Criteria:

Protocol: RS232
Drivers/Receivers Configuration: 2/2
Duplex Mode: Full
Supply Voltage Range: 3V to 5.5V (minimum overlap required)
Operating Temperature Range: Must support -40°C to 85°C or equivalent industrial range
Package Type: 16-SSOP or 16-TSSOP (both 16-pin surface mount variants)
RoHS3 Compliance: Required
MSL Rating: 1 or 3 acceptable for industrial applications

Secondary Parameters Affecting Substitution:

Receiver Hysteresis: 300 mV or 500 mV (both acceptable for RS232 standard compliance)
Data Rate: 250 kbps or higher (backward compatible)
Product Status: Active status preferred for long-term availability

Substitute parts are grouped into two categories based on package compatibility: 16-SSOP direct replacements and 16-TSSOP alternatives requiring PCB layout verification.

Parameter Comparison

Part Number	Manufacturer	Product Status	Drivers/Receivers	Data Rate	Receiver Hysteresis	Supply Voltage	Operating Temperature	Package Type	RoHS Status	MSL Rating
TRS3232EIDB	Texas Instruments	Obsolete	2/2	250 kbps	300 mV	3V–5.5V	-40°C to 85°C	16-SSOP	ROHS3	1
MAX3232EIDB	Texas Instruments	Obsolete	2/2	250 kbps	300 mV	3V–5.5V	-40°C to 85°C	16-SSOP	ROHS3	1
ADM3232EARUZ	Analog Devices Inc.	Active	2/2	460 kbps	500 mV	3V–5.5V	-40°C to 85°C	16-TSSOP	ROHS3	1
ADM3232EARUZ-REEL7	Analog Devices Inc.	Active	2/2	460 kbps	500 mV	3V–5.5V	-40°C to 85°C	16-TSSOP	ROHS3	1
ICL3232CVZ	Renesas Electronics Corporation	Active	2/2	250 kbps	300 mV	3V–5.5V	0°C to 70°C	16-TSSOP	ROHS3	3
ICL3232CVZ-T	Renesas Electronics Corporation	Active	2/2	250 kbps	300 mV	3V–5.5V	0°C to 70°C	16-TSSOP	ROHS3	3
ICL3232ECAZ	Renesas Electronics Corporation	Active	2/2	250 kbps	500 mV	3V–5.5V	0°C to 70°C	16-SSOP	ROHS3	3
ICL3232ECAZ-T	Renesas Electronics Corporation	Active	2/2	250 kbps	500 mV	3V–5.5V	0°C to 70°C	16-SSOP	ROHS3	3
ICL3232ECV-16Z	Renesas Electronics Corporation	Active	2/2	250 kbps	500 mV	3V–5.5V	0°C to 70°C	16-TSSOP	ROHS3	3
ICL3232EIAZ	Renesas Electronics Corporation	Active	2/2	250 kbps	500 mV	3V–5.5V	-40°C to 85°C	16-SSOP	ROHS3	3
ICL3232EIAZ-T	Renesas Electronics Corporation	Active	2/2	250 kbps	500 mV	3V–5.5V	-40°C to 85°C	16-SSOP	ROHS3	3

Engineering Selection Recommendations

Direct Package Replacement (16-SSOP):

MAX3232EIDB is the closest electrical equivalent to TRS3232EIDB, sharing identical electrical specifications, package type, and operating temperature range. Both components are obsolete; however, MAX3232EIDB maintains higher inventory availability (2200 pcs vs. 2100 pcs).

ICL3232EIAZ and ICL3232EIAZ-T (Renesas) provide active product status with matching 16-SSOP packaging and -40°C to 85°C operating temperature range. These parts feature 500 mV receiver hysteresis versus the original 300 mV specification, which remains within RS232 standard tolerance. ICL3232EIAZ-T offers superior inventory depth (30,100 pcs) in cut tape format.

ICL3232ECAZ and ICL3232ECAZ-T are alternative 16-SSOP options with active status but limited to 0°C to 70°C operating temperature, unsuitable for applications requiring the full -40°C to 85°C industrial range.

Alternative Package (16-TSSOP):

ADM3232EARUZ and ADM3232EARUZ-REEL7 (Analog Devices) deliver active product status with enhanced data rate (460 kbps) and full industrial temperature support (-40°C to 85°C). The 16-TSSOP package requires PCB layout modification but provides superior long-term availability (30,400 pcs for REEL7 variant).

ICL3232CVZ and ICL3232CVZ-T (Renesas) offer 16-TSSOP packaging with active status but operate only to 0°C to 70°C, limiting suitability for extended temperature applications.

ICL3232ECV-16Z (Renesas) provides 16-TSSOP packaging with active status but shares the 0°C to 70°C temperature limitation.

Compliance Status:

All substitute parts maintain ROHS3 compliance and EAR99 export classification matching the original component. MSL ratings of 1 or 3 are both acceptable for industrial deployment.

Frequently Asked Questions (FAQ)

Q: Can MAX3232EIDB directly replace TRS3232EIDB without PCB modification?

A: Yes. MAX3232EIDB shares identical electrical specifications, 16-SSOP package dimensions, and operating temperature range (-40°C to 85°C). No PCB layout changes are required for direct substitution.

Q: What is the difference between 16-SSOP and 16-TSSOP packages?

A: Both are 16-pin surface mount packages. 16-SSOP measures 0.209" (5.30mm) width; 16-TSSOP measures 0.173" (4.40mm) width. Footprint differences require PCB layout verification before substituting TSSOP variants for SSOP originals.

Q: Why do some substitutes have 500 mV receiver hysteresis instead of 300 mV?

A: RS232 standard compliance permits receiver hysteresis between 300 mV and 500 mV. Both values ensure reliable signal detection within the RS232 voltage envelope. The 500 mV specification provides additional noise margin in electrically noisy environments.

Q: Are Renesas ICL3232 parts suitable for -40°C to 85°C applications?

A: Only ICL3232EIAZ and ICL3232EIAZ-T support the full -40°C to 85°C range. ICL3232CVZ, ICL3232CVZ-T, ICL3232ECAZ, ICL3232ECAZ-T, and ICL3232ECV-16Z are limited to 0°C to 70°C operation and are unsuitable for extended industrial temperature requirements.

Q: What is the advantage of ADM3232EARUZ over TRS3232EIDB?

A: ADM3232EARUZ offers active product status (versus obsolete), higher data rate (460 kbps versus 250 kbps), and superior long-term availability. The 16-TSSOP package requires PCB footprint modification but provides future-proof component sourcing.

Q: Do all substitute parts carry ROHS3 compliance?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original TRS3232EIDB environmental certifications.

Q: Which substitute offers the highest inventory availability?

A: ADM3232EARUZ-REEL7 (Analog Devices) and ICL3232EIAZ-T (Renesas) both provide 30,000+ piece inventory. ICL3232EIAZ-T maintains 16-SSOP packaging compatibility; ADM3232EARUZ-REEL7 requires 16-TSSOP footprint accommodation.

Q: Can I use ICL3232CVZ in a design requiring -40°C to 85°C operation?

A: No. ICL3232CVZ operates only to 0°C to 70°C. For full industrial temperature range, select ICL3232EIAZ, ICL3232EIAZ-T, ADM3232EARUZ, or ADM3232EARUZ-REEL7.

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