TRS3232ECDB RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS3232ECDB is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-SSOP package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The 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 requiring full RS232 protocol compliance.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS3232ECDB
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	250kbps
Voltage Supply Range	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	16-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
Receiver Hysteresis	300mV
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the TRS3232ECDB is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Protocol: RS232 full-duplex transceiver with 2/2 driver/receiver configuration
Voltage Supply Range: 3V ~ 5.5V (must encompass or match the original range)
Package Type: 16-SSOP or 16-TSSOP (both are compatible surface-mount packages with identical pinout)
Data Rate: 250kbps minimum
Mounting Type: Surface Mount

Acceptable Variations:

Receiver Hysteresis: 300mV or 500mV (both acceptable for RS232 applications)
Operating Temperature: Extended ranges (-40°C ~ 85°C) are acceptable upgrades from the original 0°C ~ 70°C
Product Status: Active parts are preferred over obsolete parts for production continuity
Packaging Format: Tube, Cut Tape (CT) & Digi-Reel®, or Tape & Reel (TR) are all acceptable

Substitutes are grouped into two categories: direct package equivalents (16-SSOP) and compatible package alternatives (16-TSSOP with identical electrical performance).

Parameter Comparison

Part Number	Manufacturer	Package	Drivers/Receivers	Data Rate	Voltage Supply	Operating Temp	Receiver Hysteresis	Product Status
TRS3232ECDB	Texas Instruments	16-SSOP	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	300mV	Obsolete
MAX3232EEAE+	Analog Devices Inc./Maxim Integrated	16-SSOP	2/2	250kbps	3V ~ 5.5V	-40°C ~ 85°C	500mV	Active
MAX3232EEAE+T	Analog Devices Inc./Maxim Integrated	16-SSOP	2/2	250kbps	3V ~ 5.5V	-40°C ~ 85°C	500mV	Active
SP3232EBEA-L/TR	MaxLinear, Inc.	16-SSOP	2/2	250kbps	3V ~ 5.5V	-40°C ~ 85°C	300mV	Active
ADM3232EARUZ	Analog Devices Inc.	16-TSSOP	2/2	460Kbps	3V ~ 5.5V	-40°C ~ 85°C	500mV	Active
ADM3232EARUZ-REEL7	Analog Devices Inc.	16-TSSOP	2/2	460Kbps	3V ~ 5.5V	-40°C ~ 85°C	500mV	Active
ICL3232CVZ	Renesas Electronics Corporation	16-TSSOP	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	300mV	Active
ICL3232CVZ-T	Renesas Electronics Corporation	16-TSSOP	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	300mV	Active
ICL3232ECAZ	Renesas Electronics Corporation	16-SSOP	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	500mV	Active
ICL3232ECAZ-T	Renesas Electronics Corporation	16-SSOP	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	500mV	Active
ICL3232ECV-16Z	Renesas Electronics Corporation	16-TSSOP	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	500mV	Active

Engineering Selection Recommendations

All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The TRS3232ECDB's obsolete status necessitates selection from active alternatives.

Direct Package Equivalents (16-SSOP): The MAX3232EEAE+ and MAX3232EEAE+T from Analog Devices Inc./Maxim Integrated provide identical electrical performance with extended operating temperature range (-40°C ~ 85°C). The SP3232EBEA-L/TR from MaxLinear, Inc. matches the original 300mV receiver hysteresis specification while offering active product status and extended temperature range. The ICL3232ECAZ and ICL3232ECAZ-T from Renesas Electronics Corporation maintain the same package footprint with 500mV receiver hysteresis and active status.

Compatible Package Alternatives (16-TSSOP): The ADM3232EARUZ and ADM3232EARUZ-REEL7 from Analog Devices Inc. offer enhanced data rate performance (460Kbps versus 250Kbps) in a narrower 16-TSSOP package. The ICL3232CVZ, ICL3232CVZ-T, and ICL3232ECV-16Z from Renesas Electronics Corporation provide 16-TSSOP alternatives with matching electrical specifications. The 16-TSSOP package (0.173", 4.40mm width) is mechanically compatible with 16-SSOP footprints in most PCB designs, though layout verification is required.

Frequently Asked Questions (FAQ)

Q: Can I use a 16-TSSOP package substitute in place of the original 16-SSOP? A: Yes. Both 16-SSOP and 16-TSSOP packages share identical pinout and electrical characteristics. The 16-TSSOP is a narrower variant (4.40mm versus 5.30mm width) and is mechanically compatible with standard 16-SSOP footprints. PCB layout verification is recommended to confirm clearance and solder joint integrity.

Q: What is the difference between 300mV and 500mV receiver hysteresis? A: Receiver hysteresis determines the voltage differential between logic state transitions. Both 300mV and 500mV are valid for RS232 applications. The 500mV specification provides greater noise immunity in electrically noisy environments, while 300mV matches the original TRS3232ECDB specification.

Q: Are all substitute parts pin-compatible with the TRS3232ECDB? A: Yes. All listed substitutes maintain the same 16-pin configuration and pinout as the original part. No PCB redesign is required for pin-level compatibility.

Q: Why do some substitutes have higher data rates (460Kbps versus 250Kbps)? A: Higher data rate specifications indicate enhanced performance capability. Parts rated for 460Kbps are backward-compatible with 250Kbps applications and provide design margin for future upgrades without requiring component replacement.

Q: What is the significance of extended operating temperature ranges (-40°C ~ 85°C)? A: Extended temperature ranges indicate broader environmental suitability. Substitutes with -40°C ~ 85°C ratings are suitable for industrial and automotive applications, whereas the original 0°C ~ 70°C range is limited to commercial temperature environments.

Q: Do all substitutes meet the same compliance standards as the original part? A: Yes. All listed substitutes are ROHS3 compliant and REACH unaffected, matching the regulatory compliance of the original TRS3232ECDB.

Q: What packaging formats are available for these substitutes? A: Substitutes are available in Tube, Cut Tape (CT) & Digi-Reel®, and Tape & Reel (TR) formats. Selection depends on production volume and assembly process requirements. Tube packaging is suitable for low-volume applications, while Tape & Reel is standard for high-volume automated assembly.

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