TRS3232CD Equivalent & Substitute Parts

Part Overview

The TRS3232CD is a 2/2 full-duplex RS232 transceiver IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and production continuity. The TRS3232CD operates across a 3V to 5.5V supply voltage range with a 250kbps data rate and 300mV receiver hysteresis, making it suitable for legacy RS232 communication applications requiring full-duplex bidirectional data transmission.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS3232CD
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	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the TRS3232CD is determined by strict equivalence across the following critical parameters:

Protocol: RS232 full-duplex transceiver
Driver/Receiver Configuration: 2/2 channels
Supply Voltage Range: 3V ~ 5.5V
Package Type: 16-SOIC surface mount
Data Rate: Minimum 250kbps
Receiver Hysteresis: 300mV or 500mV (both acceptable for RS232 applications)
RoHS Compliance: ROHS3 Compliant

Substitute parts are grouped into three categories based on product status and operational characteristics:

Direct Substitutes (Active Status): Parts with identical electrical specifications and active manufacturing status, suitable for immediate replacement.

Parametric Equivalents (Obsolete Status): Parts meeting all electrical requirements but with obsolete status, available from existing inventory.

Upgrade Options (Active Status, Extended Temperature Range): Parts with enhanced operating temperature ranges (-40°C to 85°C) and active production status, offering improved reliability for demanding applications.

Manufacturer Recommended Options (Active Status): Parts from alternative manufacturers meeting or exceeding electrical specifications with active production status.

Parameter Comparison

Part Number	Manufacturer	Product Status	Data Rate	Receiver Hysteresis	Operating Temperature	Packaging	Inventory
TRS3232CD	Texas Instruments	Obsolete	250kbps	300mV	0°C ~ 70°C	16-SOIC	953 Pcs
TRS3232ECDR	Texas Instruments	Active	250kbps	300mV	0°C ~ 70°C	16-SOIC (CT/Digi-Reel)	100,398 Pcs
MAX3232ECDG4	Texas Instruments	Obsolete	250kbps	300mV	0°C ~ 70°C	16-SOIC (Tube)	1,073 Pcs
SP3232EBEN-L/TR	MaxLinear, Inc.	Active	250kbps	300mV	-40°C ~ 85°C	16-SOIC (CT/Digi-Reel)	35,386 Pcs
ST3232EBDR	STMicroelectronics	Active	250kbps	500mV	-40°C ~ 85°C	16-SO (CT/Digi-Reel)	17,776 Pcs
ADM3232EARNZ	UMW	Active	235Kbps	300mV	-40°C ~ 85°C	16-SOP (CT/Digi-Reel)	5,648 Pcs
ADM3232EARNZ-REEL7	Analog Devices Inc.	Active	460Kbps	500mV	-40°C ~ 85°C	16-SOIC (CT/Digi-Reel)	15,300 Pcs
ICL3232CBNZ-T	Renesas Electronics	Active	250kbps	300mV	0°C ~ 70°C	16-SOIC (CT/Digi-Reel)	1,321 Pcs
ICL3232ECBNZ	Renesas Electronics	Active	250kbps	500mV	0°C ~ 70°C	16-SOIC (Tube)	2,342 Pcs
ICL3232ECBNZ-T	Renesas Electronics	Active	250kbps	500mV	0°C ~ 70°C	16-SOIC (CT/Digi-Reel)	17,795 Pcs
ICL3232EIBNZ	Renesas Electronics	Active	250kbps	500mV	-40°C ~ 85°C	16-SOIC (Tube)	2,063 Pcs

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): TRS3232ECDR is the primary direct substitute, manufactured by Texas Instruments with active product status. This part maintains identical electrical specifications to the TRS3232CD (250kbps data rate, 300mV receiver hysteresis, 0°C to 70°C operating range) and is available in high volume (100,398 units) in Cut Tape and Digi-Reel packaging formats.

For Extended Temperature Range Applications: SP3232EBEN-L/TR (MaxLinear) and ICL3232EIBNZ (Renesas) provide -40°C to 85°C operating temperature ranges while maintaining 250kbps data rate and 300mV/500mV receiver hysteresis specifications. Both are active products with substantial inventory availability.

For Enhanced Data Rate Performance: ADM3232EARNZ-REEL7 (Analog Devices) offers 460kbps data rate capability, exceeding the TRS3232CD specification, with active product status and -40°C to 85°C operating temperature range.

For Compliance and Certification: All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching the TRS3232CD regulatory profile.

Frequently Asked Questions (FAQ)

Q: Can TRS3232ECDR be used as a direct replacement for TRS3232CD? A: Yes. TRS3232ECDR is manufactured by Texas Instruments and maintains identical electrical specifications: 2/2 full-duplex RS232 transceiver, 250kbps data rate, 300mV receiver hysteresis, 3V to 5.5V supply voltage, and 16-SOIC package. The primary difference is active product status versus obsolete status.

Q: What is the difference between 300mV and 500mV receiver hysteresis? A: Receiver hysteresis determines the voltage differential required for input signal transitions. Both 300mV and 500mV hysteresis values are acceptable for RS232 applications and do not affect functional compatibility. Higher hysteresis (500mV) provides improved noise immunity in electrically noisy environments.

Q: Are there temperature range limitations when substituting the TRS3232CD? A: The TRS3232CD operates 0°C to 70°C. Substitute parts with extended temperature ranges (-40°C to 85°C) are fully backward compatible and can be used in applications requiring the original temperature specification. Extended range parts are suitable for industrial and automotive applications.

Q: Does package type affect substitution compatibility? A: All listed substitutes use 16-SOIC or equivalent surface mount packages (16-SO, 16-SOP) with identical 0.154" (3.90mm) width. These packages are mechanically and electrically interchangeable on standard PCB layouts. Packaging format (Tube, Cut Tape, Digi-Reel) affects handling and supply chain logistics but not electrical performance.

Q: What is the significance of "Active" versus "Obsolete" product status? A: Active products are in current production with guaranteed long-term availability. Obsolete products are no longer manufactured and available only from existing inventory. For new designs or long-term production, active status parts are recommended.

Q: Can ADM3232EARNZ-REEL7 with 460kbps data rate be used in place of TRS3232CD? A: Yes. The ADM3232EARNZ-REEL7 exceeds the TRS3232CD data rate specification (460kbps versus 250kbps) and maintains full RS232 2/2 transceiver functionality. Higher data rate capability is backward compatible with applications designed for 250kbps operation.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching the TRS3232CD regulatory requirements.

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