TRS3232ECD Equivalent & Substitute Parts

Part Overview

The TRS3232ECD is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The TRS3232ECD operates across a 3V to 5.5V supply voltage range with a 250kbps data rate and 300mV receiver hysteresis, serving as a standard interface component for RS232 serial communication circuits.

Key Parameters

Parameter	TRS3232ECD
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	300 mV
Data Rate	250kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the TRS3232ECD is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Voltage Supply Range: 3V ~ 5.5V (minimum requirement)
Mounting Type: Surface Mount
Package Type: 16-SOIC or equivalent 16-pin surface mount package

Compatible Variation Parameters:

Data Rate: 250kbps or higher
Receiver Hysteresis: 300mV or 500mV (both acceptable)
Operating Temperature: Extended range (-40°C ~ 85°C) acceptable for 0°C ~ 70°C applications
Product Status: Active parts preferred over obsolete

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

Parametric Equivalent: MAX3232ECDG4 matches all critical parameters identically, including data rate and receiver hysteresis specifications.

Direct Manufacturer Alternative: SP3232EUCN-L provides identical electrical specifications with higher data rate capability (1Mbps) and active product status.

Upgrade Options: SP3232EBEN-L/TR, ST3232EBDR, ADM3232EARNZ, ADM3232EARNZ-REEL7, ICL3232CBNZ-T, ICL3232ECBNZ, ICL3232ECBNZ-T, and ICL3232EIBNZ offer extended operating temperature ranges or improved performance characteristics while maintaining core RS232 2/2 transceiver functionality.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Receiver Hysteresis	Supply Voltage	Operating Temp	Package	Product Status	MSL
TRS3232ECD	Texas Instruments	RS232	2/2	250kbps	300mV	3V ~ 5.5V	0°C ~ 70°C	16-SOIC	Obsolete	1
MAX3232ECDG4	Texas Instruments	RS232	2/2	250kbps	300mV	3V ~ 5.5V	0°C ~ 70°C	16-SOIC	Obsolete	1
SP3232EUCN-L	MaxLinear, Inc.	RS232	2/2	1Mbps	300mV	3V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	2
SP3232EBEN-L/TR	MaxLinear, Inc.	RS232	2/2	250kbps	300mV	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC	Active	2
ST3232EBDR	STMicroelectronics	RS232	2/2	250kbps	500mV	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC	Active	3
ADM3232EARNZ	UMW	RS232	2/2	235Kbps	300mV	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC	Active	1
ADM3232EARNZ-REEL7	Analog Devices Inc.	RS232	2/2	460Kbps	500mV	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC	Active	1
ICL3232CBNZ-T	Renesas Electronics Corporation	RS232	2/2	250kbps	300mV	3V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	3
ICL3232ECBNZ	Renesas Electronics Corporation	RS232	2/2	250kbps	500mV	3V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	3
ICL3232ECBNZ-T	Renesas Electronics Corporation	RS232	2/2	250kbps	500mV	3V ~ 5.5V	0°C ~ 70°C	16-SOIC	Active	3
ICL3232EIBNZ	Renesas Electronics Corporation	RS232	2/2	250kbps	500mV	3V ~ 5.5V	-40°C ~ 85°C	16-SOIC	Active	3

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): MAX3232ECDG4 provides parametric equivalence to the TRS3232ECD with matching electrical and thermal characteristics. Both parts are obsolete; however, MAX3232ECDG4 maintains higher inventory availability.

For Active Production (Recommended): SP3232EBEN-L/TR is the preferred substitute, offering active product status, extended operating temperature range (-40°C ~ 85°C), and identical data rate and receiver hysteresis specifications. This part provides long-term supply security and improved environmental performance.

For Extended Temperature Applications: ICL3232EIBNZ supports the full industrial temperature range (-40°C ~ 85°C) with active product status and ROHS3 compliance. The 500mV receiver hysteresis provides enhanced noise immunity compared to the original 300mV specification.

For High-Speed Applications: ADM3232EARNZ-REEL7 offers 460kbps data rate capability with active status and extended temperature range, suitable for applications requiring higher communication speeds while maintaining RS232 protocol compliance.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original TRS3232ECD.

Frequently Asked Questions (FAQ)

Q: Can I use MAX3232ECDG4 as a direct replacement for TRS3232ECD? A: Yes. MAX3232ECDG4 matches all critical electrical parameters: 2/2 RS232 transceiver, 250kbps data rate, 300mV receiver hysteresis, 3V to 5.5V supply voltage, and 16-SOIC package. Both parts are obsolete; however, MAX3232ECDG4 has higher current inventory.

Q: What is the difference between SP3232EUCN-L and SP3232EBEN-L/TR? A: SP3232EUCN-L operates at 0°C to 70°C with 1Mbps data rate and MSL 2 rating. SP3232EBEN-L/TR extends the operating temperature to -40°C to 85°C, maintains 250kbps data rate, and includes Cut Tape and Digi-Reel packaging options. Both are active products from MaxLinear.

Q: Why do some substitutes have 500mV receiver hysteresis instead of 300mV? A: Receiver hysteresis is a provided parameter that determines noise immunity. Parts with 500mV hysteresis (ST3232EBDR, ICL3232ECBNZ, ICL3232ECBNZ-T, ICL3232EIBNZ) offer enhanced noise rejection. This is a compatible variation that does not prevent substitution in RS232 2/2 transceiver applications.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original TRS3232ECD.

Q: Which substitute offers the best long-term availability? A: SP3232EBEN-L/TR is recommended for new designs. It is an active product with 35,386 units in stock, extended operating temperature range, and availability in both Cut Tape and Digi-Reel packaging formats.

Q: Can I use ICL3232EIBNZ in applications requiring 0°C to 70°C operation? A: Yes. ICL3232EIBNZ supports -40°C to 85°C operation, which encompasses the 0°C to 70°C range. The extended temperature capability does not restrict its use in narrower temperature applications.

Q: What is the difference between tube and cut tape packaging? A: Tube packaging (SP3232EUCN-L, ICL3232ECBNZ) is suitable for lower-volume applications. Cut Tape and Digi-Reel packaging (SP3232EBEN-L/TR, ST3232EBDR, ADM3232EARNZ, ADM3232EARNZ-REEL7, ICL3232CBNZ-T, ICL3232ECBNZ-T) supports automated assembly processes and higher-volume production.

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