TRSF3232ECDR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRSF3232ECDR is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-SOIC surface mount package. This interface IC operates across a 3V to 5.5V supply range with a 1 Mbps data rate and 300 mV receiver hysteresis. The part is currently active in production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit functional alternatives with compatible electrical and mechanical specifications.

Key Parameters

Parameter	Value
Transceiver Type	2/2 Full-Duplex RS232
Data Rate	1 Mbps
Supply Voltage Range	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Receiver Hysteresis	300 mV
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TRSF3232ECDR is determined by the following critical parameters:

Primary Substitution Criteria:

RS232 protocol with 2/2 full-duplex transceiver configuration
16-SOIC package with 0.154" (3.90mm) width
Supply voltage range of 3V to 5.5V
Surface mount mounting type
ROHS3 compliance

Secondary Compatibility Factors:

Data rate: 1 Mbps (main part) vs. 250 kbps (substitute parts) — lower data rates are functionally compatible in applications not requiring maximum throughput
Receiver hysteresis: 300 mV (main part) vs. 500 mV (some substitutes) — higher hysteresis provides improved noise immunity
Operating temperature: 0°C to 70°C (main part) vs. -40°C to 85°C (extended range substitutes) — extended range parts are backward compatible
Packaging format: Cut Tape (CT) & Digi-Reel vs. Tube vs. Tape & Reel (TR) — packaging affects handling and storage but does not impact electrical function

Substitutes are grouped by manufacturer and product status to facilitate sourcing decisions based on availability and supply chain stability.

Parameter Comparison

Part Number	Manufacturer	Product Status	Data Rate	Receiver Hysteresis	Operating Temperature	Packaging	Inventory
TRSF3232ECDR	Texas Instruments	Active	1 Mbps	300 mV	0°C ~ 70°C	Cut Tape & Digi-Reel	4666 Pcs
SN75C3232DR	Texas Instruments	Active	1 Mbps	300 mV	0°C ~ 70°C	Tape & Reel	6600 Pcs
SN75C3232EDR	Texas Instruments	Obsolete	1 Mbps	300 mV	0°C ~ 70°C	Cut Tape & Digi-Reel	2580 Pcs
SP3232EUCN-L	MaxLinear, Inc.	Active	1 Mbps	300 mV	0°C ~ 70°C	Tube	1405 Pcs
ICL3232CBNZ	Renesas Electronics	Active	250 kbps	300 mV	0°C ~ 70°C	Tube	9884 Pcs
ICL3232CBNZ-T	Renesas Electronics	Active	250 kbps	300 mV	0°C ~ 70°C	Cut Tape & Digi-Reel	1321 Pcs
ICL3232ECBNZ	Renesas Electronics	Active	250 kbps	500 mV	0°C ~ 70°C	Tube	2342 Pcs
ICL3232ECBNZ-T	Renesas Electronics	Active	250 kbps	500 mV	0°C ~ 70°C	Cut Tape & Digi-Reel	17795 Pcs
ICL3232EIBNZ	Renesas Electronics	Active	250 kbps	500 mV	-40°C ~ 85°C	Tube	2063 Pcs
ICL3232EIBNZ-T	Renesas Electronics	Active	250 kbps	500 mV	-40°C ~ 85°C	Cut Tape & Digi-Reel	35200 Pcs
ICL3232IBNZ	Renesas Electronics	Active	250 kbps	300 mV	-40°C ~ 85°C	Tube	1364 Pcs

Engineering Selection Recommendations

Tier 1 — Direct Parametric Equivalents (Recommended for New Designs)

SN75C3232DR and SP3232EUCN-L maintain identical electrical specifications to the TRSF3232ECDR with 1 Mbps data rate and 300 mV receiver hysteresis. Both are active products with ROHS3 compliance. SN75C3232DR offers the highest inventory availability (6600 pcs) and is manufactured by Texas Instruments, matching the original supplier. SP3232EUCN-L is supplied by MaxLinear with adequate stock (1405 pcs) and represents an alternative source for supply chain diversification.

Tier 2 — Functional Equivalents with Reduced Data Rate (Applications ≤250 kbps)

ICL3232CBNZ, ICL3232CBNZ-T, ICL3232ECBNZ, ICL3232ECBNZ-T, ICL3232EIBNZ, ICL3232EIBNZ-T, and ICL3232IBNZ are manufactured by Renesas Electronics and operate at 250 kbps. These parts are suitable for applications where the communication protocol does not require 1 Mbps throughput. All are active products with ROHS3 compliance.

ICL3232ECBNZ-T and ICL3232EIBNZ-T offer the highest inventory levels (17795 pcs and 35200 pcs respectively) and are packaged in Cut Tape & Digi-Reel format, matching the original part's packaging preference. ICL3232EIBNZ and ICL3232EIBNZ-T support extended operating temperature range (-40°C to 85°C), providing backward compatibility with the standard 0°C to 70°C range.

Tier 3 — Obsolete Status (Not Recommended for New Designs)

SN75C3232EDR is marked as obsolete and should not be selected for new product designs despite adequate inventory (2580 pcs). This part is suitable only for legacy system maintenance or repair applications where the original part number must be maintained.

Frequently Asked Questions (FAQ)

Q: Can I substitute a 250 kbps part for the 1 Mbps TRSF3232ECDR?

A: Yes, if your application operates at or below 250 kbps. The lower data rate specification does not prevent operation at reduced speeds. Verify that your RS232 communication protocol does not require the full 1 Mbps capability before making this substitution.

Q: What is the difference between 300 mV and 500 mV receiver hysteresis?

A: Receiver hysteresis determines the voltage difference between the rising and falling threshold levels. Higher hysteresis (500 mV) provides improved noise immunity in electrically noisy environments. Both values are compatible with standard RS232 signal levels and do not affect pin-to-pin compatibility.

Q: Are Cut Tape & Digi-Reel and Tube packaging electrically equivalent?

A: Yes. Packaging format affects handling, storage, and automated assembly processes but does not impact electrical performance or pin compatibility. Select packaging based on your manufacturing process requirements.

Q: Can I use an extended temperature range part (-40°C to 85°C) in place of the standard range part (0°C to 70°C)?

A: Yes. Extended temperature range parts are backward compatible with standard temperature applications. The part will operate correctly within the standard 0°C to 70°C range and provide additional capability for wider temperature environments.

Q: Why is SN75C3232EDR marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support. While inventory may remain available, new designs should not incorporate obsolete parts due to uncertain long-term availability and lack of manufacturer support.

Q: Which substitute offers the best supply chain stability?

A: SN75C3232DR (Texas Instruments, 6600 pcs) and ICL3232EIBNZ-T (Renesas Electronics, 35200 pcs) offer the highest inventory levels and active product status, providing the strongest supply chain position for both immediate and future requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message