TRS3232CDG4 Equivalent & Substitute Parts

Part Overview

The TRS3232CDG4 is a 2/2 full-duplex RS232 transceiver IC manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This component is classified as obsolete, with 1138 units currently in stock. The part operates across a 3V to 5.5V supply voltage range and supports data rates up to 250 kbps with a receiver hysteresis of 300 mV. Due to its obsolete status, identifying equivalent and substitute parts is essential for ongoing design support, production continuity, and long-term component availability.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS3232CDG4
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	250 kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Receiver Hysteresis	300 mV
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the TRS3232CDG4 is determined by strict adherence to the following parameters:

Primary Substitution Criteria:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Package / Case: 16-SOIC (0.154", 3.90mm Width)
Voltage - Supply: 3V ~ 5.5V
Data Rate: 250 kbps (minimum)
Receiver Hysteresis: 300 mV or 500 mV (acceptable variance)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Substitution Categories:

Direct Manufacturer Substitutes maintain identical electrical specifications and package format, differing only in product status or packaging configuration.

Parametric Equivalents provide functionally equivalent performance with identical core electrical parameters but may originate from different manufacturers.

Upgrade Parts offer enhanced specifications such as extended operating temperature ranges (-40°C to 85°C versus 0°C to 70°C) or improved data rate performance while maintaining backward compatibility with the original pinout and package.

Manufacturer Recommended Alternatives are designated by component manufacturers as suitable replacements, with minor variations in receiver hysteresis or data rate that do not compromise system functionality.

Parameter Comparison

Part Number	Manufacturer	Product Status	Data Rate	Operating Temp	Receiver Hysteresis	Packaging	Inventory
TRS3232CDG4	Texas Instruments	Obsolete	250 kbps	0°C ~ 70°C	300 mV	Tube	1138 Pcs
TRS3232ECDR	Texas Instruments	Active	250 kbps	0°C ~ 70°C	300 mV	Cut Tape (CT) & Digi-Reel®	100398 Pcs
MAX3232ECDG4	Texas Instruments	Obsolete	250 kbps	0°C ~ 70°C	300 mV	Tube	1073 Pcs
SP3232EBEN-L/TR	MaxLinear, Inc.	Active	250 kbps	-40°C ~ 85°C	300 mV	Cut Tape (CT) & Digi-Reel®	35386 Pcs
ST3232EBDR	STMicroelectronics	Active	250 kbps	-40°C ~ 85°C	500 mV	Cut Tape (CT) & Digi-Reel®	17776 Pcs
ADM3232EARNZ	UMW	Active	235 kbps	-40°C ~ 85°C	300 mV	Cut Tape (CT) & Digi-Reel®	5648 Pcs
ADM3232EARNZ-REEL7	Analog Devices Inc.	Active	460 kbps	-40°C ~ 85°C	500 mV	Cut Tape (CT) & Digi-Reel®	15300 Pcs
ICL3232CBNZ-T	Renesas Electronics Corporation	Active	250 kbps	0°C ~ 70°C	300 mV	Cut Tape (CT) & Digi-Reel®	1321 Pcs
ICL3232ECBNZ	Renesas Electronics Corporation	Active	250 kbps	0°C ~ 70°C	500 mV	Tube	2342 Pcs
ICL3232ECBNZ-T	Renesas Electronics Corporation	Active	250 kbps	0°C ~ 70°C	500 mV	Cut Tape (CT) & Digi-Reel®	17795 Pcs
ICL3232EIBNZ	Renesas Electronics Corporation	Active	250 kbps	-40°C ~ 85°C	500 mV	Tube	2063 Pcs

Engineering Selection Recommendations

For Direct Replacement (Identical Operating Conditions):

TRS3232ECDR is the primary direct substitute, manufactured by Texas Instruments with active product status. It maintains identical electrical specifications (250 kbps data rate, 300 mV receiver hysteresis, 0°C to 70°C operating range) and 16-SOIC package format. The primary difference is packaging configuration (Cut Tape & Digi-Reel versus Tube) and significantly higher inventory availability (100,398 units).

For Extended Temperature Range Applications:

SP3232EBEN-L/TR (MaxLinear, Inc.) and ICL3232EIBNZ (Renesas Electronics Corporation) extend the operating temperature range to -40°C to 85°C while maintaining the 250 kbps data rate and 16-SOIC package. SP3232EBEN-L/TR offers superior inventory levels (35,386 units) and maintains 300 mV receiver hysteresis. ICL3232EIBNZ provides 500 mV receiver hysteresis with active product status.

For Enhanced Performance:

ADM3232EARNZ-REEL7 (Analog Devices Inc.) delivers superior data rate performance at 460 kbps with extended temperature range (-40°C to 85°C) and 500 mV receiver hysteresis. This part is suitable for applications requiring higher bandwidth while maintaining full backward compatibility with the 16-SOIC pinout.

For Cost-Optimized Selection:

ICL3232CBNZ-T (Renesas Electronics Corporation) provides an active, cost-effective alternative with identical electrical specifications to the original part (250 kbps, 300 mV hysteresis, 0°C to 70°C) and maintains the 16-SOIC package format with strong inventory availability (1,321 units).

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can TRS3232ECDR be used as a direct drop-in replacement for TRS3232CDG4?

A: Yes. TRS3232ECDR is manufactured by Texas Instruments and maintains identical electrical specifications, pinout, and 16-SOIC package format. The only differences are product status (Active versus Obsolete) and packaging configuration (Cut Tape & Digi-Reel versus Tube). No circuit modifications are required.

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

A: Receiver hysteresis defines the voltage differential required to switch the receiver output state. Higher hysteresis (500 mV) provides greater noise immunity in electrically noisy environments but may reduce sensitivity to weak input signals. Lower hysteresis (300 mV) offers faster response to marginal signal levels. Both values are acceptable for standard RS232 applications operating within specified voltage ranges.

Q: Why do some substitutes have higher data rates (460 kbps versus 250 kbps)?

A: Higher data rate specifications indicate enhanced performance capability. Parts rated for 460 kbps can operate at the original 250 kbps specification without degradation. This provides design margin and future-proofing for applications that may require higher bandwidth. No circuit modifications are necessary when using higher-rated parts.

Q: Are extended temperature range parts (−40°C to 85°C) compatible with designs specified for 0°C to 70°C?

A: Yes. Extended temperature range parts are fully backward compatible. They operate correctly across the narrower original temperature range and provide additional capability for applications requiring broader environmental tolerance. No design changes are required.

Q: What packaging options are available, and do they affect electrical performance?

A: Substitute parts are available in Tube, Cut Tape (CT), and Digi-Reel® packaging. These are logistics and handling configurations only. Electrical performance, pinout, and package footprint (16-SOIC) remain identical. Selection should be based on production assembly requirements and inventory management practices.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original TRS3232CDG4 component.

Q: Which substitute offers the best inventory availability?

A: TRS3232ECDR provides the highest inventory level at 100,398 units, followed by SP3232EBEN-L/TR at 35,386 units. Both are active products with immediate availability.

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