TRSF3221CPWRG4 Equivalent & Substitute Parts

Part Overview

The TRSF3221CPWRG4 is a full-duplex RS232 transceiver interface IC manufactured by Texas Instruments, housed in a 16-TSSOP surface mount package. This device operates across a 3V to 5.5V supply voltage range with a 1Mbps data rate and 500mV receiver hysteresis, designed for serial communication applications requiring RS232 protocol compliance.

The TRSF3221CPWRG4 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this interface transceiver.

Key Parameters

Parameter	Value
Protocol	RS232
Type	Transceiver
Number of Drivers/Receivers	1/1
Duplex	Full
Data Rate	1Mbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Receiver Hysteresis	500 mV
Mounting Type	Surface Mount
Package / Case	16-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TRSF3221CPWRG4 is determined by strict alignment across the following parameters: RS232 protocol compliance, full-duplex transceiver configuration with 1/1 driver/receiver count, 1Mbps data rate capability, 3V to 5.5V supply voltage range, 500mV receiver hysteresis, 0°C to 70°C operating temperature range, surface mount technology, 16-TSSOP package geometry, ROHS3 compliance, and MSL Level 1 rating.

All identified substitute parts meet these electrical and mechanical specifications without deviation. Substitution is based solely on parametric equivalence within the interface transceiver category.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Protocol	Drivers/Receivers	Data Rate	Supply Voltage	Operating Temperature	Package	RoHS Status	Inventory (Pcs)
TRSF3221CPWRG4	Texas Instruments	Obsolete	RS232	1/1	1Mbps	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	ROHS3 Compliant	852
SN75C3221PWR	Texas Instruments	Active	RS232	1/1	1Mbps	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	ROHS3 Compliant	18616
TRSF3221ECPWR	Texas Instruments	Active	RS232	1/1	1Mbps	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	ROHS3 Compliant	8083
MAX3227ECUE+T	Analog Devices Inc./Maxim Integrated	Active	RS232	1/1	1Mbps	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	ROHS3 Compliant	1014

Engineering Selection Recommendations

For applications currently using the obsolete TRSF3221CPWRG4, the following selection criteria apply:

Texas Instruments SN75C3221PWR offers the highest inventory availability (18,616 units) with active product status and identical parametric specifications. This part represents the primary substitution path for TRSF3221CPWRG4 replacement.

Texas Instruments TRSF3221ECPWR maintains the same base product family (TRSF3221) with active status and 8,083 units in stock, providing continuity within the original product line.

Analog Devices Inc./Maxim Integrated MAX3227ECUE+T delivers parametric equivalence with active product status and 1,014 units available, offering an alternative manufacturer source for RS232 transceiver functionality.

All three substitute parts carry ROHS3 compliance, MSL Level 1 rating, and identical electrical performance parameters. Selection should prioritize supply chain availability and lead time requirements specific to your procurement timeline.

Frequently Asked Questions (FAQ)

Q: Can SN75C3221PWR directly replace TRSF3221CPWRG4 in existing designs?

A: Yes. Both parts share identical RS232 protocol implementation, 1/1 transceiver configuration, 1Mbps data rate, 3V to 5.5V supply voltage range, 500mV receiver hysteresis, and 16-TSSOP package geometry. No design modifications are required.

Q: What is the difference between TRSF3221ECPWR and TRSF3221CPWRG4?

A: The TRSF3221ECPWR is the active production equivalent of the obsolete TRSF3221CPWRG4. Both share identical electrical specifications and package configuration. The primary difference is product status: TRSF3221ECPWR is currently manufactured, while TRSF3221CPWRG4 is obsolete.

Q: Is MAX3227ECUE+T compatible with designs using TRSF3221CPWRG4?

A: Yes. The MAX3227ECUE+T meets all parametric requirements: RS232 protocol, full-duplex 1/1 transceiver, 1Mbps data rate, 3V to 5.5V supply voltage, 500mV receiver hysteresis, and 16-TSSOP package. It represents a cross-manufacturer equivalent from Analog Devices Inc./Maxim Integrated.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 compliance and MSL Level 1 rating, matching the environmental and regulatory status of the original TRSF3221CPWRG4.

Q: Does packaging differ between substitute parts?

A: No. All substitute parts use identical 16-TSSOP surface mount packaging (0.173" width, 4.40mm). PCB footprints and assembly processes remain unchanged.

Q: Which substitute part offers the best supply availability?

A: SN75C3221PWR provides the highest inventory level at 18,616 units in stock, followed by TRSF3221ECPWR at 8,083 units and MAX3227ECUE+T at 1,014 units.

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