TRSF3232IPWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRSF3232IPWR is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-TSSOP surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The TRSF3232IPWR operates across a 3V to 5.5V supply range with a 1Mbps data rate and 300mV receiver hysteresis, suitable for legacy serial communication applications requiring full RS232 protocol compliance.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRSF3232IPWR
Manufacturer	Texas Instruments
Product Status	Obsolete
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	300 mV
Data Rate	1Mbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package / Case	16-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the TRSF3232IPWR is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Package / Case: 16-TSSOP
Voltage - Supply: 3V ~ 5.5V
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount

Secondary Compatibility Factors:

Receiver Hysteresis: 300 mV (preferred) or 500 mV (acceptable with design verification)
Data Rate: 1Mbps (preferred) or 250kbps (acceptable for lower-speed applications)
Product Status: Active status preferred for long-term availability

Substitute parts are categorized as parametric equivalents (matching all primary criteria) or direct substitutes (functionally compatible with minor parameter variations). Parts with reduced driver/receiver count (1/1 configuration) are listed as parametric equivalents only and require circuit redesign validation.

Parameter Comparison

Part Number	Manufacturer	Drivers/Receivers	Receiver Hysteresis	Data Rate	Product Status	Packaging	Inventory (Pcs)
TRSF3232IPWR	Texas Instruments	2/2	300 mV	1Mbps	Obsolete	16-TSSOP	12,900
SN65C3232EPWR	Texas Instruments	2/2	300 mV	1Mbps	Active	16-TSSOP	25,300
SN65C3232PWR	Texas Instruments	2/2	300 mV	1Mbps	Active	16-TSSOP	44,289
TRSF3232EIPWR	Texas Instruments	2/2	300 mV	1Mbps	Active	16-TSSOP	19,200
MAX3232EEUE+	Analog Devices Inc./Maxim Integrated	2/2	500 mV	250kbps	Active	16-TSSOP	2,100
MAX3232EEUE+T	Analog Devices Inc./Maxim Integrated	2/2	500 mV	250kbps	Active	16-TSSOP	30,300
SP3232EBEY-L/TR	MaxLinear, Inc.	2/2	300 mV	250kbps	Active	16-TSSOP	30,194
ST3232EBTR	STMicroelectronics	2/2	500 mV	250kbps	Active	16-TSSOP	129,821
SP3220EUEY-L/TR	MaxLinear, Inc.	1/1	300 mV	1Mbps	Active	16-TSSOP	3,594
SP3232EUEY-L/TR	MaxLinear, Inc.	2/2	300 mV	1Mbps	Active	16-TSSOP	4,778

Engineering Selection Recommendations

Preferred Substitutes (Full Parameter Alignment):

SN65C3232PWR and SN65C3232EPWR from Texas Instruments provide identical electrical specifications to the TRSF3232IPWR with active product status. Both maintain 2/2 driver/receiver configuration, 300mV receiver hysteresis, 1Mbps data rate, and 16-TSSOP packaging. SN65C3232PWR offers the highest inventory availability (44,289 units) and is the primary recommendation for direct replacement in production designs.

TRSF3232EIPWR maintains the same base product line as the original part with active status and equivalent specifications, providing continuity within the Texas Instruments TRSF3232 family.

Alternative Substitutes (Minor Parameter Variations):

SP3232EUEY-L/TR from MaxLinear, Inc. matches all primary specifications including 2/2 configuration, 300mV hysteresis, and 1Mbps data rate in 16-TSSOP packaging with active product status. Tape & Reel packaging differs from the original but maintains electrical compatibility.

SP3232EBEY-L/TR from MaxLinear, Inc. provides 2/2 configuration and 300mV hysteresis but operates at 250kbps data rate. This part is suitable for applications not requiring the full 1Mbps bandwidth.

MAX3232EEUE+T from Analog Devices Inc./Maxim Integrated offers 2/2 configuration in 16-TSSOP with active status but features 500mV receiver hysteresis and 250kbps data rate. Higher inventory availability (30,300 units) supports volume production requirements.

ST3232EBTR from STMicroelectronics provides the highest inventory level (129,821 units) with 2/2 configuration and 16-TSSOP packaging. The 500mV hysteresis and 250kbps data rate represent acceptable trade-offs for applications with relaxed timing requirements.

Limited Substitution (Reduced Functionality):

SP3220EUEY-L/TR from MaxLinear, Inc. features only 1/1 driver/receiver configuration, reducing channel capacity from the original 2/2 design. This part is suitable only for single-channel RS232 applications and requires circuit redesign.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and -40°C to 85°C operating temperature range consistent with the original specification.

Frequently Asked Questions (FAQ)

Q: Can I use SN65C3232PWR as a direct replacement for TRSF3232IPWR?

A: Yes. SN65C3232PWR is a parametric equivalent with identical electrical specifications: 2/2 full-duplex RS232 transceiver, 300mV receiver hysteresis, 1Mbps data rate, 3V to 5.5V supply, and 16-TSSOP packaging. The part is manufactured by Texas Instruments with active product status, ensuring long-term availability.

Q: What is the difference between the MAX3232EEUE+T and the original TRSF3232IPWR?

A: MAX3232EEUE+T maintains the 2/2 driver/receiver configuration and 16-TSSOP package but operates at 250kbps data rate (versus 1Mbps) and features 500mV receiver hysteresis (versus 300mV). These differences are acceptable for lower-speed serial communication applications. The part is manufactured by Analog Devices Inc./Maxim Integrated with active status.

Q: Why is SP3220EUEY-L/TR listed as a parametric equivalent rather than a direct substitute?

A: SP3220EUEY-L/TR features a 1/1 driver/receiver configuration compared to the original 2/2 design. This reduced channel capacity requires circuit redesign to accommodate single-channel operation. The part is otherwise compatible in terms of protocol, package, and electrical specifications.

Q: Does packaging type affect substitution compatibility?

A: Packaging type (Cut Tape, Tape & Reel, Tube) does not affect electrical compatibility or PCB mounting. All listed substitutes use 16-TSSOP surface mount packages with identical pin configurations. Packaging selection depends on procurement and assembly process requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance or equivalent RoHS certification, consistent with the original TRSF3232IPWR specification.

Q: Which substitute offers the best inventory availability?

A: ST3232EBTR from STMicroelectronics provides the highest inventory level at 129,821 units. This part maintains 2/2 configuration and 16-TSSOP packaging with 500mV hysteresis and 250kbps data rate, suitable for applications with relaxed timing requirements.

Q: Can I mix different substitute parts in the same production run?

A: Mixing substitute parts with different receiver hysteresis values (300mV versus 500mV) or data rates (1Mbps versus 250kbps) is not recommended within the same design without circuit validation. Maintain consistency within a single design revision to ensure predictable system performance.

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