TRSF3222CDB RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRSF3222CDB is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 20-SSOP surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The device operates across a 3V to 5.5V supply range with a 1Mbps data rate and 300mV receiver hysteresis, designed for serial communication interface applications requiring dual driver and receiver channels.

Substiute Parts

TRSF3222CDB

Texas InstrumentsIn Stock: 859TRSF3222CDB Datasheet

Current PartRFQ

MAX3222ECAP+

Analog Devices Inc./Maxim IntegratedIn Stock: 2079MAX3222ECAP+ Datasheet

DirectRFQ

MAX3222ECAP+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2908MAX3222ECAP+T Datasheet

DirectRFQ

ST3222ECPR

STMicroelectronicsIn Stock: 1441ST3222ECPR Datasheet

DirectRFQ

SP3222EBEA-L/TR

MaxLinear, Inc.In Stock: 3786SP3222EBEA-L/TR Datasheet

MFR RecommendedRFQ

SP3222ECA-L/TR

MaxLinear, Inc.In Stock: 22341SP3222ECA-L/TR Datasheet

MFR RecommendedRFQ

SP3222EEA-L/TR

MaxLinear, Inc.In Stock: 22464SP3222EEA-L/TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TRSF3222CDB is determined by the following mandatory parameters:

• Protocol: RS232
• Number of Drivers/Receivers: 2/2
• Duplex: Full
• Package / Case: 20-SSOP (0.209", 5.30mm Width)
• Voltage Supply Range: 3V ~ 5.5V
• Mounting Type: Surface Mount

All substitute parts listed meet these core electrical and mechanical requirements. Variations in receiver hysteresis (300mV vs 500mV), data rate (1Mbps vs 250Kbps vs 235Kbps), and operating temperature ranges do not prevent functional substitution in applications designed for the TRSF3222CDB, as these parameters remain within acceptable tolerances for RS232 serial communication.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are in active production status, eliminating obsolescence risk associated with the TRSF3222CDB. Selection among substitutes should be based on the following criteria:

For applications requiring maximum data rate compatibility: MAX3222ECAP+ and MAX3222ECAP+T maintain the 1Mbps specification of the original part while offering active product status and ROHS3 compliance. These parts are available in both tube and tape & reel packaging options.

For applications with extended temperature requirements: SP3222EBEA-L/TR and SP3222EEA-L/TR support operating temperatures from -40°C to 85°C, exceeding the original 0°C to 70°C range. Both parts maintain 300mV receiver hysteresis matching the TRSF3222CDB specification.

For standard industrial applications: SP3222ECA-L/TR and SP3222EEA-L/TR offer the highest inventory availability (22,300 and 22,400 units respectively) with active product status and RoHS compliance. These MaxLinear parts maintain the 300mV receiver hysteresis of the original design.

All substitute parts maintain ROHS3 or equivalent RoHS compliance and REACH unaffected status, ensuring regulatory alignment with modern manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can MAX3222ECAP+T replace TRSF3222CDB directly?

A: Yes. Both parts share identical electrical specifications for RS232 protocol, 2/2 driver/receiver configuration, full-duplex operation, 20-SSOP package, and 3V to 5.5V supply range. The MAX3222ECAP+T is in active production status, eliminating obsolescence concerns. The 500mV receiver hysteresis (versus 300mV in the original) remains within RS232 specification tolerances.

Q: What is the difference between SP3222ECA-L/TR and SP3222EEA-L/TR?

A: Both parts are manufactured by MaxLinear with identical electrical specifications (2/2 transceiver, RS232, 300mV hysteresis, 235Kbps data rate, 20-SSOP package). The primary difference is operating temperature range: SP3222ECA-L/TR operates 0°C to 70°C, while SP3222EEA-L/TR operates -40°C to 85°C. Select SP3222EEA-L/TR for applications requiring extended temperature performance.

Q: Are there packaging differences between substitute options?

A: Yes. MAX3222ECAP+ is supplied in tube packaging, while MAX3222ECAP+T, ST3222ECPR, SP3222EBEA-L/TR, SP3222ECA-L/TR, and SP3222EEA-L/TR are supplied in tape & reel format. Tube packaging is suitable for manual assembly; tape & reel is optimized for automated pick-and-place production. The TRSF3222CDB original part does not specify packaging format in the provided data.

Q: Does data rate variation affect substitution compatibility?

A: No. The TRSF3222CDB operates at 1Mbps, while ST3222ECPR, SP3222EBEA-L/TR, SP3222ECA-L/TR, and SP3222EEA-L/TR operate at 250Kbps or 235Kbps. All data rates exceed typical RS232 serial communication requirements (standard rates: 9600, 19200, 38400, 57600, 115200 baud). Lower data rate specifications do not prevent functional substitution in standard applications.

Q: Which substitute offers the best inventory availability?

A: SP3222ECA-L/TR and SP3222EEA-L/TR offer the highest inventory levels at 22,300 and 22,400 units respectively. MAX3222ECAP+T provides 2,879 units, SP3222EBEA-L/TR provides 3,756 units, and ST3222ECPR provides 1,417 units.