TRS3222ECDB Equivalent & Substitute Parts

Part Overview

The TRS3222ECDB is a 2/2 transceiver full RS232 interface IC manufactured by Texas Instruments in a 20-SSOP surface mount package. This device operates across a 3V to 5.5V supply voltage range with a 500 kbps data rate and 300 mV receiver hysteresis. The part is currently in Last Time Buy status, indicating end-of-life production. Equivalent and substitute parts are necessary to ensure design continuity and long-term component availability for new production runs and legacy system maintenance.

Key Parameters

Parameter	TRS3222ECDB
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	500 kbps
Voltage - Supply	3V ~ 5.5V
Receiver Hysteresis	300 mV
Operating Temperature	0°C ~ 70°C
Package / Case	20-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TRS3222ECDB is determined by strict equivalence in the following critical parameters:

Protocol & Functionality: RS232 transceiver with 2/2 driver/receiver configuration and full duplex operation
Package Compatibility: 20-SSOP surface mount package (0.209", 5.30mm width) for direct PCB footprint compatibility
Electrical Specifications: 3V to 5.5V supply voltage range, 500 kbps data rate capability, and 300 mV receiver hysteresis
Compliance: ROHS3 compliance and REACH unaffected status

Substitute parts are grouped into two categories:

Direct Equivalents (Same Package - 20-SSOP): Parts maintaining identical 20-SSOP packaging with matching electrical performance specifications.

Package Variant Equivalents (20-TSSOP): Parts with functionally equivalent specifications but in the 20-TSSOP package (0.173", 4.40mm width), requiring PCB redesign for footprint accommodation.

Parameter Comparison

Part Number	Manufacturer	Package	Data Rate	Receiver Hysteresis	Operating Temperature	Product Status	Packaging Type
TRS3222ECDB	Texas Instruments	20-SSOP	500 kbps	300 mV	0°C ~ 70°C	Last Time Buy	Tube
MAX3222EIDBR	Texas Instruments	20-SSOP	500 kbps	300 mV	-40°C ~ 85°C	Active	Cut Tape & Digi-Reel
ICL3222ECAZ	Renesas Electronics	20-SSOP	250 kbps	500 mV	0°C ~ 70°C	Active	Tube
ICL3222ECAZ-T	Renesas Electronics	20-SSOP	250 kbps	500 mV	0°C ~ 70°C	Active	Tape & Reel
ICL3222EIAZ	Renesas Electronics	20-SSOP	250 kbps	500 mV	-40°C ~ 85°C	Active	Tube
ICL3222EIAZ-T	Renesas Electronics	20-SSOP	250 kbps	500 mV	-40°C ~ 85°C	Active	Tape & Reel
ICL3222CVZ	Renesas Electronics	20-TSSOP	250 kbps	300 mV	0°C ~ 70°C	Active	Tube
ICL3222CVZ-T	Renesas Electronics	20-TSSOP	250 kbps	300 mV	0°C ~ 70°C	Active	Tape & Reel
ICL3222ECVZ	Renesas Electronics	20-TSSOP	250 kbps	500 mV	0°C ~ 70°C	Active	Tube
ICL3222ECVZ-T	Renesas Electronics	20-TSSOP	250 kbps	500 mV	0°C ~ 70°C	Active	Tape & Reel
ICL3222EIVZ	Renesas Electronics	20-TSSOP	250 kbps	500 mV	-40°C ~ 85°C	Active	Tube

Engineering Selection Recommendations

For Direct PCB Compatibility (20-SSOP Package):

MAX3222EIDBR is the primary substitute, offering identical 20-SSOP packaging, matching 500 kbps data rate, and 300 mV receiver hysteresis. This part extends the operating temperature range to -40°C to 85°C and maintains Active product status with established supply availability.

ICL3222ECAZ and ICL3222ECAZ-T provide 20-SSOP package compatibility with Active product status. These Renesas parts operate at 250 kbps data rate with 500 mV receiver hysteresis, suitable for applications where reduced data rate and increased hysteresis margin are acceptable within the 0°C to 70°C temperature range.

ICL3222EIAZ and ICL3222EIAZ-T extend the operating temperature to -40°C to 85°C while maintaining 20-SSOP packaging, offering temperature-extended operation for industrial applications.

For Package Variant Applications (20-TSSOP Package):

ICL3222CVZ and ICL3222CVZ-T provide 20-TSSOP packaging with 300 mV receiver hysteresis matching the original part, operating at 250 kbps within the 0°C to 70°C range. These require PCB redesign due to package footprint change.

ICL3222ECVZ and ICL3222ECVZ-T offer 20-TSSOP packaging with 500 mV receiver hysteresis for applications requiring increased noise margin.

ICL3222EIVZ provides the widest operating temperature range (-40°C to 85°C) in 20-TSSOP packaging with 500 mV receiver hysteresis.

All substitute parts maintain ROHS3 compliance and REACH unaffected status consistent with the original TRS3222ECDB.

Frequently Asked Questions (FAQ)

Q: Can MAX3222EIDBR directly replace TRS3222ECDB without PCB modification?

A: Yes. MAX3222EIDBR maintains identical 20-SSOP packaging, 500 kbps data rate, and 300 mV receiver hysteresis. The extended operating temperature range (-40°C to 85°C) provides additional capability without affecting compatibility.

Q: What is the difference between ICL3222ECAZ and ICL3222EIAZ?

A: Both use 20-SSOP packaging with 250 kbps data rate and 500 mV receiver hysteresis. ICL3222EIAZ extends the operating temperature range to -40°C to 85°C, while ICL3222ECAZ operates at 0°C to 70°C. Selection depends on thermal environment requirements.

Q: Why do some substitutes operate at 250 kbps instead of 500 kbps?

A: The ICL3222 series from Renesas operates at 250 kbps data rate. This is a functional parameter difference. Applications requiring 500 kbps operation must use MAX3222EIDBR or equivalent parts rated for that speed.

Q: What is the significance of the -T suffix in part numbers?

A: The -T suffix indicates Tape & Reel packaging for automated assembly. Parts without -T suffix are supplied in Tube packaging. Both formats contain identical die and electrical specifications; packaging selection depends on manufacturing process requirements.

Q: Can 20-TSSOP variants substitute for 20-SSOP without design changes?

A: No. 20-TSSOP (0.173", 4.40mm width) and 20-SSOP (0.209", 5.30mm width) have different footprints. PCB redesign is required for package conversion. Direct replacement requires maintaining the same package type.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original TRS3222ECDB specification.

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