TRS3222CDB RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS3222CDB is a full-duplex RS232 transceiver manufactured by Texas Instruments, configured as a 2/2 transceiver in a 20-SSOP surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The TRS3222CDB operates across a 3V to 5.5V supply range with a 250kbps data rate and 300mV receiver hysteresis, suitable for legacy RS232 communication applications requiring full-duplex operation.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS3222CDB
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Package / Case	20-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Data Rate	250kbps
Receiver Hysteresis	300 mV
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the TRS3222CDB is determined by strict electrical and mechanical compatibility across the following critical parameters:

Mandatory Compatibility Criteria:

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

Allowable Parameter Variations:

Data Rate: Substitute parts may exceed 250kbps (backward compatible)
Receiver Hysteresis: Substitute parts may differ (300mV or 500mV acceptable)
Operating Temperature: Substitute parts may exceed 0°C ~ 70°C range (extended range acceptable)
Product Status: Active parts preferred over obsolete

Substitute parts are categorized into two groups: Upgrade Parts (enhanced performance characteristics) and Manufacturer Recommended Parts (direct functional equivalents with varying performance levels).

Parameter Comparison

Part Number	Manufacturer	Data Rate	Receiver Hysteresis	Operating Temperature	Product Status	Packaging	Inventory (Pcs)
TRS3222CDB	Texas Instruments	250kbps	300 mV	0°C ~ 70°C	Obsolete	-	1001
MAX3222EEAP+	Analog Devices Inc./Maxim Integrated	1Mbps	500 mV	-40°C ~ 85°C	Active	Tube	2720
MAX3222EEAP+T	Analog Devices Inc./Maxim Integrated	1Mbps	500 mV	-40°C ~ 85°C	Active	Cut Tape (CT) & Digi-Reel®	6900
SP3222EBEA-L/TR	MaxLinear, Inc.	250kbps	300 mV	-40°C ~ 85°C	Active	Tape & Reel (TR)	3756
ST3222EBPR	STMicroelectronics	250kbps	500 mV	-40°C ~ 85°C	Active	Cut Tape (CT) & Digi-Reel®	17100
MAX3222CAP+	Analog Devices Inc./Maxim Integrated	120Kbps	300 mV	0°C ~ 70°C	Active	Tube	2256
MAX3222CAP+T	Analog Devices Inc./Maxim Integrated	120Kbps	300 mV	0°C ~ 70°C	Active	Cut Tape (CT) & Digi-Reel®	3500
MAX3222EAP+	Analog Devices Inc./Maxim Integrated	120Kbps	300 mV	-40°C ~ 85°C	Active	Tube	3242
MAX3222EAP+T	Analog Devices Inc./Maxim Integrated	120Kbps	300 mV	-40°C ~ 85°C	Active	Cut Tape (CT) & Digi-Reel®	2200
MAX3222ECAP+	Analog Devices Inc./Maxim Integrated	1Mbps	500 mV	0°C ~ 70°C	Active	Tube	2060
MAX3222ECAP+T	Analog Devices Inc./Maxim Integrated	1Mbps	500 mV	0°C ~ 70°C	Active	Tape & Reel (TR)	2879

Engineering Selection Recommendations

All substitute parts listed maintain full electrical and mechanical compatibility with the TRS3222CDB across the mandatory criteria: RS232 protocol, 2/2 driver/receiver configuration, full-duplex operation, 20-SSOP package, and 3V to 5.5V supply voltage.

For Direct Functional Equivalence: Select MAX3222CAP+, MAX3222CAP+T, MAX3222EAP+, or MAX3222EAP+T for applications requiring identical operating temperature ranges (0°C ~ 70°C) and receiver hysteresis (300mV) to the original TRS3222CDB. These parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating.

For Extended Operating Temperature Range: Select SP3222EBEA-L/TR, ST3222EBPR, MAX3222EAP+, or MAX3222EAP+T for designs requiring operation across -40°C to 85°C. These parts provide enhanced thermal performance while maintaining core RS232 transceiver functionality.

For Enhanced Data Rate Performance: Select MAX3222EEAP+, MAX3222EEAP+T, MAX3222ECAP+, or MAX3222ECAP+T for applications where 1Mbps data rate capability is beneficial. These parts support higher-speed RS232 communication while remaining backward compatible with lower-speed legacy systems.

All substitute parts carry ROHS3 compliance and EAR99 export classification, matching the regulatory status of the original TRS3222CDB.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher data rate than the TRS3222CDB? A: Yes. Substitute parts with 1Mbps data rate capability (MAX3222EEAP+, MAX3222EEAP+T, MAX3222ECAP+, MAX3222ECAP+T) are fully backward compatible with applications designed for 250kbps operation. Higher data rate capability does not affect lower-speed performance.

Q: What is the difference between receiver hysteresis values of 300mV and 500mV? A: Receiver hysteresis determines the voltage differential required for input signal transitions. Both 300mV and 500mV hysteresis values are acceptable for RS232 transceiver substitution. The choice depends on application noise immunity requirements; higher hysteresis provides greater noise rejection.

Q: Are packaging options (Tube, Cut Tape, Tape & Reel) interchangeable? A: Packaging options affect handling, storage, and assembly processes but do not affect electrical performance. Select packaging based on production volume and assembly equipment compatibility. Tube packaging suits lower volumes; Cut Tape and Tape & Reel suit higher-volume automated assembly.

Q: Can I substitute a part with an extended operating temperature range in a design specified for 0°C ~ 70°C? A: Yes. Parts rated for -40°C ~ 85°C operation are fully compatible with designs specified for 0°C ~ 70°C. Extended temperature range provides additional design margin and environmental flexibility without compromising performance within the original specification.

Q: What is the significance of Product Status (Active vs. Obsolete)? A: Active products have ongoing manufacturer support, documented availability, and stable pricing. The TRS3222CDB is obsolete, making active substitute parts necessary for production continuity and long-term supply chain reliability.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the environmental and regulatory compliance of the original TRS3222CDB.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message