TRS232IN RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS232IN is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-DIP package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. The TRS232IN operates within the 4.5V to 5.5V supply range with a data rate of 120Kbps and supports operating temperatures from -40°C to 85°C. Identifying compatible substitutes ensures design continuity and component availability for applications requiring RS232 interface functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS232IN
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	120Kbps
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	16-DIP (0.300", 7.62mm)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the TRS232IN is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Receiver Hysteresis: 500 mV
Voltage - Supply: 4.5V ~ 5.5V
Mounting Type: Through Hole
Package / Case: 16-DIP (0.300", 7.62mm)

Compatible Parameter Ranges:

Data Rate: 120Kbps or higher
Operating Temperature: Must encompass -40°C to 85°C or be suitable for the intended application temperature range
RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories:

MFR Recommended Substitutes: Parts that meet all critical parameters with active product status and higher or equivalent data rates.

Parametric Equivalents: Parts that match all critical parameters and operating temperature range but may have different product status or manufacturer.

Parameter Comparison

Part Number	Manufacturer	Data Rate	Operating Temperature	Product Status	Drivers/Receivers	Package
TRS232IN	Texas Instruments	120Kbps	-40°C ~ 85°C	Obsolete	2/2	16-DIP
MAX232EIN	Texas Instruments	250kbps	-40°C ~ 85°C	Active	2/2	16-DIP
TRS202EIN	Texas Instruments	120Kbps	-40°C ~ 85°C	Obsolete	2/2	16-DIP
HIN232ACPZ	Renesas Electronics Corporation	230kbps	0°C ~ 70°C	Active	2/2	16-DIP
HIN232CPZ	Renesas Electronics Corporation	120Kbps	0°C ~ 70°C	Active	2/2	16-DIP
HIN232ECPZ	Renesas Electronics Corporation	230kbps	0°C ~ 70°C	Active	2/2	16-DIP
MAX232CPE+	Analog Devices Inc./Maxim Integrated	120Kbps	0°C ~ 70°C	Active	2/2	16-DIP
MAX232ECPE+	Analog Devices Inc./Maxim Integrated	120Kbps	0°C ~ 70°C	Active	2/2	16-DIP
HIN232IPZ	Renesas Electronics Corporation	120Kbps	-40°C ~ 85°C	Active	2/2	16-DIP
MAX202EEPE+	Analog Devices Inc./Maxim Integrated	120Kbps	-40°C ~ 85°C	Active	2/2	16-DIP
MAX202EPE+	Analog Devices Inc./Maxim Integrated	120Kbps	-40°C ~ 85°C	Active	2/2	16-DIP

Engineering Selection Recommendations

For Extended Temperature Range Applications (-40°C to 85°C):

Select from active parts with matching temperature specifications: MAX232EIN, HIN232IPZ, MAX202EEPE+, or MAX202EPE+. These parts maintain full operational capability across the extended temperature range required by the original TRS232IN specification.

For Standard Temperature Range Applications (0°C to 70°C):

HIN232CPZ, HIN232ECPZ, MAX232CPE+, and MAX232ECPE+ are suitable alternatives with active product status and ROHS3 compliance. These parts are widely available and supported by active manufacturers.

For Higher Data Rate Requirements:

MAX232EIN (250kbps), HIN232ACPZ (230kbps), and HIN232ECPZ (230kbps) provide increased data rate capability while maintaining full RS232 2/2 transceiver functionality and 16-DIP package compatibility.

For Direct Parametric Equivalence:

TRS202EIN and HIN232IPZ match the original TRS232IN electrical specifications and operating temperature range. Both are parametric equivalents with active manufacturer support.

All recommended substitutes maintain ROHS3 compliance and are available in the same 16-DIP through-hole package, ensuring mechanical and electrical compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can MAX232EIN replace TRS232IN in all applications?

A: MAX232EIN is electrically compatible with TRS232IN. Both operate at 4.5V to 5.5V supply voltage, support 2/2 full-duplex RS232 communication, and use the 16-DIP package. MAX232EIN offers higher data rate capability (250kbps vs. 120Kbps) and active product status. Operating temperature range is identical (-40°C to 85°C), making it suitable for direct substitution.

Q: What is the difference between HIN232CPZ and HIN232ECPZ?

A: Both parts are manufactured by Renesas Electronics Corporation in the 16-DIP package with identical electrical specifications (2/2 RS232 transceiver, 4.5V to 5.5V supply, 500 mV receiver hysteresis). The primary difference is data rate: HIN232CPZ operates at 120Kbps while HIN232ECPZ operates at 230kbps. Both support 0°C to 70°C operating temperature range.

Q: Are there substitutes available for applications requiring -40°C to 85°C operation?

A: Yes. HIN232IPZ, MAX202EEPE+, and MAX202EPE+ all support the full -40°C to 85°C operating temperature range while maintaining 2/2 RS232 transceiver functionality in the 16-DIP package. These parts are active products with ROHS3 compliance.

Q: Why is TRS232IN listed as obsolete?

A: TRS232IN is classified as obsolete by Texas Instruments. However, parametric equivalents and manufacturer-recommended substitutes remain in active production, ensuring continued availability for system support and new designs.

Q: Can I use MAX232CPE+ or MAX232ECPE+ as substitutes?

A: Yes. Both MAX232CPE+ and MAX232ECPE+ are active products from Analog Devices Inc./Maxim Integrated that meet all critical substitution parameters: 2/2 RS232 transceiver, 4.5V to 5.5V supply, 500 mV receiver hysteresis, and 16-DIP package. Both operate at 120Kbps with 0°C to 70°C temperature range. They are suitable for applications not requiring extended low-temperature operation below 0°C.

Q: What is the significance of the 16-DIP package specification?

A: The 16-DIP (0.300", 7.62mm) package is a through-hole dual inline package. All listed substitutes use this identical package, ensuring mechanical compatibility with existing PCB designs without layout modifications. Package compatibility is a critical substitution criterion.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the environmental compliance status of the original TRS232IN. All parts also maintain REACH unaffected status and EAR99 export classification.

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