TRS207CDB RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS207CDB is a full-duplex RS232 transceiver manufactured by Texas Instruments, featuring 5 drivers and 3 receivers in a 24-SSOP surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The TRS207CDB operates within a 4.5V to 5.5V supply range with a 120 kbps data rate and 500 mV receiver hysteresis, suitable for legacy serial communication applications requiring full RS232 protocol compliance.

Key Parameters

Parameter	TRS207CDB Value
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Drivers/Receivers	5/3
Duplex	Full
Data Rate	120 kbps
Voltage Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package	24-SSOP (0.209", 5.30mm Width)
Receiver Hysteresis	500 mV
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the TRS207CDB is determined by strict electrical and mechanical compatibility across the following parameters:

Primary Substitution Criteria:

Protocol: RS232 (full-duplex)
Configuration: 5 drivers / 3 receivers
Package Type: 24-SSOP or 24-TSSOP surface mount
Voltage Supply Range: 4.5V ~ 5.5V
Duplex Mode: Full

Secondary Compatibility Factors:

Data Rate: Minimum 120 kbps (higher rates are acceptable)
Receiver Hysteresis: 500 mV or 650 mV (both acceptable for RS232 applications)
Operating Temperature: Extended range (-40°C ~ 85°C) provides broader operational envelope than original 0°C ~ 70°C
Packaging Format: Tube, Tape & Reel (TR), or Cut Tape (CT) & Digi-Reel® formats are interchangeable for component selection

Active Substitute Parts (Grouped by Manufacturer):

Analog Devices Inc. ADM207 series provides direct functional equivalents with enhanced specifications:

ADM207ARSZ (Tube packaging)
ADM207ARSZ-REEL (Tape & Reel)
ADM207EARSZ (Tube packaging, 230 kbps data rate)
ADM207EARSZ-REEL (Tape & Reel, 230 kbps data rate)
ADM207EARUZ (24-TSSOP package, 230 kbps data rate)
ADM207EARUZ-REEL7 (Cut Tape & Digi-Reel, 24-TSSOP, 230 kbps data rate)

Analog Devices Inc./Maxim Integrated MAX207 series maintains electrical compatibility:

MAX207CAG+ (Tube packaging)
MAX207ECAG+ (Tube packaging)
MAX207ECAG+T (Tape & Reel)
MAX207EEAG+ (Tube packaging, extended temperature range)

Parameter Comparison

Part Number	Manufacturer	Drivers/Receivers	Data Rate	Voltage Supply	Operating Temp	Package	Receiver Hysteresis	Product Status
TRS207CDB	Texas Instruments	5/3	120 kbps	4.5V ~ 5.5V	0°C ~ 70°C	24-SSOP	500 mV	Obsolete
ADM207ARSZ	Analog Devices Inc.	5/3	120 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	24-SSOP	650 mV	Active
ADM207ARSZ-REEL	Analog Devices Inc.	5/3	120 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	24-SSOP	650 mV	Active
ADM207EARSZ	Analog Devices Inc.	5/3	230 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	24-SSOP	650 mV	Active
ADM207EARSZ-REEL	Analog Devices Inc.	5/3	230 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	24-SSOP	650 mV	Active
ADM207EARUZ	Analog Devices Inc.	5/3	230 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	24-TSSOP	650 mV	Active
ADM207EARUZ-REEL7	Analog Devices Inc.	5/3	230 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	24-TSSOP	650 mV	Active
MAX207CAG+	Analog Devices Inc./Maxim Integrated	5/3	120 kbps	4.75V ~ 5.25V	0°C ~ 70°C	24-SSOP	500 mV	Active
MAX207ECAG+	Analog Devices Inc./Maxim Integrated	5/3	120 kbps	4.75V ~ 5.25V	0°C ~ 70°C	24-SSOP	500 mV	Active
MAX207ECAG+T	Analog Devices Inc./Maxim Integrated	5/3	120 kbps	4.75V ~ 5.25V	0°C ~ 70°C	24-SSOP	500 mV	Active
MAX207EEAG+	Analog Devices Inc./Maxim Integrated	5/3	120 kbps	4.75V ~ 5.25V	-40°C ~ 85°C	24-SSOP	500 mV	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Operating Specifications):

Select MAX207CAG+, MAX207ECAG+, or MAX207ECAG+T when operating temperature range 0°C ~ 70°C and 120 kbps data rate match system requirements. These parts maintain the original 500 mV receiver hysteresis and identical voltage supply window (4.75V ~ 5.25V is a subset of 4.5V ~ 5.5V). All three are active products with ROHS3 compliance and REACH unaffected status.

For Extended Temperature Applications:

Select MAX207EEAG+ when extended operating temperature (-40°C ~ 85°C) is required while maintaining 120 kbps data rate and 500 mV hysteresis specifications. This part provides superior thermal performance over the original TRS207CDB.

For Higher Data Rate Requirements:

Select ADM207EARSZ or ADM207EARSZ-REEL when 230 kbps data rate is needed. Both maintain 5/3 driver/receiver configuration, 4.5V ~ 5.5V supply range, and extended temperature operation (-40°C ~ 85°C). The 650 mV receiver hysteresis remains within RS232 specification tolerances.

For Compact PCB Layouts:

Select ADM207EARUZ or ADM207EARUZ-REEL7 when 24-TSSOP package (0.173" width) is preferred over 24-SSOP (0.209" width). These parts offer 230 kbps data rate with extended temperature range and are available in Cut Tape & Digi-Reel format.

For Standard 24-SSOP Package with Extended Temperature:

Select ADM207ARSZ or ADM207ARSZ-REEL when maintaining the original 24-SSOP footprint with 120 kbps data rate is required, but extended temperature operation (-40°C ~ 85°C) is needed. The 650 mV hysteresis is acceptable for RS232 applications.

All substitute parts are ROHS3 compliant, MSL 1 (Unlimited), REACH unaffected, and classified as active products with current manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can ADM207EARSZ replace TRS207CDB in existing designs without PCB modification?

A: Yes. Both parts use the 24-SSOP package with identical 0.209" width and 5.30mm dimensions. Pin configuration for 5/3 driver/receiver RS232 transceiver topology is functionally equivalent. No PCB layout changes are required.

Q: What is the difference between ADM207EARSZ and ADM207EARUZ?

A: The primary difference is package type. ADM207EARSZ uses 24-SSOP (0.209" width), while ADM207EARUZ uses 24-TSSOP (0.173" width). Both provide identical electrical performance at 230 kbps data rate with extended temperature range. Select based on PCB space constraints and existing footprint requirements.

Q: Is the 650 mV receiver hysteresis in ADM207 series compatible with TRS207CDB's 500 mV specification?

A: Yes. RS232 protocol allows receiver hysteresis variation within the specified range. The 650 mV hysteresis in ADM207 parts provides improved noise immunity compared to the original 500 mV specification while maintaining full RS232 compliance and backward compatibility.

Q: Can MAX207EEAG+ operate at the original TRS207CDB temperature range of 0°C ~ 70°C?

A: Yes. MAX207EEAG+ is rated for -40°C ~ 85°C, which encompasses the original 0°C ~ 70°C range. This part provides superior thermal performance for applications requiring extended temperature operation beyond the original specification.

Q: What is the difference between Tube, Tape & Reel, and Cut Tape & Digi-Reel packaging?

A: These are packaging and delivery formats that do not affect electrical performance. Tube packaging is suitable for small quantities and manual assembly. Tape & Reel (TR) and Cut Tape & Digi-Reel® formats are designed for automated pick-and-place assembly. Select based on manufacturing process requirements, not electrical compatibility.

Q: Are all substitute parts available in current inventory?

A: All listed substitute parts are classified as active products with current manufacturing support. Inventory availability varies by part number and packaging format. ADM207EARSZ and ADM207EARSZ-REEL offer the highest inventory levels (3,151 and 2,060 units respectively).

Q: Can I use MAX207ECAG+T instead of MAX207ECAG+ for new designs?

A: Yes. Both parts are electrically identical. MAX207ECAG+T is supplied in Tape & Reel format, while MAX207ECAG+ is supplied in Tube format. Select based on assembly process requirements. Tape & Reel format is preferred for high-volume automated assembly.

Q: What is the voltage supply tolerance difference between TRS207CDB and substitute parts?

A: TRS207CDB specifies 4.5V ~ 5.5V. MAX207 series specifies 4.75V ~ 5.25V (narrower range). ADM207 series specifies 4.5V ~ 5.5V (identical range). For applications requiring the full 4.5V ~ 5.5V range, select ADM207 series parts.

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