GD65232DBR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The GD65232DBR is a full-duplex RS232 transceiver IC manufactured by Texas Instruments, featuring 3 drivers and 5 receivers in a 20-SSOP surface mount package. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement planning. The part operates across extended temperature ranges and supports data rates up to 120 kbps with dual supply voltage capability (5V or ±7.5V to ±15V).

Key Parameters

Parameter	GD65232DBR Specification
Manufacturer	Texas Instruments
Protocol	RS232
Type	Transceiver
Drivers/Receivers	3/5
Duplex Mode	Full
Package	20-SSOP (0.209", 5.30mm Width)
Data Rate	120 kbps
Supply Voltage	5V, ±7.5V ~ ±15V
Operating Temperature	-40°C ~ 85°C
Receiver Hysteresis	500 mV
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the GD65232DBR is determined by the following critical parameters: RS232 protocol compliance, 3/5 driver/receiver configuration, full-duplex operation, surface mount packaging, and electrical compatibility across supply voltage and temperature ranges.

Substitute parts are grouped into two categories:

Category 1: Package-Compatible Substitutes (20-SSOP) Parts maintaining identical package geometry (20-SSOP, 0.209" × 5.30mm) with matching electrical specifications. These substitutes include MAX3185CAP+, MAX3185CAP+T, MAX3185EAP+, and MAX3185EAP+T from Analog Devices Inc./Maxim Integrated. All maintain the 3/5 driver/receiver configuration and full-duplex RS232 operation.

Category 2: Manufacturer-Recommended Alternative (20-SOIC) The GD65232DWR from Texas Instruments provides functional equivalence with modified package geometry (20-SOIC, 0.295" × 7.50mm). This part maintains identical electrical specifications and is recommended by the original manufacturer as a direct functional replacement despite package differences.

Parameter Comparison

Parameter	GD65232DBR	GD65232DWR	MAX3185CAP+	MAX3185CAP+T	MAX3185EAP+	MAX3185EAP+T
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim
Protocol	RS232	RS232	RS232	RS232	RS232	RS232
Drivers/Receivers	3/5	3/5	3/5	3/5	3/5	3/5
Duplex	Full	Full	Full	Full	Full	Full
Package	20-SSOP	20-SOIC	20-SSOP	20-SSOP	20-SSOP	20-SSOP
Data Rate	120 kbps	120 kbps	230 kbps	230 kbps	230 kbps	230 kbps
Supply Voltage	5V, ±7.5V ~ ±15V	5V, ±7.5V ~ ±15V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Receiver Hysteresis	500 mV	500 mV	650 mV	650 mV	650 mV	650 mV
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Package Compatibility (20-SSOP): The MAX3185EAP+T and MAX3185EAP+ are preferred substitutes when PCB layout constraints require identical 20-SSOP package geometry. Both parts are active products from Analog Devices Inc./Maxim Integrated with ROHS3 compliance. The MAX3185EAP+ series supports the full -40°C to 85°C temperature range matching the original GD65232DBR specification, ensuring compatibility in extended temperature applications.

For Manufacturer Continuity: The GD65232DWR provides direct functional equivalence as a Texas Instruments product with identical electrical specifications and extended temperature range support. This option is suitable when maintaining original manufacturer sourcing is a design requirement, despite the package transition from 20-SSOP to 20-SOIC.

For Commercial Temperature Range Applications: The MAX3185CAP+ and MAX3185CAP+T are suitable for designs operating within 0°C to 70°C temperature limits. These parts offer higher data rate capability (230 kbps) and are available in both tube and tape & reel packaging formats.

All substitute parts maintain ROHS3 compliance and RoHS certification status consistent with the original component.

Frequently Asked Questions (FAQ)

Q: Can MAX3185 series parts directly replace GD65232DBR without PCB modifications? A: MAX3185 parts in 20-SSOP package (MAX3185CAP+, MAX3185CAP+T, MAX3185EAP+, MAX3185EAP+T) are pin-compatible and require no PCB layout changes. The GD65232DWR requires PCB rework due to package geometry differences (20-SOIC vs. 20-SSOP).

Q: What are the key electrical differences between GD65232DBR and MAX3185 substitutes? A: The primary differences are data rate (120 kbps vs. 230 kbps), receiver hysteresis (500 mV vs. 650 mV), and supply voltage range (5V/±7.5V~±15V vs. 4.5V~5.5V). MAX3185EAP+ variants support the full -40°C to 85°C temperature range; MAX3185CAP+ variants are limited to 0°C to 70°C.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts (GD65232DWR, MAX3185CAP+, MAX3185CAP+T, MAX3185EAP+, MAX3185EAP+T) are ROHS3 compliant and REACH unaffected.

Q: What packaging options are available for MAX3185 substitutes? A: MAX3185CAP+ and MAX3185EAP+ are supplied in tube packaging. MAX3185CAP+T and MAX3185EAP+T are supplied in tape & reel format. GD65232DWR is available in cut tape and digi-reel packaging.

Q: Does the higher data rate of MAX3185 (230 kbps vs. 120 kbps) affect compatibility? A: No. Higher data rate capability is backward compatible with applications designed for 120 kbps operation. The transceiver will operate correctly at lower data rates.

Q: Which substitute is recommended for new designs? A: For new designs requiring 20-SSOP package geometry and extended temperature range, MAX3185EAP+T is the recommended choice as an active product with full temperature specification support and tape & reel availability for production volumes.

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