GD75323DWR Equivalent & Substitute Parts

Part Overview

The GD75323DWR is a full-duplex RS232 transceiver manufactured by Texas Instruments, configured with 5 drivers and 3 receivers in a 20-SOIC surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. Finding equivalent substitute parts is necessary to ensure design continuity and long-term supply chain reliability for applications requiring RS232 interface functionality.

Substiute Parts

GD75323DWR

Texas InstrumentsIn Stock: 4431GD75323DWR Datasheet

Current PartRFQ

GD75232DBR

Texas InstrumentsIn Stock: 43310GD75232DBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GD75323DWR is determined by the following critical parameters:

• Protocol Compatibility: RS232 full-duplex transceiver functionality
• Driver/Receiver Configuration: 5 drivers and 3 receivers (or functionally equivalent configurations)
• Data Rate: 120 Kbps minimum support
• Supply Voltage Range: Compatible with 4.5V ~ 5.5V operation
• Operating Temperature Range: 0°C ~ 70°C
• Package Type: Surface mount configuration with pinout compatibility
• Receiver Hysteresis: 500 mV threshold specification

The GD75232DBR qualifies as a manufacturer-recommended substitute based on matching protocol, duplex mode, data rate, operating temperature, and receiver hysteresis specifications. The driver/receiver configuration differs (3/5 versus 5/3), which represents a functional variation suitable for applications where the specific driver/receiver count can be accommodated within system design constraints.

Parameter Comparison

Engineering Selection Recommendations

The GD75232DBR is the manufacturer-recommended substitute for the GD75323DWR. Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The substitute part carries Active product status with significantly higher inventory availability (43,200 pieces versus 4,418 pieces), providing superior supply chain continuity.

The primary design consideration is the inverted driver/receiver configuration (3/5 versus 5/3). This substitution is valid only when the application architecture can accommodate the different number of transmit and receive channels. The substitute part supports an extended supply voltage range (5V, ±7.5V ~ 15V) compared to the main part (4.5V ~ 5.5V), offering greater flexibility in power supply design.

Package geometry differs between the two parts: the main part uses 20-SOIC (7.50mm width) while the substitute uses 20-SSOP (5.30mm width). PCB layout modifications are required to accommodate the smaller footprint of the substitute part.

Frequently Asked Questions (FAQ)

Q: Can the GD75232DBR directly replace the GD75323DWR without circuit modifications?

A: Direct replacement requires verification that your application can function with 3 drivers and 5 receivers instead of 5 drivers and 3 receivers. The inverted configuration may necessitate circuit redesign depending on your specific RS232 channel requirements.

Q: What are the package compatibility implications?

A: The GD75232DBR uses a 20-SSOP package (5.30mm width) compared to the GD75323DWR's 20-SOIC package (7.50mm width). PCB footprint redesign is mandatory; the parts are not pin-compatible on existing layouts.

Q: Are both parts compliant with the same regulatory standards?

A: Yes. Both the GD75323DWR and GD75232DBR are ROHS3 compliant, REACH unaffected, and carry the same ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What is the supply voltage difference between these parts?

A: The GD75323DWR operates at 4.5V ~ 5.5V, while the GD75232DBR supports 5V, ±7.5V ~ 15V. The substitute part's extended range provides additional design flexibility but requires verification that your power supply design is compatible.

Q: Why is the GD75323DWR marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production. The GD75232DBR, with Active status and higher inventory levels, is recommended for new designs and long-term production requirements.

Q: Are the data rate and receiver hysteresis specifications identical?

A: Yes. Both parts support 120 Kbps data rate and 500 mV receiver hysteresis, ensuring equivalent signal integrity performance in RS232 communication applications.