CDC203DWRG4 Equivalent & Substitute Parts

Part Overview

The CDC203DWRG4 is a 6-channel inverter logic IC manufactured by Texas Instruments in a 20-SOIC surface mount package. This part is classified as obsolete, which necessitates identification of equivalent substitute components for ongoing design support and procurement. The CDC203DWRG4 operates within a 3V to 3.6V supply voltage range and is designed for applications requiring inverter logic functionality with specified propagation delay characteristics.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Voltage - Supply	3V ~ 3.6V
Current - Quiescent (Max)	4 µA
Current - Output High, Low	12mA, 12mA
Input Logic Level - Low	0.9V ~ 1.1V
Input Logic Level - High	2.1V ~ 2.5V
Max Propagation Delay @ V, Max CL	6.1ns @ 3.3V, 30pF
Operating Temperature	25°C ~ 70°C
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CDC203DWRG4 is determined by strict equivalence across the following critical parameters:

Logic Type: Inverter (6-channel, 1-input configuration)
Voltage Supply Range: 3V ~ 3.6V
Output Current Capability: 12mA (High and Low)
Input Logic Levels: 0.9V ~ 1.1V (Low), 2.1V ~ 2.5V (High)
Propagation Delay: 6.1ns @ 3.3V, 30pF
Package: 20-SOIC surface mount
Operating Temperature Range: 25°C ~ 70°C
Compliance: ROHS3, MSL Level 1

The CDC203DW meets all specified parameters and serves as a direct substitute. Both parts share identical electrical characteristics, package specifications, and compliance certifications. The primary distinction is product status: CDC203DWRG4 is obsolete, while CDC203DW is active.

Parameter Comparison

Parameter	CDC203DWRG4	CDC203DW	Match
Manufacturer	Texas Instruments	Texas Instruments	Yes
Logic Type	Inverter	Inverter	Yes
Number of Circuits	6	6	Yes
Number of Inputs	1	1	Yes
Voltage - Supply	3V ~ 3.6V	3V ~ 3.6V	Yes
Current - Quiescent (Max)	4 µA	4 µA	Yes
Current - Output High, Low	12mA, 12mA	12mA, 12mA	Yes
Input Logic Level - Low	0.9V ~ 1.1V	0.9V ~ 1.1V	Yes
Input Logic Level - High	2.1V ~ 2.5V	2.1V ~ 2.5V	Yes
Max Propagation Delay @ V, Max CL	6.1ns @ 3.3V, 30pF	6.1ns @ 3.3V, 30pF	Yes
Operating Temperature	25°C ~ 70°C	25°C ~ 70°C	Yes
Package / Case	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)	Yes
Mounting Type	Surface Mount	Surface Mount	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Yes
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Yes
Product Status	Obsolete	Active	Functional Equivalence

Engineering Selection Recommendations

The CDC203DW is the appropriate substitute for the obsolete CDC203DWRG4. Both components are manufactured by Texas Instruments and maintain identical electrical specifications, timing characteristics, and package dimensions. The CDC203DW carries active product status, ensuring continued availability and manufacturing support.

From a compliance perspective, both parts are ROHS3 compliant and carry MSL Level 1 rating, indicating no moisture sensitivity constraints during storage and handling. The CDC203DW is available in tube packaging, whereas the CDC203DWRG4 packaging specification was not provided; however, the 20-SOIC package footprint remains consistent across both parts, ensuring direct PCB compatibility.

Selection of the CDC203DW eliminates obsolescence risk while maintaining full functional and electrical equivalence for the inverter logic application.

Frequently Asked Questions (FAQ)

Q: Can CDC203DW be used as a direct replacement for CDC203DWRG4 in existing designs?

A: Yes. The CDC203DW is electrically and mechanically equivalent to the CDC203DWRG4. Both parts feature identical logic type, circuit count, input configuration, supply voltage range, output current capability, input logic levels, propagation delay, and 20-SOIC package dimensions. Direct substitution on the PCB is supported without design modification.

Q: What is the primary reason to transition from CDC203DWRG4 to CDC203DW?

A: The CDC203DWRG4 is classified as obsolete, which creates long-term procurement and supply chain risk. The CDC203DW is an active product from the same manufacturer with identical specifications, ensuring continued availability and manufacturing support.

Q: Are there any differences in compliance or certifications between these parts?

A: No. Both the CDC203DWRG4 and CDC203DW are ROHS3 compliant and carry MSL Level 1 rating. Compliance certifications are identical.

Q: What is the operating temperature range for both parts?

A: Both parts operate within the 25°C to 70°C temperature range. This specification is identical for CDC203DWRG4 and CDC203DW.

Q: Are the package dimensions identical?

A: Yes. Both parts use the 20-SOIC package with dimensions of 0.295" × 7.50mm width. The surface mount footprint is identical, ensuring PCB compatibility without layout modification.

Q: What is the quiescent current specification?

A: The maximum quiescent current for both parts is 4 µA at the specified supply voltage range of 3V to 3.6V.

Q: What are the output current specifications?

A: Both parts provide 12mA output current capability for both high and low logic states.

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