CD4503BPW Equivalent & Substitute Parts

Part Overview

The CD4503BPW is a non-inverting buffer logic integrated circuit manufactured by Texas Instruments, part of the 4000B series. This device functions as a 2-element buffer with 2 and 4-bit (hex) configurations per element, featuring push-pull output architecture. The CD4503BPW is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent substitute parts is necessary to ensure continued component availability for new designs, repairs, and production continuity.

Substiute Parts

CD4503BPW

Texas InstrumentsIn Stock: 1882CD4503BPW Datasheet

Current PartRFQ

CD4503BPWR

Texas InstrumentsIn Stock: 2479CD4503BPWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD4503BPW are determined by strict equivalence across the following critical parameters:

• Logic Type: Buffer, Non-Inverting
• Number of Elements: 2
• Number of Bits per Element: 2, 4 (Hex)
• Output Type: Push-Pull
• Current - Output High, Low: 14.1mA, 23mA
• Voltage - Supply: 3V ~ 18V
• Operating Temperature: -55°C ~ 125°C (TA)
• Package / Case: 16-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount
• Base Product Number: CD4503

The CD4503BPWR is functionally identical to the CD4503BPW, with the primary difference being packaging format (Tape & Reel versus Tube). Both parts share identical electrical specifications, thermal characteristics, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The CD4503BPWR is the direct substitute for the CD4503BPW. Both parts are manufactured by Texas Instruments and maintain identical electrical and thermal specifications. The CD4503BPWR holds Active product status, ensuring continued availability and support, whereas the CD4503BPW is Last Time Buy. Both parts comply with ROHS3 and REACH requirements. Selection between these parts should be based on packaging requirements: Tube packaging for the CD4503BPW or Tape & Reel packaging for the CD4503BPWR. For new designs and production continuity, the CD4503BPWR is the preferred choice due to its Active status.

Frequently Asked Questions (FAQ)

Q: Can the CD4503BPWR directly replace the CD4503BPW in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Tube versus Tape & Reel). No circuit modifications are required.

Q: What is the significance of the packaging difference between Tube and Tape & Reel formats?

A: Tube packaging is suitable for manual handling and small-quantity applications. Tape & Reel packaging is designed for automated assembly processes and high-volume production. The die and electrical performance are identical.

Q: Why is the CD4503BPW marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. The CD4503BPWR remains in Active production and is the recommended alternative for future procurement.

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

A: No. Both the CD4503BPW and CD4503BPWR maintain identical RoHS3 compliance, REACH status, and Moisture Sensitivity Level (MSL) ratings.

Q: What are the critical electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by: Logic Type (Buffer, Non-Inverting), Number of Elements (2), Bits per Element (2, 4 Hex), Output Type (Push-Pull), Output Current (14.1mA High, 23mA Low), Supply Voltage Range (3V ~ 18V), Operating Temperature Range (-55°C ~ 125°C), and Package Type (16-TSSOP).