CD4555BPW Equivalent & Substitute Parts

Part Overview

The CD4555BPW is a Decoder/Demultiplexer logic integrated circuit manufactured by Texas Instruments, part of the 4000B series. This device features a 1 x 2:4 decoder configuration in a 16-TSSOP surface mount package. The CD4555BPW is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and procurement.

Substiute Parts

CD4555BPW

Texas InstrumentsIn Stock: 837CD4555BPW Datasheet

Current PartRFQ

CD4555BPWR

Texas InstrumentsIn Stock: 1645CD4555BPWR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4555BPW is determined by strict equivalence across the following critical parameters:

• Decoder/Demultiplexer type with 1 x 2:4 circuit configuration
• 2 independent circuits
• 16-TSSOP surface mount package with identical 0.173" (4.40mm) width
• Dual supply voltage range of 3V ~ 18V
• Output current specifications of 6.8mA (high and low)
• Operating temperature range of -55°C ~ 125°C
• ROHS3 compliance and MSL 1 rating

The CD4555BPWR meets all these criteria and qualifies as a direct substitute. The primary distinction between these parts is packaging format: the CD4555BPW uses standard packaging, while the CD4555BPWR is supplied in Tape & Reel (TR) format for automated assembly operations.

Parameter Comparison

Engineering Selection Recommendations

The CD4555BPWR is the active equivalent substitute for the discontinued CD4555BPW. Both parts maintain identical electrical and mechanical specifications, including decoder configuration, package dimensions, voltage supply range, output current ratings, and operating temperature range. The CD4555BPWR carries active product status with higher inventory availability (1572 Pcs vs. 820 Pcs), ensuring supply chain continuity.

Both parts meet ROHS3 compliance and carry MSL 1 (Unlimited) moisture sensitivity ratings, confirming equivalent environmental and regulatory standing. The selection between these parts depends on procurement requirements: the CD4555BPWR in Tape & Reel format is suitable for high-volume automated assembly, while standard packaging may be preferred for lower-volume or manual assembly operations.

Frequently Asked Questions (FAQ)

Q: Can the CD4555BPWR directly replace the CD4555BPW in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all functional parameters. The 16-TSSOP package dimensions, pin configuration, voltage supply requirements, and output current specifications are equivalent. Substitution requires no circuit modifications.

Q: What is the difference between CD4555BPW and CD4555BPWR?

A: The primary difference is packaging format. The CD4555BPW uses standard packaging, while the CD4555BPWR is supplied in Tape & Reel (TR) format for automated pick-and-place assembly. All electrical and mechanical specifications remain identical.

Q: Are there compliance differences between these parts?

A: No. Both parts carry identical ROHS3 compliance status and MSL 1 (Unlimited) moisture sensitivity ratings. They meet the same regulatory and environmental standards.

Q: Why is the CD4555BPW discontinued?

A: The CD4555BPW is discontinued at DiGi Electronics. The CD4555BPWR remains in active production as the current supply option for this decoder/demultiplexer configuration.

Q: What are the critical parameters for substitution?

A: Substitution is valid when the following parameters match: 1 x 2:4 decoder configuration, 2 independent circuits, 16-TSSOP package, 3V ~ 18V dual supply voltage, 6.8mA output current (high and low), and -55°C ~ 125°C operating temperature range.