CD74HC192PW Equivalent & Substitute Parts

Part Overview

The CD74HC192PW is a decade counter integrated circuit manufactured by Texas Instruments, classified as a 4-bit logic counter in the 74HC series. This component functions as a synchronous up/down counter with asynchronous reset capability, designed for digital counting applications requiring positive edge triggering. The CD74HC192PW is currently listed with obsolete product status, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

CD74HC192PW

Texas InstrumentsIn Stock: 1189CD74HC192PW Datasheet

Current PartRFQ

CD74HC192PWR

Texas InstrumentsIn Stock: 1581CD74HC192PWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC192PW is determined by strict equivalence across the following critical parameters:

• Logic function: Decade counter, 4-bit, up/down direction capability
• Electrical characteristics: 24 MHz count rate, 2 V ~ 6 V supply voltage range, positive edge triggering
• Reset functionality: Asynchronous reset with synchronous timing architecture
• Package specification: 16-TSSOP surface mount form factor with identical physical dimensions
• Environmental compliance: ROHS3 compliance, MSL Level 1, REACH unaffected status
• Operating range: -55°C ~ 125°C temperature specification

The CD74HC192PWR qualifies as a direct substitute based on identical electrical specifications, package geometry, and compliance certifications. The primary distinction is packaging format: the substitute is supplied in Tape & Reel (TR) configuration versus the original tube packaging, with active product status enabling continued availability.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC192PWR is the direct functional equivalent for the obsolete CD74HC192PW. Selection of the substitute is based on:

• Identical electrical and timing specifications across all critical parameters
• Matching 16-TSSOP package geometry enabling direct PCB footprint compatibility
• Active product status ensuring long-term availability and supply chain continuity
• Equivalent compliance certifications (ROHS3, MSL Level 1, REACH unaffected)
• Manufacturer-recommended substitution designation from Texas Instruments

The transition from tube to Tape & Reel packaging does not affect component functionality or electrical performance. Tape & Reel format is standard for high-volume production environments and automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can CD74HC192PWR be used as a direct replacement for CD74HC192PW in existing designs?

A: Yes. The CD74HC192PWR is electrically and functionally identical to the CD74HC192PW. Both components share the same 16-TSSOP package geometry, pin configuration, and electrical specifications. No circuit modifications are required.

Q: What is the difference between the two part numbers?

A: The primary difference is packaging format. CD74HC192PW is supplied in tube packaging, while CD74HC192PWR is supplied in Tape & Reel (TR) format. The "R" suffix indicates reel packaging. Electrical performance is identical.

Q: Why is the original CD74HC192PW listed as obsolete?

A: Product obsolescence reflects Texas Instruments' manufacturing and support decisions. The CD74HC192PWR remains in active production, providing continued availability for the same functional capability.

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

A: No. Both parts maintain identical ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status. Environmental and regulatory certifications are equivalent.

Q: What is the maximum count rate for this decade counter?

A: The maximum count rate is 24 MHz for both the main part and substitute. This specification applies to positive edge triggering in synchronous mode.

Q: Can this counter operate at supply voltages outside the 2 V ~ 6 V range?

A: No. Both the CD74HC192PW and CD74HC192PWR are specified for operation within the 2 V ~ 6 V supply voltage range. Operation outside this range is not supported.

Q: Is the asynchronous reset function identical between both parts?

A: Yes. Both components feature asynchronous reset capability with synchronous timing architecture. Reset behavior and timing characteristics are identical.