CD74HC190PW Equivalent & Substitute Parts

Part Overview

The CD74HC190PW 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 counter with up/down counting capability, operating at a maximum count rate of 35 MHz across a supply voltage range of 2 V to 6 V. The part is currently in Last Time Buy status, indicating discontinued production. Finding equivalent substitute parts is necessary to ensure continued availability for new designs and ongoing production requirements.

Substiute Parts

CD74HC190PW

Texas InstrumentsIn Stock: 1246CD74HC190PW Datasheet

Current PartRFQ

CD74HC190PWR

Texas InstrumentsIn Stock: 2594CD74HC190PWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC190PW is determined by strict equivalence across the following critical parameters:

• Logic Type: Counter, Decade (1 Element, 4 Bit)
• Trigger Type: Positive Edge
• Direction: Up, Down (bidirectional counting)
• Timing: Synchronous
• Count Rate: 35 MHz minimum
• Voltage Supply Range: 2 V ~ 6 V
• Package / Case: 16-TSSOP form factor
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C ~ 125°C
• Compliance: ROHS3 Compliant, REACH Unaffected

The substitute part CD74HC190PWR maintains identical electrical and mechanical specifications. The only difference is packaging format: the original part is supplied in Tube packaging, while the substitute is supplied in Tape & Reel (TR) format. Both parts share the same base product number (74HC190) and are manufactured by Texas Instruments.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC190PWR is a direct functional equivalent to the CD74HC190PW. Both parts are manufactured by Texas Instruments and share identical electrical specifications, pin configuration, and mechanical dimensions. The substitute part maintains active product status, ensuring continued availability and supply chain reliability compared to the original part's Last Time Buy status.

Selection between these parts should be based on packaging requirements. The CD74HC190PW is supplied in Tube packaging, suitable for lower-volume applications and manual assembly processes. The CD74HC190PWR is supplied in Tape & Reel format, optimized for high-volume automated assembly operations. Both parts comply with ROHS3 and REACH requirements, making them suitable for applications requiring environmental compliance certification.

Frequently Asked Questions (FAQ)

Q: Can CD74HC190PWR be used as a direct replacement for CD74HC190PW?

A: Yes. Both parts are electrically and mechanically identical. They share the same pin configuration, electrical performance specifications, and 16-TSSOP package dimensions. The only difference is the supply packaging format.

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

A: Tube packaging supplies components in plastic tubes, typically used for manual handling and lower-volume assembly. Tape & Reel packaging supplies components on continuous tape wound on reels, designed for automated pick-and-place assembly equipment. Both formats contain the same component.

Q: Why is the original part marked as Last Time Buy?

A: Last Time Buy status indicates that the manufacturer has discontinued production of this part number. Existing inventory may be available for a limited time. The CD74HC190PWR substitute maintains active production status.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts operate at 35 MHz count rate, support 2 V to 6 V supply voltage, and function as synchronous decade counters with up/down capability across the -55°C to 125°C temperature range.

Q: Do both parts meet the same compliance standards?

A: Yes. Both CD74HC190PW and CD74HC190PWR are ROHS3 Compliant and REACH Unaffected, with MSL rating of 1 (Unlimited).