74LVC161DB,118 Equivalent & Substitute Parts

Part Overview

The 74LVC161DB,118 is a 4-bit binary counter IC manufactured by Nexperia USA Inc., designed for synchronous counting applications with positive edge triggering. This component features asynchronous reset capability and operates across a wide voltage range of 1.2 V to 3.6 V, making it suitable for low-voltage digital logic circuits. The device is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

74LVC161DB,118

Nexperia USA Inc.In Stock: 83974LVC161DB,118 Datasheet

Current PartRFQ

74LVC161PW,118

Nexperia USA Inc.In Stock: 1383474LVC161PW,118 Datasheet

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SN74LV161ADBR

Texas InstrumentsIn Stock: 3394SN74LV161ADBR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74LVC161DB,118 is determined by the following critical parameters:

• Logic Function: Binary counter with 4-bit capacity, 1 element, positive edge triggering, asynchronous reset, and synchronous timing
• Electrical Performance: Count rate of 150 MHz minimum, supply voltage range of 1.2 V to 3.6 V, operating temperature range of -40°C to 125°C
• Package Compatibility: 16-pin SSOP or equivalent surface-mount package
• Compliance: ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited)

Substitute parts must maintain functional equivalence across these parameters while accommodating minor variations in packaging format (SSOP vs. TSSOP) and manufacturer-specific performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

74LVC161PW,118 (Nexperia USA Inc.) is the primary substitute for the 74LVC161DB,118. Both devices are from the same manufacturer and 74LVC series, maintaining identical electrical specifications including 150 MHz count rate, 1.2 V to 3.6 V supply voltage range, and -40°C to 125°C operating temperature. The primary difference is packaging format: 74LVC161PW,118 uses 16-TSSOP (0.173", 4.40mm Width) versus the original 16-SSOP (0.209", 5.30mm Width). This substitute is currently in active production status with substantial inventory availability (13,802 pieces).

SN74LV161ADBR (Texas Instruments) provides an alternative from a different manufacturer within the same logic family. This device maintains the 16-SSOP package format and identical 4-bit binary counter functionality. However, it operates at a reduced count rate of 95 MHz compared to the original 150 MHz specification and supports a broader supply voltage range of 2 V to 5.5 V. The operating temperature range is limited to -40°C to 85°C. This substitute is suitable for applications where the lower count rate is acceptable and the extended voltage range provides design flexibility.

Both substitutes maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) ratings, ensuring regulatory and environmental compatibility with the original component.

Frequently Asked Questions (FAQ)

Q: Can 74LVC161PW,118 be used as a direct replacement for 74LVC161DB,118?

A: Yes, 74LVC161PW,118 is functionally equivalent with identical electrical specifications. The primary consideration is package format: 74LVC161PW,118 uses 16-TSSOP while the original uses 16-SSOP. Both are 16-pin surface-mount packages with different body dimensions. PCB layout and footprint modifications may be required.

Q: What are the key differences between 74LVC161PW,118 and SN74LV161ADBR?

A: Both are active substitutes with identical 4-bit binary counter functionality. 74LVC161PW,118 maintains the original 150 MHz count rate and 1.2 V to 3.6 V supply range, while SN74LV161ADBR operates at 95 MHz with a 2 V to 5.5 V supply range. SN74LV161ADBR has a narrower operating temperature range (-40°C to 85°C versus -40°C to 125°C). Select based on your application's speed and voltage requirements.

Q: Are package differences between SSOP and TSSOP significant for substitution?

A: Yes. SSOP (0.209", 5.30mm Width) and TSSOP (0.173", 4.40mm Width) have different body dimensions and pin spacing. While both are 16-pin surface-mount packages, they require different PCB footprints. Verify your PCB design can accommodate the substitute package before implementation.

Q: Do all substitutes maintain the same compliance certifications?

A: Yes. All three parts (74LVC161DB,118, 74LVC161PW,118, and SN74LV161ADBR) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All carry REACH Unaffected status and EAR99 ECCN classification.

Q: Which substitute should I select for new designs?

A: For new designs requiring the original 150 MHz performance and 1.2 V to 3.6 V supply range, use 74LVC161PW,118. If your application can tolerate 95 MHz operation and requires broader voltage support (2 V to 5.5 V), SN74LV161ADBR from Texas Instruments is a viable alternative. Both are in active production with established supply chains.