74LVC273DB,118 Equivalent & Substitute Parts

Part Overview

The 74LVC273DB,118 is a D-Type flip-flop logic integrated circuit manufactured by Nexperia USA Inc., designed for 8-bit positive edge-triggered applications. This component features a master reset function and operates across a supply voltage range of 1.65V to 3.6V. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. Substitute parts must maintain identical electrical performance characteristics and compatible packaging specifications to ensure direct replacement capability.

Substiute Parts

74LVC273DB,118

Nexperia USA Inc.In Stock: 106274LVC273DB,118 Datasheet

Current PartRFQ

74LVC273PW,118

Nexperia USA Inc.In Stock: 514274LVC273PW,118 Datasheet

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74LVC273AT20-13

Diodes IncorporatedIn Stock: 1286774LVC273AT20-13 Datasheet

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SN74LV273ADBR

Texas InstrumentsIn Stock: 2436SN74LV273ADBR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74LVC273DB,118 is determined by the following critical parameters:

Core Functional Requirements:

• Type: D-Type flip-flop with 8-bit configuration
• Trigger Type: Positive edge-triggered
• Function: Master reset capability
• Output Type: Non-inverted
• Number of Elements: 1
• Number of Bits per Element: 8

Electrical Compatibility Criteria:

• Clock Frequency: 230 MHz minimum
• Max Propagation Delay @ 3.3V, 50pF: 8.2ns or better
• Current - Output High, Low: 24mA minimum per channel
• Voltage - Supply: Must support 1.65V ~ 3.6V range
• Current - Quiescent (Iq): 10 µA maximum
• Input Capacitance: 5 pF maximum
• Operating Temperature: -40°C ~ 125°C (TA)

Packaging Compatibility:

• Package Type: 20-SSOP or 20-TSSOP (both 20-pin configurations)
• Mounting Type: Surface Mount

Compliance Requirements:

• RoHS3 Compliant
• REACH Unaffected status

Substitute parts are grouped based on package form factor compatibility. Parts maintaining the identical 20-SSOP package provide direct pin-for-pin replacement. Parts in 20-TSSOP package offer functional equivalence with footprint adaptation requirements.

Parameter Comparison

Engineering Selection Recommendations

Direct Pin-for-Pin Replacement (20-SSOP Package):

The SN74LV273ADBR from Texas Instruments maintains identical 20-SSOP packaging and provides direct socket compatibility with the 74LVC273DB,118. This part is currently in active production status, ensuring long-term availability. All three substitute options carry ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.

Functional Equivalent with Package Adaptation (20-TSSOP Package):

The 74LVC273PW,118 from Nexperia USA Inc. and 74LVC273AT20-13 from Diodes Incorporated both utilize the 20-TSSOP package form factor. These parts require PCB footprint modification but deliver identical electrical performance within the 1.65V to 3.6V supply range. The 74LVC273PW,118 maintains unlimited moisture sensitivity rating (MSL 1), while the 74LVC273AT20-13 specifies MSL 3 with 168-hour limitation.

Active Product Status Advantage:

All three substitute parts maintain active product status, providing superior long-term supply chain stability compared to the obsolete 74LVC273DB,118. Selection should prioritize package compatibility requirements and supply chain availability for your specific application.

Frequently Asked Questions (FAQ)

Q: Can the 74LVC273PW,118 directly replace the 74LVC273DB,118 without PCB modification?

A: No. The 74LVC273PW,118 uses a 20-TSSOP package (0.173" width) while the main part uses 20-SSOP (0.209" width). Although both are 20-pin surface-mount packages, the footprint dimensions differ and require PCB layout changes. The SN74LV273ADBR maintains identical 20-SSOP packaging for direct replacement.

Q: What are the key electrical differences between the 74LVC and 74LV series substitutes?

A: The 74LVC series (74LVC273PW,118 and 74LVC273AT20-13) operates within 1.65V to 3.6V supply range with 24mA output current. The 74LV series (SN74LV273ADBR) operates within 2V to 5.5V range with 12mA output current. Both meet the original part's functional requirements, but the 74LV variant offers extended voltage range at reduced output drive capability.

Q: Is the 74LVC273AT20-13 suitable for applications requiring unlimited shelf life?

A: The 74LVC273AT20-13 specifies MSL 3 with 168-hour moisture sensitivity limitation, requiring controlled storage conditions. For applications requiring unlimited shelf life without moisture control, the 74LVC273PW,118 or SN74LV273ADBR are preferred, both rated MSL 1 (Unlimited).

Q: Do all substitute parts meet the original 8.2ns propagation delay specification?

A: The 74LVC273PW,118 matches the original 8.2ns specification at 3.3V, 50pF. The 74LVC273AT20-13 exceeds this with 7.3ns, providing improved performance. The SN74LV273ADBR specifies 6.2ns but at 5V supply voltage rather than 3.3V, reflecting different operating conditions.

Q: What compliance certifications apply to all substitute options?

A: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original part's environmental and regulatory certifications. This ensures compatibility with current manufacturing and end-of-life disposal requirements.