74VHC273M Equivalent & Substitute Parts

Part Overview

The 74VHC273M is a D-Type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit configuration and positive edge triggering. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The 74VHC273M operates across a wide supply voltage range of 2V to 5.5V with a maximum clock frequency of 110 MHz, suitable for general-purpose digital logic applications requiring edge-triggered storage.

Substiute Parts

74VHC273M

onsemiIn Stock: 1587974VHC273M Datasheet

Current PartRFQ

SN74AHC273DW

Texas InstrumentsIn Stock: 66426SN74AHC273DW Datasheet

DirectRFQ

SN74AHC273DWR

Texas InstrumentsIn Stock: 3178SN74AHC273DWR Datasheet

DirectRFQ

74AHC273D,118

Nexperia USA Inc.In Stock: 83474AHC273D,118 Datasheet

UpgradeRFQ

74AHCT273D,118

Nexperia USA Inc.In Stock: 286974AHCT273D,118 Datasheet

SimilarRFQ

SN74AHC273NSR

Texas InstrumentsIn Stock: 4360SN74AHC273NSR Datasheet

SimilarRFQ

SN74AHCT273DW

Texas InstrumentsIn Stock: 1749SN74AHCT273DW Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74VHC273M is determined by the following critical parameters:

Core Functional Parameters:

• Type: D-Type flip-flop
• Number of Elements: 1
• Number of Bits per Element: 8
• Trigger Type: Positive Edge
• Output Type: Non-Inverted
• Function: Master Reset

Electrical Performance Parameters:

• Clock Frequency: 110 MHz (minimum requirement)
• Max Propagation Delay @ 5V, 50pF: 11 ns (maximum allowable)
• Voltage - Supply: 2V ~ 5.5V (minimum range requirement)
• Current - Output High, Low: 8mA, 8mA
• Current - Quiescent (Iq): 4 µA

Physical Parameters:

• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are classified into three categories: Direct equivalents (identical electrical and physical specifications), upgrades (enhanced performance or extended temperature range while maintaining core functionality), and similar alternatives (minor parameter variations within acceptable engineering tolerances).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Preferred for Pin-Compatible Replacement):

SN74AHC273DWR (Texas Instruments) and 74AHC273D,118 (Nexperia) are the primary direct substitutes for the 74VHC273M. Both maintain identical electrical specifications including 110 MHz clock frequency, 11 ns propagation delay, and 2V to 5.5V supply voltage range. SN74AHC273DWR carries Active product status with Cut Tape and Digi-Reel packaging, ensuring long-term availability. The 74AHC273D,118 from Nexperia is also Active with Tape & Reel packaging. Both are ROHS3 compliant and MSL Level 1.

Extended Temperature Range Alternatives:

SN74AHC273DW (Texas Instruments) and SN74AHC273NSR (Texas Instruments) provide extended operating temperature to -40°C to 125°C compared to the original -40°C to 85°C specification. These parts maintain full electrical equivalence with 110 MHz operation and 11 ns propagation delay. SN74AHC273NSR features a narrower 20-SOIC package (0.209" width) versus the standard 0.295" width, requiring PCB layout verification before substitution.

Performance-Enhanced Alternatives (74AHCT Series):

74AHCT273D,118 (Nexperia) and SN74AHCT273DW (Texas Instruments) offer improved propagation delay of 9.2 ns at the cost of reduced supply voltage range (4.5V to 5.5V only) and lower clock frequency (75 MHz). These parts are suitable only for applications operating at fixed 5V supply with clock frequencies not exceeding 75 MHz. Both are ROHS3 compliant and Active or Discontinued status respectively.

Selection Criteria:

For designs requiring maximum compatibility and long-term procurement stability, select SN74AHC273DWR (Active status, standard package). For applications requiring extended temperature operation, select SN74AHC273DW or SN74AHC273NSR. For 5V-only designs where improved timing is beneficial, 74AHCT273D,118 is acceptable. All recommended substitutes maintain identical functional behavior, output drive capability, and compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can SN74AHC273DW directly replace 74VHC273M without PCB modifications?

A: Yes. SN74AHC273DW maintains identical pin configuration, package footprint (20-SOIC 0.295" width), and electrical specifications. No PCB layout changes are required. Both parts are ROHS3 compliant with MSL Level 1 rating.

Q: What is the difference between 74AHC and 74AHCT series substitutes?

A: The 74AHC series (SN74AHC273DW, SN74AHC273DWR, 74AHC273D,118, SN74AHC273NSR) operates across 2V to 5.5V supply voltage with 110 MHz clock frequency and 11 ns propagation delay. The 74AHCT series (74AHCT273D,118, SN74AHCT273DW) operates only at 4.5V to 5.5V with 75 MHz clock frequency and 9.2 ns propagation delay. Use 74AHC for designs requiring wide voltage range or clock frequencies above 75 MHz.

Q: Is SN74AHC273NSR compatible with standard PCB layouts designed for 74VHC273M?

A: SN74AHC273NSR uses a narrower 20-SOIC package (0.209" width) compared to the standard 0.295" width of 74VHC273M and most substitutes. Verify PCB footprint dimensions before substitution. Pin configuration remains identical, but package width may affect board layout compatibility.

Q: Why is 74VHC273M listed as obsolete when substitutes are available?

A: The 74VHC273M is obsolete from onsemi, but functionally equivalent parts from Texas Instruments and Nexperia remain in active production. Substitutes ensure design continuity and long-term component availability for legacy system support and new designs.

Q: Are all listed substitutes ROHS3 compliant?

A: Yes. All substitute parts listed (SN74AHC273DW, SN74AHC273DWR, 74AHC273D,118, 74AHCT273D,118, SN74AHC273NSR, SN74AHCT273DW) are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: What is the inventory status for active substitutes?

A: SN74AHC273DWR (Texas Instruments) has 3,162 units in stock with Active product status. 74AHC273D,118 (Nexperia) has 821 units with Active status. SN74AHC273NSR (Texas Instruments) has 4,278 units with Active status. These parts provide immediate procurement availability for production requirements.

Q: Can 74AHCT273D,118 be used in applications originally designed for 74VHC273M?

A: 74AHCT273D,118 is suitable only for applications meeting both conditions: fixed 5V supply voltage operation and clock frequencies not exceeding 75 MHz. The reduced supply voltage range (4.5V to 5.5V versus 2V to 5.5V) and lower clock frequency limit its use to specific 5V-only designs. Verify application requirements before substitution.