SN74AHCT74MPWREP Equivalent & Substitute Parts

Part Overview

The SN74AHCT74MPWREP is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments, designed for digital signal processing and sequential logic applications. This device features complementary outputs, positive edge triggering, and set/reset functionality. The part is currently in active production status with 1,036 units available in inventory.

Substitute parts are identified based on functional equivalence within the 74-series logic family. Alternative models maintain the same core logic function, package form factor (14-TSSOP), and pin configuration while potentially offering variations in supply voltage range, propagation delay characteristics, or operating temperature specifications.

Substiute Parts

SN74AHCT74MPWREP

Texas InstrumentsIn Stock: 1094SN74AHCT74MPWREP Datasheet

Current PartRFQ

74AHC74PW,118

Nexperia USA Inc.In Stock: 1168574AHC74PW,118 Datasheet

MFR RecommendedRFQ

74AHC74PW-Q100J

Nexperia USA Inc.In Stock: 300774AHC74PW-Q100J Datasheet

MFR RecommendedRFQ

74AHCT74PW,118

NXP SemiconductorsIn Stock: 1031274AHCT74PW,118 Datasheet

MFR RecommendedRFQ

74VHCT74AMTCX

Fairchild SemiconductorIn Stock: 430874VHCT74AMTCX Datasheet

MFR RecommendedRFQ

MC74VHC74DTG

onsemiIn Stock: 9264MC74VHC74DTG Datasheet

MFR RecommendedRFQ

MC74VHC74DTR2G

onsemiIn Stock: 5735MC74VHC74DTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74AHCT74MPWREP is determined by the following critical parameters:

Functional Requirements:

• Logic type: D-type flip-flop with 2 elements, 1 bit per element
• Output configuration: Complementary outputs
• Trigger mechanism: Positive edge triggered
• Control functions: Set (Preset) and Reset capability

Electrical Compatibility:

• Package form factor: 14-TSSOP (0.173", 4.40mm Width)
• Pin configuration: Identical pinout required
• Output drive capability: 8mA minimum for both high and low states
• Quiescent current: 2 µA maximum

Environmental Specifications:

• Mounting type: Surface Mount
• Moisture sensitivity: MSL 1 (Unlimited)
• Compliance: ROHS3 Compliant, REACH Unaffected

Substitute parts are grouped into two categories based on supply voltage tolerance and propagation delay characteristics:

Category A (74AHCT Series): Maintains 4.5V ~ 5.5V supply range with 140 MHz clock frequency and 8.8 ns propagation delay. Includes 74AHCT74PW,118 and 74VHCT74AMTCX.

Category B (74AHC/74VHC Series): Extends supply voltage range to 2V ~ 5.5V with 115 MHz clock frequency and 9.3 ns propagation delay. Includes 74AHC74PW,118, 74AHC74PW-Q100J, MC74VHC74DTG, and MC74VHC74DTR2G.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Preferred):

74AHCT74PW,118 (NXP Semiconductors) and 74VHCT74AMTCX (Fairchild Semiconductor) maintain identical electrical specifications to the SN74AHCT74MPWREP, including 140 MHz clock frequency, 8.8 ns propagation delay, and 4.5V ~ 5.5V supply voltage range. Both parts are ROHS3 compliant and active in production. The 74AHCT74PW,118 offers extended operating temperature range (-40°C ~ 125°C) compared to the original part's -55°C lower limit. The 74VHCT74AMTCX operates within a narrower temperature range (-40°C ~ 85°C), suitable for applications not requiring extended low-temperature performance.

Extended Supply Voltage Substitutes:

74AHC74PW,118 (Nexperia USA Inc.) and MC74VHC74DTG/MC74VHC74DTR2G (onsemi) extend the supply voltage range to 2V ~ 5.5V, enabling operation in low-voltage applications. These parts operate at 115 MHz with 9.3 ns propagation delay, representing a 25 MHz reduction in clock frequency and 0.5 ns increase in propagation delay. Selection of these parts is appropriate when low-voltage operation is required and the reduced timing specifications are acceptable.

Automotive-Grade Option:

74AHC74PW-Q100J (Nexperia USA Inc.) is qualified to AEC-Q100 automotive standards and suitable for automotive applications requiring extended supply voltage range (2V ~ 5.5V). This part maintains the same electrical characteristics as the standard 74AHC74PW,118.

All substitute parts maintain identical pin configuration, package form factor (14-TSSOP), and core logic functionality. Selection should be based on specific application requirements regarding supply voltage range, operating temperature limits, and timing specifications.

Frequently Asked Questions (FAQ)

Q: Can 74AHC74PW,118 replace SN74AHCT74MPWREP in all applications?

A: 74AHC74PW,118 is functionally equivalent but operates at reduced clock frequency (115 MHz vs. 140 MHz) and increased propagation delay (9.3 ns vs. 8.8 ns). Substitution is valid when application timing requirements accommodate these specifications. The extended supply voltage range (2V ~ 5.5V) provides additional flexibility for low-voltage designs.

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

A: The 74AHCT series maintains a fixed supply voltage range of 4.5V ~ 5.5V with higher clock frequency (140 MHz) and faster propagation delay (8.8 ns). The 74AHC series extends supply voltage range to 2V ~ 5.5V but operates at reduced clock frequency (115 MHz) and slower propagation delay (9.3 ns). Both series maintain identical pin configuration and package form factor.

Q: Are all substitute parts available in the same packaging options?

A: Packaging availability varies by manufacturer and part number. SN74AHCT74MPWREP is supplied in Tape & Reel (TR). Substitute parts are available in Tape & Reel (TR), Cut Tape (CT) & Digi-Reel, or Tube packaging. Verify packaging availability with the specific supplier before component selection.

Q: What is the operating temperature range difference between substitute parts?

A: SN74AHCT74MPWREP operates from -55°C ~ 125°C. Most substitute parts operate from -40°C ~ 125°C, representing a 15°C reduction in low-temperature capability. 74VHCT74AMTCX operates from -40°C ~ 85°C, with further reduction in high-temperature capability. Selection should match application environmental requirements.

Q: Is 74AHC74PW-Q100J suitable for automotive applications?

A: Yes. 74AHC74PW-Q100J is qualified to AEC-Q100 automotive standards and is appropriate for automotive applications. This part maintains the extended supply voltage range (2V ~ 5.5V) and reduced timing specifications of the 74AHC series.

Q: Do all substitute parts maintain the same output drive capability?

A: Yes. All substitute parts maintain 8mA output drive capability for both high and low states, ensuring compatibility with standard TTL/CMOS logic loads.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts are ROHS3 compliant and REACH unaffected. Specific certifications vary by manufacturer; verify compliance documentation for automotive or specialized applications.