74HC74PW,112 Equivalent & Substitute Parts

Part Overview

The 74HC74PW,112 is a dual D-type flip-flop logic integrated circuit manufactured by Nexperia USA Inc. in 14-TSSOP surface mount packaging. This device functions as a Set/Preset and Reset element with complementary outputs, operating across a 2V to 6V supply range with a maximum clock frequency of 82 MHz. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives that maintain functional and electrical compatibility for new designs or production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	74HC74PW,112
Manufacturer	Nexperia USA Inc.
Base Product Number	74HC74
Package / Case	14-TSSOP (0.173", 4.40mm Width)
Type	D-Type Flip-Flop
Number of Elements	2
Number of Bits per Element	1
Output Type	Complementary
Function	Set(Preset) and Reset
Trigger Type	Positive Edge
Voltage - Supply	2V ~ 6V
Clock Frequency	82 MHz
Max Propagation Delay @ 6V, 50pF	37ns
Current - Output High, Low	5.2mA, 5.2mA
Current - Quiescent (Iq)	80 µA
Input Capacitance	4.6 pF
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the 74HC74PW,112 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Base product number: 74HC74
Package type: 14-TSSOP (0.173", 4.40mm Width)
Function: D-Type flip-flop with Set/Preset and Reset
Output type: Complementary
Number of elements: 2
Number of bits per element: 1
Trigger type: Positive Edge
Voltage supply range: 2V ~ 6V
Mounting type: Surface Mount

Acceptable Variation Parameters:

Clock frequency: Substitute parts may operate at different maximum frequencies (35 MHz to 94 MHz) provided the application requirement does not exceed the substitute's rated frequency
Propagation delay: Substitute parts exhibit different propagation delays (17ns to 39ns at 6V, 50pF); selection depends on timing requirements
Quiescent current: Ranges from 2 µA to 80 µA across substitutes
Operating temperature range: Substitutes span -55°C to 125°C; selection based on application thermal requirements
Packaging format: Cut Tape (CT) & Digi-Reel®, Tube, or Tape & Reel (TR) are interchangeable for component procurement

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical pin configuration within the 14-TSSOP package.

Parameter Comparison

Part Number	Manufacturer	Clock Frequency	Propagation Delay @ 6V, 50pF	Quiescent Current (Iq)	Operating Temperature	Product Status	Packaging
74HC74PW,112	Nexperia USA Inc.	82 MHz	37ns	80 µA	-40°C ~ 125°C	Obsolete	Cut Tape (CT) & Digi-Reel®
MC74HC74ADTR2G	onsemi	35 MHz	17ns	2 µA	-55°C ~ 125°C	Active	Cut Tape (CT) & Digi-Reel®
MM74HC74AMTC	onsemi	94 MHz	19ns	4 µA	-40°C ~ 85°C	Active	Tube
MM74HC74AMTCX	onsemi	94 MHz	19ns	4 µA	-40°C ~ 85°C	Active	Cut Tape (CT) & Digi-Reel®
NLV74HC74ADTR2G	onsemi	35 MHz	17ns	2 µA	-55°C ~ 125°C	Obsolete	Cut Tape (CT) & Digi-Reel®
SN74HC74MPWREP	Texas Instruments	60 MHz	30ns	4 µA	-55°C ~ 125°C	Active	Tape & Reel (TR)
SN74HC74PW	Texas Instruments	60 MHz	30ns	4 µA	-40°C ~ 85°C	Discontinued at DiGi Electronics	Tube
SN74HC74PWR	Texas Instruments	60 MHz	30ns	4 µA	-40°C ~ 85°C	Active	Cut Tape (CT) & Digi-Reel®
SN74HC74PWT	Texas Instruments	60 MHz	30ns	4 µA	-40°C ~ 85°C	Discontinued at DiGi Electronics	Tape & Reel (TR)
SN74HC74QPWRG4Q1	Texas Instruments	60 MHz	30ns	4 µA	-40°C ~ 125°C	Active	Tape & Reel (TR)
SN74HC74QPWRQ1	Texas Instruments	60 MHz	39ns	4 µA	-40°C ~ 125°C	Active	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Recommendation for Active Production: SN74HC74PWR (Texas Instruments) is the preferred substitute. This part is currently active with high inventory availability (210,400 pcs), maintains identical electrical specifications within acceptable tolerances, and is available in Cut Tape & Digi-Reel® packaging for standard procurement workflows. Operating temperature range of -40°C to 85°C covers standard industrial applications.

Extended Temperature Range Alternative: For applications requiring -55°C to 125°C operation, select MC74HC74ADTR2G (onsemi) or SN74HC74MPWREP (Texas Instruments). Both parts are active and provide superior low-temperature performance. MC74HC74ADTR2G offers the lowest quiescent current (2 µA) and fastest propagation delay (17ns), beneficial for power-sensitive designs.

High-Frequency Applications: MM74HC74AMTC or MM74HC74AMTCX (onsemi) support the highest clock frequency (94 MHz) among available substitutes, suitable for timing-critical circuits. Both are active products with identical electrical performance.

Compliance Verification: All recommended substitutes maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols. No additional qualification is required from a regulatory standpoint.

Frequently Asked Questions (FAQ)

Q: Can I use SN74HC74PWR as a direct replacement for 74HC74PW,112? A: Yes. Both parts share identical pin configuration, package type (14-TSSOP), and core electrical specifications. The SN74HC74PWR operates within the same 2V to 6V supply range and maintains complementary D-type flip-flop functionality with Set/Preset and Reset control. Operating temperature range differs (-40°C to 85°C vs. -40°C to 125°C), which is acceptable for most applications.

Q: What is the difference between Cut Tape & Digi-Reel® and Tube packaging? A: Packaging format affects procurement and handling only. Cut Tape & Digi-Reel® is standard for automated assembly lines, while Tube packaging is used for manual or lower-volume applications. The integrated circuit itself is electrically identical regardless of packaging format.

Q: Why do substitute parts have different clock frequencies? A: Clock frequency represents the maximum operating speed guaranteed by the manufacturer under specified conditions. The 74HC74PW,112 operates at 82 MHz maximum, while substitutes range from 35 MHz to 94 MHz. Selection depends on your circuit's actual timing requirements. If your design operates below 35 MHz, any substitute is acceptable. If your design requires 82 MHz operation, select MM74HC74AMTC, MM74HC74AMTCX, or verify that the substitute's frequency meets your minimum requirement.

Q: Is quiescent current variation important? A: Quiescent current (Iq) ranges from 2 µA to 80 µA across substitutes. For battery-powered or ultra-low-power applications, select MC74HC74ADTR2G or NLV74HC74ADTR2G (2 µA Iq). For standard applications, differences are negligible.

Q: Can I use parts marked as "Discontinued at DiGi Electronics"? A: SN74HC74PW and SN74HC74PWT are discontinued at DiGi Electronics but may remain available through other distributors. For new designs, prioritize active parts: SN74HC74PWR, SN74HC74QPWRG4Q1, SN74HC74QPWRQ1, MC74HC74ADTR2G, or MM74HC74AMTCX.

Q: What is the significance of the -55°C lower operating temperature in MC74HC74ADTR2G? A: MC74HC74ADTR2G and SN74HC74MPWREP support operation down to -55°C, compared to -40°C for most other substitutes. This extended range is required only for aerospace, military, or extreme cold-weather applications. Standard industrial designs operate within -40°C to 85°C.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing processes and storage requirements.

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