74HC174DB,112 Equivalent & Substitute Parts

Part Overview

The 74HC174DB,112 is a D-Type flip-flop logic integrated circuit manufactured by Nexperia USA Inc., designed for digital signal processing and sequential logic applications. This component features 1 element with 6 bits per element, positive edge triggering, and master reset functionality. The part is currently active in production with 834 pieces in stock. Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when sourcing from different suppliers is needed to optimize supply chain logistics.

Substiute Parts

74HC174DB,112

Nexperia USA Inc.In Stock: 92774HC174DB,112 Datasheet

Current PartRFQ

SN74HC174DBR

Texas InstrumentsIn Stock: 2948SN74HC174DBR Datasheet

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SN74HC174PW

Texas InstrumentsIn Stock: 2954SN74HC174PW Datasheet

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SN74HC174PWR

Texas InstrumentsIn Stock: 3239SN74HC174PWR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC174DB,112 is determined by strict adherence to the following electrical and mechanical parameters:

Core Functional Parameters (Must Match):

• Series: 74HC
• Type: D-Type Flip Flop
• Number of Elements: 1
• Number of Bits per Element: 6
• Function: Master Reset
• Output Type: Non-Inverted
• Trigger Type: Positive Edge
• Voltage Supply Range: 2V ~ 6V
• Current Output Specifications: 5.2 mA (High and Low)
• Current Quiescent: 8 µA

Acceptable Variation Parameters:

• Clock Frequency: Substitute parts may operate at lower frequencies (50 MHz vs. 107 MHz) without affecting functional compatibility
• Max Propagation Delay: Substitute parts with equal or lower delay values (27 ns vs. 28 ns) maintain timing compatibility
• Operating Temperature Range: Substitute parts with narrower ranges (-40°C ~ 85°C vs. -40°C ~ 125°C) are acceptable for applications not requiring extended temperature operation
• Input Capacitance: Minor variations (3 pF vs. 4.6 pF) do not affect circuit operation
• Package Format: 16-SSOP and 16-TSSOP packages are mechanically compatible with appropriate PCB layout adjustments

Compliance Parameters (Must Match):

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

Parameter Comparison

Engineering Selection Recommendations

SN74HC174DBR (Texas Instruments): This part is functionally equivalent to the 74HC174DB,112 with identical package format (16-SSOP). Both parts maintain the same electrical specifications for output current, supply voltage, and quiescent current. The SN74HC174DBR operates at 50 MHz clock frequency compared to 107 MHz for the primary part, with marginally improved propagation delay (27 ns vs. 28 ns). Operating temperature range is limited to -40°C ~ 85°C. This part is actively produced and available in Tape & Reel packaging format. Selection is appropriate for applications not requiring extended temperature operation above 85°C.

SN74HC174PW (Texas Instruments): This part provides functional equivalence with a different package format (16-TSSOP, 0.173" width vs. 0.209" width). The narrower package footprint requires PCB layout modification. This part is discontinued at DiGi Electronics and should not be selected for new designs requiring long-term availability. Operating temperature range is -40°C ~ 85°C.

SN74HC174PWR (Texas Instruments): This part is functionally equivalent with 16-TSSOP package format (0.173" width). Electrical specifications match the SN74HC174PW variant. This part maintains active production status and is available in Tape & Reel packaging. Operating temperature range is -40°C ~ 85°C. Selection is appropriate when narrower package footprint is required and extended temperature operation above 85°C is not necessary.

All substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage processes.

Frequently Asked Questions (FAQ)

Q: Can the SN74HC174DBR replace the 74HC174DB,112 in existing designs?

A: Yes. Both parts share identical package format (16-SSOP), electrical output specifications (5.2 mA), supply voltage range (2V ~ 6V), and quiescent current (8 µA). The SN74HC174DBR operates at lower clock frequency (50 MHz vs. 107 MHz) and has improved propagation delay (27 ns vs. 28 ns). No PCB modifications are required. Verify that your application does not require operation above 85°C, as the SN74HC174DBR is rated to -40°C ~ 85°C.

Q: What is the difference between 16-SSOP and 16-TSSOP packages?

A: Both are surface-mount packages with 16 pins. The 16-SSOP (Shrink Small Outline Package) has a body width of 0.209" (5.30mm). The 16-TSSOP (Thin Shrink Small Outline Package) has a narrower body width of 0.173" (4.40mm). Pin pitch and electrical connections are identical. PCB layout and footprint must be adjusted when switching between these package types.

Q: Why does the 74HC174DB,112 have a higher clock frequency specification than the Texas Instruments substitutes?

A: Clock frequency specifications reflect the maximum operating frequency at which the device maintains specified electrical characteristics. The 74HC174DB,112 is specified at 107 MHz, while Texas Instruments parts are specified at 50 MHz. Both operate correctly at lower frequencies. Selection of a substitute with lower frequency specification does not affect functionality in applications operating below the substitute's rated frequency.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 74HC174DB,112 and all listed substitute parts (SN74HC174DBR, SN74HC174PW, SN74HC174PWR) are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating. All parts are suitable for standard manufacturing processes without additional handling requirements.

Q: Which substitute part should I select for new production designs?

A: For new designs requiring identical package format and maximum availability, select the SN74HC174DBR (16-SSOP, active production status). For designs where narrower package footprint is beneficial, select the SN74HC174PWR (16-TSSOP, active production status). Avoid the SN74HC174PW due to discontinued status. Verify operating temperature requirements do not exceed -40°C ~ 85°C for all Texas Instruments substitutes.

Q: What is the impact of the 1 ns propagation delay difference between the main part and substitutes?

A: The 74HC174DB,112 specifies 28 ns maximum propagation delay at 6V with 50 pF load, while all Texas Instruments substitutes specify 27 ns. This 1 ns difference is negligible for most digital logic applications. Timing-critical applications should verify that system timing margins accommodate the substitute part's specifications.

Q: Can I use the SN74HC174PW for new designs?

A: No. The SN74HC174PW is discontinued at DiGi Electronics and should not be selected for new production designs. Use the SN74HC174PWR instead, which provides identical electrical specifications and active production status with 16-TSSOP packaging.