SN74LVC74ADRE4 Equivalent & Substitute Parts

Part Overview

The SN74LVC74ADRE4 is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments, housed in a 14-SOIC package. This device provides two independent D-type flip-flops with Set (Preset) and Reset functions, operating at clock frequencies up to 150 MHz with complementary outputs. The SN74LVC74ADRE4 is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

SN74LVC74ADRE4

Texas InstrumentsIn Stock: 730SN74LVC74ADRE4 Datasheet

Current PartRFQ

SN74LVC74ADR

Texas InstrumentsIn Stock: 2234SN74LVC74ADR Datasheet

Parametric EquivalentRFQ

SN74LVC74ADT

Texas InstrumentsIn Stock: 2719SN74LVC74ADT Datasheet

Parametric EquivalentRFQ

74LCX74M

Fairchild SemiconductorIn Stock: 138174LCX74M Datasheet

MFR RecommendedRFQ

74LVC74AD,118

NXP SemiconductorsIn Stock: 214174LVC74AD,118 Datasheet

MFR RecommendedRFQ

MC74LCX74DG

onsemiIn Stock: 2536MC74LCX74DG Datasheet

MFR RecommendedRFQ

MC74LCX74DR2G

onsemiIn Stock: 10470MC74LCX74DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74LVC74ADRE4 are classified based on strict electrical and mechanical compatibility. The following parameters determine substitution eligibility:

Critical Parameters for Substitution:

• Dual D-type flip-flop configuration (2 elements, 1 bit per element)
• Complementary output type
• Positive edge trigger
• 14-SOIC package footprint (0.154", 3.90mm Width)
• Surface mount mounting type
• Clock frequency capability of 150 MHz or greater
• Set (Preset) and Reset functionality

Acceptable Variation Parameters:

• Voltage supply range (minimum 1.65V acceptable; maximum 3.6V or higher acceptable)
• Propagation delay (5.2 ns at 3.3V, 50pF or faster acceptable)
• Operating temperature range (-40°C to 85°C or -40°C to 125°C both acceptable)
• Packaging format (Cut Tape, Tape & Reel, Tube, or Bulk all acceptable for equivalent function)
• Input capacitance (4 pF to 7 pF acceptable range)

Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical specifications, different packaging) and Manufacturer Recommended Equivalents (functionally equivalent with minor specification variations within acceptable engineering tolerances).

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalents (Identical Electrical Specifications):

SN74LVC74ADR and SN74LVC74ADT are direct parametric equivalents manufactured by Texas Instruments. Both maintain identical electrical specifications to the SN74LVC74ADRE4, including 5.2 ns propagation delay, 1.65V to 3.6V supply voltage range, and -40°C to 125°C operating temperature. The difference between these two parts is packaging format: SN74LVC74ADR is supplied in Cut Tape and Digi-Reel format, while SN74LVC74ADT is supplied in Tape & Reel format. Both are ROHS3 compliant with MSL 1 rating and are currently in active production status.

Manufacturer Recommended Equivalents (Functionally Compatible with Minor Variations):

74LVC74AD,118 (NXP Semiconductors) provides identical electrical performance to the main part with an extended lower voltage supply range (1.2V minimum versus 1.65V minimum) and slightly lower input capacitance (4 pF versus 5 pF). This part is ROHS3 compliant and suitable for applications requiring lower voltage operation.

74LCX74M (Fairchild Semiconductor) and MC74LCX74DG / MC74LCX74DR2G (onsemi) represent the 74LCX series alternative. These parts operate with a minimum supply voltage of 2V (versus 1.65V for 74LVC series) and exhibit 7 ns propagation delay (versus 5.2 ns). Operating temperature range is limited to -40°C to 85°C. These parts are functionally equivalent for applications not requiring the extended temperature range or faster propagation delay of the 74LVC series. MC74LCX74DR2G offers the highest inventory availability (10,387 pcs) among all substitutes.

Selection Criteria:

For direct replacement with no design modifications, select SN74LVC74ADR or SN74LVC74ADT based on packaging requirements. For applications requiring extended lower voltage operation, select 74LVC74AD,118. For cost-optimized designs where 7 ns propagation delay is acceptable and operating temperature does not exceed 85°C, select MC74LCX74DR2G or MC74LCX74DG. All substitute parts maintain identical pin configuration and 14-SOIC package footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use SN74LVC74ADR as a direct replacement for SN74LVC74ADRE4?

A: Yes. SN74LVC74ADR is a parametric equivalent with identical electrical specifications. The only difference is packaging format (Cut Tape/Digi-Reel versus the original Digi-Reel format). Pin configuration, electrical performance, and package footprint are identical.

Q: What is the difference between SN74LVC74ADR and SN74LVC74ADT?

A: Both are parametric equivalents with identical electrical specifications. SN74LVC74ADR is supplied in Cut Tape and Digi-Reel format, while SN74LVC74ADT is supplied in Tape & Reel format. Selection depends on your assembly process requirements.

Q: Can I use MC74LCX74DR2G instead of the original SN74LVC74ADRE4?

A: MC74LCX74DR2G is functionally compatible but with specification differences. Propagation delay is 7 ns (versus 5.2 ns), minimum supply voltage is 2V (versus 1.65V), and maximum operating temperature is 85°C (versus 125°C). Use this part only if your application tolerates these variations.

Q: What does "Parametric Equivalent" mean?

A: A parametric equivalent part has identical electrical specifications, pin configuration, and package footprint as the original part. It can be used as a direct replacement without design modifications.

Q: What does "Manufacturer Recommended Equivalent" mean?

A: A manufacturer recommended equivalent is functionally compatible but may have minor specification variations (such as propagation delay, voltage range, or temperature range). These parts are suitable for applications where the specification variations do not impact circuit performance.

Q: Are all substitute parts ROHS3 compliant?

A: SN74LVC74ADR, SN74LVC74ADT, 74LVC74AD,118, MC74LCX74DG, and MC74LCX74DR2G are all ROHS3 compliant. 74LCX74M compliance status is not specified in available documentation.

Q: What is the MSL (Moisture Sensitivity Level) rating?

A: SN74LVC74ADR, SN74LVC74ADT, 74LVC74AD,118, MC74LCX74DG, and MC74LCX74DR2G all have MSL 1 rating, indicating unlimited shelf life without moisture control requirements. 74LCX74M MSL rating is not specified.

Q: Can I mix different substitute parts in the same design?

A: All substitute parts maintain identical pin configuration and 14-SOIC package footprint. However, mixing 74LVC series (5.2 ns propagation delay, 1.65V minimum supply) with 74LCX series (7 ns propagation delay, 2V minimum supply) in the same circuit may introduce timing inconsistencies. Use parts from the same series for timing-critical applications.

Q: Which substitute part has the best availability?

A: MC74LCX74DR2G has the highest inventory availability at 10,387 pcs in stock.