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CD74HCT574PWR Equivalent & Substitute Parts
Part Overview
The CD74HCT574PWR is a D-type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 8-bit positive edge triggering in a 20-TSSOP surface mount package. This part is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching functional specifications, electrical parameters, and package compatibility to support design flexibility, inventory optimization, and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Part Number | CD74HCT574PWR |
| Manufacturer | Texas Instruments |
| Category | Logic |
| Type | D-Type Flip Flop |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Output Type | Tri-State, Non-Inverted |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for the CD74HCT574PWR are qualified based on the following criteria:
Core Functional Equivalence:
- D-Type flip-flop architecture with 1 element and 8-bit configuration
- Positive edge trigger mechanism
- Tri-state, non-inverted output type
- 20-TSSOP package form factor
Electrical Parameter Compatibility:
- Supply voltage range: 4.5V ~ 5.5V
- Quiescent current (Iq): 8 µA nominal
- Input capacitance: 10 pF
- Output current capability: 6mA to 7.2mA (high and low)
Compliance & Certification:
- ROHS3 compliance
- Active product status
- MSL 1 (Unlimited moisture sensitivity level)
Substitutes are grouped by packaging type (Tape & Reel, Cut Tape, Tube) and manufacturer designation (standard, automotive-qualified). All listed substitutes maintain functional and electrical compatibility within the specified parameter ranges.
Parameter Comparison
| Parameter | CD74HCT574PWR (TI) | MM74HCT574MTCX (onsemi) | 74HCT574PW,118 (Nexperia) | 74HCT574PW-Q100,11 (Nexperia) | MC74HCT574ADTR2G (onsemi) | MM74HCT574MTC (onsemi) |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | onsemi | Nexperia USA Inc. | Nexperia USA Inc. | onsemi | onsemi |
| Packaging | Tape & Reel (TR) | Cut Tape (CT) & Digi-Reel® | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tube |
| Type | D-Type | D-Type | D-Type | D-Type | D-Type | D-Type |
| Number of Elements | 1 | 1 | 1 | 1 | 1 | 1 |
| Number of Bits per Element | 8 | 8 | 8 | 8 | 8 | 8 |
| Output Type | Tri-State, Non-Inverted | Tri-State, Non-Inverted | Tri-State, Non-Inverted | Tri-State, Non-Inverted | Tri-State, Non-Inverted | Tri-State, Non-Inverted |
| Clock Frequency | 60 MHz | 33 MHz | 76 MHz | 76 MHz | 30 MHz | 33 MHz |
| Max Propagation Delay @ V, Max CL | 33ns @ 4.5V, 50pF | 30ns @ 5V, 50pF | 33ns @ 4.5V, 50pF | 33ns @ 4.5V, 50pF | 30ns @ 5V, 50pF | 30ns @ 5V, 50pF |
| Current - Output High, Low | 6mA, 6mA | 7.2mA, 7.2mA | 6mA, 6mA | 6mA, 6mA | 6mA, 6mA | 7.2mA, 7.2mA |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Current - Quiescent (Iq) | 8 µA | 8 µA | 8 µA | 8 µA | 4 µA | 8 µA |
| Input Capacitance | 10 pF | 10 pF | 4.6 pF | 4.6 pF | 10 pF | 10 pF |
| Operating Temperature | -55°C ~ 125°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -55°C ~ 125°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) | 20-TSSOP (0.173", 4.40mm Width) | 20-TSSOP (0.173", 4.40mm Width) | 20-TSSOP (0.173", 4.40mm Width) | 20-TSSOP (0.173", 4.40mm Width) | 20-TSSOP (0.173", 4.40mm Width) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active | Active | Active | Active | Active |
| Grade | Standard | Standard | Standard | Automotive | Standard | Standard |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility):
74HCT574PW,118 (Nexperia) and 74HCT574PW-Q100,11 (Nexperia) are direct functional equivalents with identical propagation delay specifications and output current ratings. The Q100,11 variant includes automotive-grade qualification (AEC-Q100) for applications requiring automotive compliance. Both are supplied in Tape & Reel packaging.
MC74HCT574ADTR2G (onsemi) maintains full functional compatibility with extended operating temperature range (-55°C ~ 125°C) matching the CD74HCT574PWR. This part features reduced quiescent current (4 µA) and is supplied in Tape & Reel packaging.
Secondary Substitutes (Parameter Variations):
MM74HCT574MTCX (onsemi) and MM74HCT574MTC (onsemi) are functionally equivalent with reduced operating temperature range (-40°C ~ 85°C). MM74HCT574MTCX is supplied in Cut Tape & Digi-Reel® packaging; MM74HCT574MTC is supplied in Tube packaging. Both feature slightly elevated output current (7.2mA).
Selection Criteria:
- For extended temperature applications (-55°C operation required): MC74HCT574ADTR2G or CD74HCT574PWR
- For automotive-qualified designs: 74HCT574PW-Q100,11
- For standard industrial applications with standard temperature range: 74HCT574PW,118
- For alternative packaging requirements: MM74HCT574MTCX (Cut Tape) or MM74HCT574MTC (Tube)
All substitutes maintain ROHS3 compliance and Active product status.
Frequently Asked Questions (FAQ)
Q: Can MM74HCT574MTCX replace CD74HCT574PWR in all applications?
A: MM74HCT574MTCX is functionally compatible for applications operating within -40°C ~ 85°C temperature range. The CD74HCT574PWR supports extended operation to -55°C. Verify application temperature requirements before substitution.
Q: What is the difference between 74HCT574PW,118 and 74HCT574PW-Q100,11?
A: Both parts are electrically identical. The Q100,11 variant includes AEC-Q100 automotive qualification and is designated for automotive applications. Select based on application requirements.
Q: Are all substitute parts pin-compatible with CD74HCT574PWR?
A: Yes. All listed substitutes use the 20-TSSOP package with identical pinout and functional behavior.
Q: Does packaging type (Tape & Reel vs. Tube vs. Cut Tape) affect electrical performance?
A: No. Packaging type affects handling, storage, and assembly processes only. Electrical specifications remain identical across packaging variants.
Q: Which substitute has the lowest quiescent current?
A: MC74HCT574ADTR2G features 4 µA quiescent current, compared to 8 µA for most other variants. This may be relevant for low-power applications.
Q: Can I use MM74HCT574MTC in a design requiring -55°C operation?
A: No. MM74HCT574MTC operating temperature range is -40°C ~ 85°C. For -55°C operation, use CD74HCT574PWR or MC74HCT574ADTR2G.
Q: Are all substitutes ROHS3 compliant?
A: Yes. All listed substitute parts are ROHS3 compliant and carry Active product status.
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