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CD74HC574M96E4 Equivalent & Substitute Parts
Part Overview
The CD74HC574M96E4 is a D-type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 8-bit capacity, tri-state non-inverted outputs, and positive edge triggering. This component is classified as discontinued at DiGi Electronics, necessitating identification of active equivalent and substitute parts for ongoing design requirements and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | CD74HC574M96E4 |
| Manufacturer | Texas Instruments |
| Series | 74HC |
| Type | D-Type Flip Flop |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Output Type | Tri-State, Non-Inverted |
| Clock Frequency | 60 MHz |
| Max Propagation Delay @ V, Max CL | 28ns @ 6V, 50pF |
| Trigger Type | Positive Edge |
| Voltage - Supply | 2V ~ 6V |
| Current - Output High, Low | 7.8mA, 7.8mA |
| Current - Quiescent (Iq) | 8 µA |
| Input Capacitance | 10 pF |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the CD74HC574M96E4 is determined by the following critical parameters:
Functional Equivalence Requirements:
- Type: D-Type Flip Flop
- Number of Elements: 1
- Number of Bits per Element: 8
- Output Type: Tri-State, Non-Inverted
- Trigger Type: Positive Edge
- Package / Case: 20-SOIC (0.295", 7.50mm Width)
Electrical Compatibility Parameters:
- Voltage - Supply: 2V ~ 6V (minimum requirement)
- Clock Frequency: 60 MHz (minimum requirement)
- Max Propagation Delay @ V, Max CL: 28ns @ 6V, 50pF (maximum acceptable)
- Current - Output High, Low: 7.8mA, 7.8mA (maximum acceptable)
- Operating Temperature: -55°C ~ 125°C (TA) (minimum requirement)
Substitute parts are grouped into two categories: parametric equivalents (identical electrical and functional specifications) and manufacturer-recommended alternatives (meeting or exceeding all critical parameters with active product status).
Parameter Comparison
| Parameter | CD74HC574M96E4 | CD74HC574M96 | CD74HC374M96 | 74AHC574D,118 | 74HC574D,653 | 74HC574D-Q100,118 | MC74HC574ADWG | MC74HC574ADWR2G |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Nexperia USA Inc. | Nexperia USA Inc. | Nexperia USA Inc. | onsemi | onsemi |
| Series | 74HC | 74HC | 74HC | 74AHC | 74HC | 74HC | 74HC | 74HC |
| Type | D-Type | D-Type | D-Type | D-Type | D-Type | D-Type | D-Type | D-Type |
| Number of Bits per Element | 8 | 8 | 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 | Tri-State, Non-Inverted | Tri-State, Non-Inverted |
| Clock Frequency | 60 MHz | 60 MHz | 60 MHz | 115 MHz | 133 MHz | 133 MHz | 35 MHz | 35 MHz |
| Max Propagation Delay @ V, Max CL | 28ns @ 6V, 50pF | 28ns @ 6V, 50pF | 28ns @ 6V, 50pF | 10.6ns @ 5V, 50pF | 26ns @ 6V, 50pF | 26ns @ 6V, 50pF | 27ns @ 6V, 50pF | 27ns @ 6V, 50pF |
| Voltage - Supply | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 2V ~ 5.5V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V |
| Current - Output High, Low | 7.8mA, 7.8mA | 7.8mA, 7.8mA | 7.8mA, 7.8mA | 8mA, 8mA | 7.8mA, 7.8mA | 7.8mA, 7.8mA | 7.8mA, 7.8mA | 7.8mA, 7.8mA |
| Current - Quiescent (Iq) | 8 µA | 8 µA | 8 µA | 4 µA | 8 µA | 8 µA | 4 µA | 4 µA |
| Input Capacitance | 10 pF | 10 pF | 10 pF | 3 pF | 4.6 pF | 4.6 pF | 10 pF | 10 pF |
| Operating Temperature | -55°C ~ 125°C (TA) | -55°C ~ 125°C (TA) | -55°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -55°C ~ 125°C (TA) | -55°C ~ 125°C (TA) |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Discontinued at DiGi Electronics | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Primary Substitute: CD74HC574M96
CD74HC574M96 from Texas Instruments is the direct parametric equivalent to CD74HC574M96E4. This part maintains identical electrical specifications, functional characteristics, and packaging. The primary distinction is product status: CD74HC574M96 is active with 1850 units in stock, whereas the original part is discontinued. This substitute provides seamless compatibility for direct replacement in existing designs.
Secondary Substitutes: 74HC574D,653 and 74HC574D-Q100,118
Both Nexperia USA Inc. parts (74HC574D,653 and 74HC574D-Q100,118) meet all critical electrical parameters and maintain the same 74HC series classification. These parts feature improved propagation delay performance (26ns versus 28ns) and are available in active status with substantial inventory. The 74HC574D-Q100,118 variant includes AEC-Q100 automotive qualification, suitable for applications requiring automotive-grade components.
Alternative with Enhanced Performance: 74AHC574D,118
The 74AHC574D,118 from Nexperia USA Inc. represents an advanced alternative within the 74AHC series. This part delivers superior clock frequency (115 MHz versus 60 MHz) and reduced propagation delay (10.6ns versus 28ns), with lower quiescent current (4 µA versus 8 µA). The supply voltage range is constrained to 2V ~ 5.5V, requiring verification against system requirements. This substitute is suitable for designs where enhanced speed performance is beneficial.
onsemi Alternatives: MC74HC574ADWG and MC74HC574ADWR2G
Both onsemi parts (MC74HC574ADWG and MC74HC574ADWR2G) maintain functional and electrical compatibility with the original part. These components feature reduced quiescent current (4 µA) and are available in active status with adequate inventory. Packaging differs in form factor (Tube versus Cut Tape & Digi-Reel), allowing selection based on procurement and assembly requirements.
Non-Equivalent Part: CD74HC374M96
CD74HC374M96 is functionally distinct from CD74HC574M96E4. While both are D-type flip-flops with 8-bit capacity in identical packaging, the 74HC374 series has different internal logic architecture and is not a direct substitute. This part is listed as a parametric equivalent only and should not be used as a replacement without circuit redesign verification.
Non-Equivalent Part: MC74HC377ADWR2G
MC74HC377ADWR2G is classified as obsolete and features non-inverted output type without tri-state capability, making it functionally incompatible with the original part. This component is not suitable for substitution.
Frequently Asked Questions (FAQ)
Q: Can CD74HC574M96 be used as a direct replacement for CD74HC574M96E4?
A: Yes. CD74HC574M96 is a parametric equivalent with identical electrical specifications, functional characteristics, and 20-SOIC packaging. The only difference is product status: CD74HC574M96 is active while CD74HC574M96E4 is discontinued. Direct substitution is supported without circuit modification.
Q: What is the difference between 74HC574 and 74HC374 series?
A: Both are 8-bit D-type flip-flops in 20-SOIC packaging with tri-state outputs. The internal logic architecture differs: 74HC574 latches data on the positive clock edge, while 74HC374 uses a different latch configuration. These are not interchangeable without circuit redesign. Verify your application requirements before substitution.
Q: Is 74AHC574D,118 compatible with designs specified for 60 MHz operation?
A: 74AHC574D,118 operates at 115 MHz, exceeding the 60 MHz requirement. However, the supply voltage range is 2V ~ 5.5V, compared to 2V ~ 6V for the original part. Verify your system supply voltage before selection. If your system requires 6V operation, this part is not suitable.
Q: What is the significance of AEC-Q100 qualification on 74HC574D-Q100,118?
A: AEC-Q100 qualification indicates the part meets automotive industry reliability and quality standards. This variant is suitable for automotive applications or designs requiring automotive-grade component certification. Non-automotive applications do not require this qualification.
Q: Can I use onsemi MC74HC574ADWG and MC74HC574ADWR2G interchangeably?
A: Both parts are electrically and functionally identical. The difference is packaging format: MC74HC574ADWG is supplied in Tube packaging, while MC74HC574ADWR2G is supplied in Cut Tape & Digi-Reel format. Selection depends on your procurement and assembly process requirements.
Q: Does the reduced quiescent current in onsemi and Nexperia parts affect circuit operation?
A: No. Reduced quiescent current (4 µA versus 8 µA) represents improved power efficiency and does not affect functional operation. This is a beneficial characteristic for power-sensitive applications.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance, consistent with the original CD74HC574M96E4 specification.
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