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Texas Instruments CD74AC574M96
- Part No.:
- CD74AC574M96
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CD74AC574M96.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,254
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Product details
Overview
CD74AC574M96 from Texas Instruments is an octal D-type, 3-state, positive-edge-triggered flip-flop in a 20-pin SOIC (DW) package. It operates from 1.5 V to 5.5 V, delivers ±24 mA output drive, supports up to 143 MHz clock frequency at 5 V, and features balanced propagation delays for synchronous data latching in bus interface applications.
For engineers reviewing the CD74AC574M96 datasheet, CD74AC574M96 pinout, CD74AC574M96 application, or CD74AC574M96 equivalent, this device serves as a high-speed, low-power register for bidirectional data buffering, address/data bus isolation, and latch-based control logic in industrial and embedded systems requiring robust noise immunity and 50-Ω transmission-line drive capability.
Technical Context
The CD74AC574M96 implements eight independent D-type flip-flops with a common clock (CLK) and active-low 3-state output enable (OE). Each flip-flop captures input data (D0–D7) on the rising edge of CLK and holds it until the next clock transition, while OE independently places all outputs (Q0–Q7) into high-impedance state without affecting internal register contents.
It uses RCA Advanced CMOS process technology, providing SCR-latchup resistance, balanced tPLH/tPHL propagation delays (e.g., 2.9 ns typical at 5 V), and static electrical characteristics validated across –55°C to +125°C. Its AC-series design ensures 30% supply-level noise immunity and compatibility with TTL input thresholds when operated at 5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | Advanced CMOS (AC series), compatible with TTL input levels at 5 V |
| Supply Voltage Range | 1.5 V to 5.5 V - enables single-supply operation in mixed-voltage systems |
| Max Clock Frequency | 143 MHz at VCC = 5 V, TA = 25°C - supports high-throughput data capture |
| Output Drive | ±24 mA per output - drives 15 FAST ICs or 50 Ω transmission lines directly |
| Propagation Delay | 2.9 ns typical (CLK to Q, VCC = 5 V) - ensures tight timing margins in fast bus interfaces |
| Operating Temperature | –55°C to +125°C - qualified for extended industrial and military environments |
| ESD Rating | ±2000 V HBM - meets JEDEC JS-001 for robust handling in manufacturing |
Pinout & Package
CD74AC574M96 is housed in a 20-pin SOIC (DW) package with 12.80 mm × 10.30 mm nominal footprint, 2.65 mm max height, and RoHS-compliant NiPdAu (NIPDAU) lead finish. The package is moisture sensitivity level 1 (MSL-1), rated for peak reflow at 260°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Active-low output enable | Asserting LOW enables Q0–Q7; HIGH forces all outputs to high-impedance - decouples latching from bus control |
| 2–9, 12, 15–16, 19 (Q0–Q7) | Registered data outputs | Non-inverted, 3-state outputs synchronized to CLK edge - used for bus driving or temporary storage |
| 3–4, 7–8, 13–14, 17–18 (D0–D7) | Data inputs | Independent D inputs feeding each flip-flop - accepts asynchronous data prior to clock edge |
| 11 (CLK) | Positive-edge clock | Rising-edge-triggered sampling - defines precise data capture instant for deterministic timing |
| 10 (GND) | Ground reference | Primary return path for all signals and power - requires low-inductance connection to minimize noise |
| 20 (VCC) | Power supply | Single supply pin supporting 1.5–5.5 V - must be bypassed with 0.1 µF capacitor near the pin |
Key Features
| Feature | Design Value |
|---|---|
| SCR-latchup-resistant process | Prevents destructive latch-up under overvoltage or ESD stress - critical for reliability in harsh environments |
| Balanced propagation delays | tPLH and tPHL match within 0.2 ns (typ.) - eliminates skew-induced timing violations in parallel data paths |
| 1.5 V to 5.5 V operation | Supports legacy 5 V, modern 3.3 V, and ultra-low-power 1.8 V systems without level shifters |
| ±24 mA output drive | Directly interfaces with FAST logic or terminates 50 Ω lines - reduces external driver component count |
| 30% supply noise immunity | Rejects noise up to 30% of VCC on inputs - improves signal integrity in electrically noisy industrial PCBs |
Applications
| Industrial Bus Interface | Microcontroller Peripheral Latch |
|---|---|
|
Use Scenario: Isolating and latching address/data signals between a microcontroller and external memory or I/O peripherals. IC Role / Device Role / Timing Role: Acts as an octal transparent latch synchronizing burst transfers using a shared clock and independent OE control. Use Value: Enables clean separation of read/write cycles and prevents bus contention during multi-cycle transactions. |
Use Scenario: Capturing parallel sensor or actuator data before serial transmission to a host MCU. IC Role / Device Role / Timing Role: Provides edge-triggered registration of 8-bit analog-to-digital converter outputs or digital sensor streams. Use Value: Eliminates metastability risk by synchronizing asynchronous inputs to the system clock domain. |
| Test Equipment Signal Conditioning | Programmable Logic Control Register |
|
Use Scenario: Buffering and gating high-speed digital test patterns in ATE systems with variable voltage rails. IC Role / Device Role / Timing Role: Serves as a programmable output stage with 3-state control for pattern generation and signal routing. Use Value: Supports multiple voltage domains (1.5–5.5 V) and drives 50 Ω coaxial cables without external line drivers. |
Use Scenario: Holding configuration bits or status flags in PLC I/O modules operating across wide temperature ranges. IC Role / Device Role / Timing Role: Functions as a nonvolatile register bank storing real-time control states during power transitions. Use Value: Maintains operational integrity from –55°C to +125°C with guaranteed timing and leakage performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AC574N | Same AC logic family, identical pinout, but in 20-pin PDIP (N) package with 24.33 mm × 9.4 mm footprint | Preferred for through-hole prototyping or legacy board designs; lacks MSL-1 tape-and-reel support | Select when manual assembly, breadboarding, or socket-based testing is required |
| CD74ACT574M96 | TTL-compatible input thresholds (VIH = 2 V min), higher drive (±24 mA), same SOIC-20 package and pinout | Better suited for mixed-signal systems interfacing with legacy 5 V TTL logic; slightly higher ICC at 5 V | Choose when interfacing with standard TTL devices or where stricter input voltage thresholds are mandated |
Compared with CD74AC574M96, SN74AC574N offers identical AC logic behavior but in a larger through-hole package, while CD74ACT574M96 provides TTL-compatible inputs at the cost of reduced low-voltage flexibility - both require no PCB redesign but differ in thermal profile, assembly method, and input threshold compliance.
Availability
CD74AC574M96 is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded control applications requiring stable component supply, long-term lifecycle assurance, and extended temperature range support.
Supply support for CD74AC574M96 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of experience in high-reliability industrial and aerospace components.
The CD74AC574M96 belongs to TI's CD74AC logic family, designed specifically for high-speed, low-power data latching and bus isolation in mission-critical systems operating across extreme temperature ranges.
FAQ
What is the maximum clock frequency supported by the CD74AC574M96?
The CD74AC574M96 supports a maximum clock frequency of 143 MHz at VCC = 5 V and TA = 25°C, dropping to 125 MHz at –55°C to +125°C. This rating is verified per TI's switching characteristics table (Section 4.7) and assumes proper load conditions (CL = 50 pF, tr/tf = 3 ns). The CD74AC574M96 maintains functional operation down to 1.5 V, though maximum frequency decreases to 11 MHz at 1.5 V.
Does the CD74AC574M96 support 3.3 V operation?
Yes, the CD74AC574M96 fully supports 3.3 V operation within its specified 1.5 V to 5.5 V supply range. At 3.3 V, it delivers 101 MHz maximum clock frequency, ±24 mA output drive, and maintains balanced propagation delays (tPLH/tPHL ≈ 4 ns typical). Input thresholds scale with VCC, ensuring reliable logic recognition without external level shifting.
What is the function of Pin 1 (OE) on the CD74AC574M96?
Pin 1 (OE) is the active-low output enable terminal of the CD74AC574M96. When OE is LOW, the registered outputs Q0–Q7 are enabled and reflect the stored D-input values; when OE is HIGH, all eight outputs enter high-impedance state regardless of clock or data activity. This allows independent bus arbitration without disrupting internal register state.
Is the CD74AC574M96 pin-compatible with the CD74ACT574M96?
Yes, the CD74AC574M96 is pin-compatible with the CD74ACT574M96 - both use identical 20-pin SOIC (DW) packages and share identical pin functions, including CLK, OE, D0–D7, Q0–Q7, VCC, and GND. However, they differ in input threshold specifications (AC: VIH = 3.85 V min at 5 V; ACT: VIH = 2 V min), so system-level logic compatibility must be verified.
What packaging and reel information applies to the CD74AC574M96?
The CD74AC574M96 ships in tape-and-reel format: 2000 units per reel, 330 mm reel diameter, 24.4 mm reel width, Q1 pin-1 quadrant orientation, and MSL-1 rating for unlimited floor life at ≤30°C/60% RH. The SOIC (DW) package has 12.80 mm × 10.30 mm body dimensions, 2.65 mm max height, and NiPdAu (NIPDAU) lead finish compliant with RoHS Directive 2011/65/EU.
CD74AC574M96 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 125 MHz
- Max Propagation Delay @ V, Max CL:
- 10.8ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.5V ~ 5.5V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 10 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
CD74AC574M96 FAQ
1.How can I place an order for CD74AC574M96 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74AC574M96 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CD74AC574M96 reliable?
The price and inventory of CD74AC574M96 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74AC574M96 is usually 5 days.
3.What payment methods are accepted for CD74AC574M96?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74AC574M96 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74AC574M96?
CD74AC574M96 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74AC574M96 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CD74AC574M96?
For technical support, including CD74AC574M96 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74AC574M96 requirements.
6.How does Aetrix verify that CD74AC574M96 is sourced from the original manufacturer or authorized distributors?
All CD74AC574M96 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CD74AC574M96 meets industry standards.
7.What is the process for return or replacement of CD74AC574M96?
All CD74AC574M96 units undergo pre-shipment inspection (PSI). If there is an issue with CD74AC574M96, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CD74AC574M96 part is unused and in its original packaging.
Return procedure for CD74AC574M96:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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