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Nexperia USA Inc. 74HC574D,652
- Part No.:
- 74HC574D,652
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74HC574D,652.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,942
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Product details
Overview
74HC574D,652 from Nexperia is an 8-bit positive-edge-triggered D-type flip-flop with 3-state outputs, designed for bus-oriented digital systems requiring synchronized data latching and controlled output driving. It operates across 2.0 V to 6.0 V supply, features independent clock (CP) and active-low output enable (OE), supports -40 °C to +125 °C ambient range, and delivers 14 ns propagation delay at 6.0 V - used in microcontroller I/O expansion, address/data bus buffering, and industrial control logic.
For engineers reviewing the 74HC574D,652 datasheet, 74HC574D,652 pinout, 74HC574D,652 application, or 74HC574D,652 equivalent, this device serves as a high-noise-immunity, CMOS-level octal register for synchronous data capture and tri-state bus management in embedded and industrial digital designs.
Technical Context
The 74HC574D,652 implements eight independent D-type latches triggered on the LOW-to-HIGH transition of CP, with set-up time as low as 10 ns and hold time of 5 ns at 6.0 V. Its 3-state outputs are controlled solely by OE - toggling OE does not affect internal flip-flop states, enabling glitch-free bus sharing.
Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors. Static input thresholds (VIH = 4.2 V, VIL = 1.8 V at VCC = 6.0 V) and dynamic parameters (tpd = 14–26 ns, fmax = 24–35 MHz) confirm robust timing behavior across voltage and temperature extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HC - CMOS-compatible, TTL-input compatible only in HCT variant; this part is HC, so uses CMOS-level inputs. |
| Supply Voltage Range | 2.0 V to 6.0 V - enables direct interface with 3.3 V and 5 V systems without level shifters. |
| Propagation Delay (tpd) | 14 ns (typ) at VCC = 6.0 V, CL = 50 pF - ensures fast data registration for high-speed bus cycles. |
| Maximum Clock Frequency | 35 MHz (typ) at VCC = 6.0 V - supports real-time sampling in mid-speed digital controllers. |
| Output Drive Strength | ±7.8 mA (VOH/VOL) at VCC = 6.0 V - sufficient to drive 10 LS-TTL loads or 20+ CMOS inputs. |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood, motor control, and industrial PLC environments. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - enhances reliability in automated assembly and field-deployed equipment. |
Pinout & Package
74HC574D,652 is supplied in SO20 (SOT163-1) plastic small outline package: 20-pin, 7.5 mm body width, 1.27 mm pitch, gull-wing leads.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (Output Enable) | Active-low control: HIGH forces all Qn outputs into high-impedance state; no effect on internal latch states. |
| 2–9 | D0–D7 (Data Inputs) | Asynchronous parallel data inputs; sampled on rising edge of CP if setup/hold times met. |
| 10 | GND | Reference ground for all signals and power return path. |
| 11 | CP (Clock) | Rising-edge-sensitive trigger; latches Dn values synchronously across all 8 bits. |
| 12–19 | Q0–Q7 (Outputs) | 3-state non-inverting outputs; driven only when OE = LOW; otherwise high-Z. |
| 20 | VCC | Positive supply rail; must be decoupled locally with 100 nF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2.0 V to 6.0 V operation eliminates need for separate voltage rails in mixed-supply systems. |
| CMOS Low Power | ICC ≤ 8 μA (typ) at 25 °C - enables battery-backed or energy-constrained applications. |
| High Noise Immunity | VIH/VIL margins ≥ 1.2 V at VCC = 4.5 V - rejects EMI-induced glitches on control and data lines. |
| Latch-up Robustness | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up during transient overvoltage events. |
| Bus-Oriented 3-State | Common OE pin allows coordinated release of 8-bit data onto shared buses without contention. |
Applications
| Microcontroller I/O Expansion | Industrial Bus Buffering |
|---|---|
Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ MCU in a programmable logic controller. IC Role / Device Role / Timing Role: Synchronizes parallel sensor data reads and drives discrete output banks via shared 8-bit data bus. Use Value: Enables deterministic, clock-aligned sampling and output update without software bit-banging overhead. |
Use Scenario: Isolating and regenerating address/data signals between FPGA and legacy peripheral ASIC on a PCB backplane. IC Role / Device Role / Timing Role: Acts as a registered bus transceiver - latches incoming data on rising CP, then drives it onto downstream bus when OE is asserted. Use Value: Eliminates signal integrity degradation from long trace lengths and fan-out loading. |
| Test Equipment Digital Pattern Generator | Automated Test Fixture Control |
Use Scenario: Generating precise, repeatable 8-bit stimulus patterns for IC functional testing. IC Role / Device Role / Timing Role: Stores pattern words from serial shift register and releases them in parallel on each CP edge. Use Value: Provides sub-30 ns timing resolution and deterministic edge alignment across all 8 outputs. |
Use Scenario: Controlling solenoid valves, relays, and LED indicators in a production-line test jig. IC Role / Device Role / Timing Role: Latches command bits from microcontroller and holds steady output states until next update cycle. Use Value: Prevents spurious actuation during firmware updates or interrupt latency windows. |
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 |
|---|---|---|---|
| 74HCT574D,653 | TTL-compatible inputs (VIH = 2.0 V min); identical pinout and timing except slightly higher tpd (18 ns typ at 4.5 V). | Better suited for mixed-logic systems with 5 V TTL sources; requires no level translation from legacy controllers. | Select when interfacing directly to 5 V TTL or older microcontrollers with weak CMOS drive strength. |
| SN74HC574N | DIP-20 package (SOT146-1); same electrical specs but through-hole mounting and wider temperature range (-55 °C to +125 °C). | Used in prototyping, military-grade boards, or high-reliability repair scenarios where surface-mount is unsuitable. | Choose for hand-soldered development, legacy board replacement, or extended thermal qualification needs. |
Compared with 74HC574D,652, the 74HCT574D,653 offers easier integration with TTL logic but trades minor speed; SN74HC574N provides mechanical and thermal ruggedness at the cost of PCB area and modern assembly compatibility.
Availability
74HC574D,652 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, industrial bus buffering, test equipment digital pattern generation, and automated test fixture control requiring stable component supply across automotive, industrial, and instrumentation markets.
Supply support for 74HC574D,652 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer applications.
The 74HC574D,652 belongs to Nexperia's 74HC logic family - engineered for low-power, high-noise-immunity digital interfacing in space-constrained and thermally demanding environments.
FAQ
What is the maximum clock frequency supported by the 74HC574D,652?
The 74HC574D,652 achieves a typical maximum clock frequency of 35 MHz at VCC = 6.0 V and CL = 50 pF. At 4.5 V, fmax drops to 24 MHz, and at 2.0 V it is 6 MHz. These values assume proper layout, decoupling, and load conditions - actual system-level frequency may be limited by board-level signal integrity and external timing margins.
Can OE be toggled while CP is active without affecting stored data?
Yes. The OE input is asynchronous and independent of the clock domain: asserting or deasserting OE has no effect on the internal flip-flop states. Data remains latched and unchanged regardless of OE transitions, enabling safe bus arbitration and hot-swappable peripheral control.
Does the 74HC574D,652 support 3.3 V operation?
Yes. The 74HC574D,652 is fully specified from 2.0 V to 6.0 V, including 3.3 V nominal operation. At VCC = 3.3 V, VIH = 2.31 V (70% of VCC), VIL = 0.99 V (30% of VCC), tpd ≈ 22 ns (typ), and fmax ≈ 15 MHz - all within guaranteed limits per the datasheet's recommended operating conditions.
Is there a pin-compatible automotive-grade version?
No. The 74HC574D,652 is rated for -40 °C to +125 °C but is not AEC-Q100 qualified. Nexperia offers the 74HC574-Q100 (SOT163-1) as the automotive-qualified variant - identical functionality and pinout, with full AEC-Q100 Grade 2 (−40 °C to +105 °C) or Grade 1 (−40 °C to +125 °C) qualification and enhanced process controls.
74HC574D,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 133 MHz
- Max Propagation Delay @ V, Max CL:
- 26ns @ 6V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74HC574D,652 FAQ
1.How can I place an order for 74HC574D,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC574D,652 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 74HC574D,652 reliable?
The price and inventory of 74HC574D,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC574D,652 is usually 5 days.
3.What payment methods are accepted for 74HC574D,652?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC574D,652 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC574D,652?
74HC574D,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC574D,652 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 74HC574D,652?
For technical support, including 74HC574D,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC574D,652 requirements.
6.How does Aetrix verify that 74HC574D,652 is sourced from the original manufacturer or authorized distributors?
All 74HC574D,652 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 74HC574D,652 meets industry standards.
7.What is the process for return or replacement of 74HC574D,652?
All 74HC574D,652 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC574D,652, 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 74HC574D,652 part is unused and in its original packaging.
Return procedure for 74HC574D,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC574D,652 Tags
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