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Nexperia USA Inc. 74HC74BZZ
- Part No.:
- 74HC74BZZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 14-XFQFN Exposed Pad
- Datasheet:
-
74HC74BZZ.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14DHXQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,955
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Product details
Overview
74HC74BZZ from Nexperia is a dual positive-edge-triggered D-type flip-flop with independent asynchronous set (nSD) and reset (nRD) inputs, 2.0–6.0 V supply range, 14-terminal DHXQFN package (SOT8014-1), and operation up to +125 °C - used for synchronous data latching and state storage in digital control logic, clock domain synchronization, and edge-sensitive register stages.
For engineers reviewing the 74HC74BZZ datasheet, 74HC74BZZ pinout, 74HC74BZZ application, or 74HC74BZZ equivalent, this device supports robust edge-triggered storage with Schmitt-trigger clock inputs, TTL-compatible variants (74HCT74BZ), and precise setup/hold timing (e.g., tsu = 13 ns @ VCC = 6.0 V) critical for noise-immune sequential logic design.
Technical Context
The 74HC74BZZ implements two independent D-flip-flops sharing no internal coupling; each has dedicated nD, nCP, nSD, nRD, nQ, and nQ̅ terminals. Its Schmitt-trigger clock input enables reliable operation with slow-rising clock edges, while clamp diodes on all inputs allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.
It operates across industrial and extended temperature ranges (−40 °C to +125 °C), complies with JEDEC JESD7A and JESD8C standards, and delivers symmetrical output drive (±25 mA), balanced propagation delays (tpd = 14 ns @ VCC = 6.0 V, CL = 50 pF), and low static ICC (≤80 μA @ VCC = 6.0 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.0 V to 6.0 V - supports mixed-voltage system interfacing and battery-powered logic. |
| Propagation delay (nCP → nQ) | 14 ns max @ VCC = 6.0 V, CL = 50 pF - enables reliable 24 MHz operation in synchronous systems. |
| Setup time (nD to nCP) | 13 ns min @ VCC = 6.0 V - defines minimum data stability window before clock edge for deterministic capture. |
| Output drive strength | ±25 mA - sufficient to directly drive multiple 74HC inputs or small LED loads without buffering. |
| Operating temperature | −40 °C to +125 °C - qualified for under-hood automotive, industrial PLC, and high-reliability embedded control. |
| Power dissipation capacitance | 24 pF - used to calculate dynamic power: PD = CPD × VCC² × fi × N. |
| Input leakage current | ±1.0 μA max @ VCC = 6.0 V - ensures minimal loading on high-impedance signal sources. |
Pinout & Package
DHXQFN14 (SOT8014-1) package: leadless, 2.0 mm × 2.0 mm × 0.48 mm body, 0.4 mm pitch, 14 terminals, thermal pad (non-soldered or floating/GND-connected per design).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1RD | Asynchronous reset (active LOW) | Forces 1Q = LOW regardless of clock or data - used for hard initialization or fault recovery. |
| 1D | Data input (flip-flop 1) | Samples and stores logic level on rising nCP edge - primary data path for register stage. |
| 1CP | Clock input (flip-flop 1) | LOW-to-HIGH transition triggers sampling; Schmitt-trigger input tolerates slow edges. |
| 1SD | Asynchronous set (active LOW) | Forces 1Q = HIGH regardless of clock or data - enables preset functionality. |
| 1Q | True output (flip-flop 1) | Complements 1Q̅; drives downstream logic or feedback paths with CMOS-level swing. |
| 1Q̅ | Complement output (flip-flop 1) | Provides inverted state - eliminates need for external inverters in toggle or JK emulation. |
| GND | Ground reference (pin 7) | Primary return path for all I/O and supply currents; must be low-inductance connection. |
| 2Q̅ | Complement output (flip-flop 2) | Independent of flip-flop 1; enables dual-channel storage without cross-talk. |
| 2Q | True output (flip-flop 2) | Matches 1Q timing and drive - allows parallel register banks or dual-phase clocking. |
| 2SD | Asynchronous set (flip-flop 2) | Independent control of second flip-flop - supports asymmetric initialization sequences. |
| 2CP | Clock input (flip-flop 2) | Electrically isolated from 1CP - enables dual-clock domain operation within one IC. |
| 2D | Data input (flip-flop 2) | Independent data path - used for mirrored logic, dual counters, or redundant state tracking. |
| 2RD | Asynchronous reset (flip-flop 2) | Independent reset - essential for safety-critical systems requiring per-channel fault clearing. |
| VCC | Supply voltage (pin 14) | Must be decoupled locally (e.g., 100 nF ceramic) to suppress switching noise on shared rail. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger clock input | Enables reliable triggering with rise/fall times up to 83 ns/V @ VCC = 6.0 V - reduces need for external signal conditioning. |
| Input clamp diodes | Allow direct interface to voltages > VCC using series current-limiting resistors - simplifies level-shifting in mixed-supply systems. |
| Wide supply range (2.0–6.0 V) | Permits use across 3.3 V microcontroller peripherals, 5 V legacy logic, and 2.5 V low-power subsystems without voltage translation. |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - ensures robustness against transient overvoltage and ESD-induced latch-up. |
| ESD protection | HBM > 2000 V, CDM > 1000 V - meets industrial handling requirements without additional protection circuitry. |
Applications
| Industrial Control Logic | Digital Signal Synchronization |
|---|---|
Use Scenario: Latching sensor status (e.g., limit switch, encoder index pulse) in programmable logic controllers. IC Role / Device Role / Timing Role: Edge-triggered storage element capturing asynchronous inputs into synchronous control state machines. Use Value: Asynchronous nSD/nRD inputs enable immediate fault reset or emergency stop assertion independent of main clock domain. |
Use Scenario: Aligning data streams between clock domains (e.g., SPI peripheral to FPGA fabric). IC Role / Device Role / Timing Role: Dual-stage synchronizer where first flip-flop samples metastable input and second provides clean output. Use Value: Matched tpd and symmetric output impedance minimize skew between Q/Q̅ outputs, improving setup margin in multi-bit transfers. |
| LED Display Row Drivers | Test Equipment Pattern Generation |
Use Scenario: Driving multiplexed 7-segment or dot-matrix displays via row/column scanning. IC Role / Device Role / Timing Role: Register holding active-row address bits synchronized to display refresh clock. Use Value: ±25 mA output drive directly sinks common-anode LED rows without external transistors, reducing BOM count. |
Use Scenario: Generating deterministic stimulus patterns (e.g., PRBS, counter sequences) for IC functional testing. IC Role / Device Role / Timing Role: Core building block in shift registers or Johnson counters for pattern sequencing. Use Value: Guaranteed 24 MHz max frequency and 13 ns setup time support precise timing control at test speeds up to 20 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC74PW | TSSOP14 package (4.4 mm width); higher Ptot (500 mW vs. 250 mW); same electrical specs. | Better thermal performance in high-density layouts; requires larger PCB footprint than 2×2 mm BZ. | Select when board space permits and thermal headroom is constrained by ambient conditions. |
| 74HCT74BZ | TTL-compatible inputs (VIH = 2.0 V min); identical DHXQFN14 package and pinout. | Interoperates directly with legacy 5 V TTL logic without level shifters; slightly higher ICC. | Select when interfacing with 74LS/74ALS families or mixed-logic systems requiring guaranteed TTL thresholds. |
Compared with 74HC74PW and 74HCT74BZ, the 74HC74BZZ offers the smallest footprint (2 mm × 2 mm) and lowest profile (0.48 mm), making it optimal for space-constrained portable and wearable electronics where CMOS-level compatibility suffices.
Availability
74HC74BZZ is available at Aetrix Electronics and suitable for industrial control logic, digital signal synchronization, LED display drivers, and test equipment pattern generation requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for 74HC74BZZ 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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial, automotive, and consumer applications.
The 74HC74BZZ belongs to Nexperia's 74HC logic family - designed for low-power, high-noise-immunity digital interfacing and sequential logic in space- and power-constrained embedded systems.
FAQ
What is the maximum operating frequency of the 74HC74BZZ?
The 74HC74BZZ achieves a maximum clock frequency of 24 MHz at VCC = 6.0 V with CL = 50 pF, verified by propagation delay (tpd ≤ 45 ns) and setup/hold timing margins. At lower VCC (e.g., 4.5 V), fmax drops to 20 MHz due to increased tpd and reduced drive strength.
Can the thermal pad on the DHXQFN14 package be soldered to ground?
Yes - the exposed thermal pad (pin 1 index area) may be soldered to GND or left floating per design needs. If connected, it must remain electrically isolated from other signals and tied only to the system ground plane to avoid shorting; no mechanical anchoring requirement exists.
How does the Schmitt-trigger clock input improve system robustness?
The Schmitt-trigger action on nCP provides hysteresis (≈0.4 V typical), allowing reliable edge detection even with slow-rising clock signals (up to 83 ns/V at VCC = 6.0 V). This eliminates false triggering from noise or ringing on long PCB traces without external RC filtering.
Is the 74HC74BZZ pin-compatible with the 74HCT74BZ?
Yes - both share identical DHXQFN14 (SOT8014-1) packaging, 14-terminal layout, and pin functions. The only difference is input threshold levels: 74HC74BZZ uses CMOS-compatible VIH/VIL, while 74HCT74BZ uses TTL-compatible thresholds (VIH ≥ 2.0 V), enabling drop-in replacement where logic family matching is confirmed.
74HC74BZZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 14-XFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Set(Preset) and Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 24 MHz
- Max Propagation Delay @ V, Max CL:
- 45ns @ 6V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Iq):
- 80 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHXQFN (2x2)
74HC74BZZ FAQ
1.How can I place an order for 74HC74BZZ through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC74BZZ 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 74HC74BZZ reliable?
The price and inventory of 74HC74BZZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC74BZZ is usually 5 days.
3.What payment methods are accepted for 74HC74BZZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC74BZZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC74BZZ?
74HC74BZZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC74BZZ 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 74HC74BZZ?
For technical support, including 74HC74BZZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC74BZZ requirements.
6.How does Aetrix verify that 74HC74BZZ is sourced from the original manufacturer or authorized distributors?
All 74HC74BZZ 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 74HC74BZZ meets industry standards.
7.What is the process for return or replacement of 74HC74BZZ?
All 74HC74BZZ units undergo pre-shipment inspection (PSI). If there is an issue with 74HC74BZZ, 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 74HC74BZZ part is unused and in its original packaging.
Return procedure for 74HC74BZZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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