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Nexperia USA Inc. 74HC174D,653
- Part No.:
- 74HC174D,653
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HC174D,653.pdf
- Description:
- IC FF D-TYPE SNGL 6BIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,449
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Product details
Overview
74HC174D,653 from Nexperia is a hex positive-edge-triggered D-type flip-flop with asynchronous master reset, implemented in high-speed CMOS technology. It provides six independent storage elements, each with dedicated D-input and Q-output, sharing a common clock (CP) and active-low master reset (MR). Operates from 2.0 V to 6.0 V supply, supports -40 °C to +125 °C ambient range, and delivers 50 ns typical propagation delay at 4.5 V - used in digital control registers, state machine sequencing, and synchronous data latching in industrial logic systems.
For engineers reviewing the 74HC174D,653 datasheet, 74HC174D,653 pinout, 74HC174D,653 application, or 74HC174D,653 equivalent, this device serves as a standard 16-pin SO16 edge-triggered register for deterministic data capture, reset coordination, and level-sensitive input interfacing in non-automotive embedded control and instrumentation designs.
Technical Context
The 74HC174D,653 implements six identical D-type flip-flops with synchronous data loading on the LOW-to-HIGH clock transition and asynchronous reset via MR. Each flip-flop samples its D-input only when setup and hold time requirements are met relative to CP's rising edge, ensuring deterministic metastability-free operation under specified timing constraints.
Its CMOS architecture enables rail-to-rail output swing, TTL-compatible input thresholds for the 74HCT variant (not applicable here), and robust noise immunity due to hysteresis-free but high-noise-margin input structure. The device lacks internal feedback or scan capability - it functions strictly as a parallel-load register without transparent mode or output enable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HC high-speed CMOS - ensures low static current and compatibility with 3.3 V/5 V mixed-signal systems |
| Supply Voltage Range | 2.0 V to 6.0 V - supports direct interface with legacy 5 V and modern 3.3 V logic domains |
| Propagation Delay (tpd) | 20 ns typ @ 4.5 V, CL = 50 pF - defines maximum clock-to-output timing budget in synchronous pipelines |
| Set-up Time (tsu) | 12 ns min @ 4.5 V - minimum D-input stability window before CP rising edge for reliable sampling |
| Hold Time (th) | 3 ns min @ 4.5 V - minimum D-input stability window after CP rising edge to prevent metastability |
| Operating Temperature | -40 °C to +125 °C - qualified for extended industrial environments including motor drives and power supplies |
| Power Dissipation Capacitance (CPD) | 17 pF - used to calculate dynamic power: PD = CPD × VCC² × fi + Σ(CL × VCC² × fo) |
Pinout & Package
74HC174D,653 is housed in a plastic small outline package (SO16), SOT109-1, with 16 leads and 3.9 mm body width. Pin 1 is marked by a notch or dot; the package is lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (MR) | Asynchronous master reset input | Active-LOW signal that forces all six Q outputs LOW regardless of clock state - critical for system initialization and fault recovery |
| 2 (Q0) | Flip-flop 0 output | Complementary storage node for D0; driven HIGH/LOW based on sampled D0 value at prior CP edge |
| 3 (D0) | Flip-flop 0 data input | Primary data source for Q0; must meet tsu/th relative to CP for valid capture |
| 4 (D1) | Flip-flop 1 data input | Independent data path for Q1 - no internal coupling between Dn inputs |
| 5 (Q1) | Flip-flop 1 output | Output corresponding to D1 sample - electrically isolated from other Q outputs except shared VCC/GND |
| 6 (D2) | Flip-flop 2 data input | Third independent data channel - supports parallel 6-bit register configuration |
| 7 (Q2) | Flip-flop 2 output | Third registered output - maintains state until next valid CP edge or MR assertion |
| 8 (GND) | Ground reference | 0 V return path for all internal circuitry and I/O - requires low-impedance PCB connection |
| 9 (CP) | Common clock input | Single-edge-sensitive input triggering simultaneous sampling of all six D inputs on LOW-to-HIGH transition |
| 10 (Q3) | Flip-flop 3 output | Fourth registered output - synchronized to same CP edge as Q0–Q2 and Q4–Q5 |
| 11 (D3) | Flip-flop 3 data input | Fourth independent data input - routed separately to avoid crosstalk in layout |
| 12 (Q4) | Flip-flop 4 output | Fifth registered output - shares timing behavior and drive strength with Q0–Q3 and Q5 |
| 13 (D4) | Flip-flop 4 data input | Fifth data input - supports full 6-bit parallel load without external multiplexing |
| 14 (D5) | Flip-flop 5 data input | Sixth and final data input - completes hex register functionality |
| 15 (Q5) | Flip-flop 5 output | Sixth and final registered output - matches electrical specs (VOH/VOL, drive) of Q0–Q4 |
| 16 (VCC) | Positive supply voltage | Primary power rail - must be decoupled locally with 100 nF ceramic capacitor near pin 16 |
Key Features
| Feature | Design Value |
|---|---|
| Hex D-type flip-flop with common clock and reset | Enables compact 6-bit register implementation without discrete glue logic or multiple ICs |
| Positive-edge clock trigger (LOW-to-HIGH) | Ensures precise, jitter-insensitive sampling aligned to system clock edges in synchronous designs |
| Asynchronous master reset (active LOW) | Allows immediate, clock-independent clearing of all outputs - essential for fail-safe startup and error recovery |
| Wide 2.0 V to 6.0 V supply range | Permits direct integration into both 3.3 V microcontroller peripherals and legacy 5 V bus systems |
| CMOS-level input thresholds | Guarantees >70% VCC VIH and <30% VCC VIL - eliminates need for level shifters when driving from HC/HCT outputs |
| Specified from -40 °C to +125 °C | Validates operation in harsh thermal environments such as industrial motor controllers and power converters |
Applications
| Industrial PLC Input Register | Digital Panel Meter Data Capture |
|---|---|
Use Scenario: Capturing 6-bit status signals from isolated sensor inputs in a programmable logic controller rack. IC Role / Device Role / Timing Role: Hex D-flip-flop acting as synchronous input latch - samples all six channels simultaneously on CPU clock edge to eliminate skew between bits. Use Value: Ensures atomic read of multi-bit sensor state without partial updates; MR pin allows hardware-initiated clear during module reset. |
Use Scenario: Holding digitized ADC output bits before display multiplexing in a 6-digit LED panel meter. IC Role / Device Role / Timing Role: Parallel data register buffering ADC parallel output - holds stable value while display driver cycles through digits. Use Value: Eliminates visual flicker by decoupling conversion timing from display refresh; CP edge aligns with ADC EOC signal. |
| Motor Control State Sequencer | Test Equipment Pattern Generator |
Use Scenario: Storing commutation sequence states for a 3-phase BLDC motor controller using Hall-effect feedback. IC Role / Device Role / Timing Role: Six-bit state register holding rotor position code - updated synchronously with hall sensor sampling clock. Use Value: Provides glitch-free state transitions; MR enables emergency stop by forcing all outputs LOW to disable gate drivers. |
Use Scenario: Generating fixed 6-bit test patterns for boundary-scan validation of PCB interconnects. IC Role / Device Role / Timing Role: Pattern register loaded via D0–D5 and clocked out on CP - forms deterministic stimulus vector for JTAG chain testing. Use Value: Delivers repeatable, edge-aligned stimulus without microcontroller overhead; MR resets pattern to known start state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT174D,653 | TTL-compatible inputs (VIH = 2.0 V min), otherwise identical pinout, timing, and function | Better suited for mixed 5 V TTL/CMOS systems where driving sources lack full CMOS swing | Select when interfacing legacy 74LS or microcontrollers with weak high-drive capability |
| SN74HC174N | DIP-16 package (SOT38-4), wider 0 °C to +70 °C temp range, identical electrical specs | Used in prototyping, educational kits, and through-hole production where SO16 reflow is unavailable | Choose for breadboard evaluation or legacy through-hole assembly lines |
Compared with 74HC174D,653, the 74HCT174D,653 eases interface design in 5 V TTL-dominated systems, while SN74HC174N trades surface-mount efficiency for mechanical flexibility and simplified hand-soldering - neither offers enhanced speed, lower power, or extended temperature range.
Availability
74HC174D,653 is available at Aetrix Electronics and suitable for industrial control panels, digital instrumentation, motor drive sequencers, and test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HC174D,653 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 specializing in high-performance, energy-efficient logic, analog, and discrete components for industrial, automotive, and consumer markets.
The 74HC174D,653 belongs to Nexperia's 74HC logic family - designed for robust, low-power digital interfacing and register functions in non-automotive industrial and instrumentation applications.
FAQ
Is the 74HC174D,653 pin-compatible with the 74HCT174D,653?
Yes - both devices share identical SO16 (SOT109-1) pinout, terminal functions, and package dimensions. The only functional difference is input threshold voltage: 74HC174D,653 requires CMOS-level inputs (VIH ≥ 70% VCC), while 74HCT174D,653 accepts TTL-level inputs (VIH ≥ 2.0 V). No PCB redesign is needed for substitution if input drive capability is verified.
What is the maximum clock frequency supported by the 74HC174D,653 at 5.0 V?
At VCC = 5.0 V and CL = 15 pF, the 74HC174D,653 supports up to 99 MHz maximum clock frequency (fmax), as specified in Table 7 of the datasheet. This assumes clean signal integrity, proper decoupling, and adherence to setup/hold timing margins - actual system-level frequency may be limited by board-level parasitics and fanout load.
Can the MR (master reset) pin be left floating in normal operation?
No - MR is an active-LOW asynchronous input with no internal pull-up. Leaving it floating risks unintended reset events due to noise coupling or leakage currents. It must be actively driven HIGH (e.g., via 10 kΩ pull-up to VCC) or controlled by a system reset generator to ensure predictable operation and avoid spurious output clearing.
Does the 74HC174D,653 support hot insertion or live insertion into a powered backplane?
No - the 74HC174D,653 is not designed for hot insertion. Its absolute maximum ratings do not include live insertion stress conditions, and the absence of Ioff (power-off protection) means unpowered devices may experience latch-up or excessive current flow if inputs are driven while VCC is absent. Power sequencing per manufacturer guidelines is required.
74HC174D,653 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 6
- Clock Frequency:
- 107 MHz
- Max Propagation Delay @ V, Max CL:
- 28ns @ 6V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 5.2mA, 5.2mA
- 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:
- 16-SO
74HC174D,653 FAQ
1.How can I place an order for 74HC174D,653 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC174D,653 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 74HC174D,653 reliable?
The price and inventory of 74HC174D,653 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC174D,653 is usually 5 days.
3.What payment methods are accepted for 74HC174D,653?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC174D,653 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC174D,653?
74HC174D,653 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC174D,653 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 74HC174D,653?
For technical support, including 74HC174D,653 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC174D,653 requirements.
6.How does Aetrix verify that 74HC174D,653 is sourced from the original manufacturer or authorized distributors?
All 74HC174D,653 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 74HC174D,653 meets industry standards.
7.What is the process for return or replacement of 74HC174D,653?
All 74HC174D,653 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC174D,653, 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 74HC174D,653 part is unused and in its original packaging.
Return procedure for 74HC174D,653:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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