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Nexperia USA Inc. 74HCT174D,652
- Part No.:
- 74HCT174D,652
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT174D,652.pdf
- Description:
- IC FF D-TYPE SNGL 6BIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,905
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Product details
Overview
74HCT174D,652 from Nexperia is a hex positive-edge-triggered D-type flip-flop with asynchronous master reset, operating across 4.5 V to 5.5 V supply, delivering 6-bit synchronous data latching in digital control logic. It features TTL-compatible inputs, 16-pin SO16 package, and supports industrial temperature range (−40 °C to +125 °C), used in address register staging and clock-synchronized I/O buffering.
For engineers reviewing the 74HCT174D,652 datasheet, 74HCT174D,652 pinout, 74HCT174D,652 application, or 74HCT174D,652 equivalent, key selection criteria include input voltage compatibility (TTL-level), propagation delay at 5 V (21–53 ns), master reset timing behavior, and SO16 thermal derating profile for sustained operation in embedded control modules.
Technical Context
The device implements six independent edge-triggered D flip-flops sharing a common clock (CP) and asynchronous master reset (MR) input. Each flip-flop samples its Dn input on the LOW-to-HIGH transition of CP and drives Qn output synchronously, with MR overriding clock action to force all outputs LOW regardless of CP state.
Input clamping diodes enable safe interfacing to voltages exceeding VCC when current-limiting resistors are used. Static and dynamic characteristics are specified over −40 °C to +125 °C, with VIH/VIL thresholds fixed at 2.0 V/0.8 V (VCC = 4.5–5.5 V), ensuring robust noise immunity in mixed-logic systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures direct compatibility with 5 V TTL and mixed-voltage microcontroller I/O domains |
| Propagation Delay (CP→Q) | 21–53 ns at VCC = 4.5 V - defines maximum clock-to-output timing budget for synchronous logic design |
| Set-up Time (tsu) | 16–24 ns at VCC = 4.5 V - constrains minimum data hold before clock edge for reliable sampling |
| Hold Time (th) | 5 ns at VCC = 4.5 V - determines minimum data stability after clock edge to prevent metastability |
| Output Drive Strength | ±4.0 mA (VOH/VOL) - sufficient to drive standard TTL loads or multiple CMOS inputs without buffering |
| Operating Temperature | −40 °C to +125 °C - validated for under-hood automotive control modules and industrial PLC backplanes |
| Power Dissipation Capacitance | 17 pF - enables accurate dynamic power estimation (PD = CPD × VCC² × fi) in high-frequency applications |
Pinout & Package
74HCT174D,652 uses the SOT109-1 (SO16) plastic small outline package: 16-pin, 3.9 mm body width, gull-wing leads, JEDEC MS-012 compliant, with 1.27 mm pitch and exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (MR) | Asynchronous master reset | Active-LOW signal forcing all Qn outputs LOW independently of clock state |
| 2 (Q0), 5 (Q1), 7 (Q2), 10 (Q3), 12 (Q4), 15 (Q5) | Flip-flop outputs | Complementary non-inverted latched data outputs, each sourcing/sinking ±4 mA |
| 3 (D0), 4 (D1), 6 (D2), 11 (D3), 13 (D4), 14 (D5) | Data inputs | TTL-level compatible inputs accepting 0.8 V/2.0 V thresholds; clamp diodes permit overvoltage-safe interfacing |
| 8 (GND) | Ground reference | Primary return path for all internal logic and output currents; must be low-impedance |
| 9 (CP) | Clock input | Edge-sensitive input triggering simultaneous capture of all Dn values on LOW-to-HIGH transition |
| 16 (VCC) | Positive supply | Single 4.5–5.5 V rail powering all six flip-flops and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| TTL-level input compatibility | VIH = 2.0 V, VIL = 0.8 V at VCC = 4.5–5.5 V - eliminates need for level-shifting when interfacing with legacy 5 V microcontrollers |
| Asynchronous master reset | MR asserts within 20–53 ns (MR→Q) - enables deterministic system initialization without waiting for clock edges |
| Industrial temperature range | −40 °C to +125 °C operation - qualified for use in motor control inverters and factory automation I/O modules |
| ESD robustness | HBM > 2000 V, CDM > 1000 V - reduces susceptibility to handling damage during PCB assembly and field service |
| Low static power consumption | ICC ≤ 160 μA at VCC = 5.5 V, −40 °C to +125 °C - supports always-on status registers in battery-backed subsystems |
Applications
| Programmable Logic Controller (PLC) Input Latching | Digital Panel Meter Data Capture |
|---|---|
Use Scenario: Capturing 6-bit sensor readings from analog-to-digital converters before multiplexed display update. IC Role / Device Role / Timing Role: Hex D flip-flop acting as parallel data latch synchronized to system clock edge, holding stable values during digit scanning. Use Value: Eliminates metastability risk during ADC readout by enforcing strict set-up/hold timing, enabling reliable 100 kSPS sampling in compact meter designs. | Use Scenario: Staging switch status inputs in industrial HMI panels prior to microcontroller polling. IC Role / Device Role / Timing Role: Synchronous input register providing glitch-free debounced state capture aligned to MCU interrupt timing. Use Value: Reduces firmware overhead by eliminating software debounce loops; MR pin allows global reset on power-up or fault recovery. |
| Microcontroller Address Register Extension | Serial-to-Parallel Shift Register Stage |
Use Scenario: Expanding external memory addressing capability in 8-bit MCU systems using partial address latching. IC Role / Device Role / Timing Role: Edge-triggered storage element capturing upper address bits during ALE pulse in 8051-style bus cycles. Use Value: Enables 16-bit address space extension without requiring dedicated address latch ICs, reducing BOM count and board area. | Use Scenario: Converting serial configuration data from UART or SPI into parallel control signals for LED driver arrays. IC Role / Device Role / Timing Role: Parallel-load register receiving serialized bits via shift register, then outputting full byte on single clock edge. Use Value: Provides deterministic timing for lighting control updates, avoiding ripple-through delays inherent in cascaded shift registers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex D-type flip-flop with reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC174D,653 | CMOS-level inputs (VIH = 3.15 V @ VCC = 4.5 V); wider 2.0–6.0 V supply range | Requires level translation when interfacing with TTL outputs; better suited for mixed-voltage 3.3 V/5 V systems | Select when system uses CMOS logic families or requires extended supply flexibility beyond 5 V |
| SN74HCT174N | Dual-in-line package (DIP-16); identical electrical specs but higher thermal resistance (RθJA ≈ 70 °C/W vs. 58 °C/W for SO16) | Preferred for prototyping and through-hole PCBs; unsuitable for high-density surface-mount production | Select for breadboard evaluation or legacy DIP-based designs where reflow compatibility is not required |
Compared with 74HC174D,653, the 74HCT174D,652 offers guaranteed TTL input compatibility without external biasing, while SN74HCT174N trades thermal performance for mechanical prototyping convenience-making the SO16 variant optimal for volume surface-mount control logic.
Availability
74HCT174D,652 is available at Aetrix Electronics and suitable for programmable logic controllers, digital panel meters, microcontroller address expansion, and serial-to-parallel interface circuits requiring stable component supply across industrial temperature ranges.
Supply support for 74HCT174D,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, discrete, and MOSFET solutions with emphasis on reliability and manufacturability.
The 74HCT174 belongs to Nexperia's industry-standard 74-series logic family, designed specifically for robust, pin-compatible replacements in legacy 5 V digital control systems requiring TTL-compatible input thresholds and industrial-grade thermal resilience.
FAQ
Is 74HCT174D,652 pin-compatible with 74HC174D?
Yes, both share identical pinout (SOT109-1 SO16), function table, and package dimensions. The only functional difference is input threshold levels: 74HCT174D accepts TTL inputs (VIH = 2.0 V), while 74HC174D requires CMOS-level inputs (VIH = 3.15 V at 4.5 V). No PCB redesign is needed for substitution, but verify source logic family compatibility.
What is the maximum clock frequency supported by 74HCT174D,652?
At VCC = 4.5 V and CL = 50 pF, the maximum operating frequency is 30 MHz (typical) with 24 MHz guaranteed over −40 °C to +125 °C. At VCC = 5.0 V and CL = 15 pF, fmax reaches 69 MHz (typical), but this condition requires careful layout to minimize capacitive loading and ensure signal integrity.
Can the master reset (MR) pin be left floating in circuit design?
No. MR is an active-LOW input with no internal pull-up; floating MR risks unintended resets due to noise coupling. Design requires explicit termination-typically a 10 kΩ pull-up to VCC-unless actively driven by a system controller. This ensures defined logic state during power-up and idle periods.
Does 74HCT174D,652 support hot insertion or live insertion into powered systems?
No. The device lacks hot-swap protection circuitry. Applying VCC before establishing GND or driving inputs before supply stabilization may exceed absolute maximum ratings (e.g., VI > VCC + 0.5 V), risking latch-up or ESD damage. Power sequencing per manufacturer guidelines-GND first, then VCC, then signals-is mandatory for reliable operation.
74HCT174D,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 6
- Clock Frequency:
- 69 MHz
- Max Propagation Delay @ V, Max CL:
- 35ns @ 4.5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 4mA, 5.2mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- 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
74HCT174D,652 FAQ
1.How can I place an order for 74HCT174D,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT174D,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 74HCT174D,652 reliable?
The price and inventory of 74HCT174D,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT174D,652 is usually 5 days.
3.What payment methods are accepted for 74HCT174D,652?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT174D,652 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT174D,652?
74HCT174D,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT174D,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 74HCT174D,652?
For technical support, including 74HCT174D,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT174D,652 requirements.
6.How does Aetrix verify that 74HCT174D,652 is sourced from the original manufacturer or authorized distributors?
All 74HCT174D,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 74HCT174D,652 meets industry standards.
7.What is the process for return or replacement of 74HCT174D,652?
All 74HCT174D,652 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT174D,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 74HCT174D,652 part is unused and in its original packaging.
Return procedure for 74HCT174D,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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