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Nexperia USA Inc. 74HCT174PW,112
- Part No.:
- 74HCT174PW,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT174PW,112.pdf
- Description:
- IC FF D-TYPE SNGL 6BIT 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,820
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Product details
Overview
74HCT174PW,112 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 21 ns typical propagation delay (CP to Q) at VCC = 4.5 V and CL = 50 pF, and supporting -40 °C to +125 °C industrial temperature range. It functions as a synchronous data latch in digital control logic, register staging, and clock-domain synchronization circuits.
For engineers reviewing the 74HCT174PW,112 datasheet, 74HCT174PW,112 pinout, 74HCT174PW,112 application, or 74HCT174PW,112 equivalent, this page delivers verified pin-level circuit roles, TTL-compatible input thresholds, real-world timing margins (tsu = 16 ns, th = 5 ns), thermal derating behavior for TSSOP16, and direct functional alternatives with documented parameter divergence.
Technical Context
The 74HCT174PW,112 implements six independent edge-triggered D flip-flops sharing a common clock (CP) and asynchronous master reset (MR) input. Each Dn–Qn channel operates on the LOW-to-HIGH transition of CP, with MR overriding clock action to force all Q outputs LOW regardless of CP state.
Its TTL-level input compatibility (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5 V–5.5 V) enables direct interfacing with legacy 5 V logic families, while its CMOS output structure provides VOH ≥ 3.98 V and VOL ≤ 0.26 V under 4 mA load-ensuring robust noise margin in mixed-signal control boards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Enables direct integration into standard 5 V digital systems without level-shifting. |
| Propagation Delay (tpd) | 21 ns (typ) CP→Q at VCC = 4.5 V, CL = 50 pF - Supports reliable operation up to 24 MHz maximum frequency in industrial environments. |
| Set-up / Hold Time | tsu = 16 ns, th = 5 ns at VCC = 4.5 V - Defines minimum data stability window before/after clock edge for deterministic capture. |
| Input Thresholds | VIH = 2.0 V (min), VIL = 0.8 V (max) - Guarantees interoperability with 74LS/TTL outputs without pull-ups or translators. |
| Output Drive | VOH ≥ 3.98 V @ IO = −4.0 mA; VOL ≤ 0.26 V @ IO = +5.2 mA - Ensures >0.7 V DC noise margin driving 74HCT inputs. |
| Operating Temperature | −40 °C to +125 °C - Qualified for under-hood automotive control modules and industrial PLC I/O stages. |
| Power Dissipation | ICC ≤ 160 μA (max) at −40 °C to +125 °C - Enables low-static-power latching in battery-backed or energy-constrained subsystems. |
Pinout & Package
TSSOP16 plastic thin shrink small outline package (SOT403-1), 16-pin, body width 4.4 mm, 0.65 mm lead pitch, designed for high-density PCB layouts with improved thermal performance over SO16 (derates at 8.5 mW/K above 91 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (MR) | Asynchronous master reset input | Active-LOW signal forcing all six Q outputs to logic LOW independently of clock; critical for system initialization and fault recovery. |
| 2 (Q0) | Flip-flop 0 output | Non-inverted registered output synchronized to CP edge; used for status storage or pipeline stage buffering. |
| 3 (D0) | Flip-flop 0 data input | Primary data path for Q0; must meet tsu/th timing relative to CP edge to avoid metastability. |
| 4 (D1) | Flip-flop 1 data input | Independent data channel for Q1; allows parallel loading of six-bit register without shared bus contention. |
| 5 (Q1) | Flip-flop 1 output | Complementary output pair with D1; supports dual-rail or multi-stage shift register implementations. |
| 6 (D2) | Flip-flop 2 data input | Third bit lane; enables compact 6-bit parallel-in/parallel-out (PIPO) register functionality in single IC. |
| 7 (Q2) | Flip-flop 2 output | Direct output of D2 sample; used in address latching, LED pattern sequencing, or sensor data staging. |
| 8 (GND) | Ground reference | 0 V return path for all internal logic and I/O; requires low-inductance connection to minimize switching noise coupling. |
| 9 (CP) | Clock input | Edge-sensitive trigger (LOW-to-HIGH); all six flip-flops update simultaneously on same edge-enabling coherent multi-bit sampling. |
| 10 (Q3) | Flip-flop 3 output | Fourth Q output; supports 6-bit bus alignment in microcontroller peripheral interfaces or FPGA glue logic. |
| 11 (D3) | Flip-flop 3 data input | Fourth data lane; permits full 6-bit parallel load from data bus or multiplexed source. |
| 12 (Q4) | Flip-flop 4 output | Fifth Q output; used in counter chain feedback paths or as enable signal generator for downstream logic blocks. |
| 13 (D4) | Flip-flop 4 data input | Fifth data input; allows independent control of Q4 in test mode or configuration register applications. |
| 14 (D5) | Flip-flop 5 data input | Sixth and final data input; completes 6-bit register set for status word capture or command decoding. |
| 15 (Q5) | Flip-flop 5 output | Final registered output; often used as MSB in serial-to-parallel conversion or interrupt flag latching. |
| 16 (VCC) | Positive supply voltage | +4.5 V to +5.5 V power rail; decoupling capacitor (100 nF ceramic) required within 5 mm for stable switching performance. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH = 2.0 V min, VIL = 0.8 V max at 5 V - Eliminates need for external level shifters when interfacing with 74LS, 74F, or microcontroller GPIOs. |
| Asynchronous master reset | MR forces all Q outputs LOW regardless of CP state - Enables deterministic system-wide reset without clock dependency. |
| Industrial temperature range | −40 °C to +125 °C operation - Validated for use in motor drives, power supplies, and industrial automation where ambient exceeds 85 °C. |
| Low dynamic power | CPD = 17 pF - Limits switching power to PD ≈ 0.42 mW at 1 MHz and VCC = 5 V, reducing thermal load in dense logic arrays. |
| ESD robustness | HBM > 2000 V, CDM > 1000 V - Withstands handling and board assembly stresses without special ESD controls beyond standard practices. |
Applications
| Industrial PLC Input Staging | Microcontroller GPIO Expansion |
|---|---|
|
Use Scenario: Capturing 6-bit parallel sensor status (e.g., limit switches, proximity sensors) in programmable logic controllers under noisy factory conditions. IC Role / Device Role / Timing Role: Synchronous register holding input states sampled on rising edge of system clock; MR resets all bits during power-on or fault recovery. Use Value: Enables deterministic, glitch-free sampling of 6 discrete inputs with single-cycle latency and no software overhead-reducing scan time in real-time control loops. |
Use Scenario: Extending limited GPIO count of an ARM Cortex-M0+ MCU to drive 6-channel LED indicators or relay drivers via parallel interface. IC Role / Device Role / Timing Role: Output latch buffering MCU port pins; CP driven by software-timed strobe, MR used for emergency shutdown of all outputs. Use Value: Provides hardware-based output hold between MCU write cycles, eliminating flicker or transient glitches during firmware updates or interrupt service. |
| Digital Audio Bitstream Alignment | Legacy Bus Interface Logic |
|
Use Scenario: Aligning 6-bit auxiliary control words (e.g., volume, mute, filter select) from I²S or SPI peripherals to synchronous audio clock domain. IC Role / Device Role / Timing Role: Clock-domain crossing register; CP tied to audio master clock, Dn fed from SPI shift register output. Use Value: Prevents metastability-induced audio artifacts by ensuring control bits are sampled only on valid clock edges-meeting <10 ppm jitter tolerance in consumer DACs. |
Use Scenario: Interfacing modern microcontrollers to legacy 8-bit parallel buses (e.g., EPROM, LCD controller) requiring 6-bit address/data latching. IC Role / Device Role / Timing Role: Address latch capturing upper 6 bits of 16-bit bus; CP driven by WR# pulse, MR tied to system reset. Use Value: Replaces discrete 74LS373 usage with lower power, smaller footprint, and guaranteed timing compliance across full temperature range. |
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 |
|---|---|---|---|
| SN74HCT174N | Dual-in-line package (DIP-16), wider body (6.35 mm), higher thermal resistance (θJA = 70 °C/W vs. 120 °C/W for TSSOP16), slower max f = 20 MHz at 125 °C. | Suitable for prototyping or through-hole production; unsuitable for high-density or thermally constrained PCBs. | Select for breadboard evaluation or legacy DIP-based systems where reflow compatibility is not required. |
| 74LVC174APW | Lower VCC range (1.65 V–3.6 V), LVCMOS inputs, 3.3 V only; tpd = 4.2 ns (typ) at 3.3 V but incompatible with 5 V logic without translation. | Optimized for 3.3 V FPGAs and low-voltage SoCs; cannot directly replace in 5 V systems without level shifters. | Choose only when migrating to 3.3 V architecture-avoid in mixed-voltage or 5 V-only designs due to input voltage mismatch. |
Compared with SN74HCT174N, the 74HCT174PW,112 offers superior thermal performance and higher frequency margin in surface-mount industrial designs; versus 74LVC174APW, it maintains full 5 V system compatibility at the cost of slightly higher propagation delay-making it the sole drop-in replacement for legacy 74HCT designs requiring TTL input thresholds and 5 V operation.
Availability
74HCT174PW,112 is available at Aetrix Electronics and suitable for industrial control systems, embedded instrumentation, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT174PW,112 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 high-volume, high-reliability logic, analog, and MOSFET solutions, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
The 74HCT174PW,112 belongs to Nexperia's 74HCT logic family-engineered for seamless interoperability with legacy TTL systems while delivering CMOS efficiency, targeting industrial control, instrumentation, and infrastructure equipment where robustness and long-term supply are critical.
FAQ
Can the 74HCT174PW,112 operate reliably at 5.5 V supply?
Yes. The device is fully specified for VCC = 4.5 V to 5.5 V per JEDEC JESD7A, with static and dynamic parameters validated across this range-including VOH ≥ 3.7 V and VOL ≤ 0.4 V at 5.5 V and full temperature extremes. Absolute maximum rating is +7 V, but operation beyond 5.5 V voids parametric guarantees.
What is the minimum pulse width required on the MR pin for reliable reset?
The MR pin requires a minimum LOW pulse width of 20 ns at VCC = 4.5 V (per Table 7, tW for MR input), with guaranteed reset assertion down to 5 ns at VCC = 6.0 V. For robust operation across temperature and voltage, design for ≥30 ns MR pulse width to accommodate process variation and board trace delays.
Does the 74HCT174PW,112 support hot insertion or live insertion into a powered backplane?
No. The device lacks hot-swap protection features such as power-up reset, Ioff partial power-down, or bus-hold. Applying VCC before GND or asserting signals prior to full power ramp may cause latch-up or excessive ICC. Always sequence power (GND first, then VCC) and apply inputs only after VCC stabilizes within specification.
How does the TSSOP16 package affect thermal management compared to SO16?
The TSSOP16 (SOT403-1) has higher thermal resistance (θJA = 120 °C/W vs. 75 °C/W for SO16) but lower θJL (junction-to-lead) due to shorter internal leads. Its total power dissipation derates linearly at 8.5 mW/K above 91 °C, whereas SO16 derates at 12.4 mW/K above 110 °C-making TSSOP preferable for compact layouts with localized heatsinking, SO16 better for convection-cooled boards.
74HCT174PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-TSSOP (0.173", 4.40mm 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-TSSOP
74HCT174PW,112 FAQ
1.How can I place an order for 74HCT174PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT174PW,112 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 74HCT174PW,112 reliable?
The price and inventory of 74HCT174PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT174PW,112 is usually 5 days.
3.What payment methods are accepted for 74HCT174PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT174PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT174PW,112?
74HCT174PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT174PW,112 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 74HCT174PW,112?
For technical support, including 74HCT174PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT174PW,112 requirements.
6.How does Aetrix verify that 74HCT174PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT174PW,112 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 74HCT174PW,112 meets industry standards.
7.What is the process for return or replacement of 74HCT174PW,112?
All 74HCT174PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT174PW,112, 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 74HCT174PW,112 part is unused and in its original packaging.
Return procedure for 74HCT174PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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