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Nexperia USA Inc. 74HCT74PW,112
- Part No.:
- 74HCT74PW,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT74PW,112.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,341
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Product details
Overview
74HCT74PW,112 from Nexperia is a dual D-type flip-flop with separate data (D), clock (CP), set (SD), and reset (RD) inputs per section; operates at 4.5–5.5 V supply, 20 ns propagation delay at 5 V, and -40°C to +125°C temperature range; used in synchronous logic control and clock-domain synchronization in industrial PLC I/O modules.
For engineers reviewing the 74HCT74PW,112 datasheet, 74HCT74PW,112 pinout, 74HCT74PW,112 application, or 74HCT74PW,112 equivalent, key selection criteria include guaranteed 5 V TTL-compatible input thresholds, independent asynchronous set/reset per flip-flop, and TSSOP-14 package thermal performance for dense PCB layouts.
Technical Context
This device implements two edge-triggered D flip-flops in a single monolithic CMOS IC. Each section features positive-edge clock triggering, active-low asynchronous set and reset, and non-inverted Q and inverted QN outputs. Logic levels conform to HCT family specifications with TTL-compatible input thresholds.
It is designed for direct interfacing with legacy 5 V TTL systems while maintaining CMOS power efficiency. The dual-section architecture supports independent data latching on shared or separate clocks, enabling register file staging and pulse-width control in digital state machines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | HCT - TTL-compatible input thresholds with CMOS output drive and low static current |
| Supply Voltage | 4.5–5.5 V - Ensures robust operation across industrial 5 V rail tolerances |
| Propagation Delay | 20 ns max at VCC = 5 V - Supports reliable 25 MHz maximum clock frequency in synchronous designs |
| Operating Temperature | -40°C to +125°C - Qualified for under-hood automotive and factory-floor industrial environments |
| Output Drive | ±4 mA at VCC = 4.5 V - Sufficient to drive 10 LS-TTL loads or short PCB traces without buffering |
| Input Threshold | VIL ≤ 0.8 V, VIH ≥ 2.0 V - Guarantees noise margin >0.4 V with standard 5 V TTL outputs |
Pinout & Package
TSSOP-14 (Thin Shrink Small Outline Package), 0.65 mm pitch, body width 4.4 mm, JEDEC MO-153 compliant. Exposed pad not present; moisture sensitivity level MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7 | D1, CP1, SD1, RD1, Q1, QN1, GND | Section 1 data, clock, async set/reset, outputs, and ground reference |
| 8, 9, 10, 11, 12, 13, 14 | VCC, QN2, Q2, RD2, SD2, CP2, D2 | Power supply, Section 2 complementary outputs, async controls, clock, and data inputs |
Key Features
| Feature | Design Value |
|---|---|
| Independent asynchronous set/reset per flip-flop | Enables hard-wired system initialization and fault recovery without clock dependency |
| TTL-compatible input thresholds | Eliminates level-shifting when interfacing with legacy 74LS/74ALS logic families |
| Guaranteed latch-up immunity | Withstands ±100 mA I/O stress per JESD78, critical for noisy industrial backplanes |
| Low input capacitance (3.5 pF typical) | Minimizes clock net loading and timing skew in high-speed fanout scenarios |
Applications
| Industrial PLC Output Staging | Automotive Body Control Module |
|---|---|
Use Scenario: Latching digital output commands before driving high-side switches in modular I/O racks. IC Role / Device Role / Timing Role: Dual D flip-flop providing synchronized, glitch-free enable signals with independent reset for channel isolation. Use Value: Prevents transient output spikes during power-up or firmware restart via hardware-level async reset assertion. | Use Scenario: Debouncing and synchronizing door lock/unlock switch inputs before feeding MCU GPIOs. IC Role / Device Role / Timing Role: Edge-triggered storage element capturing mechanical switch transitions aligned to system clock domain. Use Value: Eliminates software debouncing overhead and ensures deterministic timing for safety-critical actuation sequences. |
| Test Equipment Pattern Generator | Medical Infusion Pump Controller |
Use Scenario: Generating precise, repeatable stimulus waveforms for digital circuit validation. IC Role / Device Role / Timing Role: Register stage holding pattern bits synchronized to master test clock with independent load control. Use Value: Enables sub-cycle waveform update timing and deterministic state transitions across multi-bit parallel outputs. | Use Scenario: Managing motor enable/disable sequencing and alarm flag latching in battery-powered infusion controllers. IC Role / Device Role / Timing Role: Dual latch storing pump run status and fault flags with fail-safe reset on power brownout detection. Use Value: Maintains safe shutdown state even during brief VCC dips, meeting IEC 62304 Class C requirements. |
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 |
|---|---|---|---|
| SN74HCT74DR | SOP-14 package; 22 ns max tPD; identical logic function and DC specs | Larger footprint and lower thermal dissipation than TSSOP-14 | Select when board assembly uses SOP carriers or requires higher rework tolerance |
| 74HC74PW,118 | HC logic family; 2 V–6 V supply; VIH/VIL thresholds differ (30%/70% VCC) | Not TTL-compatible; requires level-shifting for legacy 5 V TTL interfaces | Select only in new 3.3 V or mixed-voltage designs where HCT's TTL compatibility is unnecessary |
Compared with SN74HCT74DR and 74HC74PW,118, the 74HCT74PW,112 uniquely balances industrial-grade thermal performance in TSSOP-14 with guaranteed 5 V TTL interoperability-critical for retrofitting legacy control systems without redesigning interface layers.
Availability
74HCT74PW,112 is available at Aetrix Electronics and suitable for industrial PLC output staging, automotive body control modules, test equipment pattern generation, and medical infusion pump controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT74PW,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 essential efficiency, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74HCT series targets industrial and automotive applications requiring robust 5 V logic interoperability, with design emphasis on noise immunity, wide temperature operation, and latch-up resistance in electrically harsh environments.
FAQ
Is 74HCT74PW,112 pin-compatible with 74LS74?
Yes - it uses identical TSSOP-14 pinout and functional mapping to 74LS74, including D, CP, SD, RD, Q, and QN assignments per section. However, 74HCT74PW,112 draws significantly less quiescent current and offers improved noise margins due to CMOS input structure, while maintaining full 5 V TTL voltage-level compatibility.
What is the maximum clock frequency supported?
At VCC = 5 V and TA = 25°C, the maximum operating frequency is 25 MHz, derived from the 20 ns maximum propagation delay (tPD) and setup/hold time constraints. Derating applies above 85°C ambient; full specification up to 125°C confirms usable operation at ≥18 MHz in worst-case thermal conditions.
Does it support hot insertion?
No - the 74HCT74PW,112 lacks hot-swap protection circuitry such as power-up reset, Ioff, or bus-hold. Applying VCC before or after signal inputs may cause undefined output states or excessive current flow. System-level hot-swap must be implemented externally using power sequencing controllers or dedicated hot-swap ICs.
Can unused inputs be left floating?
No - all inputs (D, CP, SD, RD) must be actively driven or tied to VCC/GND via pull-up/pull-down resistors. Floating inputs risk metastability, increased dynamic power consumption, and potential oscillation due to CMOS input stage sensitivity. For unused sections, tie D to GND, SD and RD to VCC, and CP to GND to force defined low-output state.
74HCT74PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- 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:
- 59 MHz
- Max Propagation Delay @ V, Max CL:
- 44ns @ 4.5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 4mA, 4mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 40 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
74HCT74PW,112 FAQ
1.How can I place an order for 74HCT74PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT74PW,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 74HCT74PW,112 reliable?
The price and inventory of 74HCT74PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT74PW,112 is usually 5 days.
3.What payment methods are accepted for 74HCT74PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT74PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT74PW,112?
74HCT74PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT74PW,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 74HCT74PW,112?
For technical support, including 74HCT74PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT74PW,112 requirements.
6.How does Aetrix verify that 74HCT74PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT74PW,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 74HCT74PW,112 meets industry standards.
7.What is the process for return or replacement of 74HCT74PW,112?
All 74HCT74PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT74PW,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 74HCT74PW,112 part is unused and in its original packaging.
Return procedure for 74HCT74PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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