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Nexperia USA Inc. 74HCT374PW,118
- Part No.:
- 74HCT374PW,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT374PW,118.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:129
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Product details
Overview
74HCT374PW,118 from Nexperia is an octal positive-edge-triggered D-type flip-flop with non-inverting 3-state outputs, designed for bus interface applications requiring TTL-level input compatibility, 4.5 V to 5.5 V supply operation, and −40 °C to +125 °C industrial temperature range. It features independent register and output buffer control via separate CP and OE inputs, enabling synchronous data latching and asynchronous output tri-state management in digital systems such as microcontroller peripheral buses and address/data multiplexing circuits.
For engineers reviewing the 74HCT374PW,118 datasheet, 74HCT374PW,118 pinout, 74HCT374PW,118 application, or 74HCT374PW,118 equivalent, key selection criteria include TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V), propagation delay of 13 ns typical (CL = 15 pF), 3-state enable/disable times ≤45 ns, and TSSOP20 package suitability for high-density PCB layouts.
Technical Context
This device implements eight independent D-type flip-flops sharing a common clock (CP) and a single active-low output enable (OE). Each flip-flop captures the logic state of its D-input on the LOW-to-HIGH transition of CP, provided setup (12 ns min) and hold (5 ns min) timing requirements are met. The 3-state outputs remain unaffected by OE transitions - register state is preserved regardless of output buffer activation.
Input clamping diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors. Static characteristics confirm TTL-level compatibility: VIH ≥ 2.0 V and VIL ≤ 0.8 V across the full 4.5 V–5.5 V supply range, while VOH ≥ 3.98 V and VOL ≤ 0.26 V at IO = ±6 mA ensure robust noise margins in mixed-logic systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible CMOS, enabling direct interfacing with legacy 5 V TTL logic without level shifters. |
| Supply Voltage Range | 4.5 V to 5.5 V - Ensures stable operation across standard 5 V ±10 % power rails in industrial and embedded systems. |
| Propagation Delay (tpd) | 13 ns typical (VCC = 5.0 V, CL = 15 pF) - Supports reliable operation up to 48 MHz maximum clock frequency in synchronous bus designs. |
| 3-State Enable Time (ten) | 16 ns typical (VCC = 4.5 V) - Enables fast bus arbitration and reduces contention window during output activation. |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - Matches standard TTL voltage levels, eliminating need for external translation circuitry. |
| Operating Temperature | −40 °C to +125 °C - Qualified for under-hood automotive peripherals, industrial PLC I/O modules, and harsh-environment control systems. |
| Output Drive | ±6 mA (VOH/VOL specified at IO = ±6 mA) - Sufficient to drive multiple 74-series inputs or short PCB traces without buffering. |
Pinout & Package
TSSOP20 plastic thin shrink small outline package (SOT360-1), 20 leads, body width 4.4 mm, 0.65 mm pitch - optimized for space-constrained PCB layouts while maintaining thermal and mechanical reliability in reflow-soldered assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE | Active-low 3-state output enable; HIGH forces all Q outputs into high-impedance OFF-state without affecting internal register state. |
| 2 | VCC | Positive supply rail (4.5–5.5 V); decoupling capacitor placement near this pin is critical for noise suppression. |
| 3–4, 7–8, 13–14, 17–18 | D0–D7 | Eight asynchronous data inputs; each directly controls corresponding flip-flop's next-state value on CP rising edge. |
| 5–6, 9, 12, 15–16, 19 | Q0–Q7 | Eight non-inverting registered outputs; tri-stated simultaneously when OE = HIGH, preserving data integrity during bus sharing. |
| 10 | GND | Ground reference (0 V); must be low-impedance connection to minimize switching noise coupling into logic paths. |
| 11 | CP | Clock pulse input; rising-edge sensitive; requires clean, monotonic transition to avoid metastability or double-clocking. |
| 20 | VCC | Redundant supply pin - improves power distribution uniformity and reduces IR drop across die in high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-level input compatibility | VIH ≥ 2.0 V and VIL ≤ 0.8 V at VCC = 4.5–5.5 V - eliminates level-shifter components when interfacing with legacy 5 V TTL microcontrollers or FPGAs. |
| Independent register and 3-state control | OE input does not affect flip-flop state - enables glitch-free bus release while retaining latched data for subsequent read cycles. |
| Clamped inputs with current-limiting support | Integrated input clamp diodes allow safe connection to voltages > VCC using external series resistors - simplifies mixed-voltage signal routing. |
| High noise immunity | Typical noise margin > 0.7 V (VCC = 5 V) due to CMOS threshold design - ensures reliable operation in electrically noisy industrial environments. |
| JEDEC-compliant packaging and testing | SOT360-1 (TSSOP20) meets JESD22-A114 (ESD HBM > 2000 V) and JESD78 Class II Level B latch-up immunity (>100 mA) - supports robust manufacturing and field reliability. |
Applications
| Microcontroller Peripheral Bus Interface | Industrial I/O Expansion Module |
|---|---|
|
Use Scenario: Latching parallel data between an MCU and external memory-mapped peripherals or GPIO expanders. IC Role / Device Role / Timing Role: Acts as an 8-bit synchronized data register, capturing address/data bus signals on CP rising edge while isolating downstream loads via OE-controlled 3-state outputs. Use Value: Enables deterministic timing alignment between MCU clock domain and slower peripheral response times, reducing setup/hold violations in multi-cycle bus protocols. |
Use Scenario: Buffering and isolating digital sensor outputs or actuator control lines in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Provides isolated, noise-immune signal conditioning for 8-channel discrete I/O, with OE allowing dynamic bus sharing among multiple modules. Use Value: Eliminates cross-talk between adjacent channels and supports hot-swap capability via controlled 3-state sequencing during module insertion/removal. |
| Address/Data Multiplexing in Legacy Systems | Test Equipment Digital Pattern Generator |
|
Use Scenario: Demultiplexing shared address/data bus lines in 8051 or Z80-based embedded systems. IC Role / Device Role / Timing Role: Captures and holds address bits during memory access cycles, freeing the bus for data transfer while maintaining valid address decoding. Use Value: Reduces component count versus discrete latch solutions and guarantees sub-15 ns propagation delay for timing-critical 8-bit CPU architectures. |
Use Scenario: Generating precise, synchronized digital stimulus waveforms for IC functional validation. IC Role / Device Role / Timing Role: Stores pattern data from controller FIFO and presents it in parallel on Q0–Q7 outputs, gated by CP for cycle-accurate waveform timing. Use Value: Delivers jitter-free, repeatable edge alignment (±5 ns hold time margin) essential for high-fidelity digital test vector generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT374PWR (Texas Instruments) | Identical logic function, pinout, and DC specs; slightly higher ICC (160 μA max vs. 80 μA typ) and longer tpd (17 ns typ at 5 V). | Valid for same bus interface roles but may require tighter power budgeting in low-quiescent systems. | Select if TI supply chain preference or dual-sourcing strategy applies; verify layout compatibility with wider SOIC-20 footprint. |
| 74HCT374D,653 (Nexperia SO20) | Same electrical specs and timing, but in SO20 package (SOT163-1) with 7.5 mm body width and 1.27 mm pitch. | Better thermal dissipation (Ptot = 500 mW) but occupies ~2.5× more board area than TSSOP20. | Choose for manual assembly, prototyping, or thermal-limited applications where TSSOP reflow is impractical. |
Compared with SN74HCT374PWR and 74HCT374D,653, the 74HCT374PW,118 offers superior board-area efficiency and lower typical supply current, making it optimal for high-density industrial controllers and portable test equipment where space and quiescent power are constrained.
Availability
74HCT374PW,118 is available at Aetrix Electronics and suitable for industrial I/O expansion modules, microcontroller peripheral interfaces, address/data demultiplexing circuits, and digital test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT374PW,118 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, reliable logic, analog, and MOSFET solutions with emphasis on efficiency, miniaturization, and automotive-grade quality.
The 74HCT374 belongs to Nexperia's industry-standard 74HCT logic family, engineered specifically for seamless integration between TTL and CMOS systems in industrial automation, communications infrastructure, and embedded control applications.
FAQ
What is the maximum clock frequency supported by the 74HCT374PW,118?
The 74HCT374PW,118 supports a maximum clock frequency of 48 MHz under recommended conditions (VCC = 5.0 V, CL = 15 pF), verified by dynamic characterization in Table 7 of the datasheet. This limit assumes proper PCB layout, adequate decoupling, and adherence to setup/hold timing margins - actual system-level frequency may be lower depending on trace length and load capacitance.
Can OE be toggled while CP is active without corrupting stored data?
Yes - the OE input operates independently of the flip-flop registers. Asserting or deasserting OE has no effect on the internal state of D0–D7 storage elements; only the output drivers enter or exit high-impedance mode. This allows safe bus arbitration and dynamic output control without risk of data loss or metastability.
Is the 74HCT374PW,118 suitable for automotive applications?
No - the 74HCT374PW,118 is not AEC-Q100 qualified and is explicitly designated for industrial use (−40 °C to +125 °C). While it meets the temperature range required for some under-hood locations, Nexperia does not warrant or test this variant for automotive safety-critical functions, EMI resilience, or lifetime reliability per automotive standards.
How does the input clamping diode functionality impact interface design?
The integrated input clamp diodes allow safe connection of Dn or CP inputs to voltages up to VCC + 0.5 V (or down to −0.5 V) when used with external current-limiting resistors. This enables direct interfacing with higher-voltage logic families or analog signal sources without external protection diodes - resistor value must limit peak current to ≤20 mA per diode per Absolute Maximum Ratings (Table 4).
74HCT374PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 44 MHz
- Max Propagation Delay @ V, Max CL:
- 32ns @ 4.5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 6mA, 6mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 4 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74HCT374PW,118 FAQ
1.How can I place an order for 74HCT374PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT374PW,118 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 74HCT374PW,118 reliable?
The price and inventory of 74HCT374PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT374PW,118 is usually 5 days.
3.What payment methods are accepted for 74HCT374PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT374PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT374PW,118?
74HCT374PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT374PW,118 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 74HCT374PW,118?
For technical support, including 74HCT374PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT374PW,118 requirements.
6.How does Aetrix verify that 74HCT374PW,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT374PW,118 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 74HCT374PW,118 meets industry standards.
7.What is the process for return or replacement of 74HCT374PW,118?
All 74HCT374PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT374PW,118, 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 74HCT374PW,118 part is unused and in its original packaging.
Return procedure for 74HCT374PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT374PW,118 Tags
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