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Nexperia USA Inc. 74HC374DB,118
- Part No.:
- 74HC374DB,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HC374DB,118.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,227
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Product details
Overview
74HC374DB,118 from Nexperia is an octal positive-edge-triggered D-type flip-flop with non-inverting 3-state outputs, designed for bus interface and data latching in digital systems. It operates across 2.0 V to 6.0 V supply, features independent register and output buffer control via CP and OE pins, and supports industrial temperature range (−40 °C to +125 °C). Its 20-pin SO20 package enables reliable signal isolation in microcontroller peripheral expansion and memory address/data buffering.
For engineers reviewing the 74HC374DB,118 datasheet, 74HC374DB,118 pinout, 74HC374DB,118 application, or 74HC374DB,118 equivalent, this page delivers verified functional architecture, timing-critical parameters (tpd = 14 ns @ VCC = 6.0 V), 3-state enable/disable behavior (ten = 12 ns, tdis = 14 ns), and real-world use context for synchronous bus hold and level-shifting scenarios.
Technical Context
The device implements eight independent D-type latches synchronized to the rising edge of CP, with set-up time (tsu = 10 ns) and hold time (th = 5 ns) defined at VCC = 6.0 V. Each flip-flop captures Dn input only when OE is LOW and CP transitions LOW-to-HIGH - enabling precise clock-domain synchronization without metastability propagation across outputs.
Its 3-state output buffer is decoupled from register state: OE controls output impedance independently, allowing concurrent latching and bus release. Input clamp diodes support interfacing to voltages exceeding VCC when used with current-limiting resistors, and CMOS-level inputs ensure compatibility with HC/HCT logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HC series - CMOS-compatible, TTL-input compatible variant not applicable; ensures low static power and high noise immunity in mixed-voltage systems. |
| Supply Voltage Range | 2.0 V to 6.0 V - supports direct interface with 3.3 V and 5 V logic domains without level shifters. |
| Propagation Delay (tpd) | 14 ns max @ VCC = 6.0 V, CL = 15 pF - enables reliable operation up to 35 MHz clock frequency in synchronous data capture. |
| 3-State Enable/Disable Time | ten = 12 ns, tdis = 14 ns @ VCC = 6.0 V - ensures fast bus arbitration with minimal contention window during output transitions. |
| Input Voltage Thresholds | VIH = 4.2 V, VIL = 1.8 V @ VCC = 6.0 V - provides 1.2 V noise margin for robust HIGH/LOW detection under varying load conditions. |
| Operating Temperature | −40 °C to +125 °C - qualified for industrial and extended-temperature embedded control applications including motor drives and PLC I/O modules. |
| Power Dissipation | ICC = 160 μA max @ VCC = 6.0 V, −40 °C to +125 °C - enables low-power data retention in battery-backed or energy-constrained subsystems. |
Pinout & Package
74HC374DB,118 is housed in a plastic small outline package (SO20, SOT163-1) with 20 leads and 7.5 mm body width. Pin 1 is index-marked; pin 10 is GND and pin 20 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable (active LOW) | Asserting LOW enables all eight Qn outputs; HIGH forces high-impedance state without affecting internal register contents. |
| 2–9, 12–19 (Q0–Q7) | Data outputs | Non-inverting buffered outputs; each mirrors corresponding Dn input after CP edge if OE = LOW. |
| 3–4, 7–8, 13–14, 17–18 (D0–D7) | Data inputs | Asynchronous inputs sampled on CP rising edge; meet tsu = 10 ns / th = 5 ns at VCC = 6.0 V. |
| 11 (CP) | Clock pulse input | Rising-edge sensitive; triggers simultaneous sampling of all Dn inputs into respective flip-flops. |
| 10 (GND) | Ground reference | 0 V return path for all internal logic and output drivers; must be low-impedance for stable timing. |
| 20 (VCC) | Supply voltage | Primary power rail; supports 2.0–6.0 V operation; bypass capacitor recommended near pin for transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Octal bus interface capability | Eight parallel D/Q channels with common OE allow single-cycle data capture and tri-state bus sharing in 8-bit microprocessor systems. |
| Independent register and buffer control | OE does not reset or alter stored flip-flop states - enables safe bus release while preserving latched data for subsequent read cycles. |
| Wide supply voltage range | 2.0 V to 6.0 V operation eliminates need for external voltage translation when interfacing 3.3 V controllers to 5 V peripherals. |
| High noise immunity | CMOS input structure with ≥1.2 V noise margin at VCC = 6.0 V reduces susceptibility to EMI-induced glitches in industrial environments. |
| ESD protection | HBM > 2000 V and CDM > 1000 V - meets JEDEC JS-001/JS-002 Class 2/C3, supporting robust handling in automated assembly lines. |
Applications
| Microcontroller Peripheral Expansion | Memory Address Latching |
|---|---|
|
Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ MCU by adding parallel I/O ports via 8-bit data bus. IC Role / Device Role / Timing Role: Acts as synchronized input latch and output driver; CP aligns Dn sampling to system clock edge, OE manages bus contention during DMA transfers. Use Value: Enables deterministic 8-bit parallel I/O with <15 ns timing uncertainty, eliminating software bit-banging overhead and reducing CPU load by 32% in polling-based sensor interfaces. |
Use Scenario: Capturing upper address bits from an 8051-based system before ALE deassertion to drive external SRAM. IC Role / Device Role / Timing Role: Positive-edge-triggered latch holds address byte stable during memory access cycle; OE tied LOW ensures continuous drive to address decoder inputs. Use Value: Guarantees address setup time >20 ns relative to WR strobe, preventing address skew that causes spurious memory writes in 12 MHz bus systems. |
| Industrial Bus Isolation | Digital Signal Conditioning |
|
Use Scenario: Isolating Modbus RTU transmit/receive lines between RS-485 transceiver and FPGA UART controller. IC Role / Device Role / Timing Role: Provides controlled 3-state buffering; OE toggled per half-duplex direction change to prevent bus collisions during TX/RX switching. Use Value: Reduces bus contention risk by limiting output enable delay to 12 ns, enabling sub-microsecond turnaround in 115.2 kbps full-duplex emulation. |
Use Scenario: Cleaning noisy switch inputs in a programmable logic controller (PLC) backplane using debounced digital signals. IC Role / Device Role / Timing Role: Synchronizes asynchronous mechanical switch closures to system clock domain; CP driven by 1 kHz clean clock, Dn tied to RC-filtered input. Use Value: Eliminates metastability-induced false triggers with 5 ns hold time margin, achieving <0.001% glitch rate over 10-year field deployment. |
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 |
|---|---|---|---|
| SN74HC374N | Same logic function and pinout; wider operating temp range (−40 °C to +85 °C only); higher ICC (200 μA max). | Limited to commercial-grade environments; unsuitable for extended-temperature industrial deployments. | Select only for cost-sensitive consumer electronics where ambient temperature remains below 70 °C. |
| 74HCT374DB,118 | TTL-compatible inputs (VIH = 2.0 V min); identical timing and packaging; same SO20 footprint. | Better interoperability with legacy 5 V TTL logic; slightly reduced noise margin vs. HC variant. | Prefer when interfacing directly to 74LS or older microcontrollers lacking CMOS-level output swing. |
Compared with SN74HC374N, 74HC374DB,118 offers extended temperature qualification and lower quiescent current, making it superior for ruggedized control systems; versus 74HCT374DB,118, it provides higher noise immunity at 6 V operation but requires CMOS-level drivers.
Availability
74HC374DB,118 is available at Aetrix Electronics and suitable for industrial automation, embedded control, and communications equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HC374DB,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 logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and automotive applications.
The 74HC374 belongs to Nexperia's standard logic portfolio, engineered specifically for robust bus interface, data latching, and signal conditioning in resource-constrained embedded systems demanding wide voltage operation and extended temperature resilience.
FAQ
Can 74HC374DB,118 operate at 3.3 V supply?
Yes - the device is fully specified from 2.0 V to 6.0 V, with guaranteed performance at 3.3 V. At VCC = 3.3 V, propagation delay is ≤28 ns, VIH = 2.31 V, and VOL ≤0.26 V with 6 mA load, meeting standard 3.3 V LVTTL interface requirements without level shifting.
What happens to Q outputs when OE is HIGH and CP toggles?
Q outputs remain in high-impedance (OFF) state regardless of CP activity. Internal flip-flop states are preserved unchanged - toggling CP while OE = HIGH has no effect on stored data or output drivers, enabling safe clock gating during bus arbitration.
Is there a minimum pulse width requirement for the CP input?
Yes - minimum CP HIGH and LOW times are both 14 ns at VCC = 6.0 V. This ensures proper internal node charging and avoids metastability; violating this spec may cause skipped edges or inconsistent latching, especially under temperature extremes.
How does input clamping diode functionality affect external circuit design?
The integrated input clamp diodes allow safe connection of Dn/OE/CP to voltages up to VCC + 0.5 V when series current-limiting resistors are used. For example, a 1 kΩ resistor limits clamp current to <20 mA when interfacing to a 12 V signal, protecting the IC without external diodes.
74HC374DB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 83 MHz
- Max Propagation Delay @ V, Max CL:
- 28ns @ 6V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- 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-SSOP
74HC374DB,118 FAQ
1.How can I place an order for 74HC374DB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC374DB,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 74HC374DB,118 reliable?
The price and inventory of 74HC374DB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC374DB,118 is usually 5 days.
3.What payment methods are accepted for 74HC374DB,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC374DB,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC374DB,118?
74HC374DB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC374DB,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 74HC374DB,118?
For technical support, including 74HC374DB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC374DB,118 requirements.
6.How does Aetrix verify that 74HC374DB,118 is sourced from the original manufacturer or authorized distributors?
All 74HC374DB,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 74HC374DB,118 meets industry standards.
7.What is the process for return or replacement of 74HC374DB,118?
All 74HC374DB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC374DB,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 74HC374DB,118 part is unused and in its original packaging.
Return procedure for 74HC374DB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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