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Nexperia USA Inc. 74HCT374D,653
- Part No.:
- 74HCT374D,653
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74HCT374D,653.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:11,269
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Product details
Overview
74HCT374D,653 from Nexperia is an octal positive-edge-triggered D-type flip-flop with 3-state outputs in SO20 (SOT163-1) package, operating from 4.5 V to 5.5 V supply, featuring TTL-compatible inputs, 13 ns typical propagation delay at 5 V, and −40 °C to +125 °C temperature range - used for synchronous data latching and bus interface isolation in industrial control backplanes.
For engineers reviewing the 74HCT374D,653 datasheet, 74HCT374D,653 pinout, 74HCT374D,653 application, or 74HCT374D,653 equivalent, key selection considerations include edge-trigger timing margin, 3-state enable timing (16 ns enable/disable), output drive capability (±6 mA), input voltage compatibility with legacy TTL logic, and SO20 thermal derating above 109 °C.
Technical Context
This device implements eight independent D-type latches synchronized to the rising edge of CP, with a dedicated active-low OE input that places all Q outputs in high-impedance state without affecting internal register states. Each flip-flop samples Dn on the LOW-to-HIGH clock transition under validated setup (12 ns) and hold (5 ns) timing constraints.
The 3-state buffer stage operates independently from the storage elements, enabling concurrent data capture and bus release. Input clamp diodes allow safe interfacing to voltages exceeding VCC when current-limiting resistors are used, and static immunity meets JEDEC JESD7A and JESD8C standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V) |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures interoperability with 5 V TTL systems and stable operation across industrial voltage tolerances |
| Propagation Delay (tpd) | 13 ns typ @ VCC = 5 V, CL = 15 pF - determines maximum synchronous bus update rate (fmax = 48 MHz) |
| 3-State Enable/Disable Time | 16 ns enable (ten), 18 ns disable (tdis) @ VCC = 4.5 V - defines minimum bus turnaround gap between read/write cycles |
| Output Drive Strength | ±6 mA @ VOH/VOL - supports direct connection to standard 50 Ω transmission lines or multiple 74-series inputs without buffering |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive modules and industrial motor drives requiring extended thermal range |
| Input Capacitance (CI) | 3.5 pF - minimizes capacitive loading on driving gates and preserves signal integrity in high-speed parallel buses |
Pinout & Package
SO20 plastic small outline package (SOT163-1), 20-pin, 7.5 mm body width, 1.27 mm pitch, with exposed pad not present - suitable for reflow soldering and compatible with IPC-7351B SOIC-20 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (Output Enable) | Active-low control: HIGH = high-impedance outputs; does not affect internal flip-flop state |
| 2–9, 12, 15–16, 19 | Q0–Q7 (Outputs) | Non-inverting registered outputs; each enters Z-state when OE = HIGH |
| 3–4, 7–8, 13–14, 17–18 | D0–D7 (Data Inputs) | Asynchronous data inputs sampled only on rising CP edge meeting setup/hold requirements |
| 10 | GND | Ground reference for all I/O and internal circuitry; must be low-inductance connection |
| 11 | CP (Clock Pulse) | Rising-edge sensitive; triggers simultaneous capture of all eight D inputs into respective registers |
| 20 | VCC | Positive supply rail; decoupling capacitor (100 nF) required within 10 mm of this pin |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible input thresholds | VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V - enables direct interfacing with legacy 5 V TTL outputs without level shifters |
| Independent register and 3-state control | OE assertion does not reset or alter stored D-input states - allows pipelined bus arbitration and glitch-free state retention |
| High noise immunity | CMOS core with >40 % noise margin at VCC = 5 V - suppresses coupling-induced metastability in noisy industrial environments |
| JEDEC-compliant latch-up performance | >100 mA per JESD78 Class II Level B - prevents destructive latch-up during transient overvoltage events |
| ESD robustness | HBM >2000 V, CDM >1000 V - withstands handling and board-level ESD without functional degradation |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module (BCM) Data Latch |
|---|---|
|
Use Scenario: Isolating microcontroller GPIOs from high-noise CAN/LIN bus transceiver control lines while latching status bits. IC Role / Device Role / Timing Role: Synchronous register capturing 8-bit status flags on rising CP edge; OE enables dynamic bus sharing with other peripherals. Use Value: Prevents bus contention during MCU interrupt service routines by decoupling register update timing from output enable timing. |
Use Scenario: Capturing door lock/unlock sensor states before routing to diagnostic controller via shared LIN bus. IC Role / Device Role / Timing Role: Edge-triggered storage element holding mechanical switch debounced values; 3-state outputs isolate diagnostics port during normal operation. Use Value: Eliminates need for external pull-ups and reduces standby current by disabling outputs when not actively reporting faults. |
| Test Equipment Digital Pattern Generator | Legacy Instrumentation Bus Extender |
|
Use Scenario: Generating precise 8-bit stimulus patterns synchronized to system clock in automated test fixtures. IC Role / Device Role / Timing Role: Deterministic data latch aligning pattern updates to master clock edge; propagation delay <13 ns ensures sub-20 ns timing resolution. Use Value: Enables repeatable, jitter-free waveform generation without added timing uncertainty from asynchronous buffers. |
Use Scenario: Extending 8-bit ISA or PC/104 bus segments with isolated, direction-controlled data paths in modular instrumentation racks. IC Role / Device Role / Timing Role: Bidirectional bus interface component providing controlled signal flow between CPU and peripheral cards using OE-driven tristate control. Use Value: Supports hot-swap capable backplane designs by preventing back-driving during card insertion/removal sequences. |
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 |
|---|---|---|---|
| SN74HCT374N | Dual-in-line package (PDIP-20); higher thermal resistance (θJA = 70 °C/W vs. 55 °C/W for SO20); identical electrical specs | Suitable for prototyping or through-hole PCBs but not for high-density surface-mount assemblies | Select when manual soldering or breadboard validation is required prior to SO20 production layout |
| 74LVC374APW | Lower VCC range (1.65–3.6 V); CMOS inputs; 3.5 ns tpd @ 3.3 V; TSSOP20 only | Designed for 3.3 V systems; incompatible with 5 V TTL signaling without level translation | Choose only for new 3.3 V designs where speed and power efficiency outweigh 5 V interoperability needs |
Compared with SN74HCT374N and 74LVC374APW, the 74HCT374D,653 uniquely balances 5 V TTL compatibility, SO20 thermal performance, and industrial temperature support - making it optimal for retrofitting legacy 5 V systems requiring surface-mount reliability.
Availability
74HCT374D,653 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, automated test equipment, and legacy instrumentation bus extenders requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT374D,653 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, analog, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in industrial and automotive applications.
The 74HCT374D,653 belongs to Nexperia's 74HCT logic family - engineered specifically for seamless integration between legacy TTL systems and modern CMOS-based controllers while maintaining robust operation across harsh environmental conditions.
FAQ
What is the maximum clock frequency supported by the 74HCT374D,653?
The 74HCT374D,653 supports up to 48 MHz maximum clock frequency at VCC = 5 V with CL = 15 pF load, verified per dynamic characteristics Table 7. This limit derives from 13 ns typical propagation delay and validated setup/hold timing margins - exceeding this frequency risks metastability or incorrect data capture.
Can the 74HCT374D,653 operate reliably at 3.3 V supply?
No - the 74HCT374D,653 is specified only for 4.5 V to 5.5 V operation. At 3.3 V, VIH and VIL thresholds fall outside guaranteed switching levels, resulting in undefined logic states. For 3.3 V systems, use the pin-compatible 74LVC374APW instead.
How does the OE pin behave during power-up sequencing?
The OE pin is not 5 V tolerant during power-up; if driven before VCC reaches 2.0 V, internal protection diodes may conduct, causing excessive current draw. Nexperia recommends holding OE HIGH (inactive) until VCC stabilizes above 4.5 V, then asserting control - consistent with recommended power-on reset timing.
Is there a thermal derating curve for continuous operation above 109 °C?
Yes - for the SO20 (SOT163-1) package, total power dissipation derates linearly at 12.3 mW/K above 109 °C. At 125 °C ambient, maximum allowed Ptot drops to ~290 mW. This requires careful PCB copper area allocation and thermal vias beneath the package to maintain junction temperature below 150 °C.
74HCT374D,653 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm 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-SO
74HCT374D,653 FAQ
1.How can I place an order for 74HCT374D,653 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT374D,653 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 74HCT374D,653 reliable?
The price and inventory of 74HCT374D,653 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT374D,653 is usually 5 days.
3.What payment methods are accepted for 74HCT374D,653?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT374D,653 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT374D,653?
74HCT374D,653 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT374D,653 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 74HCT374D,653?
For technical support, including 74HCT374D,653 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT374D,653 requirements.
6.How does Aetrix verify that 74HCT374D,653 is sourced from the original manufacturer or authorized distributors?
All 74HCT374D,653 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 74HCT374D,653 meets industry standards.
7.What is the process for return or replacement of 74HCT374D,653?
All 74HCT374D,653 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT374D,653, 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 74HCT374D,653 part is unused and in its original packaging.
Return procedure for 74HCT374D,653:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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