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Texas Instruments SN74LVC2G74DCUT
- Part No.:
- SN74LVC2G74DCUT
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
SN74LVC2G74DCUT.pdf
- Description:
- IC FF D-TYPE SNGL 1BIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,896
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Product details
Overview
SN74LVC2G74DCUT from Texas Instruments is a single positive-edge-triggered D-type flip-flop with asynchronous clear (CLR) and preset (PRE), designed for 1.65 V to 5.5 V operation. It delivers 5.9 ns maximum propagation delay at 3.3 V, ±24 mA output drive, and supports Ioff partial-power-down mode. It serves as a synchronous storage element in clock-domain interfacing and signal synchronization circuits within compact digital systems.
For engineers reviewing the SN74LVC2G74DCUT datasheet, SN74LVC2G74DCUT pinout, SN74LVC2G74DCUT application, or SN74LVC2G74DCUT equivalent, key selection criteria include its VSSOP-8 package footprint, guaranteed 120 MHz max clock frequency at –40°C to +125°C, overvoltage-tolerant inputs up to 5.5 V, and Ioff-enabled live insertion capability in mixed-voltage board designs.
Technical Context
This device implements a classic master–slave D-flip-flop architecture with dual asynchronous control inputs (PRE and CLR), where low-active assertion forces Q and Q outputs to complementary logic states independent of clock or data. Its edge-triggering mechanism responds to voltage thresholds-not slew rate-ensuring robust timing across varying input rise/fall times.
The integrated Ioff circuitry disables all outputs when VCC = 0 V, blocking reverse current flow from powered sections into unpowered logic, enabling hot-plug and partial-power-down system architectures. Input tolerance to 5.5 V allows direct interfacing with 5 V signals while operating from 1.8 V or 3.3 V supplies, supporting level translation without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - Enables operation across 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains |
| tpd (max) | 5.9 ns at VCC = 3.3 V - Supports ≥169 MHz data capture in high-speed synchronous logic |
| fmax | 140 MHz at –40°C to +125°C - Validates real-time performance in industrial temperature environments |
| Ioff Current | ±10 μA max - Prevents back-drive damage during power sequencing or hot-swap events |
| Output Drive | ±24 mA at VCC = 3.3 V - Drives standard CMOS loads and short PCB traces without buffering |
| Input Voltage Range | 0 V to 5.5 V - Accepts 5 V TTL/CMOS signals directly into 1.8 V or 3.3 V systems |
| Operating Temp | –40°C to +125°C - Qualified for under-hood automotive, industrial control, and telecom infrastructure |
Pinout & Package
VSSOP-8 (DCU) package: 2.30 mm × 2.00 mm body, 0.5 mm lead pitch, exposed pad not present, RoHS-compliant NiPdAu/Sn lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CLK | Clock input | Positive-edge-sensitive trigger; threshold-based (not slew-dependent); accepts 0–5.5 V |
| 2 D | Data input | Synchronous data source; sampled on CLK rising edge when PRE/CLR inactive (high) |
| 3 Q | True output | Non-inverted registered output; drives ±24 mA at 3.3 V; VOL ≤ 0.55 V @ 24 mA |
| 4 GND | Ground reference | Primary return path for logic and output currents; must be low-impedance for noise immunity |
| 5 Q | Inverted output | Complementary registered output; matches Q timing within 0.3 ns skew (typical) |
| 6 CLR | Asynchronous clear | Active-low reset: forces Q = L, Q = H regardless of CLK or D state |
| 7 PRE | Asynchronous preset | Active-low set: forces Q = H, Q = L regardless of CLK or D state |
| 8 VCC | Supply voltage | Power rail for internal logic and output drivers; requires local 0.1 μF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Dies-as-package construction reduces footprint to 2.30 mm × 2.00 mm - ideal for space-constrained PCB layouts |
| Ioff partial-power-down | Disables outputs at VCC = 0 V, eliminating back-current risk during board hot-swap or multi-rail sequencing |
| Overvoltage-tolerant inputs | Accepts 5.5 V signals while powered from 1.65–5.5 V - enables 5 V ↔ 3.3 V ↔ 1.8 V level translation without external resistors |
| Low ground bounce (VOLP) | < 0.8 V typical at VCC = 3.3 V - minimizes switching noise coupling into shared ground planes |
| ESD robustness | 2000 V HBM, 1000 V CDM - exceeds JEDEC JESD22-A114 and JESD22-C101 for reliable manufacturing handling |
Applications
| LED Display Row Drivers | Industrial I/O Expanders |
|---|---|
Use Scenario: Driving multiplexed LED segments in panel displays requiring precise timing and low-latency update cycles. IC Role / Device Role / Timing Role: Synchronizes column enable signals with scan clock; latches display data per row using PRE/CLR for blanking control. Use Value: 5.9 ns tpd ensures sub-10 ns setup/hold margin at 100 Hz refresh rates; ±24 mA drive directly powers common-anode LED rows without external FETs. | Use Scenario: Adding isolated, glitch-free GPIO extension points to PLC or motor controller mainboards operating across –40°C to +125°C. IC Role / Device Role / Timing Role: Registers sensor or switch inputs synchronized to system clock; uses CLR/PRE for hardware-initiated fault reset or safe startup initialization. Use Value: Ioff protection prevents backfeed from 24 V I/O rails into 3.3 V MCU domains during power-up/down; 125°C rating supports convection-cooled enclosures. |
| Telecom Line Card Buffers | Server Baseboard Management |
Use Scenario: Isolating and retiming control signals between FPGA fabric and hot-pluggable SFP+ modules in carrier-grade switches. IC Role / Device Role / Timing Role: Acts as a clock-domain crossing (CDC) synchronizer for module presence detection and reset coordination signals. Use Value: Overvoltage-tolerant inputs accept 5 V hot-swap detect signals; NanoFree™ VSSOP-8 fits dense front-panel routing; MSL-1 supports reflow assembly. | Use Scenario: Latching power-on reset and watchdog timeout signals in server BMC firmware to enforce deterministic boot sequences. IC Role / Device Role / Timing Role: Stores critical status bits (e.g., "PSU OK", "Fan Fail") with asynchronous PRE/CLR for immediate hardware-level assertion. Use Value: Guaranteed operation at 125°C ambient meets server chassis thermal specs; low ICC (10 μA) minimizes always-on power draw in sleep states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G74DCU3 | Single DFF in same VSSOP-8 package; identical electrical specs but lacks PRE input (CLR-only) | Not suitable where independent preset functionality is required (e.g., active-high initialization) | Select SN74LVC2G74DCUT when both asynchronous set and reset are needed per channel |
| 74LVC2G74GM,115 | Nexperia's pin-compatible VSSOP-8 variant; same 1.65–5.5 V range, but max fmax = 125 MHz at 125°C (vs. 140 MHz) | Slightly lower timing margin in high-temp telecom applications; identical Ioff and drive strength | Choose SN74LVC2G74DCUT for maximum clock frequency headroom above 125 MHz at full temperature range |
Compared with SN74LVC1G74DCU3 and 74LVC2G74GM,115, SN74LVC2G74DCUT uniquely provides dual asynchronous controls (PRE + CLR) while delivering the highest verified clock frequency (140 MHz) across –40°C to +125°C - making it optimal for safety-critical or thermally demanding synchronous logic nodes.
Availability
SN74LVC2G74DCUT is available at Aetrix Electronics and suitable for industrial I/O expanders, telecom line card buffers, and server baseboard management systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant VSSOP packaging.
Supply support for SN74LVC2G74DCUT 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions with over 90 years of innovation in high-reliability IC design and manufacturing.
The SN74LVC2G74 belongs to TI's LVC logic family - engineered for low-voltage, high-speed, mixed-signal interface applications in industrial automation, communications infrastructure, and computing platforms.
FAQ
What is the maximum clock frequency supported by SN74LVC2G74DCUT across its full temperature range?
SN74LVC2G74DCUT supports up to 140 MHz maximum clock frequency when operated from –40°C to +125°C at VCC = 3.3 V. This value is validated per TI's SCES203Q datasheet Section 6.7 (Timing Requirements, –40°C to +125°C). At room temperature (25°C), the device achieves up to 200 MHz at VCC = 5 V. The 140 MHz rating ensures timing margin for real-time control loops in harsh thermal environments.
Does SN74LVC2G74DCUT support level translation between 5 V and 3.3 V logic domains?
Yes, SN74LVC2G74DCUT supports bidirectional level translation: its inputs tolerate voltages up to 5.5 V regardless of VCC (which can be 1.65–5.5 V), allowing 5 V signals to safely drive the device while powered from 3.3 V or 1.8 V. Outputs swing rail-to-rail (0 V to VCC), so a 3.3 V-powered SN74LVC2G74DCUT produces 3.3 V logic levels compatible with downstream 3.3 V receivers.
How does the Ioff feature function in SN74LVC2G74DCUT, and what design benefit does it provide?
The Ioff feature in SN74LVC2G74DCUT disables all outputs when VCC = 0 V, limiting leakage current to ±10 μA max. This prevents damaging back-current flow from live system buses into an unpowered device - critical for hot-plug modules, partial-power-down states, and multi-rail power sequencing. It eliminates need for external isolation switches or diodes in such architectures.
What package type and dimensions does SN74LVC2G74DCUT use, and is it compatible with standard VSSOP-8 footprints?
SN74LVC2G74DCUT uses the DCU package: an 8-pin Very Small Outline Package (VSSOP) measuring 2.30 mm × 2.00 mm with 0.5 mm lead pitch. It is fully compatible with industry-standard VSSOP-8 land patterns (JEDEC MO-178AC), including solder mask and paste stencil recommendations. The part marking "(C74J, C74Q, C74R)" appears on the top surface per TI's orderable addendum.
Can SN74LVC2G74DCUT operate reliably at 125°C ambient temperature, and what specifications are guaranteed at that condition?
Yes, SN74LVC2G74DCUT is fully specified for continuous operation from –40°C to +125°C ambient. At +125°C, TI guarantees tpd ≤ 6.9 ns (VCC = 3.3 V), fmax ≥ 140 MHz, Ioff ≤ ±10 μA, and output drive ≥ ±16 mA. These parameters are documented in Sections 6.7, 6.9, and 6.5 of the SCES203Q datasheet - confirming suitability for under-hood automotive, industrial motor drives, and telecom base station applications.
SN74LVC2G74DCUT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 8-VFSOP (0.091", 2.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Set(Preset) and Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Clock Frequency:
- 140 MHz
- Max Propagation Delay @ V, Max CL:
- 5.4ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 32mA
- Voltage - Supply:
- 1.65V ~ 5.5V
- Current - Quiescent (Iq):
- 10 µA
- Input Capacitance:
- 5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
SN74LVC2G74DCUT FAQ
1.How can I place an order for SN74LVC2G74DCUT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC2G74DCUT 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 SN74LVC2G74DCUT reliable?
The price and inventory of SN74LVC2G74DCUT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC2G74DCUT is usually 5 days.
3.What payment methods are accepted for SN74LVC2G74DCUT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC2G74DCUT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC2G74DCUT?
SN74LVC2G74DCUT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC2G74DCUT 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 SN74LVC2G74DCUT?
For technical support, including SN74LVC2G74DCUT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC2G74DCUT requirements.
6.How does Aetrix verify that SN74LVC2G74DCUT is sourced from the original manufacturer or authorized distributors?
All SN74LVC2G74DCUT 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 SN74LVC2G74DCUT meets industry standards.
7.What is the process for return or replacement of SN74LVC2G74DCUT?
All SN74LVC2G74DCUT units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC2G74DCUT, 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 SN74LVC2G74DCUT part is unused and in its original packaging.
Return procedure for SN74LVC2G74DCUT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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