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Texas Instruments SN74LVC2G74DCTRE4
- Part No.:
- SN74LVC2G74DCTRE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 8-LSSOP, 8-MSOP (0.110", 2.80mm Width)
- Datasheet:
-
SN74LVC2G74DCTRE4.pdf
- Description:
- IC FF D-TYPE SNGL 1BIT SM8
- Quantity:
- Payment:
- Shipping:
Inventory:1,690
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Product details
Overview
SN74LVC2G74DCTRE4 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, featuring 5.9 ns max propagation delay at 3.3 V, ±24 mA output drive, and Ioff support for live insertion and partial-power-down applications - used in LED display timing control and network switch data synchronization.
For engineers reviewing the SN74LVC2G74DCTRE4 datasheet, SN74LVC2G74DCTRE4 pinout, SN74LVC2G74DCTRE4 application, or SN74LVC2G74DCTRE4 equivalent, key selection criteria include its dual asynchronous control inputs, guaranteed operation up to +125°C, NanoFree™-compatible SM8 package, and overvoltage-tolerant inputs accepting up to 5.5 V independent of VCC.
Technical Context
This device implements a synchronous edge-triggered storage element with fully independent active-low asynchronous set/reset logic: CLR forces Q low and PRE forces Q high regardless of clock or data state. Its Ioff circuitry disables outputs during power-down to block back-drive current, enabling hot-swap capability in multi-rail systems.
Timing behavior is voltage-level-triggered rather than edge-rate-dependent; setup/hold times scale with VCC (e.g., tsu = 1.3 ns at 3.3 V, 1.7 ns at 125°C), and maximum clock frequency reaches 200 MHz at 5 V and 25°C. Output drive strength is specified across full VCC range (±4 mA at 1.65 V, ±24 mA at 3 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - supports mixed-voltage system interfacing (e.g., 3.3 V logic driving 1.8 V domain via level translation) |
| tpd (max) | 5.9 ns at VCC = 3.3 V, TA = 25°C - enables reliable 160+ MHz clock operation in high-speed control paths |
| Output Drive | ±24 mA at VCC = 3 V - sufficient to directly drive multiple LVC inputs or small LEDs without external buffers |
| Ioff Current | ±10 μA max - prevents damaging back-current when powered down while other rails remain active |
| Input Voltage Tolerance | Up to 5.5 V on all inputs - allows interfacing with 5 V legacy signals even when VCC = 1.8 V or 2.5 V |
| Operating Temp | –40°C to +125°C - qualified for automotive under-hood and industrial motor drive environments |
| ESD Rating | 2000 V HBM - meets JEDEC JESD22-A114 reliability requirement for board-level handling |
Pinout & Package
SN74LVC2G74DCTRE4 uses the SM8 (8-pin Small Outline Package), measuring 2.95 mm × 2.80 mm, with gull-wing leads and RoHS-compliant NiPdAu (NIPDAU) finish. It is a surface-mount, leaded package rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CLK | Positive-edge-sensitive clock input - triggers Q/Q update only on rising transition meeting voltage threshold (not slew-rate dependent) |
| 2 | D | Data input - sampled at CLK rising edge if PRE and CLR are high; holds value until next valid clock edge |
| 3 | Q | Non-inverted output - reflects D input state after CLK edge, with guaranteed 5.9 ns max delay at 3.3 V |
| 4 | GND | Ground reference - must be connected to system common; required for Ioff functionality and ESD protection path |
| 5 | Q | Inverted output - complementary to Q; both outputs change simultaneously on clock edge |
| 6 | CLR | Asynchronous clear - active-low; forces Q = 0 and Q = 1 immediately, overriding clock and data |
| 7 | PRE | Asynchronous preset - active-low; forces Q = 1 and Q = 0 immediately, overriding clock and data |
| 8 | VCC | Power supply - supplies internal logic and output drivers; requires local 0.1 μF bypass capacitor per TI layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Die-as-package construction reduces footprint to 2.95 mm × 2.80 mm - eliminates bond wires and mold compound for improved thermal performance and signal integrity |
| Ioff partial-power-down | Outputs enter high-impedance state when VCC = 0 V - prevents reverse current flow in hot-plug or rail-shutdown scenarios |
| Overvoltage-tolerant inputs | Accepts 0–5.5 V regardless of VCC setting - enables direct connection to 5 V microcontrollers or sensors without level shifters |
| Low ground bounce (VOLP) | < 0.8 V typical at VCC = 3.3 V - minimizes noise coupling into shared ground planes in dense PCB layouts |
| Latch-up immunity | > 100 mA per JESD78 Class II - ensures robustness against transient-induced parasitic thyristor activation |
Applications
| LED Display Row Drivers | Network Switch Data Synchronization |
|---|---|
|
Use Scenario: Driving column enable lines in multiplexed LED signage with precise timing alignment across 16+ segments. IC Role / Device Role / Timing Role: Edge-triggered storage element holding row-select state between refresh cycles; PRE/CLR used for global reset or blanking. Use Value: 5.9 ns tpd ensures sub-microsecond update consistency; ±24 mA drive directly sources LED sink current without external transistors. |
Use Scenario: Aligning packet timestamp latches across multiple PHY interfaces in a 10/100 Mbps Ethernet switch ASIC subsystem. IC Role / Device Role / Timing Role: Synchronizing asynchronous event flags from different clock domains into a common timebase using metastability-hardened sampling. Use Value: Guaranteed operation to +125°C supports fanless switch chassis; Ioff prevents data corruption during partial power sequencing. |
| Industrial Motor Control Logic | Embedded Power Button Debounce |
|
Use Scenario: Implementing safety-critical direction hold logic in BLDC motor gate driver sequencers where run/stop state must persist across MCU resets. IC Role / Device Role / Timing Role: Nonvolatile state latch retaining motor direction command during brief VCC dips; CLR tied to hardware fault signal. Use Value: Asynchronous CLR provides immediate stop assertion (<10 ns response); 1.65 V min VCC enables operation with brown-out tolerant supplies. |
Use Scenario: Converting noisy mechanical push-button actuation into clean, glitch-free MCU wake-up signal in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Positive-edge-triggered storage capturing first button press; PRE/CLR used for manual reset or timeout clearing. Use Value: Input overvoltage tolerance accepts 5 V button pull-ups; low ICC (10 μA max) extends battery life in always-on monitoring mode. |
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 |
|---|---|---|---|
| SN74LVC1G74DCKR | Single-channel, SC70-6 package (1.25 mm × 1.65 mm); lower drive (±12 mA at 3 V); same VCC range and Ioff | Better suited for ultra-space-constrained designs where 30% smaller footprint outweighs 50% lower drive capability | Select when board area is critical and load capacitance ≤15 pF; verify timing margins due to higher RθJA (300°C/W) |
| MC74LCX74DT | Dual D-flip-flop in TSSOP-14; 3.6 V max VCC; no Ioff; higher ICC (20 μA typ); identical pinout per channel | Applicable where dual-channel integration reduces component count, but incompatible with partial-power-down or 5 V input systems | Choose only for cost-sensitive, non-hot-swap consumer applications requiring two synchronized flip-flops in one package |
Compared with SN74LVC2G74DCTRE4, SN74LVC1G74DCKR trades drive strength and thermal performance for size reduction, while MC74LCX74DT offers channel density at the expense of Ioff support and 5 V tolerance - making SN74LVC2G74DCTRE4 uniquely balanced for industrial hot-swap and mixed-voltage use cases.
Availability
SN74LVC2G74DCTRE4 is available at Aetrix Electronics and suitable for industrial motor control, LED display timing, and network infrastructure applications requiring stable component supply, extended temperature operation, and long-term lifecycle continuity.
Supply support for SN74LVC2G74DCTRE4 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 electronic components.
SN74LVC2G74DCTRE4 belongs to the LVC logic family - engineered for low-voltage, high-speed, mixed-signal interface applications in automotive, industrial, and communications equipment where power efficiency and signal integrity are critical.
FAQ
What is the maximum clock frequency supported by SN74LVC2G74DCTRE4?
SN74LVC2G74DCTRE4 supports up to 200 MHz at VCC = 5 V and TA = 25°C, and 140 MHz at VCC = 5 V and TA = 125°C per the Switching Characteristics table. At 3.3 V, maximum frequency is 175 MHz (25°C) and 140 MHz (125°C). These values assume proper load conditions (CL ≤ 50 pF) and meet all timing requirements including setup, hold, and pulse width.
Does SN74LVC2G74DCTRE4 support partial power-down, and how is it implemented?
Yes, SN74LVC2G74DCTRE4 supports partial power-down via its Ioff feature. When VCC = 0 V, the Ioff circuitry disables all outputs, limiting leakage current to ±10 μA max and preventing backflow current from live inputs or outputs. This enables safe insertion/removal in powered-backplane systems and eliminates need for external isolation switches.
Can SN74LVC2G74DCTRE4 interface directly with 5 V logic while operating at 1.8 V VCC?
Yes, SN74LVC2G74DCTRE4 inputs tolerate voltages up to 5.5 V regardless of VCC level. When VCC = 1.8 V, the device correctly interprets 5 V input signals as logic high (VIH threshold is 0.65 × VCC = 1.17 V), enabling seamless level translation without external components - confirmed in Section 8.3 Feature Description.
What is the thermal resistance (RθJA) of the SN74LVC2G74DCTRE4 package?
The SN74LVC2G74DCTRE4 uses the DCT (SM8) package with a junction-to-ambient thermal resistance (RθJA) of 220°C/W, as specified in Section 6.4 Thermal Information. This value assumes standard JEDEC 2-layer board conditions; actual performance improves with PCB copper pour and thermal vias.
How does the asynchronous preset/clear functionality behave in SN74LVC2G74DCTRE4?
In SN74LVC2G74DCTRE4, PRE and CLR are active-low asynchronous inputs: pulling PRE low forces Q = 1 and Q = 0 immediately, while pulling CLR low forces Q = 0 and Q = 1 - both override clock and data states. When both are low, outputs go to an unstable high-high state that resolves to normal operation once either input returns high.
SN74LVC2G74DCTRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 8-LSSOP, 8-MSOP (0.110", 2.80mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Set(Preset) and Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Clock Frequency:
- 200 MHz
- Max Propagation Delay @ V, Max CL:
- 4.4ns @ 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:
- SM8
SN74LVC2G74DCTRE4 FAQ
1.How can I place an order for SN74LVC2G74DCTRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC2G74DCTRE4 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 SN74LVC2G74DCTRE4 reliable?
The price and inventory of SN74LVC2G74DCTRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC2G74DCTRE4 is usually 5 days.
3.What payment methods are accepted for SN74LVC2G74DCTRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC2G74DCTRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC2G74DCTRE4?
SN74LVC2G74DCTRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC2G74DCTRE4 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 SN74LVC2G74DCTRE4?
For technical support, including SN74LVC2G74DCTRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC2G74DCTRE4 requirements.
6.How does Aetrix verify that SN74LVC2G74DCTRE4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC2G74DCTRE4 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 SN74LVC2G74DCTRE4 meets industry standards.
7.What is the process for return or replacement of SN74LVC2G74DCTRE4?
All SN74LVC2G74DCTRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC2G74DCTRE4, 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 SN74LVC2G74DCTRE4 part is unused and in its original packaging.
Return procedure for SN74LVC2G74DCTRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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