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Texas Instruments SN74LVC2G74DCURG4
- Part No.:
- SN74LVC2G74DCURG4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
SN74LVC2G74DCURG4.pdf
- Description:
- IC FF D-TYPE SNGL 1BIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,803
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Product details
Overview
SN74LVC2G74 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 maximum propagation delay at 3.3 V, ±24 mA output drive, and Ioff support for live insertion and partial-power-down applications. It serves as a synchronous storage element in digital control logic, data synchronization, and state-holding circuits.
For engineers reviewing the SN74LVC2G74 datasheet, SN74LVC2G74 pinout, SN74LVC2G74 application, or SN74LVC2G74 equivalent, key selection considerations include its dual asynchronous control inputs, rail-to-rail input tolerance up to 5.5 V, guaranteed operation from –40°C to +125°C, low ICC of 10 μA max, and VSSOP-8 (DCU) package compatibility with space-constrained PCB layouts.
Technical Context
This device implements a master–slave D-flip-flop architecture triggered on the rising edge of CLK, with independent active-low asynchronous PRE and CLR inputs that override clocked behavior. Its Ioff circuitry disables outputs when VCC = 0 V, preventing back-drive current and enabling hot-swap capability in multi-rail systems.
It supports voltage translation across domains: inputs tolerate 5.5 V regardless of VCC (e.g., 5 V logic driving 3.3 V or 1.8 V systems), and outputs swing rail-to-rail (VOL ≤ 0.45 V at 4 mA, VOH ≥ VCC – 0.1 V), making it suitable for mixed-voltage interface bridging without external level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - Enables interoperability across 1.8 V, 2.5 V, 3.3 V, and 5 V logic families. |
| tpd (max) | 5.9 ns at 3.3 V - Supports >140 MHz clock rates in high-speed control paths. |
| Output Drive | ±24 mA at 3.3 V - Directly drives multiple LVC/LVT inputs or small capacitive loads without buffers. |
| Ioff Current | ±10 μA max - Ensures safe isolation during power sequencing or partial shutdown. |
| Input Voltage Tolerance | Up to 5.5 V - Allows 5 V signals to safely interface with lower-VCC systems. |
| Operating Temp | –40°C to +125°C - Qualified for automotive under-hood and industrial motor-control environments. |
| ESD Rating | HBM: 2000 V - Meets JEDEC JESD22-A114 for robust handling in manufacturing and field use. |
Pinout & Package
The SN74LVC2G74DCURG4 is packaged in an 8-pin VSSOP (DCU) with body dimensions 2.30 mm × 2.00 mm and 0.5 mm pitch. This thermally enhanced, surface-mount package supports automated assembly and offers improved thermal resistance (RθJA = 227°C/W) versus standard SOIC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CLK | Clock input | Rising-edge sensitive; triggers synchronous data transfer from D to Q/Q when PRE and CLR are high. |
| 2 - D | Data input | Samples and latches logic state on CLK rising edge if asynchronous controls are inactive. |
| 3 - Q | Non-inverted output | Active-high registered output; retains state between clock edges unless overridden by PRE/CLR. |
| 4 - GND | Ground reference | Return path for all internal logic and output currents; must be low-impedance for noise immunity. |
| 5 - Q | Inverted output | Complementary to Q; enables direct access to both logic states without external inversion. |
| 6 - CLR | Asynchronous clear | Active-low; forces Q = 0 and Q = 1 immediately, independent of CLK or D. |
| 7 - PRE | Asynchronous preset | Active-low; forces Q = 1 and Q = 0 immediately, overriding clocked behavior. |
| 8 - VCC | Supply voltage | Power rail for core logic and I/O; requires local 0.1 μF bypass capacitor per TI layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Dies-as-package construction reduces footprint to 2.30 mm × 2.00 mm - ideal for ultra-dense portable and telecom modules. |
| Ioff partial-power-down | Disables outputs at VCC = 0 V, eliminating backflow current and enabling safe hot-plug operation in modular systems. |
| Rail-to-rail input tolerance | Accepts 0–5.5 V inputs at any valid VCC - eliminates need for external level translators in mixed-voltage designs. |
| Low ground bounce (VOLP) | < 0.8 V typical at 3.3 V - minimizes switching noise coupling into shared ground planes. |
| High noise immunity | VIH/VIL thresholds scale with VCC (e.g., VIH = 0.7×VCC at 4.5–5.5 V) - ensures reliable logic detection across supply variations. |
Applications
| LED Display Control | Industrial Motor Driver Interface |
|---|---|
Use Scenario: Driving column drivers in multiplexed LED signage where timing-critical data latching synchronizes with scan clocks. IC Role / Device Role / Timing Role: Synchronizes parallel data from MCU to display controller using precise CLK edge alignment and holds state during blanking intervals. Use Value: Eliminates ghosting via clean Q/Q toggling and withstands 5 V row-driver signals while operating at 3.3 V MCU logic levels. | Use Scenario: Isolating and latching enable/disable commands between microcontroller GPIO and H-bridge gate drivers in servo systems. IC Role / Device Role / Timing Role: Provides glitch-free, edge-triggered command registration with fail-safe reset (CLR) during power-up or fault recovery. Use Value: Prevents unintended motor activation via asynchronous CLR assertion and tolerates noisy 24 V system grounds through Ioff isolation. |
| Network Switch Data Path | Server Board Management Logic |
Use Scenario: Capturing status flags (link up/down, error detect) from PHYs before forwarding to management MCU over I²C or SPI. IC Role / Device Role / Timing Role: Acts as a metastability-hardened synchronizer between asynchronous PHY event domains and synchronous CPU clock domain. Use Value: Reduces failure-in-time (FIT) rate with 5.9 ns tpd and guaranteed setup/hold margins across –40°C to +125°C. | Use Scenario: Implementing hardware-based power-on reset sequencing and watchdog timeout latching in server baseboard management controllers (BMC). IC Role / Device Role / Timing Role: Stores critical boot-state bits (e.g., "PSU OK", "Fan Fail") with non-volatile hold via PRE/CLR-controlled initialization. Use Value: Ensures deterministic startup behavior using active-low asynchronous controls tied to supervisor IC outputs. |
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 |
|---|---|---|---|
| SN74LVC1G74DBVR | Single-channel, same logic function, but in SOT-23-6 (6-pin) package with no Q output - only Q available. | Lacks inverted output (Q), limiting use in differential signaling or complementary control paths. | Select when board space is extremely constrained and only non-inverted output is required. |
| 74LVC2G74GW,125 | NXP variant in SC-88 (TSOP-6) package; identical electrical specs but different pinout (CLK/D swapped) and MSL3 vs MSL1 reflow rating. | Requires PCB redesign due to incompatible pin mapping and tighter moisture sensitivity handling requirements. | Choose only if sourcing constraints mandate NXP supply chain and layout revision is feasible. |
Compared with SN74LVC2G74DCURG4, SN74LVC1G74DBVR sacrifices functional completeness for size reduction, while 74LVC2G74GW,125 introduces layout and process compatibility risks despite matching logic behavior - making SN74LVC2G74DCURG4 the optimal balance of feature integrity, thermal performance, and manufacturability in VSSOP-8.
Availability
SN74LVC2G74DCURG4 is available at Aetrix Electronics and suitable for industrial motor drivers, telecom infrastructure equipment, and server board management systems requiring stable component supply, extended temperature operation, and long-term production continuity.
Supply support for SN74LVC2G74DCURG4 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 decades of expertise in high-reliability logic families and advanced packaging technologies.
The SN74LVC2G74 belongs to TI's LVC (Low-Voltage CMOS) logic portfolio, engineered for low-power, high-speed interfacing across mixed-voltage systems in industrial automation, communications, and computing infrastructure.
FAQ
What is the maximum clock frequency supported by SN74LVC2G74DCURG4?
The SN74LVC2G74DCURG4 supports a maximum clock frequency of 140 MHz at VCC = 3.3 V and TA = +125°C, and up to 200 MHz at VCC = 5 V and TA = +85°C, as specified in the Switching Characteristics tables. These values derive from measured tpd (5.9 ns min) and tw (2 ns min pulse width), ensuring reliable edge-triggered operation within recommended conditions.
Does SN74LVC2G74DCURG4 support 5 V input signals when powered at 3.3 V?
Yes, SN74LVC2G74DCURG4 supports input voltages up to 5.5 V regardless of VCC level, including when VCC = 3.3 V. This overvoltage-tolerant input design allows direct connection of 5 V signals without external level-shifting components, simplifying mixed-voltage interface implementation.
How does the Ioff feature of SN74LVC2G74DCURG4 protect the system during power-down?
The Ioff feature in SN74LVC2G74DCURG4 disables all outputs when VCC = 0 V, limiting Ioff current to ±10 μA max. This prevents damaging backflow current from live signal lines into the unpowered device, enabling safe hot-swap and partial-power-down operation in modular or multi-rail systems.
What is the purpose of the PRE and CLR pins on SN74LVC2G74DCURG4?
The PRE (pin 7) and CLR (pin 6) pins on SN74LVC2G74DCURG4 are active-low asynchronous controls: PRE forces Q = 1 and Q = 0, while CLR forces Q = 0 and Q = 1 - both overriding clocked behavior. They provide immediate state initialization or fault recovery independent of CLK timing.
Can SN74LVC2G74DCURG4 operate reliably at 125°C ambient temperature?
Yes, SN74LVC2G74DCURG4 is fully characterized and guaranteed to operate from –40°C to +125°C ambient temperature. Electrical parameters including tpd, setup/hold times, and output drive are validated across this range, and thermal metrics (RθJA = 227°C/W) confirm suitability for high-temperature industrial and automotive under-hood applications.
SN74LVC2G74DCURG4 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:
- 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:
- 8-VSSOP
SN74LVC2G74DCURG4 FAQ
1.How can I place an order for SN74LVC2G74DCURG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC2G74DCURG4 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 SN74LVC2G74DCURG4 reliable?
The price and inventory of SN74LVC2G74DCURG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC2G74DCURG4 is usually 5 days.
3.What payment methods are accepted for SN74LVC2G74DCURG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC2G74DCURG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC2G74DCURG4?
SN74LVC2G74DCURG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC2G74DCURG4 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 SN74LVC2G74DCURG4?
For technical support, including SN74LVC2G74DCURG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC2G74DCURG4 requirements.
6.How does Aetrix verify that SN74LVC2G74DCURG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC2G74DCURG4 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 SN74LVC2G74DCURG4 meets industry standards.
7.What is the process for return or replacement of SN74LVC2G74DCURG4?
All SN74LVC2G74DCURG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC2G74DCURG4, 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 SN74LVC2G74DCURG4 part is unused and in its original packaging.
Return procedure for SN74LVC2G74DCURG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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