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Texas Instruments SN74LVC74ADRG4
- Part No.:
- SN74LVC74ADRG4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74LVC74ADRG4.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,765
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Product details
Overview
SN74LVC74ADRG4 from Texas Instruments is a dual positive-edge-triggered D-type flip-flop with independent preset and clear inputs, operating from 1.65 V to 3.6 V supply, delivering 5.2 ns propagation delay at 3.3 V, and supporting 5.5 V-tolerant inputs for mixed-voltage interfacing in digital control logic circuits.
For engineers reviewing the SN74LVC74ADRG4 datasheet, SN74LVC74ADRG4 pinout, SN74LVC74ADRG4 application, or SN74LVC74ADRG4 equivalent, this device serves as a low-voltage, high-speed storage element in clock-synchronized state machines, frequency dividers, and data latching where rail-to-rail input tolerance and sub-6 ns timing are critical.
Technical Context
The SN74LVC74ADRG4 integrates two independent edge-triggered D flip-flops sharing no internal coupling-each with dedicated CLK, D, PRE, CLR, Q, and Q̅ terminals. Its CMOS design enables balanced output drive, overvoltage-tolerant inputs (up to 5.5 V), and operation across –40°C to 125°C ambient temperature.
It supports asynchronous preset and clear functions active-low, enabling immediate state initialization regardless of clock phase. Timing behavior is defined by setup/hold windows (e.g., 3.0 ns tsu at 3.3 V), pulse-width requirements (≥3.3 ns for PRE/CLR), and maximum clock frequency up to 150 MHz under industrial temperature conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 3.6 V - Enables direct interface with 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. |
| Input Voltage Tolerance | Up to 5.5 V - Allows safe connection to legacy 5 V buses while powered from lower VCC, simplifying mixed-voltage board design. |
| Max Propagation Delay | 5.2 ns at VCC = 3.3 V - Supports reliable operation in high-speed synchronous logic paths up to ~150 MHz in optimized layouts. |
| Output Drive Strength | ±24 mA at VCC = 3 V - Sufficient to drive multiple LVC loads or moderate capacitive loads without external buffers. |
| Operating Temperature | –40°C to 125°C - Qualified for automotive under-hood, industrial motor control, and telecom infrastructure applications. |
| ESD Robustness | ±2000 V HBM, ±1000 V CDM - Meets JEDEC JESD22 standards, reducing susceptibility to handling damage during assembly. |
Pinout & Package
SN74LVC74ADRG4 is packaged in a 14-pin SOIC (D) package measuring 8.65 mm × 6.00 mm body size, with gull-wing leads and standard 1.27 mm pitch. The package is RoHS-compliant, lead-free (NIPDAU), and rated MSL-1 for unlimited floor life.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLK, 2CLK | Positive-edge clock input | Triggers synchronous data capture on rising transition; threshold is voltage-based, not slew-rate dependent. |
| 1D, 2D | Data input | Samples and transfers to Q/Q̅ outputs only when PRE and CLR are high and within setup/hold timing windows. |
| 1PRE, 2PRE | Asynchronous preset input | Pull low to force Q = HIGH, Q̅ = LOW immediately-overrides clock and data, independent of other inputs. |
| 1CLR, 2CLR | Asynchronous clear input | Pull low to force Q = LOW, Q̅ = HIGH immediately-functions identically to PRE but with opposite output polarity. |
| 1Q, 2Q / 1Q̅, 2Q̅ | True and complement outputs | Provide non-inverted and inverted registered outputs; both driven actively-no open-drain or weak pull-ups. |
| VCC, GND | Power supply and reference | Single-supply operation; requires local 0.1 µF bypass capacitor per VCC pin for stable switching performance. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range (1.65–3.6 V) | Supports interoperability across 1.8 V, 2.5 V, and 3.3 V system rails without external voltage translation. |
| 5.5 V-tolerant inputs | Enables direct connection to higher-voltage control signals (e.g., 5 V microcontroller GPIO) while powered at 3.3 V or lower. |
| Sub-6 ns propagation delay | Meets timing budgets in high-frequency clock distribution, counters, and pipeline registers up to 150 MHz in industrial temp range. |
| Asynchronous PRE/CLR | Allows deterministic initialization or reset of flip-flop states independent of clock timing-critical for power-up sequencing and fault recovery. |
| Low dynamic power consumption | Typical ICC = 10 µA at VCC = 3.6 V ensures minimal quiescent load in battery-backed or energy-sensitive systems. |
Applications
| Frequency Divider | Digital State Machine |
|---|---|
Use Scenario: Dividing a master clock signal by two for peripheral timing or baud rate generation. IC Role / Device Role / Timing Role: Configured as toggle flip-flop (Q → D feedback), generating precise 50% duty-cycle output synchronized to input clock edges. Use Value: Eliminates need for external counter ICs; achieves exact 2× division with zero latency accumulation across stages. |
Use Scenario: Implementing finite-state logic in programmable logic controllers or sensor interface sequencers. IC Role / Device Role / Timing Role: Storing current state bits and advancing on each clock cycle using combinatorial next-state logic feeding D inputs. Use Value: Provides deterministic, glitch-free state transitions with predictable setup/hold margins and asynchronous reset capability. |
| Data Synchronizer | Bus Interface Register |
Use Scenario: Crossing asynchronous data between clock domains (e.g., MCU to FPGA or ADC interface). IC Role / Device Role / Timing Role: Capturing metastable-prone signals on first-stage CLK, then re-timing through second-stage CLK for clean domain crossing. Use Value: Reduces metastability risk via dual-stage synchronization while maintaining full data integrity at up to 100 MHz clock rates. |
Use Scenario: Latching parallel address/data bus signals in microprocessor-based systems or memory-mapped peripherals. IC Role / Device Role / Timing Role: Holding stable bus values during read/write cycles, with PRE/CLR enabling hardware-initiated register clearing or initialization. Use Value: Ensures noise-immune, edge-aligned sampling of wide buses without requiring custom ASIC or CPLD logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual D-flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC74ADR | Same functionality and pinout; differs only in tape-and-reel packaging (2500 pcs vs. 2000 pcs) and part marking suffix. | No functional or electrical difference; identical thermal, timing, and DC specs across –40°C to 125°C. | Select SN74LVC74ADR for automated SMT placement where larger reel quantity improves line efficiency. |
| 74LVC74AD,118 (Nexperia) | Pin-compatible dual DFF with 1.65–3.3 V range; max tpd = 5.5 ns at 3.3 V; lacks 5.5 V input tolerance. | Not suitable for mixed-voltage interfaces requiring 5 V input compatibility; otherwise matches in speed and drive strength. | Choose only if system operates strictly within 3.3 V domain and 5 V tolerance is unnecessary-verify layout-level ESD robustness separately. |
Compared with SN74LVC74ADR and 74LVC74AD,118, the SN74LVC74ADRG4 offers guaranteed 5.5 V input tolerance and identical industrial temperature qualification, making it the preferred choice for mixed-voltage designs requiring long-term reliability and interoperability assurance.
Availability
SN74LVC74ADRG4 is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, and medical instrumentation requiring stable component supply, extended temperature operation, and verified mixed-voltage interface capability.
Supply support for SN74LVC74ADRG4 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, industry-standard components.
The SN74LVC74ADRG4 belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-power, high-speed digital interfacing in space-constrained, thermally demanding applications across industrial and communications markets.
FAQ
What is the maximum clock frequency supported by SN74LVC74ADRG4?
The SN74LVC74ADRG4 supports up to 150 MHz maximum clock frequency when operated at VCC = 3.3 V and TA = –40°C to 85°C. At full industrial temperature range (–40°C to 125°C), the maximum is 100 MHz. These values are validated per TI's switching characteristics tables and assume proper load and layout conditions.
Does SN74LVC74ADRG4 support 5 V input signals while powered at 3.3 V?
Yes, SN74LVC74ADRG4 features 5.5 V-tolerant inputs, allowing safe operation with 5 V logic signals even when VCC is as low as 1.65 V. This eliminates external level-shifting circuitry in mixed-voltage systems and is explicitly confirmed in TI's Recommended Operating Conditions table.
What is the function of the PRE and CLR pins on SN74LVC74ADRG4?
PRE (preset) and CLR (clear) are asynchronous, active-low control inputs on SN74LVC74ADRG4. Pulling PRE low forces Q = HIGH and Q̅ = LOW; pulling CLR low forces Q = LOW and Q̅ = HIGH-both actions occur immediately, overriding clock and data inputs. Both must be held high for synchronous D-to-Q transfer.
Can SN74LVC74ADRG4 be used as a divide-by-two frequency divider?
Yes, SN74LVC74ADRG4 can implement a precise divide-by-two function by connecting Q to D and using the same clock on CLK. Each rising edge toggles the output, yielding a 50% duty cycle at half the input frequency-confirmed in TI's Application Information section and widely used in clock tree design.
What package type is used for SN74LVC74ADRG4?
SN74LVC74ADRG4 uses a 14-pin SOIC (D) package with 8.65 mm × 6.00 mm body dimensions, gull-wing leads, and 1.27 mm pitch. It is RoHS-compliant, lead-free (NIPDAU), and rated MSL-1 per JEDEC J-STD-020, supporting standard reflow profiles without moisture sensitivity concerns.
SN74LVC74ADRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Set(Preset) and Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 150 MHz
- Max Propagation Delay @ V, Max CL:
- 5.2ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- 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:
- 14-SOIC
SN74LVC74ADRG4 FAQ
1.How can I place an order for SN74LVC74ADRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC74ADRG4 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 SN74LVC74ADRG4 reliable?
The price and inventory of SN74LVC74ADRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC74ADRG4 is usually 5 days.
3.What payment methods are accepted for SN74LVC74ADRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC74ADRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC74ADRG4?
SN74LVC74ADRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC74ADRG4 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 SN74LVC74ADRG4?
For technical support, including SN74LVC74ADRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC74ADRG4 requirements.
6.How does Aetrix verify that SN74LVC74ADRG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC74ADRG4 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 SN74LVC74ADRG4 meets industry standards.
7.What is the process for return or replacement of SN74LVC74ADRG4?
All SN74LVC74ADRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC74ADRG4, 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 SN74LVC74ADRG4 part is unused and in its original packaging.
Return procedure for SN74LVC74ADRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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