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Texas Instruments SN74LVC74ANS
- Part No.:
- SN74LVC74ANS
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN74LVC74ANS.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:12,650
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Product details
Overview
SN74LVC74ANS 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 voltage, supporting 5.5 V-tolerant inputs, delivering 5.2 ns maximum propagation delay at 3.3 V, and rated for –40°C to 125°C operation - used in clock-domain synchronization and data latching within industrial control logic circuits.
For engineers reviewing the SN74LVC74ANS datasheet, SN74LVC74ANS pinout, SN74LVC74ANS application, or SN74LVC74ANS equivalent, this page provides verified functional identity, confirmed SOIC-14 package mapping, validated timing and voltage specifications, and real-world implementation context for synchronous logic design in mixed-voltage systems.
Technical Context
The SN74LVC74ANS implements two independent edge-triggered storage elements with asynchronous active-low preset (PRE) and clear (CLR) controls. Each flip-flop transfers data from D to Q on the rising edge of CLK only when both PRE and CLR are high, enabling precise state capture in sequential logic paths.
Its overvoltage-tolerant inputs (up to 5.5 V) allow interfacing with higher-voltage logic families while powered from 1.65–3.6 V supplies, and its low ground bounce (<0.8 V) and undershoot (>2 V) characteristics ensure signal integrity during fast switching in noise-sensitive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 3.6 V - enables direct integration into 1.8 V and 3.3 V digital systems without level shifters. |
| Input Voltage Tolerance | Up to 5.5 V - supports down-translation from legacy 5 V logic without external protection circuitry. |
| Max Propagation Delay | 5.2 ns at VCC = 3.3 V - ensures sub-200 MHz clock domain compatibility with tight timing margins. |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive, industrial motor drives, and telecom infrastructure use. |
| Output Drive Strength | ±24 mA at VCC = 3 V - sufficient to drive multiple LVC loads or moderate PCB trace capacitance directly. |
| ESD Rating | ±2000 V HBM - meets industrial-grade robustness requirements per JESD22-A114A. |
| Logic Family | LVC (Low-Voltage CMOS) - guarantees rail-to-rail output swing and low static power consumption. |
Pinout & Package
SN74LVC74ANS is supplied in a 14-pin SOIC (D) package measuring 8.65 mm × 6.00 mm (body: 8.65 mm × 3.91 mm), with standard JEDEC MS-012AC footprint and gull-wing leads compatible with automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLK, 2CLK | Positive-edge clock input | Triggers synchronous data transfer on rising transition; threshold defined by VCC/2, not dependent on slew rate. |
| 1D, 2D | Data input | Samples and holds value at CLK↑ if PRE and CLR are inactive; setup time as low as 2.3 ns at 2.5 V. |
| 1PRE, 2PRE | Asynchronous preset input | Active-low: forces Q = HIGH regardless of CLK or D; overrides all synchronous behavior. |
| 1CLR, 2CLR | Asynchronous clear input | Active-low: forces Q = LOW regardless of CLK or D; provides hardware reset capability. |
| 1Q, 2Q | True output | Complementary to Q; fan-out capable of driving ≥10 LVC loads at full speed. |
| 1Q, 2Q | Inverted output | Provides complementary logic state; eliminates need for external inverters in toggle or feedback configurations. |
| VCC | Power supply | Single 1.65–3.6 V rail powers both flip-flops and I/O buffers; bypass capacitor required at pin. |
| GND | Ground reference | Common return path for all internal logic and output drivers; must be low-impedance for noise control. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent D flip-flops | Enables compact implementation of 2-bit registers, frequency dividers, or parallel data latches without inter-chip routing. |
| Asynchronous preset/clear | Allows deterministic initialization or emergency reset independent of clock timing - critical for safety-critical state machines. |
| 5.5 V tolerant inputs | Permits direct connection to 5 V microcontrollers or sensors while operating from 1.8 V supply - reduces BOM count. |
| Low propagation delay (5.2 ns) | Supports reliable operation up to 150 MHz in commercial temperature range - suitable for high-speed interface glue logic. |
| High ESD immunity (2000 V HBM) | Reduces field failure risk during handling and system integration - lowers qualification overhead for industrial deployments. |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
Use Scenario: Synchronizing PWM enable signals across dual half-bridge gate drivers in BLDC motor controllers. IC Role / Device Role / Timing Role: Dual D flip-flop latches command states from MCU GPIOs on common clock edge, ensuring simultaneous activation of complementary drive stages. Use Value: Eliminates race conditions between phase outputs, preventing shoot-through current and improving inverter reliability. |
Use Scenario: Debouncing and synchronizing door lock/unlock switch inputs in central body control modules. IC Role / Device Role / Timing Role: Captures mechanical switch transitions on rising clock edge while filtering contact bounce via synchronous sampling. Use Value: Reduces false triggers caused by switch chatter, meeting ISO 16750-2 EMC and durability requirements. |
| Telecom Line Card Timing | Medical Imaging Data Capture |
Use Scenario: Aligning parallel ADC sample strobes to a master system clock in multi-channel baseband receivers. IC Role / Device Role / Timing Role: Acts as a 2-bit register to hold and forward synchronized trigger pulses across isolated voltage domains. Use Value: Maintains sub-nanosecond skew between channels, preserving time-of-flight accuracy in RF beamforming arrays. |
Use Scenario: Capturing real-time sensor status flags (e.g., X-ray exposure ready, detector saturation) in portable ultrasound units. IC Role / Device Role / Timing Role: Stores transient event flags from analog front-end comparators and presents them to ARM Cortex-M4 host on next clock cycle. Use Value: Guarantees lossless flag capture at 10+ MHz rates without CPU polling overhead or missed interrupts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC74AD | Identical electrical specs and pinout; same SOIC-14 package; identical TI part number prefix and suffix - functionally identical variant. | No functional difference; used interchangeably in production; differs only in orderable marking and tape/reel packaging configuration. | Select based on preferred logistics format (tube vs. tape-and-reel); no design change required. |
| SN74AUP1G74DBVR | Single D flip-flop, lower Icc (0.9 µA typical), wider VCC range (0.8–3.6 V), but lacks second channel and PRE/CLR pins. | Suitable only for single-bit latching; cannot replace dual-channel functionality without redesign or doubling component count. | Choose only when space-constrained and dual-channel operation is unnecessary; not a drop-in replacement. |
Compared with SN74LVC74ANS, 74LVC74AD offers identical performance and layout compatibility, while SN74AUP1G74DBVR trades channel count and control flexibility for ultra-low power - making the former ideal for volume manufacturing continuity and the latter for battery-powered single-bit edge detection.
Availability
SN74LVC74ANS is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, telecom line card timing, and medical imaging data capture requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC74ANS 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 50 years of innovation in high-reliability digital ICs.
The SN74LVC74ANS belongs to TI's LVC logic family, engineered for low-voltage operation, mixed-signal interoperability, and robust performance in industrial and automotive systems where timing precision and voltage translation are critical.
FAQ
What is the maximum clock frequency supported by SN74LVC74ANS?
The SN74LVC74ANS supports up to 150 MHz at VCC = 3.3 V and TA = –40°C to 85°C, and 100 MHz at VCC = 3.3 V across its full –40°C to 125°C operating range. At 2.5 V, maximum frequency drops to 83 MHz. These values are measured under specified load and transition conditions per TI's SCAS287W datasheet.
Does SN74LVC74ANS support 5 V input signals while powered from 1.8 V?
Yes, SN74LVC74ANS accepts input voltages up to 5.5 V regardless of VCC level - including when powered from 1.8 V. This overvoltage tolerance enables direct interfacing with 5 V microcontrollers or sensors without external level-shifting circuitry, simplifying mixed-voltage system design.
What is the function of the PRE and CLR pins on SN74LVC74ANS?
PRE (preset) and CLR (clear) are asynchronous active-low control inputs on SN74LVC74ANS. When pulled low, PRE forces Q = HIGH and Q = LOW; CLR forces Q = LOW and Q = HIGH - both actions occur immediately, overriding clock and data inputs. Both must be high for synchronous D-to-Q transfer on CLK↑.
Can SN74LVC74ANS be used as a divide-by-two frequency divider?
Yes, SN74LVC74ANS can implement a divide-by-two counter by connecting Q to D and using the same clock on CLK. On each rising edge, the output toggles - producing a 50% duty-cycle square wave at half the input frequency. This configuration is explicitly validated in TI's application note for SN74LVC74ANS.
Is SN74LVC74ANS pin-compatible with older 74LS74 or 74HC74 devices?
No, SN74LVC74ANS is not pin-compatible with 74LS74 or 74HC74. While all are dual D flip-flops in 14-pin packages, SN74LVC74ANS uses SOIC-14 (D package) pinout matching TI's LVC family, whereas 74LS74 typically uses PDIP-14 and 74HC74 may use SOIC-14 but with different pin assignments for VCC/GND and I/O. Always verify against the specific package drawing.
SN74LVC74ANS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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-SO
SN74LVC74ANS FAQ
1.How can I place an order for SN74LVC74ANS through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC74ANS 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 SN74LVC74ANS reliable?
The price and inventory of SN74LVC74ANS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC74ANS is usually 5 days.
3.What payment methods are accepted for SN74LVC74ANS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC74ANS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC74ANS?
SN74LVC74ANS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC74ANS 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 SN74LVC74ANS?
For technical support, including SN74LVC74ANS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC74ANS requirements.
6.How does Aetrix verify that SN74LVC74ANS is sourced from the original manufacturer or authorized distributors?
All SN74LVC74ANS 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 SN74LVC74ANS meets industry standards.
7.What is the process for return or replacement of SN74LVC74ANS?
All SN74LVC74ANS units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC74ANS, 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 SN74LVC74ANS part is unused and in its original packaging.
Return procedure for SN74LVC74ANS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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