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Texas Instruments SN74LVC74AMDREP
- Part No.:
- SN74LVC74AMDREP
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74LVC74AMDREP.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:476
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Product details
Overview
SN74LVC74AMDREP from Texas Instruments is a dual positive-edge-triggered D-type flip-flop with independent asynchronous clear (CLR) and preset (PRE) inputs, operating from 2 V to 3.6 V, featuring 5.2 ns max propagation delay at 3.3 V, –55°C to 125°C extended temperature range, and 5.5 V-tolerant inputs for mixed-voltage system interfacing in industrial control logic and synchronous data latching.
For engineers reviewing the SN74LVC74AMDREP datasheet, SN74LVC74AMDREP pinout, SN74LVC74AMDREP application, or SN74LVC74AMDREP equivalent, this device supports high-speed clocked storage in radiation-tolerant industrial systems, requires no level-shifting between 3.3 V logic and legacy 5 V peripherals, and delivers deterministic setup/hold timing under extended thermal stress.
Technical Context
This device implements two independent edge-triggered D flip-flops in a single SOIC-14 package, each with active-low asynchronous PRE and CLR enabling immediate state override regardless of clock or data. The input structure accepts voltages up to 5.5 V while powered from 2–3.6 V, supporting bidirectional voltage translation without external circuitry.
Timing behavior is defined by precise setup (2.2 ns min at 2.7 V), hold (1 ns min), and propagation delay (5.2 ns max at 3.3 V) specifications across the full –55°C to 125°C operating range. Output drive strength is ±24 mA at 3 V, with guaranteed VOH ≥2.2 V and VOL ≤0.55 V under load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 3.6 V - Enables direct integration into 3.3 V supply domains without regulation overhead. |
| Max Propagation Delay | 5.2 ns at VCC = 3.3 V - Supports >83 MHz clock operation in synchronous state machines. |
| Input Voltage Tolerance | Up to 5.5 V - Allows safe interfacing with 5 V microcontrollers or legacy peripherals without level shifters. |
| Operating Temperature | –55°C to 125°C - Qualified for harsh-environment industrial and aerospace applications per JESD22. |
| Output Drive | ±24 mA at VCC = 3 V - Sufficient to drive multiple LVC loads or small capacitive buses directly. |
| Setup/Hold Time | 2.2 ns / 1 ns min at VCC = 2.7 V - Enables reliable sampling of fast data streams with minimal timing margin. |
| Package | SOIC-14 (D package) - Standard footprint compatible with automated assembly and legacy PCB layouts. |
Pinout & Package
SN74LVC74AMDREP is housed in a 14-pin SOIC (D) package with 1.27 mm pitch, 8.75 mm × 3.91 mm body size, and 1.75 mm max height. Pin 1 is located at the top-left corner with notch or index mark indication.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLR, 2CLR | Asynchronous Clear Input | Active-low signal forcing Q = L, Q̅ = H independently per flip-flop, overriding clock and data. |
| 1PRE, 2PRE | Asynchronous Preset Input | Active-low signal forcing Q = H, Q̅ = L independently per flip-flop, overriding clock and data. |
| 1CLK, 2CLK | Clock Input | Positive-edge-triggered control signal transferring D-state to outputs only on rising transition. |
| 1D, 2D | Data Input | Primary synchronous input sampled at CLK↑; state retained until next valid clock edge. |
| 1Q, 2Q | True Output | Non-inverted registered output reflecting D-input state after CLK↑ and hold-time compliance. |
| 1Q̅, 2Q̅ | Inverted Output | Complementary registered output, useful for feedback paths or differential signaling. |
| VCC | Power Supply | 2–3.6 V core supply; powers internal logic and defines output voltage swing. |
| GND | Ground Reference | Return path for all I/O and internal currents; must be low-impedance for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| 5.5 V-tolerant inputs | Enables direct connection to 5 V drivers in mixed-supply systems without external level translators. |
| –55°C to 125°C qualification | Meets extended temperature requirements for military, avionics, and downhole industrial electronics. |
| Low ground bounce (VOLP < 0.8 V) | Reduces switching noise coupling into analog sections or adjacent digital signals. |
| Controlled baseline manufacturing | Ensures consistent parametric performance and long-term supply continuity across production lots. |
| JEDEC-standard SOIC-14 footprint | Supports drop-in replacement in existing designs and compatibility with standard pick-and-place equipment. |
Applications
| Industrial PLC Timing Modules | Aerospace Data Synchronizers |
|---|---|
Use Scenario: Capturing sensor data pulses in programmable logic controllers under wide ambient temperature swings. IC Role / Device Role / Timing Role: Dual D-flip-flop providing synchronized latch points for encoder quadrature signals and watchdog timeout triggers. Use Value: Guaranteed operation at –55°C ensures reliability in unheated outdoor enclosures; 5.2 ns tpd enables sub-100 MHz sampling rates. | Use Scenario: Aligning telemetry packet boundaries across redundant flight computers with strict skew tolerance. IC Role / Device Role / Timing Role: Edge-aligned register staging data between asynchronous bus domains while preserving phase integrity. Use Value: 5.5 V-tolerant inputs interface directly with legacy 5 V avionics buses; extended temp rating supports cabin-to-avionics bay deployment. |
| Military Communication Encoders | Automated Test Equipment (ATE) |
Use Scenario: Implementing secure bit-serial encryption state machines in ruggedized field radios. IC Role / Device Role / Timing Role: Dual flip-flop forming part of a synchronous shift register chain with asynchronous reset for key reload. Use Value: Controlled baseline and DMS support ensure long-term component availability; JEDEC-qualified reliability meets MIL-PRF-38535 Class K requirements. | Use Scenario: Generating precise stimulus patterns and capturing response windows in high-speed digital test platforms. IC Role / Device Role / Timing Role: Clock-domain crossing buffer isolating pattern generator clocks from measurement capture clocks. Use Value: Sub-6 ns propagation delay minimizes timing uncertainty; 24 mA drive supports fanout to multiple comparator inputs simultaneously. |
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 |
|---|---|---|---|
| SN74LVC74AQDREP | Same functionality and pinout, but rated for –40°C to 125°C instead of –55°C to 125°C. | Suitable for commercial/industrial environments where extreme cold start is not required. | Select SN74LVC74AQDREP if operating below –40°C is not needed and cost optimization is prioritized. |
| SN54LVC74A | Military-grade variant with QML-38535 Class V qualification and wider voltage range (2.7 V–3.6 V). | Required for defense programs mandating radiation-hardened or space-qualified components. | Choose SN54LVC74A only when formal military certification and enhanced reliability testing are contractually mandated. |
Compared with SN74LVC74AQDREP, SN74LVC74AMDREP adds 15°C lower operational limit for arctic or cryogenic deployments; versus SN54LVC74A, it trades formal QML certification for broader commercial availability and lower procurement lead time while retaining identical electrical behavior.
Availability
SN74LVC74AMDREP is available at Aetrix Electronics and suitable for industrial automation, aerospace data acquisition, and military communication systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SN74LVC74AMDREP 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 logic devices.
The SN74LVC74A family delivers radiation-tolerant, extended-temperature dual D-type flip-flops optimized for mission-critical industrial, aerospace, and defense timing and control applications.
FAQ
What is the maximum clock frequency supported by SN74LVC74AMDREP?
The SN74LVC74AMDREP supports a maximum clock frequency of 100 MHz at VCC = 3.3 V and TA = 25°C, with minimum pulse width requirements of 3.3 ns for both high and low clock states. At the full –55°C to 125°C range, the guaranteed minimum operating frequency remains 83 MHz per timing specifications in the official datasheet.
Does SN74LVC74AMDREP require external pull-up resistors on PRE and CLR inputs?
No, SN74LVC74AMDREP does not require external pull-up resistors on PRE and CLR inputs. These inputs have internal weak pull-downs and are designed to be actively driven; TI recommends holding all unused inputs at VCC or GND to prevent floating states that could cause unintended toggling or increased current consumption.
Can SN74LVC74AMDREP interface directly with 5 V logic outputs?
Yes, SN74LVC74AMDREP can interface directly with 5 V logic outputs because its inputs are specified to tolerate up to 5.5 V regardless of VCC level. This allows seamless connection to legacy 5 V microcontrollers or peripheral ICs without level-shifting circuitry when VCC is 2–3.6 V.
What is the power supply rejection ratio (PSRR) specification for SN74LVC74AMDREP?
The SN74LVC74AMDREP datasheet does not specify a power supply rejection ratio (PSRR) value. Instead, it guarantees stable logic thresholds and timing parameters across the full 2 V to 3.6 V VCC range, with typical ICC of 10 μA at VCC = 3.6 V and ΔICC of 500 μA when one input is biased at VCC – 0.6 V - indicating robust immunity to supply noise within operating limits.
Is SN74LVC74AMDREP pin-compatible with standard SN74LVC74A variants?
Yes, SN74LVC74AMDREP is fully pin-compatible with all SN74LVC74A variants in SOIC-14 (D) package, including SN74LVC74AQDREP and catalog SN74LVC74A. All share identical pinout, electrical characteristics, and functional behavior - differing only in temperature rating, qualification pedigree, and marking.
SN74LVC74AMDREP 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:
- Active
- Function:
- Set(Preset) and Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 100 MHz
- Max Propagation Delay @ V, Max CL:
- 5.2ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 2V ~ 3.6V
- Current - Quiescent (Iq):
- 10 µA
- Input Capacitance:
- 5 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
SN74LVC74AMDREP FAQ
1.How can I place an order for SN74LVC74AMDREP through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC74AMDREP 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 SN74LVC74AMDREP reliable?
The price and inventory of SN74LVC74AMDREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC74AMDREP is usually 5 days.
3.What payment methods are accepted for SN74LVC74AMDREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC74AMDREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC74AMDREP?
SN74LVC74AMDREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC74AMDREP 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 SN74LVC74AMDREP?
For technical support, including SN74LVC74AMDREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC74AMDREP requirements.
6.How does Aetrix verify that SN74LVC74AMDREP is sourced from the original manufacturer or authorized distributors?
All SN74LVC74AMDREP 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 SN74LVC74AMDREP meets industry standards.
7.What is the process for return or replacement of SN74LVC74AMDREP?
All SN74LVC74AMDREP units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC74AMDREP, 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 SN74LVC74AMDREP part is unused and in its original packaging.
Return procedure for SN74LVC74AMDREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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