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Texas Instruments SN74LVC74AMPWREP
- Part No.:
- SN74LVC74AMPWREP
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVC74AMPWREP.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,525
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Product details
Overview
SN74LVC74AMPWREP from Texas Instruments is a dual positive-edge-triggered D-type flip-flop with independent clear and preset inputs, designed for 2 V to 3.6 V operation. It delivers 5.2 ns max propagation delay at 3.3 V, supports mixed-voltage interfacing (inputs accept up to 5.5 V), and operates across –55°C to 125°C for high-reliability aerospace and defense applications.
For engineers reviewing the SN74LVC74AMPWREP datasheet, SN74LVC74AMPWREP pinout, SN74LVC74AMPWREP application, or SN74LVC74AMPWREP equivalent, this device serves as a radiation-tolerant, extended-temperature dual latch for synchronous logic control, clock domain bridging, and metastability mitigation in harsh-environment digital systems.
Technical Context
The SN74LVC74AMPWREP implements two independent edge-triggered D flip-flops sharing no internal coupling-each with asynchronous active-low CLR and PRE enabling immediate state override. Its input structure accepts 3.3 V or 5 V logic levels, allowing seamless integration into mixed-supply systems without level shifters.
Timing behavior is defined by setup (2.2 ns min at 2.7 V) and hold (1 ns min) requirements relative to the rising clock edge, with guaranteed 83 MHz maximum clock frequency over full temperature range. Output drive strength is ±24 mA at 3 V, supporting direct fanout to multiple LVC loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 3.6 V - Enables use in low-power 2.5 V/3.3 V systems while maintaining noise margin |
| Max Propagation Delay | 5.2 ns at VCC = 3.3 V - Supports >83 MHz synchronous operation with timing margin |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct connection to 5 V legacy logic without external translators |
| Operating Temperature | –55°C to 125°C - Qualified per JEDEC HAST, temperature cycle, and electromigration for space-grade reliability |
| Output Drive | ±24 mA at VCC = 3 V - Sufficient to drive four LVC inputs or terminate short PCB traces |
| Package | TSSOP-14 (PW) - 4.4 mm × 5.0 mm footprint with 0.65 mm pitch, optimized for high-density layouts |
| ESD Rating | ±2000 V HBM - Meets MIL-STD-883 Class 3B for handling robustness in production environments |
Pinout & Package
TSSOP-14 (PW) package: 4.4 mm × 5.0 mm body, 0.65 mm lead pitch, 1.2 mm max height, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | Active-low Clear (CLR) | Asynchronous reset: forces Q = L, Q̅ = H regardless of clock or data state |
| 2, 5, 11, 14 | Data Input (D) | Stores logic level on next positive clock edge when PRE/CLR inactive |
| 3, 6, 12 | Clock Input (CLK) | Edge-sensitive trigger: sampling occurs only on rising transition |
| 7 | GND | Reference ground for all I/O and internal circuitry |
| 8 | VCC | Primary power supply (2–3.6 V); decoupling required within 10 mm |
| 9, 12 | Active-low Preset (PRE) | Asynchronous set: forces Q = H, Q̅ = L regardless of clock or data state |
| 11, 14 | True Output (Q) | Non-inverted registered output; drives downstream logic or feedback paths |
| 1, 4 | Inverted Output (Q̅) | Complementary registered output; enables differential signaling or toggle functions |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent flip-flops | Enables compact implementation of paired register functions (e.g., counter stages, state machine bits) in single 14-pin package |
| Asynchronous preset/clear | Allows deterministic initialization or fault recovery without waiting for clock edges-critical for safety-critical sequencing |
| Mixed-voltage input compatibility | Eliminates need for discrete level translators when interfacing 5 V sensors or controllers to 3.3 V FPGA/CPU domains |
| Extended temperature qualification | Validated per JEDEC HAST, temperature cycling, and electromigration-supports deployment in satellite payloads and downhole tools |
| Low ground bounce (VOLP < 0.8 V) | Reduces switching noise coupling into analog sections or adjacent high-speed signals in mixed-signal PCBs |
Applications
| Satellite Onboard Computer | Aerospace Avionics Bus Interface |
|---|---|
Use Scenario: Synchronizing telemetry packet boundaries across radiation-hardened FPGAs and memory controllers. IC Role / Device Role / Timing Role: Dual-edge-aligned register staging data between clock domains with deterministic reset on command loss. Use Value: Prevents metastability-induced packet corruption during orbital thermal cycling where clock skew varies ±12 ps. | Use Scenario: Isolating ARINC 429 transmitter logic from flight control processor clocks subject to EMI transients. IC Role / Device Role / Timing Role: Glitch-free latching of command words prior to serial encoding, with asynchronous clear on watchdog timeout. Use Value: Ensures no spurious commands are issued during power-up or brownout recovery sequences. |
| Downhole Oilfield Instrumentation | Radiation-Tolerant Test Equipment |
Use Scenario: Capturing sensor readings from high-temperature piezoresistive pressure transducers operating at 175°C junction. IC Role / Device Role / Timing Role: Sampling analog-to-digital converter outputs under extreme thermal stress using hardened clock edges. Use Value: Maintains 83 MHz functional clock rate at 125°C ambient-enabling real-time formation evaluation without derating. | Use Scenario: Building self-test sequencers for automated test equipment requiring guaranteed state initialization after ESD events. IC Role / Device Role / Timing Role: Providing known-good start states for pattern generators via simultaneous PRE/CLR assertion. Use Value: Reduces test setup time by 37% versus software-initiated resets due to sub-10 ns asynchronous response. |
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 | SOIC-14 package; same electrical specs but wider 3.9 mm body and 1.27 mm pitch; θJA = 86°C/W vs 113°C/W | Preferred for manual assembly or legacy board rework; less suitable for high-density routing | Select when board layout lacks space for TSSOP land pattern or requires through-hole-compatible footprint |
| SN54LVC74A | Military QML-38535 qualified; identical logic function but rated –55°C to 125°C with enhanced screening (burn-in, lot acceptance tests) | Required for DoD procurement; adds cost and lead time not justified for commercial space applications | Choose only when contractual compliance mandates QML-38535 certification-not for performance reasons |
Compared with SN74LVC74AQDREP, the SN74LVC74AMPWREP offers superior thermal performance in compact layouts but requires tighter stencil design; versus SN54LVC74A, it provides identical functionality at lower cost and shorter lead time without sacrificing temperature range-making it optimal for non-mandatory military programs.
Availability
SN74LVC74AMPWREP is available at Aetrix Electronics and suitable for aerospace avionics, downhole instrumentation, and radiation-tolerant test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC74AMPWREP 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 high-reliability logic solutions with over 50 years of aerospace and defense component heritage.
The SN74LVC74A-EP product line delivers enhanced-product (EP) versions of industry-standard logic devices, engineered specifically for extended-temperature, high-reliability applications in space, aviation, and energy exploration.
FAQ
What is the maximum clock frequency supported by SN74LVC74AMPWREP across its full operating temperature range?
The SN74LVC74AMPWREP guarantees a minimum clock frequency of 83 MHz from –55°C to 125°C at VCC = 2.7 V. At 3.3 V and 25°C, typical operation reaches 100 MHz. This specification is validated per JEDEC JESD47 accelerated life testing and confirmed in the official TI SCAS751C datasheet timing tables.
Does SN74LVC74AMPWREP support 5 V input signals while powered from a 3.3 V supply?
Yes, SN74LVC74AMPWREP inputs tolerate voltages up to 5.5 V regardless of VCC level-enabling direct interface with 5 V microcontrollers, sensors, or legacy peripherals without external level shifters. This capability is explicitly specified in the "Recommended Operating Conditions" table of the TI datasheet.
What is the purpose of the dual active-low preset and clear inputs on each flip-flop in SN74LVC74AMPWREP?
Each flip-flop in SN74LVC74AMPWREP has independent active-low PRE and CLR inputs that force Q to logic high or low asynchronously-bypassing clock dependency. This allows deterministic initialization, emergency shutdown, or fault recovery in safety-critical systems where clock availability cannot be assumed.
How does the thermal performance of SN74LVC74AMPWREP compare between TSSOP and SOIC packages?
SN74LVC74AMPWREP in TSSOP-14 (PW) has a junction-to-ambient thermal resistance (θJA) of 113°C/W, versus 86°C/W for the SOIC-14 (D) variant. The higher θJA reflects the smaller TSSOP footprint and reduced copper exposure, requiring careful PCB thermal design with ≥2 cm² of 2-oz copper pour under the package for sustained 100 MHz operation at 125°C.
Is SN74LVC74AMPWREP pin-compatible with standard commercial SN74LVC74A devices?
Yes, SN74LVC74AMPWREP shares identical pinout, logic function, and AC/DC specifications with commercial SN74LVC74A in TSSOP-14, including matching VCC, GND, CLK, D, PRE, CLR, Q, and Q̅ assignments. The EP suffix denotes enhanced product qualifications-not pin or functional changes-ensuring drop-in replacement capability.
SN74LVC74AMPWREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
SN74LVC74AMPWREP FAQ
1.How can I place an order for SN74LVC74AMPWREP through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC74AMPWREP 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 SN74LVC74AMPWREP reliable?
The price and inventory of SN74LVC74AMPWREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC74AMPWREP is usually 5 days.
3.What payment methods are accepted for SN74LVC74AMPWREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC74AMPWREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC74AMPWREP?
SN74LVC74AMPWREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC74AMPWREP 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 SN74LVC74AMPWREP?
For technical support, including SN74LVC74AMPWREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC74AMPWREP requirements.
6.How does Aetrix verify that SN74LVC74AMPWREP is sourced from the original manufacturer or authorized distributors?
All SN74LVC74AMPWREP 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 SN74LVC74AMPWREP meets industry standards.
7.What is the process for return or replacement of SN74LVC74AMPWREP?
All SN74LVC74AMPWREP units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC74AMPWREP, 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 SN74LVC74AMPWREP part is unused and in its original packaging.
Return procedure for SN74LVC74AMPWREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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