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Texas Instruments SN74LVC74APWTG4
- Part No.:
- SN74LVC74APWTG4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVC74APWTG4.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,825
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Product details
Overview
SN74LVC74APWTG4 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 industrial control logic and clock-domain translation circuits.
For engineers reviewing the SN74LVC74APWTG4 datasheet, SN74LVC74APWTG4 pinout, SN74LVC74APWTG4 application, or SN74LVC74APWTG4 equivalent, this device serves as a low-voltage, high-speed storage element in synchronous digital systems requiring precise edge-triggered state capture, dual-channel data latching, and robust ESD immunity (±2000 V HBM).
Technical Context
The SN74LVC74APWTG4 implements two independent CMOS D flip-flops, each with asynchronous active-low preset (PRE) and clear (CLR) controls that override clock and data inputs. Its positive-edge clock triggering is voltage-level–sensitive-not dependent on input slew rate-enabling reliable operation across varying signal rise times.
It supports down-translation via 5.5 V-tolerant I/Os while powered from as low as 1.65 V, and features balanced push-pull outputs with ±24 mA drive capability at 3.0 V, enabling direct interface with legacy 5 V logic without level shifters in many applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 3.6 V - Enables single-supply operation in modern low-power 1.8 V/2.5 V/3.3 V systems. |
| Input Voltage Tolerance | Up to 5.5 V - Allows safe interfacing with higher-voltage controllers without external protection. |
| Max Propagation Delay | 5.2 ns at VCC = 3.3 V - Supports >100 MHz clock frequencies in timing-critical synchronous logic paths. |
| Output Drive Strength | ±24 mA at VCC = 3.0 V - Sufficient to drive multiple LVC loads or moderate capacitive bus lines directly. |
| ESD Rating (HBM) | ±2000 V - Meets industrial-grade robustness requirements per JESD22-A114. |
| Operating Temperature | –40°C to +125°C - Qualified for extended-temperature industrial and automotive under-hood environments. |
| Logic Family | LVC (Low-Voltage CMOS) - Ensures compatibility with TI's broad LVC portfolio and predictable noise margins. |
Pinout & Package
TSSOP-14 (PW) package: 5.0 mm × 6.4 mm body, 0.65 mm pitch, exposed pad not present, RoHS-compliant NiPdAu finish, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLK, 2CLK | Positive-edge clock input | Triggers synchronous data transfer on rising edge; voltage-level–triggered, insensitive to slow edges. |
| 1D, 2D | Data input | Samples and holds value at CLK↑ if PRE/CLR inactive; requires ≥2.0 ns setup time at 3.3 V. |
| 1PRE, 2PRE | Asynchronous preset (active-low) | Forces Q = HIGH regardless of CLK/D; overrides all synchronous functions when asserted. |
| 1CLR, 2CLR | Asynchronous clear (active-low) | Forces Q = LOW regardless of CLK/D; provides hardware reset independent of clock domain. |
| 1Q, 2Q | True output | CMOS-compatible push-pull output; drives up to 24 mA sink/source at 3.0 V. |
| 1Q, 2Q | Inverted output | Complementary to true output; enables direct implementation of toggle or divide-by-two functions. |
| VCC | Power supply | Single 1.65–3.6 V rail; bypassing with 0.1 µF capacitor near pin required for stable switching. |
| GND | Ground reference | Common return path for all I/O and internal logic; must be low-impedance for noise control. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range (1.65 V–3.6 V) | Enables interoperability across 1.8 V, 2.5 V, and 3.3 V subsystems without voltage translators. |
| 5.5 V-tolerant inputs | Permits direct connection to 5 V microcontrollers or FPGAs while powered from lower VCC. |
| Low propagation delay (5.2 ns) | Supports high-speed clock division, state machine sequencing, and pipeline register stages. |
| Asynchronous PRE/CLR per channel | Allows independent initialization or forced reset of each flip-flop without affecting the other. |
| High ESD immunity (2000 V HBM) | Reduces risk of field failure during handling or in electrically noisy industrial environments. |
| Low power consumption (10 µA ICC) | Minimizes quiescent current in battery-backed or always-on control logic applications. |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Latching sensor status (door open/closed, seatbelt fastened) in real-time safety-critical monitoring loops. IC Role / Device Role / Timing Role: Dual-channel synchronous register capturing parallel status bits on vehicle bus clock edges. Use Value: Independent PRE/CLR allows immediate fault recovery without halting main control loop execution. |
Use Scenario: Debouncing switch inputs (headlight toggle, window up/down) in distributed ECUs. IC Role / Device Role / Timing Role: Edge-triggered storage element converting noisy mechanical signals into clean digital states. Use Value: 5.5 V-tolerant inputs interface directly with 5 V pull-up switches; no external clamping needed. |
| Medical Infusion Pump Controller | Test Equipment Pattern Generator |
Use Scenario: Capturing and holding motor step enable commands synchronized to safety watchdog timer pulses. IC Role / Device Role / Timing Role: Dual DFF providing fail-safe command staging with hardware reset on timeout detection. Use Value: –40°C to +125°C rating ensures reliability in sterilized or ambient-temperature-variable enclosures. |
Use Scenario: Generating precise 2×, 4×, or 8× frequency-divided test clocks from a master oscillator. IC Role / Device Role / Timing Role: Cascaded DFF configured as toggle flip-flop (Q→D feedback) for exact integer division. Use Value: 5.2 ns tpd enables stable division up to 100 MHz input clock with minimal jitter accumulation. |
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 |
|---|---|---|---|
| SN74LVC74ADBR | TSSOP-14 replaced by SSOP-14 (DB); same electrical specs, but 6.2 mm × 7.8 mm footprint and 0.635 mm pitch. | Requires PCB layout change; better thermal resistance (RθJA = 140.4°C/W vs. 150.8°C/W) but larger area. | Select when board space permits larger package and improved heat dissipation is prioritized over miniaturization. |
| 74LVC74APW,118 | NXP variant in identical TSSOP-14 (PW) package; same VCC range and timing, but HBM ESD rated at ±4000 V (JESD22-A114). | Higher ESD margin suits high-handling-volume manufacturing or unshielded lab environments. | Choose when enhanced electrostatic robustness is required beyond TI's ±2000 V spec, with no layout impact. |
Compared with SN74LVC74APWTG4, SN74LVC74ADBR demands PCB redesign due to different pin pitch and body size, while 74LVC74APW,118 offers superior ESD resilience in the same footprint-making it preferable for production lines with elevated static risk.
Availability
SN74LVC74APWTG4 is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, medical device control, and test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SN74LVC74APWTG4 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 experience in high-reliability industrial and automotive IC design.
The SN74LVC74APWTG4 belongs to TI's LVC logic family, engineered for low-voltage operation, mixed-signal interfacing, and robust performance in harsh electromagnetic and thermal environments.
FAQ
What is the maximum clock frequency supported by SN74LVC74APWTG4 at 3.3 V?
The SN74LVC74APWTG4 supports a maximum clock frequency of 100 MHz at VCC = 3.3 V ± 0.3 V and TA = –40°C to +125°C. At the extended temperature range of –40°C to +85°C, it achieves up to 150 MHz under the same conditions. These values are confirmed in Section 5.8 of the official TI datasheet SCAS287W.
Does SN74LVC74APWTG4 require external pull-up resistors on PRE and CLR pins?
No, SN74LVC74APWTG4 does not require external pull-ups on PRE or CLR pins. These inputs are internally weakly pulled high; however, TI recommends actively driving them to defined logic levels (VCC or GND) in production designs to prevent floating states and ensure deterministic behavior per Application Report SCBA004.
Can SN74LVC74APWTG4 safely interface with 5 V logic outputs?
Yes, SN74LVC74APWTG4 inputs are rated for up to 5.5 V regardless of VCC level, enabling direct connection to 5 V CMOS or TTL outputs without level-shifting circuitry. This is explicitly specified in Section 5.3 (Recommended Operating Conditions) and validated by the "Inputs accept voltages to 5.5 V" feature.
What is the thermal resistance (RθJA) of SN74LVC74APWTG4 in its TSSOP-14 package?
The junction-to-ambient thermal resistance (RθJA) for SN74LVC74APWTG4 in the PW (TSSOP-14) package is 150.8°C/W, as published in Section 5.4 of the TI datasheet SCAS287W. This value assumes standard JEDEC 2-layer board conditions and guides thermal design for continuous operation at full load.
How does the dual-channel architecture of SN74LVC74APWTG4 improve system-level reliability?
The SN74LVC74APWTG4 integrates two functionally independent D flip-flops with separate PRE, CLR, CLK, and D inputs-allowing one channel to be reset or reinitialized without disturbing the state of the other. This isolation prevents cascaded failures in safety-critical applications such as medical pump control or industrial motion sequencing, where concurrent but decoupled state management is essential.
SN74LVC74APWTG4 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:
- Discontinued at Digi-Key
- 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-TSSOP
SN74LVC74APWTG4 FAQ
1.How can I place an order for SN74LVC74APWTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC74APWTG4 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 SN74LVC74APWTG4 reliable?
The price and inventory of SN74LVC74APWTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC74APWTG4 is usually 5 days.
3.What payment methods are accepted for SN74LVC74APWTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC74APWTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC74APWTG4?
SN74LVC74APWTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC74APWTG4 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 SN74LVC74APWTG4?
For technical support, including SN74LVC74APWTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC74APWTG4 requirements.
6.How does Aetrix verify that SN74LVC74APWTG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC74APWTG4 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 SN74LVC74APWTG4 meets industry standards.
7.What is the process for return or replacement of SN74LVC74APWTG4?
All SN74LVC74APWTG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC74APWTG4, 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 SN74LVC74APWTG4 part is unused and in its original packaging.
Return procedure for SN74LVC74APWTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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