My Inquiry
My Account
Texas Instruments SN74LVC74ADG4
- Part No.:
- SN74LVC74ADG4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74LVC74ADG4.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,905
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVC74ADG4 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 SN74LVC74ADG4 datasheet, SN74LVC74ADG4 pinout, SN74LVC74ADG4 application, or SN74LVC74ADG4 equivalent, this device serves as a low-voltage, high-speed storage element in clock-synchronized state machines, frequency dividers, and data latching paths where rail-to-rail input tolerance and guaranteed setup/hold timing are critical.
Technical Context
The SN74LVC74ADG4 implements two independent CMOS D flip-flops, each with asynchronous active-low preset (PRE) and clear (CLR) inputs that override clocked data transfer. Its edge-triggered operation responds to the positive-going transition of CLK, with triggering defined by voltage threshold-not edge rate-enabling robust timing across varying slew conditions.
Input overvoltage tolerance up to 5.5 V allows safe interfacing with higher-voltage logic families without level shifters, while its 1.65 V minimum VCC supports integration into modern ultra-low-power systems. The device is characterized for operation from –40°C to 125°C and meets JESD 17 latch-up (>250 mA) and JESD 22 ESD standards (2000 V HBM, 1000 V CDM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - enables direct use in 1.8 V and 2.5 V systems without regulators or level translation. |
| tpd (max) | 5.2 ns at VCC = 3.3 V - supports >100 MHz clock frequencies in synchronous logic paths. |
| Input Voltage Tolerance | Up to 5.5 V - permits reliable interfacing with legacy 5 V logic without external protection or translation. |
| Setup Time (tsu) | 3.0 ns at VCC = 3.3 V - defines minimum data stability window before CLK edge for reliable capture. |
| Hold Time (th) | 1 ns - ensures data integrity immediately after CLK edge, simplifying timing closure in dense layouts. |
| Output Drive | ±24 mA at VCC = 3 V - drives moderate capacitive loads and multiple CMOS inputs without buffering. |
| Operating Temperature | –40°C to 125°C - qualified for industrial and automotive under-hood applications requiring extended thermal range. |
Pinout & Package
SN74LVC74ADG4 is packaged in a 14-pin SOIC (D) package with 8.65 mm × 6.00 mm body size and standard 1.27 mm lead pitch. The package features gull-wing leads suitable for automated surface-mount assembly and reflow soldering per IPC-J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLK, 2CLK | Clock input (positive-edge sensitive) | Triggers synchronous data transfer on rising edge; threshold-based triggering decouples timing from input slew rate. |
| 1D, 2D | Data input | Samples and transfers logic state to Q outputs only when PRE and CLR are high and setup/hold timing is met. |
| 1PRE, 2PRE | Asynchronous preset (active-low) | Forces corresponding Q output high regardless of clock or data; overrides all synchronous functions. |
| 1CLR, 2CLR | Asynchronous clear (active-low) | Forces corresponding Q output low regardless of clock or data; provides hardware reset capability. |
| 1Q, 2Q | True output | Reflects stored D value after CLK edge (when PRE/CLR inactive); drives downstream logic or feedback paths. |
| 1Q, 2Q | Inverted output | Complementary to Q; enables direct implementation of toggle or differential signaling without external inverters. |
| VCC | Power supply | Single 1.65–3.6 V supply powers both flip-flops and I/O buffers; bypass capacitor required at pin. |
| GND | Ground reference | Common return path for all internal circuitry and I/O; must be low-impedance and well-decoupled. |
Key Features
| Feature | Design Value |
|---|---|
| 1.65 V to 3.6 V operation | Supports direct integration into 1.8 V and 2.5 V domains without voltage translation, reducing BOM count and layout complexity. |
| 5.5 V-tolerant inputs | Enables interoperability with 3.3 V and 5 V logic families on shared buses or mixed-supply boards without external clamping. |
| 5.2 ns max tpd at 3.3 V | Allows use in high-speed digital control loops and clock division circuits up to 100 MHz with margin. |
| Asynchronous PRE/CLR | Provides deterministic initialization and fault recovery independent of clock timing-critical for safety-critical state machines. |
| JESD 22 ESD rating | 2000 V HBM and 1000 V CDM ensure robust handling during manufacturing and field deployment in noisy environments. |
Applications
| Industrial PLC Control Logic | Automotive Body Control Module |
|---|---|
|
Use Scenario: Synchronizing sensor sampling and actuator enable signals across distributed I/O modules in programmable logic controllers. IC Role / Device Role / Timing Role: Dual D flip-flop stores and aligns asynchronous input states to system clock domain, enabling deterministic scan-cycle execution. Use Value: Guarantees setup/hold compliance and eliminates metastability in multi-clock-domain interfaces at 1.8 V supply. |
Use Scenario: Implementing debounce logic and mode sequencing for door lock/unlock commands in vehicle body control units. IC Role / Device Role / Timing Role: Stores user command state and generates synchronized enable pulses for motor drivers using PRE/CLR for fail-safe reset. Use Value: Leverages 5.5 V-tolerant inputs to interface directly with 5 V switch matrices while operating from 3.3 V MCU rail. |
| Medical Imaging Data Capture | Test Equipment Digital Pattern Generator |
|
Use Scenario: Capturing and holding pixel clock-aligned trigger events from analog front-end ADCs in portable ultrasound devices. IC Role / Device Role / Timing Role: Latches acquisition start signals with precise edge alignment to minimize jitter-induced timing uncertainty in time-of-flight measurements. Use Value: Achieves 5.2 ns propagation delay and <1 ns output skew to maintain sub-nanosecond timing fidelity across dual channels. |
Use Scenario: Generating stable, divided clock signals and controlled test pattern sequences in automated boundary-scan testers. IC Role / Device Role / Timing Role: Configured as toggle flip-flop (Q→D feedback) to produce exact ½-frequency outputs with minimal added jitter. Use Value: Delivers 100 MHz maximum clock frequency and low ground bounce (<0.8 V) to preserve signal integrity in high-speed digital stimulus paths. |
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 |
|---|---|---|---|
| SN74LVC74ADR | Same logic function and electrical specs; packaged in 14-pin SOIC but with tape-and-reel (2500 pcs) instead of tube (50 pcs) packaging. | No functional difference; identical pinout and timing; selected for high-volume automated assembly. | Choose SN74LVC74ADR for production runs requiring reel-fed pick-and-place; SN74LVC74ADG4 remains optimal for prototyping and low-volume builds. |
| 74LVC74A (Nexperia) | Functionally compatible but rated only to 125°C (not –40°C to 125°C), with slightly higher typical tpd (5.5 ns vs. 5.2 ns at 3.3 V). | Limited suitability in extended-temperature industrial or automotive applications due to narrower temp range and looser timing. | Select SN74LVC74ADG4 where full –40°C to 125°C operation and guaranteed 5.2 ns tpd are required; use 74LVC74A only for commercial-temp cost-sensitive designs. |
Compared with SN74LVC74ADR and 74LVC74A, the SN74LVC74ADG4 offers verified tube packaging for lab use, guaranteed industrial temperature performance, and the tightest published propagation delay specification-making it the preferred choice for timing-critical validation and small-batch deployment.
Availability
SN74LVC74ADG4 is available at Aetrix Electronics and suitable for industrial PLC control logic, automotive body control modules, medical imaging data capture, and test equipment digital pattern generation requiring stable component supply and long-term manufacturability.
Supply support for SN74LVC74ADG4 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 expertise in high-reliability logic families and industrial-grade qualification.
The SN74LVC74ADG4 belongs to TI's LVC (Low-Voltage CMOS) logic family, designed specifically for low-power, high-speed digital interfacing in mixed-voltage systems spanning industrial automation, automotive electronics, and medical instrumentation.
FAQ
What is the maximum clock frequency supported by the SN74LVC74ADG4?
The SN74LVC74ADG4 supports a maximum clock frequency of 100 MHz at VCC = 3.3 V and TA = –40°C to 85°C, and 83 MHz at VCC = 2.7 V across its full –40°C to 125°C operating range. These values are validated per TI's switching characteristics tables and assume proper load and layout conditions.
Does the SN74LVC74ADG4 require external pull-up or pull-down resistors on unused inputs?
Yes-the SN74LVC74ADG4 requires all unused inputs (including PRE, CLR, D, and CLK) to be tied to VCC or GND to prevent floating nodes, which can cause increased ICC, erratic outputs, or ESD susceptibility. TI explicitly recommends this in Section 5.3 and Figure 8-4 of the datasheet.
Can the SN74LVC74ADG4 interface directly with 5 V logic outputs?
Yes-the SN74LVC74ADG4 inputs are rated for 5.5 V, allowing direct connection to 5 V logic outputs without level shifters or clamping diodes. This overvoltage tolerance is specified in Section 5.1 Absolute Maximum Ratings and confirmed in Section 7.1 Overview.
What is the purpose of the inverted outputs (1Q and 2Q) on the SN74LVC74ADG4?
The inverted outputs (1Q and 2Q) provide complementary logic states to their respective true outputs (1Q and 2Q), enabling immediate implementation of toggle configurations, differential signaling, or NAND/NOR-based feedback without external inverters-reducing component count and propagation delay in sequential logic designs.
Is the SN74LVC74ADG4 RoHS compliant and lead-free?
Yes-the SN74LVC74ADG4 is RoHS compliant and features lead-free (Pb-free) terminations with NiPdAu plating, as documented in TI's Packaging Information addendum and confirmed by its "Yes" RoHS status and Level-1 MSL rating in the orderable part number table.
SN74LVC74ADG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
SN74LVC74ADG4 FAQ
1.How can I place an order for SN74LVC74ADG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC74ADG4 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 SN74LVC74ADG4 reliable?
The price and inventory of SN74LVC74ADG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC74ADG4 is usually 5 days.
3.What payment methods are accepted for SN74LVC74ADG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC74ADG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC74ADG4?
SN74LVC74ADG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC74ADG4 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 SN74LVC74ADG4?
For technical support, including SN74LVC74ADG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC74ADG4 requirements.
6.How does Aetrix verify that SN74LVC74ADG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC74ADG4 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 SN74LVC74ADG4 meets industry standards.
7.What is the process for return or replacement of SN74LVC74ADG4?
All SN74LVC74ADG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC74ADG4, 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 SN74LVC74ADG4 part is unused and in its original packaging.
Return procedure for SN74LVC74ADG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVC74ADG4 Tags
-
SN74HC74DR
Texas Instruments
-
SN74HC74PWR
Texas Instruments
-
74LVC1G74GT,115
Nexperia USA Inc.
-
SN74LVC2G74DCUR
Texas Instruments
-
CD4013BM96
Texas Instruments
-
SN74HCT273PWR
Texas Instruments
-
SN74LVC1G74DCUR
Texas Instruments
-
SN74HC574DWR
Texas Instruments
-
74LVC1G74DC,125
Nexperia USA Inc.
-
SN74HC273DWR
Texas Instruments
-
SN74HCT574DWR
Texas Instruments
-
SN74LVC1G74DCTR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
