My Inquiry
My Account
Texas Instruments SN74LVC74ADRE4
- Part No.:
- SN74LVC74ADRE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74LVC74ADRE4.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,662
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVC74ADRE4 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 propagation delay at 3.3 V, and rated for –40°C to 125°C industrial temperature range - used in clock domain synchronization and data latching in digital control logic.
For engineers reviewing the SN74LVC74ADRE4 datasheet, SN74LVC74ADRE4 pinout, SN74LVC74ADRE4 application, or SN74LVC74ADRE4 equivalent, key selection criteria include its dual-channel edge-triggered storage function, 14-pin SOIC (D) package, overvoltage-tolerant I/Os, low-voltage operation down to 1.65 V, and guaranteed timing performance across extended temperature.
Technical Context
The SN74LVC74ADRE4 implements two independent CMOS D flip-flops, each with asynchronous active-low preset (PRE) and clear (CLR) inputs that override clock and data states. Its positive-edge clock triggering occurs at a defined voltage threshold, not dependent on input slew rate.
Each flip-flop supports simultaneous Q and Q̅ outputs, enabling direct implementation of toggle-mode frequency division (÷2), synchronous state holding, and bus interface control - all while maintaining rail-to-rail output swing and robust noise immunity via hysteresis-free TTL-compatible thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.65 V to 3.6 V - enables direct interfacing with 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. |
| Input Voltage Tolerance | Up to 5.5 V - allows safe connection to higher-voltage buses or legacy 5 V signals without external protection. |
| Max Propagation Delay | 5.2 ns at VCC = 3.3 V - supports reliable operation up to 100 MHz clock frequency in high-speed digital control paths. |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive, industrial motor drives, and telecom infrastructure applications. |
| Output Drive Strength | ±24 mA at VCC = 3 V - sufficient to drive multiple LVC loads or moderate PCB trace capacitance without buffering. |
| ESD Rating | ±2000 V HBM - meets JEDEC JESD22-A114A for robust handling in automated assembly and field environments. |
Pinout & Package
The SN74LVC74ADRE4 is supplied in a 14-pin SOIC (D) package measuring 8.65 mm × 6.00 mm (body size 8.65 mm × 3.91 mm), with standard 1.27 mm pitch and gull-wing leads compatible with IPC-7351B footprint IPC7351SOIC14_865X600_P127.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLK, 2CLK | Positive-edge clock input | Triggers synchronous data capture on rising edge; threshold-based triggering ensures consistent timing regardless of input slew rate. |
| 1D, 2D | Data input | Samples and transfers to Q/Q̅ outputs only when PRE and CLR are high and setup/hold times met relative to CLK↑. |
| 1PRE, 2PRE | Asynchronous preset input | Active-low: forces Q = HIGH, Q̅ = LOW immediately, overriding clock and data - used for known initial state assertion. |
| 1CLR, 2CLR | Asynchronous clear input | Active-low: forces Q = LOW, Q̅ = HIGH immediately - essential for reset-on-power-up or fault recovery sequences. |
| 1Q, 2Q | True output | Reflects stored D value after CLK↑; complementary to Q̅; capable of sourcing/sinking ±24 mA at 3 V. |
| 1Q̅, 2Q̅ | Inverted output | Logic complement of Q; enables direct implementation of toggle dividers or differential signaling without external inverters. |
| VCC | Power supply | Single 1.65–3.6 V rail; requires local 0.1 µF ceramic bypass capacitor placed adjacent to pin for stable switching noise suppression. |
| GND | Ground reference | Common return path for all I/O and internal logic; must be connected to low-impedance system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent D flip-flops | Enables compact implementation of two synchronized storage elements in one IC - reduces board area vs discrete solutions. |
| Asynchronous PRE/CLR per channel | Allows deterministic initialization or forced reset without waiting for clock edges - critical for safety-critical startup and error recovery. |
| 5.5 V tolerant inputs | Eliminates need for external level translators when interfacing with mixed-voltage systems (e.g., 5 V sensors into 3.3 V FPGA logic). |
| Guaranteed timing at 125°C | Ensures functional correctness in high-temperature environments like industrial PLCs or automotive engine control units without derating. |
| Low dynamic power consumption | Typical ICC = 10 µA at VCC = 3.6 V - supports battery-backed or energy-constrained embedded control applications. |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
Use Scenario: Synchronizing encoder quadrature signals and generating direction-controlled PWM enable pulses in BLDC motor drivers. IC Role / Device Role / Timing Role: Dual flip-flop latches position data on rising clock edges while PRE/CLR manage fault-induced reset conditions. Use Value: Enables precise phase-aligned sampling and deterministic state recovery during voltage transients or EMI events. | Use Scenario: Managing window lift/lower sequencing and mirror fold/unfold logic in door control modules. IC Role / Device Role / Timing Role: Stores user command states and synchronizes them to microcontroller clock domain using edge-triggered capture. Use Value: Prevents spurious actuation due to switch bounce or CAN bus latency by enforcing clean, clock-synchronized state transitions. |
| Telecom Line Card Timing | Test Equipment Digital Pattern Generation |
Use Scenario: Dividing high-frequency reference clocks (e.g., 100 MHz) to generate lower-rate frame sync signals for SerDes PHY interfaces. IC Role / Device Role / Timing Role: Configured as a ÷2 frequency divider via Q→D feedback; leverages guaranteed tpd ≤5.2 ns for jitter-controlled output. Use Value: Delivers sub-nanosecond skew between divided outputs, meeting SONET/SDH jitter budget requirements without PLL complexity. | Use Scenario: Generating precise, repeatable stimulus waveforms (e.g., burst patterns, strobe sequences) in ATE digital I/O subsystems. IC Role / Device Role / Timing Role: Holds pattern bits in parallel registers and releases them synchronously on test clock edges for deterministic timing alignment. Use Value: Ensures <1 ns inter-channel skew across multiple DUT pins - critical for high-speed digital validation at 100+ Mbps rates. |
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 |
|---|---|---|---|
| SN74LVC74APWRE4 | TSSOP-14 package (5.0 mm × 6.4 mm); identical electrical specs and timing; slightly higher RθJA (150.8°C/W vs 127.8°C/W). | Better suited for space-constrained PCBs where SOIC footprint is prohibitive; thermal performance marginally reduced. | Select when board area is constrained and thermal headroom remains sufficient for ambient + power dissipation. |
| 74LVC74AD,118 (Nexperia) | Same SOIC-14 package and 1.65–3.6 V operation; max fclock = 150 MHz at 3.3 V/85°C (vs 100 MHz for SN74LVC74ADRE4 at 125°C); different ESD rating (IEC 61000-4-2 contact ±8 kV). | Higher speed at commercial temp range; enhanced ESD robustness for handheld or exposed I/O interfaces. | Prefer for cost-sensitive consumer-grade designs operating ≤85°C with stringent ESD immunity requirements. |
Compared with SN74LVC74APWRE4 and 74LVC74AD,118, the SN74LVC74ADRE4 offers superior thermal reliability at full industrial temperature (–40°C to 125°C) in the widely supported SOIC package, making it optimal for mission-critical embedded control where long-term stability outweighs marginal speed or footprint gains.
Availability
SN74LVC74ADRE4 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and telecom line card timing requiring stable component supply across extended temperature and long product lifecycles.
Supply support for SN74LVC74ADRE4 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 SN74LVC74ADRE4 belongs to TI's LVC (Low-Voltage CMOS) logic family, designed specifically for low-voltage, high-speed, mixed-signal interfacing in industrial, automotive, and communications equipment.
FAQ
What is the maximum clock frequency supported by the SN74LVC74ADRE4?
The SN74LVC74ADRE4 supports up to 100 MHz at VCC = 3.3 V and TA = –40°C to 125°C, and up to 150 MHz at TA = –40°C to 85°C under same voltage conditions. These values are guaranteed by TI's switching characteristics tables and validated across process corners and temperature extremes.
Does the SN74LVC74ADRE4 require external pull-up or pull-down resistors on PRE and CLR inputs?
No - the SN74LVC74ADRE4 has no internal weak pull-ups or pull-downs on PRE or CLR. Unused PRE/CLR inputs must be actively tied to VCC (to disable) or GND (to assert) per TI's SCBA004 guidance; floating inputs risk metastability or unintended state changes.
Can the SN74LVC74ADRE4 safely interface with 5 V logic outputs?
Yes - the SN74LVC74ADRE4 inputs tolerate up to 5.5 V regardless of VCC level, allowing direct connection to 5 V CMOS or TTL outputs without level-shifting circuitry, provided output current limits (±50 mA) are respected.
What is the recommended bypass capacitor for the SN74LVC74ADRE4 VCC pin?
Texas Instruments recommends a 0.1 µF ceramic capacitor placed as close as possible to the VCC pin of the SN74LVC74ADRE4, with short, low-inductance traces to GND - this suppresses high-frequency switching noise and prevents supply droop during output transitions.
Is the SN74LVC74ADRE4 RoHS compliant and lead-free?
Yes - the SN74LVC74ADRE4 is RoHS compliant and features NiPdAu (NIPDAU) lead finish, with MSL Level-1 rating (260°C peak reflow, unlimited floor life), per TI's official packaging documentation and orderable part status.
SN74LVC74ADRE4 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:
- 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-SOIC
SN74LVC74ADRE4 FAQ
1.How can I place an order for SN74LVC74ADRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC74ADRE4 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 SN74LVC74ADRE4 reliable?
The price and inventory of SN74LVC74ADRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC74ADRE4 is usually 5 days.
3.What payment methods are accepted for SN74LVC74ADRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC74ADRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC74ADRE4?
SN74LVC74ADRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC74ADRE4 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 SN74LVC74ADRE4?
For technical support, including SN74LVC74ADRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC74ADRE4 requirements.
6.How does Aetrix verify that SN74LVC74ADRE4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC74ADRE4 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 SN74LVC74ADRE4 meets industry standards.
7.What is the process for return or replacement of SN74LVC74ADRE4?
All SN74LVC74ADRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC74ADRE4, 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 SN74LVC74ADRE4 part is unused and in its original packaging.
Return procedure for SN74LVC74ADRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVC74ADRE4 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…
