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Texas Instruments SN74LVC374AQDWRQ1
- Part No.:
- SN74LVC374AQDWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVC374AQDWRQ1.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,636
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Product details
Overview
SN74LVC374AQDWRQ1 from Texas Instruments is an automotive-qualified octal edge-triggered D-type flip-flop with 3-state outputs, operating from 2 V to 3.6 V, featuring 8.5 ns max propagation delay at 3.3 V, ±24 mA output drive, and Ioff support for partial-power-down mode. It serves as a bus interface register in automotive infotainment and ADAS domain controllers.
For engineers reviewing the SN74LVC374AQDWRQ1 datasheet, SN74LVC374AQDWRQ1 pinout, SN74LVC374AQDWRQ1 application, or SN74LVC374AQDWRQ1 equivalent, this page delivers verified timing parameters, automotive-grade thermal and ESD specs, SOIC-20 package details, and validated alternative options for mixed-voltage bus buffering.
Technical Context
This device implements eight independent positive-edge-triggered D flip-flops with synchronous data capture on CLK↑ and individual 3-state control via a shared OE input. Each Q output drives high-impedance (Z) when OE is high, enabling bidirectional bus arbitration without external pull-ups.
It supports mixed-mode signal operation: inputs tolerate 5.5 V regardless of VCC (2–3.6 V), allowing direct interfacing between 5-V legacy peripherals and 3.3-V microcontrollers. The Ioff circuit prevents backflow current during power sequencing, satisfying automotive ASIL-B system-level requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 3.6 V - Enables direct use in 2.5-V/3.3-V automotive power domains without level shifters. |
| Max tpd | 8.5 ns at 3.3 V - Supports ≥100 MHz clock frequency in high-speed data latching applications. |
| IOL / IOH | ±24 mA - Drives heavy capacitive loads (e.g., 50-pF buses) without signal degradation. |
| VI Max | 5.5 V - Accepts 5-V TTL logic inputs while powered from 3.3-V rail, eliminating translation ICs. |
| Ioff Support | Yes - Disables outputs during power-down, preventing fault currents in multi-rail automotive ECUs. |
| Operating Temp | –40°C to +125°C - Qualified per AEC-Q100 Grade 1 for under-hood and cockpit electronics. |
| ESD Rating | >2000 V HBM - Meets automotive board-level ESD immunity requirements without added protection. |
Pinout & Package
SN74LVC374AQDWRQ1 is housed in a 20-pin SOIC (DW) package, 12.8 mm × 7.5 mm × 2.65 mm, RoHS-compliant, with standard JEDEC MS-013 outline and MSL Level-1 reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Data Inputs (1D–8D) | Asynchronous D inputs sampled on rising CLK edge; tolerate 5.5 V regardless of VCC. |
| 9 | GND | Ground reference for all internal logic and output drivers; must be low-impedance for noise control. |
| 10 | VCC | Primary supply (2–3.6 V); powers core logic and output buffers; decoupling required near pin. |
| 11, 13, 14, 15, 16, 17, 18, 19 | Outputs (1Q–8Q) | 3-state CMOS outputs; driven high/low or placed in high-Z by OE; ±24 mA drive capability. |
| 12 | OE | Active-low output enable; high = all Q outputs in high-impedance state; does not affect internal latch state. |
| 20 | CLK | Positive-edge clock input; triggers simultaneous capture of all eight D inputs into respective Q outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified - Validated for continuous operation from –40°C to +125°C in automotive ECUs. |
| Mixed-Voltage Interface | 5.5-V-tolerant inputs on 3.3-V VCC - Enables direct connection to 5-V sensors or legacy MCUs without external translators. |
| Output Ground Bounce Control | Typical VOLP < 0.8 V at 3.3 V - Reduces switching noise coupling into analog subsystems in mixed-signal automotive modules. |
| Partial-Power-Down Safety | Ioff limits reverse current during VCC ramp-down - Prevents bus contention and latch-up in multi-supply domain systems. |
| High-Speed Bus Driving | 8.5 ns tpd + 24 mA drive - Supports clean signal integrity on 50-pF automotive CAN/FlexRay auxiliary buses or display interfaces. |
Applications
| Automotive Instrument Cluster | ADAS Camera Interface |
|---|---|
Use Scenario: Latching pixel data from image sensor before transmission over LVDS or parallel bus to SoC. IC Role / Device Role / Timing Role: Octal D flip-flop synchronizing asynchronous sensor output to SoC clock domain; OE enables dynamic bus sharing. Use Value: Eliminates metastability risk during domain crossing and provides 24 mA drive to sustain signal integrity across 15-cm PCB traces. | Use Scenario: Buffering configuration registers between 5-V camera module and 3.3-V vision processor. IC Role / Device Role / Timing Role: Voltage-translating register holding camera settings; operates with 5-V inputs and 3.3-V VCC. Use Value: Removes need for discrete level shifters, reducing BOM count and layout area in space-constrained camera ECU designs. |
| Body Control Module (BCM) | Infotainment Head Unit |
Use Scenario: Isolating and latching switch inputs (door locks, window controls) before polling by MCU. IC Role / Device Role / Timing Role: Input port expander with debounced sampling on CLK edge; OE allows MCU to disable bus loading during sleep. Use Value: Ioff ensures zero current flow during BCM deep-sleep mode, meeting <100 µA quiescent current targets. | Use Scenario: Driving LED backlight rows and touch controller I/O lines from a 3.3-V application processor. IC Role / Device Role / Timing Role: Output port expander with 3-state control; CLK synchronizes brightness updates to display refresh cycle. Use Value: 8.5 ns tpd enables precise PWM timing alignment across 8 LED channels, minimizing visible flicker. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC374APWRQ1 | TSSOP-20 package (PW), 1.2 mm height, 83 °C/W θJA vs. 58 °C/W for DW - higher thermal resistance. | Better suited for space-constrained layouts where SOIC footprint is unavailable; lower drive margin at high ambient temp. | Select when PCB real estate is limited and thermal derating is acceptable; verify junction temp rise under full load. |
| SN74LVCH16374AQGRQ1 | 16-bit version, dual 8-bit banks, separate OE per bank, 3.6-V max VCC - identical voltage range and automotive qualification. | Supports two independent 8-bit data paths (e.g., dual-display or dual-camera streams) with independent gating. | Choose when system requires concurrent latching of two data sets or bank-selectable isolation without additional ICs. |
Compared with SN74LVC374AQDWRQ1, the TSSOP variant trades thermal performance for compactness, while the 16-bit LVCH16374 offers scalable channel count and bank-level control-both retain AEC-Q100 qualification but differ in integration density and thermal management.
Availability
SN74LVC374AQDWRQ1 is available at Aetrix Electronics and suitable for automotive instrument clusters, ADAS camera interfaces, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC374AQDWRQ1 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 automotive-grade logic solutions, with decades of automotive qualification experience and AEC-Q100-compliant manufacturing.
The SN74LVC374A-Q1 belongs to TI's automotive logic portfolio, designed specifically for robust, mixed-voltage data latching in safety-critical vehicle subsystems including powertrain, chassis, and driver-assistance systems.
FAQ
What is the maximum clock frequency supported by SN74LVC374AQDWRQ1?
The SN74LVC374AQDWRQ1 supports a maximum clock frequency of 100 MHz at VCC = 3.3 V, as specified in the timing requirements table. This is enabled by its 8.5 ns typical propagation delay and 3.3 ns minimum pulse width for CLK high/low. At 2.7 V, the max frequency reduces to 80 MHz due to slower switching characteristics.
Does SN74LVC374AQDWRQ1 support 5-V input signals while powered from 3.3 V?
Yes, SN74LVC374AQDWRQ1 accepts input voltages up to 5.5 V across all D and OE pins, regardless of VCC (2–3.6 V). This mixed-mode operation is explicitly documented in the datasheet and enables direct interfacing with 5-V peripherals without external level shifters, simplifying design in heterogeneous voltage systems.
What is the purpose of the Ioff feature in SN74LVC374AQDWRQ1?
The Ioff feature in SN74LVC374AQDWRQ1 disables output drivers when VCC = 0 V, preventing damaging current backflow from live bus lines into the unpowered device. This is critical in automotive multi-rail systems during power sequencing or partial shutdown, ensuring compliance with ISO 16750-2 transient and AEC-Q100 stress test requirements.
Can SN74LVC374AQDWRQ1 be used in high-impedance bus hold applications?
No, SN74LVC374AQDWRQ1 does not include bus-hold circuitry. Its 3-state outputs enter high-impedance only when OE is asserted (high); no internal weak pull-up/down is provided. External termination or dedicated bus-hold ICs are required if signal retention in high-Z state is needed.
What is the recommended OE biasing strategy during power-up for SN74LVC374AQDWRQ1?
To ensure outputs remain in high-impedance during power-up, OE should be tied to VCC through a pullup resistor. TI recommends a minimum value determined by the driving source's current-sinking capability - typically 10 kΩ suffices for most microcontroller GPIOs. This prevents unintended bus contention before firmware initializes the device.
SN74LVC374AQDWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 100 MHz
- Max Propagation Delay @ V, Max CL:
- 8.5ns @ 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:
- 4 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SN74LVC374AQDWRQ1 FAQ
1.How can I place an order for SN74LVC374AQDWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC374AQDWRQ1 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 SN74LVC374AQDWRQ1 reliable?
The price and inventory of SN74LVC374AQDWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC374AQDWRQ1 is usually 5 days.
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SN74LVC374AQDWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC374AQDWRQ1 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 SN74LVC374AQDWRQ1?
For technical support, including SN74LVC374AQDWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC374AQDWRQ1 requirements.
6.How does Aetrix verify that SN74LVC374AQDWRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74LVC374AQDWRQ1 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 SN74LVC374AQDWRQ1 meets industry standards.
7.What is the process for return or replacement of SN74LVC374AQDWRQ1?
All SN74LVC374AQDWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC374AQDWRQ1, 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 SN74LVC374AQDWRQ1 part is unused and in its original packaging.
Return procedure for SN74LVC374AQDWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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