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Texas Instruments SN74LVC374ADWRE4
- Part No.:
- SN74LVC374ADWRE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVC374ADWRE4.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,509
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Product details
Overview
SN74LVC374ADWRE4 from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs, designed for 1.65 V to 3.6 V operation. It features 8-bit data latching on the rising edge of CLK, independent 3-state control via OE, and 5.5-V-tolerant inputs-enabling mixed-voltage interfacing in bus buffering and I/O port expansion applications.
For engineers reviewing the SN74LVC374ADWRE4 datasheet, SN74LVC374ADWRE4 pinout, SN74LVC374ADWRE4 application, or SN74LVC374ADWRE4 equivalent, key selection criteria include tpd ≤ 7 ns at 3.3 V, Ioff support for live insertion, ±24 mA output drive, 3-state timing (ten/tdis), and SOIC-20 package compatibility with industrial temperature range (–40°C to 85°C).
Technical Context
This device implements eight independent D-type latches synchronized to the rising edge of CLK, each with dedicated D input and Q output. The OE pin controls all eight outputs simultaneously, placing them in high-impedance state without affecting internal latch states or clock/data propagation.
It supports mixed-mode signal operation: inputs tolerate up to 5.5 V regardless of VCC (1.65–3.6 V), enabling level translation from 5-V logic to 3.3-V systems. Ioff circuitry disables outputs when VCC = 0 V, preventing back-drive current during partial power-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - enables direct use in 1.8-V, 2.5-V, and 3.3-V digital systems without level shifters |
| tpd (CLK→Q) | 7 ns max at VCC = 3.3 V, TA = 85°C - supports reliable 100-MHz bus operation with timing margin |
| IOL / IOH | ±24 mA at VCC = 3.0 V - drives multiple LVC/LVT loads or light capacitive buses without external buffers |
| Input Voltage Tolerance | 0 V to 5.5 V - allows interfacing with legacy 5-V microcontrollers, FPGAs, or ASICs |
| Ioff Current | ±20 μA max at VI/VO = 5.5 V - ensures safe hot-plug and partial-power-down in modular systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and communications equipment |
| ESD Rating | 2000-V HBM, 1000-V CDM - meets robustness requirements for assembly and field-replaceable modules |
Pinout & Package
SN74LVC374ADWRE4 uses a 20-pin SOIC (DW) package with 12.80 mm × 7.50 mm body size and standard 0.050″ lead pitch. Pin 1 is marked with a bevelled corner or dot; pin numbering follows counter-clockwise convention from top-left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable Input | Active-low control for all eight Q outputs; asserts high-impedance state when high, no effect on internal latch state |
| 2 (1Q) | Output 1 | 3-state buffered output corresponding to D1; driven only when OE is low |
| 3 (1D) | Data Input 1 | Edge-triggered input sampled on rising CLK edge; 5.5-V tolerant |
| 4–5, 7, 9, 12–13, 15, 16–19 | D2–D8, Q2–Q8 | Paired data inputs and latched outputs for channels 2 through 8; identical electrical behavior to channel 1 |
| 10 (GND) | Ground Reference | Primary return path for all I/O and internal logic; must be low-impedance connection |
| 11 (CLK) | Clock Input | Rising-edge sensitive; synchronizes all eight D-to-Q transfers; 5.5-V tolerant |
| 20 (VCC) | Power Supply | Single supply for core logic and output drivers; requires local 0.1-μF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC Range | 1.65 V to 3.6 V operation enables drop-in replacement across 1.8-V, 2.5-V, and 3.3-V system rails |
| 5.5-V-Tolerant Inputs | Allows direct connection to 5-V logic without external resistors or translators-reduces BOM count and layout area |
| High-Drive Outputs | ±24 mA per output at 3.0 V supports driving 10+ LVC loads or 30-pF bus capacitance at 100 MHz |
| Ioff Protection | Prevents damaging current flow during power sequencing or hot-swap events-critical for modular backplane designs |
| Low Ground Bounce | VOLP < 0.8 V at VCC = 3.3 V ensures signal integrity in noise-sensitive mixed-signal environments |
Applications
| Industrial PLC I/O Expansion | Embedded Microcontroller Bus Interface |
|---|---|
Use Scenario: Adding parallel digital I/O capability to a programmable logic controller using a 3.3-V MCU with limited native GPIO. IC Role / Device Role / Timing Role: Acts as an 8-bit bidirectional data latch and bus driver, isolating MCU pins from field-side loads while supporting real-time read/write cycles. Use Value: Enables direct 5-V sensor/actuator interfacing via 5.5-V-tolerant inputs and delivers ±24 mA drive per channel-eliminating discrete level shifters and buffer ICs. | Use Scenario: Interfacing an FPGA's general-purpose I/O bank to a legacy 5-V peripheral subsystem in an industrial gateway. IC Role / Device Role / Timing Role: Provides level-translating, edge-triggered data capture and 3-state bus arbitration between mismatched voltage domains. Use Value: Supports 100-MHz clock rates with 7-ns propagation delay and maintains signal integrity via low VOLP/VOHV-ensuring setup/hold compliance across voltage boundaries. |
| Server Baseboard Management Controller (BMC) | Automotive Infotainment Display Interface |
Use Scenario: Managing status LEDs, fan control signals, and hardware reset lines in a server baseboard management unit operating at 3.3 V. IC Role / Device Role / Timing Role: Functions as a buffered output expander with independent OE control, allowing dynamic reconfiguration of LED banks without disrupting other BMC functions. Use Value: Ioff protection prevents back-driving during BMC firmware updates or power cycling-ensuring safe hot-swap of daughterboards and FRUs. | Use Scenario: Driving segment-select lines and column drivers in a segmented LCD display within an automotive infotainment head unit. IC Role / Device Role / Timing Role: Serves as a high-current, glitch-free latch for display timing control signals synchronized to the graphics processor's pixel clock. Use Value: Delivers clean 24-mA drive into capacitive display loads while maintaining <1.5 ns output skew-preventing visible flicker or ghosting on high-resolution panels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC574ADWR | Same SOIC-20 package and pinout; identical VCC range, timing, and drive strength; differs only in marking and tape/reel packaging (no E4 suffix) | No functional difference; suitable for same PCB layouts and firmware | Select when standard TI commercial-grade marking and RoHS-compliant NIPDAU finish are sufficient |
| 74LVC374PW,118 | NXP variant in TSSOP-20; same logic function and DC specs but slightly higher tpd (8.5 ns max at 3.3 V) and different thermal resistance (RθJA = 118°C/W) | Requires PCB footprint change; lower drive (±24 mA at 3.0 V vs ±32 mA for some NXP versions) and reduced thermal margin | Choose only if TSSOP-20 footprint is already standardized and thermal derating is acceptable |
Compared with SN74LVC574ADWR, SN74LVC374ADWRE4 offers identical functionality with TI's E4 qualification marking for extended traceability; versus 74LVC374PW,118, it provides superior thermal performance (RθJA = 102.5°C/W) and guaranteed 7-ns tpd-critical for high-density, thermally constrained industrial layouts.
Availability
SN74LVC374ADWRE4 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, embedded microcontroller bus interface, server BMC signal management, and automotive infotainment display control requiring stable component supply and long-term lifecycle support.
Supply support for SN74LVC374ADWRE4 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 for industrial, automotive, and communications markets.
SN74LVC374ADWRE4 belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for high-speed, low-power, mixed-voltage interfacing in space-constrained industrial and computing systems.
FAQ
What is the maximum clock frequency supported by SN74LVC374ADWRE4?
SN74LVC374ADWRE4 supports a maximum clock frequency of 100 MHz at VCC = 3.3 V and TA ≤ 85°C. At VCC = 2.5 V, the rated fmax drops to 95 MHz, and at VCC = 1.8 V it is 55 MHz under –40°C to 85°C conditions. These values are specified in the Switching Characteristics table of the official TI datasheet SCAS296O.
Does SN74LVC374ADWRE4 support 5-V input signals?
Yes, SN74LVC374ADWRE4 accepts input voltages up to 5.5 V on all I/O pins-including CLK, D, and OE-regardless of VCC (1.65 V to 3.6 V). This allows direct interfacing with 5-V logic families without external level-shifting components, as confirmed in the "Inputs Accept Voltages to 5.5 V" feature and Electrical Characteristics section of the SN74LVC374A datasheet.
What is the purpose of the Ioff feature in SN74LVC374ADWRE4?
The Ioff feature in SN74LVC374ADWRE4 disables output drivers when VCC = 0 V, preventing current backflow from powered I/O lines into the unpowered device. This protects against damage during hot-swap, partial power-down, or board insertion-making SN74LVC374ADWRE4 suitable for modular systems where power sequencing is not tightly controlled.
Can SN74LVC374ADWRE4 drive multiple LVC loads simultaneously?
Yes, SN74LVC374ADWRE4 can drive up to 10 LVC loads per output at 3.3 V, based on its ±24 mA output drive capability and typical LVC input current of ±1 μA. The device's low VOLP (<0.8 V) and VOHV (>2 V) ensure signal integrity even under heavy capacitive loading, as verified in the Recommended Operating Conditions and Switching Characteristics sections of the TI datasheet.
Is SN74LVC374ADWRE4 pin-compatible with other members of the SN74LVC374A family?
Yes, SN74LVC374ADWRE4 is fully pin-compatible with all SOIC-20 variants in the SN74LVC374A family-including SN74LVC374ADW and SN74LVC374ADWR-as confirmed by TI's Package Option Addendum. All share identical pin configuration, electrical behavior, and timing characteristics; only packaging format (tube vs. tape-and-reel) and marking differ.
SN74LVC374ADWRE4 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:
- Discontinued at Digi-Key
- 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:
- 7ns @ 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:
- 4 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SN74LVC374ADWRE4 FAQ
1.How can I place an order for SN74LVC374ADWRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC374ADWRE4 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 SN74LVC374ADWRE4 reliable?
The price and inventory of SN74LVC374ADWRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC374ADWRE4 is usually 5 days.
3.What payment methods are accepted for SN74LVC374ADWRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC374ADWRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC374ADWRE4?
SN74LVC374ADWRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC374ADWRE4 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 SN74LVC374ADWRE4?
For technical support, including SN74LVC374ADWRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC374ADWRE4 requirements.
6.How does Aetrix verify that SN74LVC374ADWRE4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC374ADWRE4 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 SN74LVC374ADWRE4 meets industry standards.
7.What is the process for return or replacement of SN74LVC374ADWRE4?
All SN74LVC374ADWRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC374ADWRE4, 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 SN74LVC374ADWRE4 part is unused and in its original packaging.
Return procedure for SN74LVC374ADWRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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