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Texas Instruments SN74LVC374ADGVR
- Part No.:
- SN74LVC374ADGVR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVC374ADGVR.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,619
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Product details
Overview
SN74LVC374ADGVR 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 20-pin TVSOP packaging, 8-bit data latching on CLK rising edge, OE-controlled output enable/disable, and 5.5-V-tolerant inputs - enabling mixed-voltage interfacing in bus buffer and I/O port applications.
For engineers reviewing the SN74LVC374ADGVR datasheet, SN74LVC374ADGVR pinout, SN74LVC374ADGVR application, or SN74LVC374ADGVR equivalent, key selection criteria include tpd ≤ 7.6 ns at 3.3 V, Ioff support for live insertion, 32-mA drive capability, 3-state output control timing (ten/tdis), and compatibility with 1.65–3.6-V supply rails in space-constrained PCB layouts.
Technical Context
This device implements eight independent D-type flip-flops, each triggered on the positive edge of CLK, with synchronous data capture and asynchronous 3-state control via OE. All outputs retain latched state when OE is high, and enter high-impedance mode when OE is low - decoupling internal logic from bus loading.
It supports mixed-mode signal operation: inputs tolerate up to 5.5 V regardless of VCC (1.65–3.6 V), enabling direct interfacing between 5-V legacy logic and 3.3-V or lower systems. The Ioff feature disables outputs and blocks current backflow when VCC = 0 V, supporting partial-power-down and hot-swap scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - enables operation across low-voltage microcontrollers and mixed-supply systems |
| tpd (CLK→Q) | 7.6 ns max at VCC = 3.3 V, TA = 125°C - ensures reliable 100-MHz clocking in high-speed digital interfaces |
| Ioff Current | ±20 μA max at VI/VO = 5.5 V - prevents damaging back-current during power sequencing or hot insertion |
| IOH/IOL Drive | –24 mA / +24 mA at VCC = 3.0 V - drives multiple CMOS loads or light capacitive buses without external buffers |
| Input Voltage Tolerance | 0 V to 5.5 V - allows direct connection to 5-V TTL or LVTTL sources without level-shifting circuitry |
| 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 JEDEC JESD22-A114/A101 for robust handling in manufacturing environments |
Pinout & Package
SN74LVC374ADGVR uses a 20-pin Thin Very Small Outline Package (TVSOP) with 0.4-mm lead pitch and 5.00 mm × 4.40 mm body size - optimized for high-density PCB layouts while maintaining hand-solderability and automated assembly compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable input | Active-low control: pulls all eight Q outputs to high-impedance when low; no effect on internal latch state |
| 2–9, 12–19 (1Q–8Q, 1D–8D) | Output and Data input pairs | Eight independent D/Q channels; each Q reflects corresponding D sampled on CLK↑; bidirectional data flow not supported |
| 11 (CLK) | Clock input | Positive-edge-triggered; all eight flip-flops sample D inputs simultaneously on rising edge |
| 10 (GND) | Ground reference | Primary return path for logic and output currents; must be low-impedance and adjacent to bypass capacitor |
| 20 (VCC) | Power supply | Single supply rail for core logic and output drivers; requires local 0.1-μF ceramic bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range | 1.65 V to 3.6 V - supports battery-powered, low-power, and multi-rail system designs without voltage translation |
| 5.5-V-tolerant inputs | Enables direct interface with 5-V logic families (e.g., TTL, LVTTL) while operating at 1.8 V or 2.5 V VCC |
| 3-state outputs with fast enable/disable | ten ≤ 8.0 ns, tdis ≤ 7.0 ns at 3.3 V - minimizes bus contention windows in shared-data-path architectures |
| Ioff partial-power-down protection | Prevents current backflow when VCC = 0 V - essential for hot-plug modules, modular backplanes, and power-gated subsystems |
| Latch-up immunity | >250 mA per I/O - exceeds JEDEC JESD78 requirements, ensuring robustness in noisy industrial environments |
Applications
| Industrial PLC I/O Expansion | Embedded Microcontroller Bus Interface |
|---|---|
|
Use Scenario: Adding parallel digital I/O to a compact programmable logic controller using a 3.3-V MCU with limited GPIO count. IC Role / Device Role / Timing Role: Acts as an 8-bit output latch and input register, synchronizing field-device signals to the MCU clock domain via CLK and OE control. Use Value: Eliminates need for discrete level shifters or pull-up networks due to 5.5-V input tolerance and 32-mA drive - reducing BOM cost and board area. |
Use Scenario: Isolating and buffering address/data lines between a 3.3-V ARM Cortex-M host and legacy 5-V peripheral ICs on a development board. IC Role / Device Role / Timing Role: Functions as a unidirectional bus hold register, capturing peripheral status on CLK↑ and presenting it to the MCU via 3-state outputs controlled by OE. Use Value: Enables clean voltage-domain bridging without external translators; tpd ≤ 7.6 ns supports 100-MHz burst transfers in memory-mapped peripherals. |
| Automotive Infotainment Display Driver | Network Equipment LED/Status Indication |
|
Use Scenario: Driving 8-channel LED backlight or segment controls in a vehicle head-unit display, where EMI resilience and thermal stability are critical. IC Role / Device Role / Timing Role: Serves as a buffered output latch, holding steady-state display data while allowing dynamic updates synchronized to system timing. Use Value: Ioff and –40°C to +85°C rating ensure safe operation during cold-cranking and thermal cycling; 24-mA per-output drive directly lights LEDs without current-limiting resistors. |
Use Scenario: Managing status indicators (e.g., link/activity LEDs) across multiple Ethernet PHYs in a managed switch, where space and power efficiency are constrained. IC Role / Device Role / Timing Role: Provides isolated, glitch-free LED control signals via 3-state outputs - enabling shared control lines and dynamic reassignment. Use Value: Low ICC (≤10 μA typical) and small TVSOP footprint reduce standby power and layout complexity versus discrete transistor arrays. |
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 |
|---|---|---|---|
| SN74LVC373ADGVR | Octal transparent latch (no clock edge trigger); outputs follow D inputs when LE is low; no CLK pin | Suitable for level-sensitive data capture (e.g., address latching), not edge-triggered storage | Select when synchronous sampling on CLK↑ is not required and simpler enable-based control suffices |
| SN74LVCH16374ADGG | 16-bit version in 48-pin TSSOP; includes bus-hold circuitry and higher drive (±32 mA) | Targets wider data buses (e.g., 16-bit microprocessor interfaces); larger footprint and higher pin count | Choose for scalability to 16-bit paths or where bus-hold eliminates need for external pull-ups on unused inputs |
Compared with SN74LVC374ADGVR, SN74LVC373ADGVR trades clock synchronization for simpler level-sensitive control, while SN74LVCH16374ADGG extends bit width and adds bus-hold - making SN74LVC374ADGVR optimal for compact, edge-triggered 8-bit latching where timing precision and minimal package size are prioritized.
Availability
SN74LVC374ADGVR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, embedded microcontroller bus interface, automotive infotainment display driver, and network equipment LED/status indication requiring stable component supply and long-term production continuity.
Supply support for SN74LVC374ADGVR 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 connectivity technologies, with decades of experience in high-reliability logic and interface solutions.
SN74LVC374ADGVR belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-power, high-speed, mixed-voltage interoperability in industrial, automotive, and communications infrastructure applications.
FAQ
What is the maximum clock frequency supported by SN74LVC374ADGVR?
SN74LVC374ADGVR supports up to 100 MHz at VCC = 3.3 V and TA = 85°C, with fmax dropping to 80 MHz at 125°C. At lower voltages (e.g., 1.8 V), maximum frequency is 55 MHz under full temperature range. These values are validated per TI's switching characteristics tables and apply specifically to the SN74LVC374ADGVR in TVSOP packaging.
Does SN74LVC374ADGVR require external pull-up resistors on OE?
Yes - to ensure outputs remain in high-impedance during power-up or power-down, OE should be tied to VCC via a pull-up resistor. TI recommends minimum resistance based on driver sink capability; typical values range from 4.7 kΩ to 10 kΩ. This prevents bus contention before system initialization completes, and applies directly to SN74LVC374ADGVR's operational safety.
Can SN74LVC374ADGVR safely interface with 5-V logic inputs?
Yes - SN74LVC374ADGVR inputs are rated for 0 V to 5.5 V regardless of VCC (1.65–3.6 V), enabling direct connection to 5-V TTL or LVTTL outputs without level shifters. This overvoltage tolerance is specified in the Absolute Maximum Ratings and Electrical Characteristics sections of the official datasheet for SN74LVC374ADGVR.
What is the thermal resistance (RθJA) of SN74LVC374ADGVR in its TVSOP package?
SN74LVC374ADGVR in the 20-pin TVSOP (DGV) package has a junction-to-ambient thermal resistance (RθJA) of 102.5°C/W, as documented in TI's Thermal Information table. This value assumes standard JEDEC 2-layer board conditions and informs thermal design margins for continuous operation at full drive strength.
Is SN74LVC374ADGVR pin-compatible with other packages in the SN74LVC374A family?
No - SN74LVC374ADGVR uses the 20-pin TVSOP (DGV) package with 0.4-mm pitch, while other variants use SOIC (DW), SSOP (DB), TSSOP (PW), or PDIP (N). Pin numbering and physical dimensions differ; only electrical functionality and logic behavior are consistent across packages. Board layout must be redesigned when substituting SN74LVC374ADGVR for another variant.
SN74LVC374ADGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 20-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-TVSOP
SN74LVC374ADGVR FAQ
1.How can I place an order for SN74LVC374ADGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC374ADGVR 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 SN74LVC374ADGVR reliable?
The price and inventory of SN74LVC374ADGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC374ADGVR is usually 5 days.
3.What payment methods are accepted for SN74LVC374ADGVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC374ADGVR transactions.
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4.How is shipping managed for SN74LVC374ADGVR?
SN74LVC374ADGVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC374ADGVR 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 SN74LVC374ADGVR?
For technical support, including SN74LVC374ADGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC374ADGVR requirements.
6.How does Aetrix verify that SN74LVC374ADGVR is sourced from the original manufacturer or authorized distributors?
All SN74LVC374ADGVR 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 SN74LVC374ADGVR meets industry standards.
7.What is the process for return or replacement of SN74LVC374ADGVR?
All SN74LVC374ADGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC374ADGVR, 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 SN74LVC374ADGVR part is unused and in its original packaging.
Return procedure for SN74LVC374ADGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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