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Texas Instruments SN74LVC827ADWG4
- Part No.:
- SN74LVC827ADWG4
- Manufacturer:
- Texas Instruments
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVC827ADWG4.pdf
- Description:
- IC BUF NON-INVERT 3.6V 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,588
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Product details
Overview
SN74LVC827ADWG4 from Texas Instruments is a 10-bit noninverting buffer/driver with 3-state outputs, designed for 1.65-V to 3.6-V VCC operation. It features dual active-low output-enable inputs (OE1, OE2), 5.5-V-tolerant inputs, 24-mA output drive at 3.3 V, and a maximum propagation delay of 6.7 ns at 3.3 V - enabling high-speed bus interfacing in mixed-voltage systems such as LED display drivers and telecom infrastructure backplanes.
For engineers reviewing the SN74LVC827ADWG4 datasheet, SN74LVC827ADWG4 pinout, SN74LVC827ADWG4 application, or SN74LVC827ADWG4 equivalent, key selection criteria include its Ioff-enabled live insertion support, 3.3-V/5-V mixed-mode signal compatibility, 24-pin SOIC (DW) package footprint, and guaranteed 3-state timing performance across –40°C to 125°C.
Technical Context
The SN74LVC827ADWG4 implements a dual-gated 3-state control architecture: both OE1 and OE2 must be low to enable all ten Y outputs; either high forces all outputs into high-impedance. Its CMOS design supports true data buffering without inversion, and the Ioff circuitry ensures isolation when VCC = 0 V - critical for hot-swap and partial-power-down systems.
Input tolerance up to 5.5 V enables direct interfacing with legacy 5-V logic while operating at 3.3 V or lower, eliminating external level shifters. Output ground bounce (VOLP < 0.8 V) and undershoot (VOHV > 2 V) are characterized at 3.3 V/25°C, supporting clean signal integrity in high-drive, multi-load bus environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - supports single-supply operation across low-voltage embedded and industrial rails |
| Input Voltage Tolerance | Up to 5.5 V - allows direct connection to 5-V sources without level-shifting circuitry |
| Max Propagation Delay | 6.7 ns at VCC = 3.3 V - enables reliable operation in ≥150-MHz bus applications |
| Output Drive Strength | ±24 mA at VCC = 3.3 V - sufficient to drive 10+ TTL loads or multiple LEDs simultaneously |
| Ioff Support | Active at VCC = 0 V - prevents back-drive current during live insertion or power sequencing |
| Operating Temperature | –40°C to 125°C - qualified for automotive under-hood and industrial control environments |
| ESD Rating (HBM) | 2000 V - exceeds JEDEC JS-001 requirements for robust handling in manufacturing |
Pinout & Package
SN74LVC827ADWG4 is housed in a 24-pin SOIC (DW) package measuring 15.40 mm × 7.50 mm, with standard 1.27-mm lead pitch and gull-wing leads compatible with IPC-7351 footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 | OE1, OE2 | Active-low 3-state enable inputs - both must be low for output assertion; OR logic enables flexible control routing |
| 2–11 | A1–A10 | Buffer input terminals - accept 5.5-V-tolerant signals and pass true (noninverted) logic to outputs |
| 14–23 | Y10–Y1 | Buffer output terminals - deliver rail-to-rail CMOS levels with ±24-mA drive capability per pin |
| 12 | GND | Ground reference - shared return path for all inputs, outputs, and internal logic |
| 24 | VCC | Power supply - supplies core logic and output drivers; requires local 0.1-μF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage translation | 5.5-V-tolerant inputs operate reliably with 3.3-V VCC - eliminates discrete level shifters in 3.3/5-V system interfaces |
| Dual 3-state enable logic | AND-gated OE1/OE2 control allows hierarchical bus arbitration - e.g., one enable for subsystem, second for board-level gating |
| Ioff partial-power-down protection | Blocks current flow between powered/unpowered sections - essential for PCIe-style hot-plug and modular backplane designs |
| Low ground bounce | VOLP < 0.8 V at 3.3 V/25°C - minimizes noise coupling into shared ground planes during simultaneous switching |
| High ESD robustness | 2000-V HBM rating - reduces field failure risk in assembly and end-equipment handling |
Applications
| LED Display Drivers | Telecom Backplane Interfaces |
|---|---|
Use Scenario: Driving multiplexed 7-segment or dot-matrix LED panels in industrial HMIs and network equipment status displays. IC Role / Device Role / Timing Role: Noninverting buffer providing high-current sink/source capability to illuminate multiple segments simultaneously while maintaining logic-level integrity. Use Value: 24-mA per-output drive eliminates need for external transistor arrays; 5.5-V input tolerance allows direct interface with 5-V microcontroller GPIOs. | Use Scenario: Isolating and driving parallel address/data buses between line cards and switch fabric controllers in carrier-grade routers. IC Role / Device Role / Timing Role: Bus driver with fast tpd (6.7 ns) and controlled edge rates, enabling synchronous transfers across long PCB traces. Use Value: Dual OE inputs allow card-level and slot-level enable control; Ioff prevents back-driving during hot-swap events. |
| Servers Memory Subsystem Buffers | Industrial I/O Expanders |
Use Scenario: Buffering parity or ECC bits between memory controller and DIMM modules in enterprise servers. IC Role / Device Role / Timing Role: Low-skew, high-drive buffer ensuring signal integrity on stub-loaded memory bus lines. Use Value: Guaranteed tpd matching across all 10 channels minimizes skew-induced timing violations; 125°C rating supports operation near CPU heat zones. | Use Scenario: Expanding GPIO count for PLC modules requiring isolated digital output control of solenoids, relays, and indicators. IC Role / Device Role / Timing Role: Level-translating buffer enabling 3.3-V MCU to safely drive 5-V industrial loads via optocoupler or MOSFET gate inputs. Use Value: Input overvoltage tolerance removes level-shifter ICs; SOIC package supports automated optical inspection and reflow soldering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC827APWR | TSSOP-24 package (6.95 mm × 8.3 mm); 1.2-mm max height; same electrical specs and pinout | Better suited for space-constrained PCBs; requires tighter layout clearance due to smaller pad pitch | Select when board area is limited and thermal dissipation via PCB copper is prioritized over SOIC's mechanical robustness |
| SN74LVCH16244ADGGR | 16-bit, dual 8-bit configuration; LVCH series with bus-hold inputs; different pinout and enable structure | Designed for wider data buses; includes input bus-hold to eliminate external pull-ups on unused pins | Choose for new 16-bit designs requiring input stabilization; not drop-in compatible due to pin count and function differences |
Compared with SN74LVC827APWR, the SN74LVC827ADWG4 offers greater mechanical reliability in vibration-prone environments due to SOIC's larger lead form, while SN74LVCH16244ADGGR provides higher channel density and bus-hold functionality at the cost of redesign effort and non-interchangeable pin mapping.
Availability
SN74LVC827ADWG4 is available at Aetrix Electronics and suitable for LED display drivers, telecom infrastructure backplanes, and industrial I/O expanders requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC827ADWG4 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 delivering analog and embedded processing solutions, with over 90 years of innovation in logic, power management, and signal chain technologies.
The SN74LVC827A belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for high-speed, low-power, mixed-voltage interfacing in industrial automation, communications infrastructure, and computing systems.
FAQ
What is the maximum operating temperature range for the SN74LVC827ADWG4?
The SN74LVC827ADWG4 is rated for operation from –40°C to +125°C ambient temperature, fully specified across this range for electrical parameters including propagation delay, output drive, and Ioff leakage. This makes SN74LVC827ADWG4 suitable for under-hood automotive modules, industrial motor drives, and base station equipment where thermal margins are critical.
Does the SN74LVC827ADWG4 support 5-V input signals while powered at 3.3 V?
Yes, the SN74LVC827ADWG4 accepts input voltages up to 5.5 V regardless of VCC level (1.65 V to 3.6 V), enabling seamless interfacing between 5-V legacy logic and modern 3.3-V systems without external level shifters. This capability is explicitly guaranteed in the datasheet's Recommended Operating Conditions table.
How does the dual output-enable (OE1/OE2) structure function in the SN74LVC827ADWG4?
The SN74LVC827ADWG4 uses an AND-gated 3-state control: both OE1 and OE2 must be logic low to enable outputs Y1–Y10. If either OE is high, all outputs enter high-impedance. This allows hierarchical bus control - for example, OE1 for board-level enable and OE2 for subsystem-level gating - enhancing system-level fault containment.
What is the purpose of the Ioff feature in the SN74LVC827ADWG4?
The Ioff feature in SN74LVC827ADWG4 disables all outputs and isolates inputs when VCC = 0 V, preventing damaging current backflow during live insertion, partial power-down, or hot-swap operations. This is critical in modular systems like telecom line cards and server blades where components may be powered independently.
Can the SN74LVC827ADWG4 drive standard TTL loads directly?
Yes, the SN74LVC827ADWG4 delivers ±24 mA per output at 3.3 V, exceeding the ±0.4 mA DC load requirement of standard TTL inputs. At 3.3 V, its VOH (≥2.2 V) and VOL (≤0.4 V) also meet TTL logic thresholds, allowing direct connection to legacy TTL devices without interface circuitry - confirmed by TI's application note SCBA004.
SN74LVC827ADWG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 10
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
SN74LVC827ADWG4 FAQ
1.How can I place an order for SN74LVC827ADWG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC827ADWG4 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 SN74LVC827ADWG4 reliable?
The price and inventory of SN74LVC827ADWG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC827ADWG4 is usually 5 days.
3.What payment methods are accepted for SN74LVC827ADWG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC827ADWG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC827ADWG4?
SN74LVC827ADWG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC827ADWG4 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 SN74LVC827ADWG4?
For technical support, including SN74LVC827ADWG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC827ADWG4 requirements.
6.How does Aetrix verify that SN74LVC827ADWG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC827ADWG4 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 SN74LVC827ADWG4 meets industry standards.
7.What is the process for return or replacement of SN74LVC827ADWG4?
All SN74LVC827ADWG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC827ADWG4, 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 SN74LVC827ADWG4 part is unused and in its original packaging.
Return procedure for SN74LVC827ADWG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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