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Texas Instruments SN74LVC1G19DBVT
- Part No.:
- SN74LVC1G19DBVT
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- SOT-23-6
- Datasheet:
-
SN74LVC1G19DBVT.pdf
- Description:
- IC DECODER/DEMUX 1X1:2 SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:772
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Product details
Overview
SN74LVC1G19DBVT from Texas Instruments is a single 1-of-2 decoder/demultiplexer in SOT-23-6 package, operating from 1.65 V to 5.5 V supply, delivering ±24 mA output drive at 3.3 V, with maximum propagation delay of 4 ns at 3.3 V and 15 pF load, used for address decoding and signal routing in portable audio docks and SSD power controllers.
For engineers reviewing the SN74LVC1G19DBVT datasheet, SN74LVC1G19DBVT pinout, SN74LVC1G19DBVT application, or SN74LVC1G19DBVT equivalent, key selection criteria include Ioff-enabled partial-power-down support, 5.5 V-tolerant inputs, low ICC (≤10 µA), NanoFree™ package footprint, and verified 1.65–5.5 V VCC compatibility across industrial temperature range.
Technical Context
The SN74LVC1G19DBVT implements active-low enable (E) control with 1-bit address input (A) to select between two complementary outputs (Y0, Y1), where only one output goes low per valid decode cycle. Its CMOS design ensures rail-to-rail output swing and balanced rise/fall times under 3.3 V operation.
It features Ioff circuitry that disables outputs during power-down to prevent back-drive current, supports live insertion, and maintains isolation when VCC = 0 V. Input tolerance up to 5.5 V enables interfacing with higher-voltage logic without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - Enables direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains. |
| tpd (max) | 4 ns at VCC = 3.3 V, CL = 15 pF - Supports high-speed address decoding in timing-critical subsystems. |
| IOL / IOH | ±24 mA at VCC = 3.3 V - Drives multiple standard CMOS loads or small-signal MOSFET gates directly. |
| ICC (max) | 10 µA - Enables ultra-low static power in battery-powered portable devices like MP3 players and tablets. |
| Ioff Support | Yes - Prevents damaging current flow during partial power-down, critical for hot-pluggable modules and SSD controller power sequencing. |
| Input Voltage Tolerance | Up to 5.5 V - Allows connection to 5 V buses while powered from lower VCC, eliminating external level translators. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial and consumer embedded applications including AV receivers and HDTVs. |
Pinout & Package
SOT-23-6 package (DBV): 2.9 mm × 1.6 mm body, 0.95 mm height, gull-wing leads, JEDEC MO-178AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Address input | Selects Y0 (A = L) or Y1 (A = H) when E is active low; accepts up to 5.5 V regardless of VCC. |
| GND | Ground reference | Return path for all internal logic and output currents; must be low-impedance for stable VOLP/VOHV performance. |
| E | Enable input | Active-low control: E = L enables decoding; E = H forces both Y0 and Y1 high (high-impedance disabled state). |
| Y1 | Output 1 | Asserts logic low when A = H and E = L; otherwise high or high-impedance depending on enable state. |
| VCC | Power supply | Supplies core logic and output drivers; requires local 0.1 µF bypass capacitor per TI layout guidelines. |
| Y0 | Output 0 | Asserts logic low when A = L and E = L; complements Y1 behavior in decode mode. |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Bare-die SOT-23-6 form factor (2.9 mm × 1.6 mm) reduces board area by >30% vs. standard SOIC, ideal for space-constrained portable designs. |
| Ioff protection | Enables safe partial-power-down operation: outputs enter high-impedance state when VCC = 0 V, blocking back-drive current in multi-rail systems. |
| 5.5 V-tolerant inputs | Allows direct connection to legacy 5 V logic without external voltage translation, simplifying BOM and reducing signal integrity risk. |
| Low ground bounce | VOLP < 0.8 V typical at VCC = 3.3 V - Minimizes noise coupling into shared ground planes in dense mixed-signal layouts. |
| High noise immunity | VIH ≥ 0.7×VCC and VIL ≤ 0.3×VCC across full VCC range - Ensures robust switching margins in electrically noisy environments like AV receivers. |
Applications
| AV Receiver Signal Routing | SSD Power Controller Interface |
|---|---|
|
Use Scenario: Selecting between two audio source paths (e.g., HDMI ARC vs. optical SPDIF) based on system configuration register bits. IC Role / Device Role / Timing Role: 1-of-2 demultiplexer enabling/disabling analog switch control lines under microcontroller command. Use Value: Eliminates need for discrete logic gates or larger decoder ICs, saving PCB area and reducing propagation delay in real-time audio path selection. |
Use Scenario: Routing enable signals to dual DC-DC converter rails (e.g., VDDQ and VCC for NAND flash) in client SSDs. IC Role / Device Role / Timing Role: Address decoder translating single MCU GPIO into independent power rail controls with precise sequencing. Use Value: Leverages Ioff to isolate converters during firmware-initiated power-down, preventing cross-rail leakage and ensuring clean power state transitions. |
| Portable Audio Dock Logic | Tablet Peripheral Multiplexing |
|
Use Scenario: Managing USB-C alternate mode selection (DisplayPort vs. USB3 data) in compact docking stations. IC Role / Device Role / Timing Role: Demultiplexer driving level-shifter enable pins based on host negotiation status. Use Value: 5.5 V-tolerant inputs accept USB PD controller signaling directly; 4 ns tpd ensures sub-microsecond mode switching latency. |
Use Scenario: Sharing a single I²C bus between touch controller and ambient light sensor in enterprise tablets. IC Role / Device Role / Timing Role: Output-select decoder enabling one sensor interface at a time to avoid bus contention. Use Value: ±24 mA drive strength sustains signal integrity over longer flex traces; low ICC extends battery life during sensor polling cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 1-of-2 decoder/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G139DBVT | Dual 1-of-2 decoder in same SOT-23-6 package; includes dual independent enable inputs (1E, 2E); slightly higher ICC (20 µA max). | Supports independent control of two decode paths; not suitable when single shared enable is required. | Choose when system needs two isolated decode functions with separate enables; retains same footprint and voltage compatibility. |
| 74LVC1G19GW,125 | NXP variant in SC-70-6 package (2.0 mm × 1.25 mm); identical logic function and electrical specs; different marking and MSL rating (Level-1 vs Level-1-260C-UNLIM). | Smaller footprint but incompatible pinout; requires PCB redesign; same industrial temp range and Ioff support. | Choose only if board space is more critical than layout reuse; verify reflow profile compatibility due to differing thermal metrics. |
Compared with SN74LVC1G19DBVT, SN74LVC1G139DBVT adds functional redundancy at no board area cost, while 74LVC1G19GW,125 trades pin compatibility for miniaturization-neither offers drop-in replacement capability without validation.
Availability
SN74LVC1G19DBVT is available at Aetrix Electronics and suitable for AV receivers, solid-state drives, portable audio docks, and enterprise tablets requiring stable component supply across industrial temperature range and long product lifecycles.
Supply support for SN74LVC1G19DBVT 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 company specializing in analog and embedded processing technologies, with leadership in logic, power management, and signal chain solutions.
The SN74LVC1G19DBVT belongs to TI's LVC low-voltage CMOS logic family, designed for high-speed, low-power, mixed-voltage interface applications in portable, industrial, and consumer electronics.
FAQ
What is the maximum propagation delay of the SN74LVC1G19DBVT at 3.3 V?
The SN74LVC1G19DBVT has a maximum propagation delay (tpd) of 4 ns at VCC = 3.3 V with CL = 15 pF, as specified in the switching characteristics table. This value is measured from input transition (A or E) to corresponding output transition (Y0 or Y1) under standard test conditions defined in the datasheet.
Does the SN74LVC1G19DBVT support partial power-down operation?
Yes, the SN74LVC1G19DBVT fully supports partial power-down via its Ioff feature. When VCC = 0 V, the outputs enter high-impedance state and block current backflow, enabling safe live insertion and multi-rail system power sequencing without risk of damage.
Can the SN74LVC1G19DBVT inputs tolerate 5 V when powered from 1.8 V?
Yes, the SN74LVC1G19DBVT inputs are 5.5 V tolerant regardless of VCC level. When powered from 1.8 V, inputs A and E can safely accept up to 5.5 V signals, eliminating the need for external level-shifting circuitry in mixed-voltage systems.
What is the output drive capability of the SN74LVC1G19DBVT at 3.3 V?
At VCC = 3.3 V, the SN74LVC1G19DBVT provides ±24 mA output drive (IOL = 24 mA, IOH = –24 mA), sufficient to drive multiple 74LVC inputs or small-signal MOSFET gates directly without buffer amplification.
Which package type does the SN74LVC1G19DBVT use, and what are its dimensions?
The SN74LVC1G19DBVT uses the SOT-23-6 (DBV) package with nominal body dimensions of 2.9 mm × 1.6 mm and thickness of 0.95 mm. It complies with JEDEC MO-178AC and features gull-wing leads for standard surface-mount assembly.
SN74LVC1G19DBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Decoder/Demultiplexer
- Circuit:
- 1 x 1:2
- Independent Circuits:
- 1
- Current - Output High, Low:
- 32mA, 32mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
SN74LVC1G19DBVT FAQ
1.How can I place an order for SN74LVC1G19DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G19DBVT 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 SN74LVC1G19DBVT reliable?
The price and inventory of SN74LVC1G19DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G19DBVT is usually 5 days.
3.What payment methods are accepted for SN74LVC1G19DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC1G19DBVT transactions.
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4.How is shipping managed for SN74LVC1G19DBVT?
SN74LVC1G19DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G19DBVT 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 SN74LVC1G19DBVT?
For technical support, including SN74LVC1G19DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G19DBVT requirements.
6.How does Aetrix verify that SN74LVC1G19DBVT is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G19DBVT 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 SN74LVC1G19DBVT meets industry standards.
7.What is the process for return or replacement of SN74LVC1G19DBVT?
All SN74LVC1G19DBVT units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G19DBVT, 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 SN74LVC1G19DBVT part is unused and in its original packaging.
Return procedure for SN74LVC1G19DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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