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Texas Instruments SN74LVC1G19DRLR
- Part No.:
- SN74LVC1G19DRLR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- SOT-563, SOT-666
- Datasheet:
-
SN74LVC1G19DRLR.pdf
- Description:
- IC DECODER/DEMUX 1 X 1:2 6SOT
- Quantity:
- Payment:
- Shipping:
Inventory:4,751
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Product details
Overview
SN74LVC1G19 from Texas Instruments is a 1-of-2 decoder/demultiplexer IC operating from 1.65 V to 5.5 V, with active-low enable (E), single address input (A), and dual complementary outputs (Y0, Y1). It delivers ±24-mA output drive at 3.3 V, achieves 4 ns max propagation delay at 3.3 V/15 pF, and supports Ioff for live insertion and partial-power-down protection. It is used in portable audio docks and SSD controller logic to route control signals between host and peripheral interfaces.
For engineers reviewing the SN74LVC1G19 datasheet, SN74LVC1G19 pinout, SN74LVC1G19 application, or SN74LVC1G19 equivalent, this page provides verified functional modes, NanoFree™ SOT-5X3 package details, Ioff-enabled power sequencing behavior, and direct alternatives for low-voltage demuxing in space-constrained embedded systems.
Technical Context
The SN74LVC1G19 implements a combinational 1-bit address decoder with active-low enable: when E = L, Y0 = ¬A and Y1 = A; when E = H, both outputs go high-impedance. Its CMOS design ensures rail-to-rail input tolerance up to 5.5 V independent of VCC, enabling mixed-voltage interfacing.
It features Ioff circuitry that disables outputs during power-off, preventing back-drive current and supporting hot-plug operation. Output ground bounce (VOLP) and VOH undershoot (VOHV) are characterized at 0.8 V and >2 V typical respectively at 3.3 V/25°C, critical for signal integrity in high-speed digital routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - supports single-supply operation across 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 - enables sub-250 MHz clock-domain signal routing |
| Ioff Current | ±10 µA max - guarantees isolation during partial power-down, preventing bus contention |
| Output Drive | ±24 mA at VCC = 3.3 V - sufficient to drive multiple 74LVC inputs or small LED loads without buffering |
| Input Voltage Tolerance | Up to 5.5 V - allows interfacing with 5-V controllers while powered from 1.8-V or 3.3-V rails |
| ICC (max) | 10 µA - ultra-low static power ideal for battery-backed or always-on subsystems |
| ESD Rating | ±2000 V HBM - meets industrial-grade robustness requirements per JESD22-A114 |
Pinout & Package
SOT-5X3 (DRL) package: 1.6 mm × 1.2 mm body, 0.5-mm pitch, 6-pin surface-mount, lead-free/NiPdAu finish, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Address input | Selects active-low output: A = L → Y0 = L; A = H → Y1 = L (when E = L) |
| GND | Ground reference | Return path for all internal logic and output currents; must be low-impedance |
| E | Enable input (active low) | Disables decoding: E = H forces both Y0 and Y1 high-impedance |
| Y1 | Output 1 | Active-low output asserted when A = H and E = L; sinks 24 mA or sources 24 mA |
| VCC | Power supply | Supplies core logic and output drivers; requires local 0.1-µF bypass capacitor |
| Y0 | Output 0 | Active-low output asserted when A = L and E = L; electrically identical to Y1 |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Die-as-package construction reduces footprint to 1.6 mm × 1.2 mm - eliminates bond wires and mold compound for minimal parasitic inductance |
| Ioff support | Enables live insertion and partial-power-down by disabling outputs when VCC = 0 V - prevents back-drive damage in multi-rail systems |
| 5-V tolerant inputs | Accepts 0–5.5 V input signals regardless of VCC setting - simplifies level translation in mixed-voltage designs |
| Low ground bounce | VOLP < 0.8 V typical at 3.3 V - maintains noise margin during simultaneous switching of multiple outputs |
| High-speed switching | 4 ns tpd at 3.3 V/15 pF - supports clean signal routing in USB, PCIe, and SATA auxiliary control paths |
Applications
| Audio Dock Control | SSD Power Sequencing |
|---|---|
Use Scenario: Selecting between two audio codec paths in a portable dock with USB-C host interface. IC Role / Device Role / Timing Role: Decoder routing host command lines to either DAC or ADC enable pins based on mode selection. Use Value: Eliminates need for discrete logic gates; 4 ns delay ensures timing alignment with USB audio frame sync. |
Use Scenario: Enabling standby vs. active power rails in client SSD controller firmware. IC Role / Device Role / Timing Role: Demuxing a single GPIO from the controller to independently control VDDQ and VDDP enable lines. Use Value: Ioff prevents backfeed during sleep mode; ±24-mA drive directly switches load switches without buffer stages. |
| TV HDMI Hot-Plug Detection | Tablet Peripheral Multiplexing |
Use Scenario: Managing HPD (Hot-Plug Detect) signal routing between multiple HDMI source ports and sink controller. IC Role / Device Role / Timing Role: Demultiplexing a shared HPD interrupt line to individual port status registers. Use Value: 5.5-V input tolerance accepts HDMI 5-V HPD signals while powered from 3.3-V SoC rail. |
Use Scenario: Switching between Bluetooth and Wi-Fi module reset lines using a single baseband processor GPIO. IC Role / Device Role / Timing Role: 1-of-2 decoder selecting which wireless IC receives a synchronized reset pulse. Use Value: NanoFree SOT-5X3 footprint saves PCB area in thin tablet form factors; 10-µA ICC extends battery life in idle state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar decoder/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G139DBVR | 2-line-to-4-line decoder; dual enable inputs; 5.5-V tolerant; same SOT-23-6 package | Provides expanded decode capability (2-bit address); higher pin count required for full functionality | Choose when system requires 1-of-4 selection or independent enable control per output pair |
| NC7SZ19P6X | Same 1-of-2 function; 1.65–5.5-V range; ±24-mA drive; SC70-6 package; 5.5-V tolerant inputs | Identical logic behavior and electrical specs; differs only in package (SC70 vs SOT-5X3) and manufacturer | Choose for second-source availability or if SC70 footprint already standardized in layout |
Compared with SN74LVC1G19, SN74LVC1G139DBVR adds decode depth at the cost of increased complexity, while NC7SZ19P6X offers functionally identical performance in an alternate compact package-both avoid redesign when footprint or sourcing flexibility is needed.
Availability
SN74LVC1G19 is available at Aetrix Electronics and suitable for audio docks, SSD controllers, HDMI interface modules, and tablet peripheral management requiring stable component supply across industrial temperature ranges (–40°C to 85°C).
Supply support for SN74LVC1G19 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 over 90 years of innovation in high-reliability, low-power logic and interface solutions.
The SN74LVC1G19 belongs to TI's LVC logic family, designed specifically for low-voltage, high-speed, mixed-signal system interfacing where space, power, and voltage translation are critical constraints.
FAQ
What is the function of the E pin on the SN74LVC1G19?
The E pin is the active-low enable input. When E is low, the SN74LVC1G19 decodes the A input and drives Y0 or Y1 low accordingly. When E is high, both Y0 and Y1 enter high-impedance state. This behavior is confirmed in the Function Table (Table 1) of the SCES464G datasheet and enables controlled signal gating in power-aware systems.
Does the SN74LVC1G19 support 5-V input signals while operating at 1.8 V VCC?
Yes. The SN74LVC1G19 inputs accept voltages up to 5.5 V regardless of VCC level, as specified in the Recommended Operating Conditions table. This 5-V tolerance allows direct interfacing with legacy 5-V controllers while the device runs from a 1.8-V supply - a key feature confirmed in the Features section of the SCES464G datasheet.
What is the maximum output current rating for the SN74LVC1G19?
The SN74LVC1G19 supports ±24 mA output drive per pin at VCC = 3.3 V, with absolute maximum continuous output current rated at ±50 mA per output and ±100 mA total for the device. These values are documented in Section 6.3 (Recommended Operating Conditions) and Section 6.1 (Absolute Maximum Ratings) of the SCES464G datasheet.
How does the Ioff feature work in the SN74LVC1G19?
The Ioff feature disables all outputs when VCC = 0 V, blocking current flow from powered inputs into the unpowered device. This prevents back-drive damage during live insertion or partial power-down. The datasheet specifies Ioff ≤ ±10 µA and confirms its use in hot-swap applications - a requirement explicitly stated in Section 8.3 (Feature Description) and Table 6.5 (Electrical Characteristics).
What package type is used for the SN74LVC1G19DRLR variant?
The SN74LVC1G19DRLR uses the SOT-5X3 (DRL) package: a 6-pin, 1.6 mm × 1.2 mm body size, 0.5-mm pitch surface-mount package with NiPdAu lead finish. This is confirmed in the Device Information table (page 3) and Package Option Addendum (page 13) of the SCES464G datasheet, where DRL is explicitly mapped to SN74LVC1G19DRLR.
SN74LVC1G19DRLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- SOT-563, SOT-666
- 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-5X3
SN74LVC1G19DRLR FAQ
1.How can I place an order for SN74LVC1G19DRLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G19DRLR 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 SN74LVC1G19DRLR reliable?
The price and inventory of SN74LVC1G19DRLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G19DRLR is usually 5 days.
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SN74LVC1G19DRLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G19DRLR 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 SN74LVC1G19DRLR?
For technical support, including SN74LVC1G19DRLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G19DRLR requirements.
6.How does Aetrix verify that SN74LVC1G19DRLR is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G19DRLR 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 SN74LVC1G19DRLR meets industry standards.
7.What is the process for return or replacement of SN74LVC1G19DRLR?
All SN74LVC1G19DRLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G19DRLR, 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 SN74LVC1G19DRLR part is unused and in its original packaging.
Return procedure for SN74LVC1G19DRLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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