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Texas Instruments SN74LVC1G19DCK3
- Part No.:
- SN74LVC1G19DCK3
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
SN74LVC1G19DCK3.pdf
- Description:
- 1-OF-2 DECODER/DEMUL
- Quantity:
- Payment:
- Shipping:
Inventory:45,781
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Product details
Overview
SN74LVC1G19DCK3 from Texas Instruments is a single 1-of-2 decoder/demultiplexer in SC-70 (DCK) package, designed for 1.65-V to 5.5-V VCC operation. It buffers input A and routes true (Y0) and complement (Y1) outputs when enable (E) is low, delivering 4 ns max propagation delay at 3.3 V and ±24-mA drive strength-ideal for level-shifting and signal routing in space-constrained portable logic systems.
For engineers reviewing the SN74LVC1G19DCK3 datasheet, SN74LVC1G19DCK3 pinout, SN74LVC1G19DCK3 application, or SN74LVC1G19DCK3 equivalent, key selection criteria include Ioff-enabled partial-power-down support, 5.5-V tolerant inputs, low 10-µA max ICC, and verified 3.3-V/5-V interoperability in mixed-voltage interfaces.
Technical Context
This device implements positive-logic decoding with active-low enable: when E = L, Y0 mirrors A and Y1 inverts A; when E = H, both outputs go high-impedance. Its Ioff circuitry blocks current flow during power-down, enabling safe back-drive prevention in hot-swap or multi-rail systems.
Input voltage tolerance up to 5.5 V allows interfacing with legacy 5-V logic while operating from 1.65–3.3 V supplies. Output ground bounce (VOLP) remains below 0.8 V typical and output undershoot (VOHV) exceeds 2 V typical at 3.3 V, ensuring signal integrity under fast switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - supports dual-supply level translation between 1.8 V, 2.5 V, 3.3 V, and 5 V domains |
| tpd Max | 4 ns at 3.3 V - enables timing-critical routing in high-speed digital control paths |
| IOL/IOH | ±24 mA at 3.3 V - drives multiple LVC/LVT inputs or small capacitive loads without buffering |
| Ioff | <10 µA - isolates powered-down sections to prevent leakage-induced system faults |
| VI Tolerance | Up to 5.5 V - accepts 5-V TTL/CMOS inputs while operating from sub-3.3-V rails |
| ESD Rating | 2000-V HBM - meets industrial-grade robustness requirements without external protection |
Pinout & Package
SN74LVC1G19DCK3 uses the SC-70-6 (DCK) surface-mount package, measuring 2.0 mm × 1.25 mm × 0.9 mm with gull-wing leads. This ultra-compact footprint supports high-density PCB layouts in portable and wearable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - A | Data input | Single-bit address/data source routed to Y0 (true) and Y1 (complement) when enabled |
| 2 - Y0 | True output | Non-inverted replica of A when E = L; high-impedance when E = H |
| 3 - GND | Ground reference | Return path for all internal logic and output current; must be low-inductance connection |
| 4 - Y1 | Complement output | Inverted replica of A when E = L; high-impedance when E = H |
| 5 - E | Active-low enable | Controls output state: low enables decoding, high disables both outputs to Hi-Z |
| 6 - VCC | Power supply | Supplies core logic and output drivers; accepts 1.65–5.5 V with full parameter compliance |
Key Features
| Feature | Design Value |
|---|---|
| Ioff partial-power-down support | Prevents damaging back-current flow when VCC = 0 V, enabling safe insertion into live backplanes |
| 5.5-V tolerant inputs | Allows direct interface with 5-V microcontrollers or sensors without external level shifters |
| Low 10-µA max ICC | Reduces quiescent power in battery-powered systems where standby current is critical |
| ±24-mA output drive at 3.3 V | Drives ≥10 LVC loads or 30-pF trace capacitance without signal degradation |
| Latch-up immunity >100 mA | Meets JESD78 Class II - eliminates risk of destructive latch-up in noisy industrial environments |
Applications
| Portable Power Management | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Enabling/disabling voltage rails or signal paths in handheld medical monitors with dual-voltage subsystems. IC Role / Device Role / Timing Role: Decoder selects between two regulated outputs based on MCU GPIO, acting as a compact rail-control switch. Use Value: Eliminates need for discrete MOSFETs and pull-up resistors, reducing BOM count and board area by >40%. |
Use Scenario: Routing analog sensor data or digital status signals from 5-V industrial transducers to a 3.3-V microcontroller ADC or GPIO. IC Role / Device Role / Timing Role: Level-translating demux ensures clean signal delivery while maintaining timing alignment across voltage domains. Use Value: Achieves <4 ns skew between Y0/Y1 outputs, preserving phase relationship for differential sensing applications. |
| Wearable Display Control | Automotive Body Controller |
|
Use Scenario: Selecting between OLED display segments or backlight driver channels in ultra-thin smartwatches. IC Role / Device Role / Timing Role: Acts as a compact enable distributor, synchronizing segment activation with frame timing pulses. Use Value: SC-70 footprint fits within 2.5-mm board edge clearance, enabling bezel-less mechanical design. |
Use Scenario: Managing diagnostic LED indicators and CAN transceiver enable lines in 12-V automotive body modules. IC Role / Device Role / Timing Role: Provides isolated, glitch-free enable control for safety-critical peripherals during MCU reset sequences. Use Value: Ioff prevents backfeed from 5-V CAN logic into 3.3-V MCU domain during ignition cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar decoder/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G139DCKR | 2-line-to-4-line decoder with dual enable; larger propagation delay (5.5 ns typ at 3.3 V) | Supports 2-bit address decoding instead of 1-bit; requires additional control logic for same function | Choose only if expanding to 4-output routing; not drop-in compatible due to different truth table and pinout |
| NC7SZ19P6X | Same 1-of-2 decode function but lower drive (±8 mA at 3.3 V); no Ioff support | Lacks partial-power-down capability - unsuitable for hot-swap or multi-rail isolation use cases | Select when cost is primary constraint and system never operates with unpowered VCC |
Compared with SN74LVC1G19DCK3, SN74LVC1G139DCKR adds decoding depth at the cost of timing and pin compatibility, while NC7SZ19P6X sacrifices drive strength and Ioff for lower unit cost - making SN74LVC1G19DCK3 the optimal choice for robust, mixed-voltage, space-constrained designs requiring guaranteed isolation.
Availability
SN74LVC1G19DCK3 is available at Aetrix Electronics and suitable for portable power management, industrial sensor interface, wearable display control, and automotive body controller applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for SN74LVC1G19DCK3 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, with over 90 years of innovation in industrial, automotive, and consumer electronics.
The SN74LVC1G19DCK3 belongs to TI's LVC low-voltage CMOS logic family, engineered for interoperability across 1.65–5.5 V supply rails and optimized for signal integrity, power efficiency, and board-space savings in portable and embedded systems.
FAQ
What is the maximum propagation delay of SN74LVC1G19DCK3 at 3.3 V?
The maximum propagation delay (tpd) of SN74LVC1G19DCK3 is 4 ns at VCC = 3.3 V with CL = 15 pF, as specified in the switching characteristics table of the official datasheet SCES464D. This value applies to both A→Y0 and A→Y1 paths under recommended operating conditions and confirms tight timing control for synchronous logic routing.
Does SN74LVC1G19DCK3 support partial-power-down operation?
Yes, SN74LVC1G19DCK3 supports partial-power-down operation via its Ioff feature. When VCC = 0 V, the Ioff circuitry limits input/output leakage current to less than 10 µA, preventing damaging back-current flow from live inputs into the unpowered device - a critical capability for hot-plug and multi-rail system designs.
Can SN74LVC1G19DCK3 accept 5-V input signals while operating at 3.3 V?
Yes, SN74LVC1G19DCK3 accepts input voltages up to 5.5 V regardless of VCC level, enabling direct interfacing with 5-V logic families while powered from 3.3 V. This 5-V tolerance is explicitly guaranteed in the absolute maximum ratings and recommended operating conditions tables of the SCES464D datasheet.
What is the output drive capability of SN74LVC1G19DCK3 at 3.3 V?
At VCC = 3.3 V, SN74LVC1G19DCK3 delivers ±24 mA output drive current (IOL/IOH), sufficient to drive multiple LVC/LVT inputs or moderate capacitive loads. This specification is confirmed in the electrical characteristics table under "Low-level output current" and "High-level output current" test conditions.
Is SN74LVC1G19DCK3 RoHS compliant and lead-free?
Yes, SN74LVC1G19DCK3 is RoHS compliant and lead-free. Per TI's packaging information, the DCK package variant carries a "Green (RoHS & no Sb/Br)" eco plan with CU NIPDAU lead finish and JEDEC MSL Level-1 rating - fully compliant with EU RoHS Directive 2011/65/EU and subsequent amendments.
SN74LVC1G19DCK3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Bulk
- 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:
- SC-70-6
SN74LVC1G19DCK3 FAQ
1.How can I place an order for SN74LVC1G19DCK3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G19DCK3 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 SN74LVC1G19DCK3 reliable?
The price and inventory of SN74LVC1G19DCK3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G19DCK3 is usually 5 days.
3.What payment methods are accepted for SN74LVC1G19DCK3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC1G19DCK3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC1G19DCK3?
SN74LVC1G19DCK3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G19DCK3 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 SN74LVC1G19DCK3?
For technical support, including SN74LVC1G19DCK3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G19DCK3 requirements.
6.How does Aetrix verify that SN74LVC1G19DCK3 is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G19DCK3 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 SN74LVC1G19DCK3 meets industry standards.
7.What is the process for return or replacement of SN74LVC1G19DCK3?
All SN74LVC1G19DCK3 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G19DCK3, 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 SN74LVC1G19DCK3 part is unused and in its original packaging.
Return procedure for SN74LVC1G19DCK3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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