My Inquiry
My Account
Texas Instruments SN74AUC1G19DCKT
- Part No.:
- SN74AUC1G19DCKT
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
SN74AUC1G19DCKT.pdf
- Description:
- IC DECODER/DEMUX 1X1:2 SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,250
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74AUC1G19DCKT from Texas Instruments is a single 1-of-2 decoder/demultiplexer optimized for 1.65–1.95 V operation, delivering ±8 mA output drive at 1.8 V, 3 ns max propagation delay, and Ioff-enabled partial-power-down protection. It routes buffered input A to true (Y0) and complemented (Y1) outputs when enable (E) is low-used in portable audio, SSD power sequencing, and embedded PC I/O expansion.
For engineers reviewing the SN74AUC1G19DCKT datasheet, SN74AUC1G19DCKT pinout, SN74AUC1G19DCKT application, or SN74AUC1G19DCKT equivalent, key selection criteria include sub-1-V operability, 3.6-V I/O tolerance for mixed-voltage interfacing, latch-up immunity >100 mA, and SC70-6 package compatibility with high-density portable layouts.
Technical Context
This device implements positive-logic decoding with active-low enable: when E = L, Y0 = A and Y1 = Ā; when E = H, both outputs enter high-impedance state. Its Ioff circuitry blocks current flow between powered and unpowered rails, enabling safe back-drive prevention during partial power-down.
Designed for ultra-low-voltage operation (0.8–2.7 V VCC), it maintains full functionality across 1.65–1.95 V-its target range-with guaranteed 3 ns tpd at 1.8 V/CL = 15 pF and 10 µA max ICC. ESD robustness includes 2000-V HBM, 200-V MM, and 1000-V CDM ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V - supports sub-1-V logic domains and mixed-mode 1.8/3.3-V system interfacing |
| tpd (max) | 3 ns at 1.8 V, CL = 15 pF - enables timing-critical signal routing in high-speed portable interfaces |
| Output Drive | ±8 mA at 1.8 V - sufficient to drive multiple CMOS inputs or small capacitive loads without buffering |
| Ioff Current | ±10 µA max - ensures no damaging back-current during partial power-down of connected subsystems |
| ESD Rating (HBM) | 2000 V - meets industrial handling requirements without additional board-level protection |
| ICC (max) | 10 µA - enables always-on control logic in battery-powered devices with negligible quiescent drain |
Pinout & Package
SN74AUC1G19DCKT uses the SC70-6 (DCK) package: 2.00 mm × 1.25 mm body, 0.65 mm pitch, 1.1 mm max height, JEDEC MO-203 AB compliant. Pin 1 (A) is located in quadrant Q3 per tape orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Data input | Buffered input signal routed to Y0 (true) and Y1 (complement) when E is asserted |
| E | Active-low enable | Controls output state: low enables decoding; high forces Y0/Y1 into high-Z |
| GND | Ground reference | Return path for all internal logic and output currents; must be low-impedance |
| VCC | Positive supply | Power rail for core logic and output drivers; tolerant up to 3.6 V for I/O level shifting |
| Y0 | True output | Non-inverted replica of A when E = L; high-impedance when E = H |
| Y1 | Complemented output | Inverted replica of A when E = L; high-impedance when E = H |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Dies-as-package construction reduces footprint to 2.00 mm × 1.25 mm-ideal for space-constrained portable PCBs |
| Ioff partial-power-down support | Prevents current backflow between powered/unpowered sections, eliminating need for external isolation switches |
| 3.6-V I/O tolerance | Allows direct connection to 3.3-V or 2.5-V buses while operating from 1.8-V supply-no level shifters required |
| Sub-1-V operability | Functional down to 0.8 V VCC-enables integration into emerging ultra-low-power microcontroller subsystems |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II-ensures reliability in noisy power environments like audio amplifiers or SSD controllers |
Applications
| Portable Audio Power Sequencing | Embedded PC I/O Expansion |
|---|---|
Use Scenario: Managing power-up order of DAC, amplifier, and codec ICs in MP3 players and wireless headsets. IC Role / Device Role / Timing Role: Decoder controls enable signals to discrete power rails based on host controller GPIO states. Use Value: Eliminates discrete logic gates and reduces BOM count while ensuring strict voltage-rail ramp timing compliance. |
Use Scenario: Expanding limited GPIO count on low-pin-count embedded processors for peripheral selection. IC Role / Device Role / Timing Role: Demux routes one control line to select among two I²C peripherals or SPI slaves. Use Value: Adds 2-way peripheral addressing with <3 ns propagation delay-no timing penalty in real-time sensor polling loops. |
| Solid State Drive (SSD) Controller Interface | AV Receiver Signal Routing |
Use Scenario: Isolating standby vs. active mode for NAND flash power supplies and DRAM buffers in client SSDs. IC Role / Device Role / Timing Role: Enables/disables voltage regulators via Y0/Y1 outputs synchronized to host sleep/wake commands. Use Value: Ioff prevents leakage paths during deep-sleep states, extending battery life in portable SSD enclosures. |
Use Scenario: Selecting between HDMI and analog audio output paths in compact AV receivers and soundbars. IC Role / Device Role / Timing Role: Decodes user interface commands to assert true/complement enable lines for dual-path analog switches. Use Value: Dual-output architecture avoids external inverters-reducing component count and layout area in thermally constrained chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar decoder/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G19DCKT | Wider VCC range (1.65–5.5 V); higher tpd (4.5 ns @ 3.3 V); no sub-1-V operation | Better suited for 3.3-V-only systems; lacks Ioff and 2000-V HBM rating | Choose when legacy 3.3-V compatibility outweighs ultra-low-voltage needs and ESD robustness |
| NC7SZ19P5X | Smaller SOT-353 (5-pin) package; identical 1.65–1.95 V target range; 3.5 ns tpd @ 1.8 V | Single-supply only (no 3.6-V I/O tolerance); lower ESD rating (1500-V HBM) | Prefer when board space is more critical than mixed-voltage interoperability or industrial-grade ESD margin |
Compared with SN74LVC1G19DCKT and NC7SZ19P5X, SN74AUC1G19DCKT uniquely combines sub-1-V operation, 3.6-V I/O tolerance, and 2000-V HBM-making it optimal for next-gen portable electronics requiring both ultra-low power and robust mixed-signal interfacing.
Availability
SN74AUC1G19DCKT is available at Aetrix Electronics and suitable for portable audio, SSD power management, and embedded PC I/O expansion requiring stable component supply across long-lifecycle consumer and industrial programs.
Supply support for SN74AUC1G19DCKT 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 50 years of innovation in high-reliability, low-power IC design.
SN74AUC1G19DCKT belongs to TI's AUC Sub-1-V Little Logic family-engineered specifically for ultra-low-voltage portable and battery-powered applications demanding minimal power, small footprint, and robust mixed-signal interfacing.
FAQ
What is the recommended operating voltage range for SN74AUC1G19DCKT?
The SN74AUC1G19DCKT is fully specified for 1.65 V to 1.95 V VCC operation, though it remains functional from 0.8 V to 2.7 V. For guaranteed timing and drive performance-including 3 ns max tpd and ±8 mA output-the 1.65–1.95 V range must be used. Operation outside this window may degrade noise margins or output strength.
Does SN74AUC1G19DCKT support partial-power-down mode?
Yes, SN74AUC1G19DCKT includes Ioff circuitry that disables outputs and limits off-state current to ±10 µA when VCC = 0 V. This prevents damaging current backflow between powered and unpowered sections-critical in multi-rail portable systems where subsystems power up/down independently.
What package type is used by SN74AUC1G19DCKT?
SN74AUC1G19DCKT uses the SC70-6 (DCK) package: 2.00 mm × 1.25 mm body size, 0.65 mm lead pitch, and 1.1 mm maximum height. It complies with JEDEC MO-203 variation AB and features quadrant Q3 pin-1 orientation on tape-and-reel.
Can SN74AUC1G19DCKT interface with 3.3-V logic despite its 1.8-V supply?
Yes, SN74AUC1G19DCKT has 3.6-V I/O tolerance on all pins. When powered from 1.8 V, its inputs accept 0–3.6 V signals and outputs drive up to 3.6 V-enabling direct connection to 3.3-V buses without level shifters, simplifying mixed-voltage designs in portable audio and SSD controllers.
What is the function of the E (enable) pin on SN74AUC1G19DCKT?
The E pin on SN74AUC1G19DCKT is an active-low enable. When E = L, the device decodes input A to Y0 (A) and Y1 (Ā). When E = H, both Y0 and Y1 enter high-impedance state-effectively disconnecting downstream circuitry. This enables dynamic signal routing and power gating in real-time control applications.
SN74AUC1G19DCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUC
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Decoder/Demultiplexer
- Circuit:
- 1 x 1:2
- Independent Circuits:
- 1
- Current - Output High, Low:
- 9mA, 9mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 0.8V ~ 2.7V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
SN74AUC1G19DCKT FAQ
1.How can I place an order for SN74AUC1G19DCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC1G19DCKT 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 SN74AUC1G19DCKT reliable?
The price and inventory of SN74AUC1G19DCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC1G19DCKT is usually 5 days.
3.What payment methods are accepted for SN74AUC1G19DCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AUC1G19DCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AUC1G19DCKT?
SN74AUC1G19DCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC1G19DCKT 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 SN74AUC1G19DCKT?
For technical support, including SN74AUC1G19DCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC1G19DCKT requirements.
6.How does Aetrix verify that SN74AUC1G19DCKT is sourced from the original manufacturer or authorized distributors?
All SN74AUC1G19DCKT 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 SN74AUC1G19DCKT meets industry standards.
7.What is the process for return or replacement of SN74AUC1G19DCKT?
All SN74AUC1G19DCKT units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC1G19DCKT, 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 SN74AUC1G19DCKT part is unused and in its original packaging.
Return procedure for SN74AUC1G19DCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74AUC1G19DCKT Tags
-
SN74HC138DR
Texas Instruments
-
TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
-
74CBTLV3257PW,118
Nexperia USA Inc.
-
SN74CBTLV3257PWR
Texas Instruments
-
74CBTLV3257GUX
Nexperia USA Inc.
-
74HC154BQ,118
Nexperia USA Inc.
-
P3S0200GMX
NXP USA Inc.
-
SN74CB3Q3245PWR
Texas Instruments
-
SN74CB3Q3257RGYR
Texas Instruments
-
TCA9543APWR
Texas Instruments
-
TCA9546APWR
Texas Instruments
-
SN74HC138N
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
