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Texas Instruments SN74LVC139AQPWRQ1
- Part No.:
- SN74LVC139AQPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVC139AQPWRQ1.pdf
- Description:
- IC DECODER/DEMUX 1X2:4 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:355
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Product details
Overview
SN74LVC139AQPWRQ1 from Texas Instruments is an automotive-qualified dual 2-line-to-4-line decoder/demultiplexer operating from 1.65 V to 3.6 V, with 5.5-V-tolerant inputs, 6.2-ns max propagation delay at 3.3 V, and AEC-Q100 qualification for −40°C to 125°C operation. It enables mixed-voltage signal routing in body control modules and ADAS domain controllers.
For engineers reviewing the SN74LVC139AQPWRQ1 datasheet, SN74LVC139AQPWRQ1 pinout, SN74LVC139AQPWRQ1 application, or SN74LVC139AQPWRQ1 equivalent, key selection criteria include its dual-decoder architecture, 5.5-V input tolerance for level translation, automotive temperature range, TSSOP-16 package footprint, and latch-up immunity exceeding 250 mA per JESD17.
Technical Context
This device integrates two independent 2-to-4 line decoders in one monolithic IC. Each decoder features active-low enable (G) and fully buffered inputs, supporting demultiplexing by using G as a data input while A/B select lines route the signal across four outputs (Y0–Y3).
Its logic operates under positive logic convention with inverted outputs: all Y outputs are high when G is high (disabled), and only one Y output goes low per unique A/B combination when G is low. Input voltage tolerance up to 5.5 V allows direct interfacing with legacy 5-V logic without external level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - Enables use in modern low-voltage automotive domains (e.g., 1.8-V or 3.3-V power rails) while maintaining compatibility with older 2.5-V systems. |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct connection to 5-V microcontrollers or sensors without level-shifting circuitry, reducing BOM count and board space. |
| Max Propagation Delay | 6.2 ns at VCC = 3.3 V - Supports timing-critical decoding in real-time vehicle subsystems such as lighting sequencing or sensor multiplexing. |
| Output Drive Strength | IOL = 24 mA / IOH = −24 mA at VCC = 3.0 V - Sufficient to directly drive LEDs, small logic loads, or enable downstream buffers without external amplification. |
| ESD Protection | HBM 2000 V, MM 200 V, CDM 1000 V - Meets AEC-Q100 stress test requirements for robustness in manufacturing and field environments. |
| Latch-Up Immunity | >250 mA per JESD17 - Ensures resilience against transient current faults common in automotive power domains with noisy ground returns. |
Pinout & Package
TSSOP-16 package (PW), 4.4 mm × 5.0 mm body, 0.65 mm pitch, 1.2 mm max height, RoHS-compliant NiPdAu lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1G, 2G | Active-low enable input (per decoder) | When low, enables corresponding decoder; when high, forces all Y outputs high - used for gating or demux data path selection. |
| 1A, 1B, 2A, 2B | Binary address inputs | Two-bit select lines per decoder determining which of four outputs (Y0–Y3) goes low; fully buffered for minimal loading on driving sources. |
| 1Y0–1Y3, 2Y0–2Y3 | Active-low decoded outputs | Each decoder drives four mutually exclusive low-active outputs; no internal pull-ups - requires external pull-up if open-drain behavior is needed. |
| 16 (VCC), 8 (GND) | Power supply terminals | Single-supply operation; decoupling capacitor placement near Pin 16 is critical for noise suppression in automotive EMI environments. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent decoders | Enables parallel address decoding for two separate subsystems (e.g., left/right mirror controls) within one compact footprint. |
| 5.5-V tolerant inputs | Eliminates need for discrete level translators when interfacing with 5-V CAN transceivers or legacy MCU GPIOs in mixed-voltage ECUs. |
| AEC-Q100 Grade 1 qualified | Validated for −40°C to +125°C operation with full electrical testing across temperature, ensuring reliability in engine bay and chassis-mounted modules. |
| Low dynamic ground bounce (VOLP < 0.8 V) | Mitigates switching noise coupling into analog sensor paths or RF receivers in proximity on shared PCB layers. |
| High noise immunity (VIH/VIL thresholds scale with VCC) | Input thresholds adapt to supply voltage (e.g., VIH = 0.65×VCC at 1.65 V), preserving noise margin across wide VCC operating range. |
Applications
| Body Control Module (BCM) | ADAS Domain Controller |
|---|---|
|
Use Scenario: Selecting between four LED driver channels for sequential turn-signal activation. IC Role / Device Role / Timing Role: Dual decoder routes microcontroller GPIO states to individual LED enable lines with precise timing control. Use Value: Reduces required MCU GPIO count by 50% versus discrete enable lines; 6.2-ns delay ensures synchronized flash timing across all four channels. |
Use Scenario: Routing diagnostic signals from multiple radar sensors to a single CAN FD interface controller. IC Role / Device Role / Timing Role: Demultiplexer selects active sensor channel based on host command, enabling time-shared bus access. Use Value: 5.5-V input tolerance allows direct connection to 5-V radar sensor outputs; AEC-Q100 qualification ensures operation in harsh under-hood conditions. |
| Instrument Cluster Display | Electric Power Steering (EPS) |
|
Use Scenario: Enabling one of four backlight segments for segmented LCD display illumination. IC Role / Device Role / Timing Role: Decoder interprets 2-bit brightness mode register value to activate corresponding segment driver. Use Value: 24-mA sink capability drives LED strings directly; low VOLP minimizes crosstalk into adjacent analog display bias lines. |
Use Scenario: Selecting between four motor phase current sense amplifier outputs for ADC sampling. IC Role / Device Role / Timing Role: Dual decoder alternately connects sense nodes to shared analog front-end, reducing component count. Use Value: Latch-up immunity >250 mA protects against fault currents during EPS motor stall events; TSSOP-16 fits tight layout constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 2-to-4 line decoder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LV139AQPWRQ1 | Lower VCC range (1.0 V to 5.5 V); higher max tpd (10.5 ns at 3.3 V); same pinout and AEC-Q100 Grade 1 rating. | Better suited for ultra-low-voltage domains (e.g., 1.2-V logic rails); less suitable for sub-7-ns timing-critical paths. | Select SN74LV139AQPWRQ1 only if system VCC may drop below 1.65 V or if lower static current (ICC = 2 µA typical) is prioritized over speed. |
| 74AHC139PW,118 | Wider VCC range (2.0 V to 5.5 V); faster tpd (4.4 ns at 4.5 V); non-automotive grade (industrial temp only); different pinout (SO16 vs TSSOP16). | Not AEC-Q100 qualified; unsuitable for safety-critical automotive functions; requires PCB redesign due to SOIC vs TSSOP footprint mismatch. | Choose 74AHC139PW,118 only for non-automotive industrial designs where speed outweighs qualification and footprint constraints. |
Compared with SN74LV139AQPWRQ1, the SN74LVC139AQPWRQ1 delivers tighter timing control and guaranteed 1.65-V startup but sacrifices sub-1.65-V operation; versus 74AHC139PW,118, it trades raw speed for automotive qualification and drop-in TSSOP-16 compatibility in production ECUs.
Availability
SN74LVC139AQPWRQ1 is available at Aetrix Electronics and suitable for automotive body electronics, ADAS sensor interfaces, and instrument cluster subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC139AQPWRQ1 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 automotive-grade silicon solutions with decades of automotive qualification expertise.
The SN74LVC139AQPWRQ1 belongs to TI's LVC logic family designed specifically for low-voltage, high-noise-immunity automotive signal routing - balancing speed, power efficiency, and AEC-Q100 compliance in space-constrained ECUs.
FAQ
What is the operating temperature range for SN74LVC139AQPWRQ1?
The SN74LVC139AQPWRQ1 is qualified for −40°C to +125°C operation per AEC-Q100 Grade 1 requirements. This range covers under-hood, chassis-mounted, and cabin-integrated automotive applications where ambient thermal extremes occur. All electrical specifications in the datasheet are validated across this full range, not just at room temperature.
Does SN74LVC139AQPWRQ1 support 5-V input signals while powered from a 3.3-V rail?
Yes, SN74LVC139AQPWRQ1 accepts input voltages up to 5.5 V regardless of VCC level (1.65 V to 3.6 V). This allows direct interfacing with 5-V microcontrollers or sensors without external level shifters - a key feature confirmed in the "Inputs Accept Voltages to 5.5 V" specification and verified in the recommended operating conditions table.
Is SN74LVC139AQPWRQ1 pin-compatible with the commercial-grade SN74LVC139A?
Yes, SN74LVC139AQPWRQ1 shares identical pinout, functionality, and AC/DC specifications with the catalog SN74LVC139A, differing only in AEC-Q100 qualification, extended temperature screening, and automotive-specific reliability testing. The TSSOP-16 footprint and logic behavior are fully interchangeable in design.
What is the maximum output drive capability of SN74LVC139AQPWRQ1?
SN74LVC139AQPWRQ1 provides ±24 mA output drive at VCC = 3.0 V (IOL = 24 mA, IOH = −24 mA), as specified in the recommended operating conditions table. This supports direct driving of LEDs, small logic loads, or gate inputs without external buffers - verified across −40°C to 125°C.
How does the enable input (G) function in demultiplexing mode for SN74LVC139AQPWRQ1?
In demultiplexing mode, the active-low G input acts as the data line: when G toggles while A/B remain fixed, the selected Y output mirrors G's state (low when G is low, high when G is high). This behavior is explicitly defined in the function table and logic diagram, enabling 1-to-4 signal distribution using only three control lines.
SN74LVC139AQPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Decoder/Demultiplexer
- Circuit:
- 1 x 2:4
- Independent Circuits:
- 2
- Current - Output High, Low:
- 24mA, 24mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
SN74LVC139AQPWRQ1 FAQ
1.How can I place an order for SN74LVC139AQPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC139AQPWRQ1 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 SN74LVC139AQPWRQ1 reliable?
The price and inventory of SN74LVC139AQPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC139AQPWRQ1 is usually 5 days.
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SN74LVC139AQPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC139AQPWRQ1 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 SN74LVC139AQPWRQ1?
For technical support, including SN74LVC139AQPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC139AQPWRQ1 requirements.
6.How does Aetrix verify that SN74LVC139AQPWRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74LVC139AQPWRQ1 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 SN74LVC139AQPWRQ1 meets industry standards.
7.What is the process for return or replacement of SN74LVC139AQPWRQ1?
All SN74LVC139AQPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC139AQPWRQ1, 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 SN74LVC139AQPWRQ1 part is unused and in its original packaging.
Return procedure for SN74LVC139AQPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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