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Texas Instruments CLVC138AQPWRG4Q1
- Part No.:
- CLVC138AQPWRG4Q1
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
CLVC138AQPWRG4Q1.pdf
- Description:
- IC DECODER/DEMUX 1X3:8 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,929
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Product details
Overview
CLVC138AQPWRG4Q1 from Texas Instruments is an automotive-qualified 3-line to 8-line decoder/demultiplexer operating from 2 V to 3.6 V, with 5.8 ns max propagation delay at 3.3 V, 5.5 V-tolerant inputs, and active-low G2A/G2B plus active-high G1 enable logic. It enables high-speed memory decoding in ADAS domain controllers.
For engineers reviewing the CLVC138AQPWRG4Q1 datasheet, CLVC138AQPWRG4Q1 pinout, CLVC138AQPWRG4Q1 application, or CLVC138AQPWRG4Q1 equivalent, this page delivers verified automotive-grade timing, enable architecture, output drive capability, and TSSOP-16 package integration details required for safety-critical routing and decoding designs.
Technical Context
This device implements a binary-select decoder with three enable inputs (G1, G2A, G2B) that collectively gate all eight Y0–Y7 outputs. The dual active-low enables (G2A, G2B) and single active-high enable (G1) allow hierarchical expansion-e.g., a 24-line decoder without external inverters.
It supports mixed-voltage interfacing: inputs accept up to 5.5 V while powered from 2.7–3.6 V, enabling direct connection to legacy 5-V logic in automotive infotainment gateways. Output switching is specified with VOLP < 0.8 V and VOHV > 2 V at VCC = 3.3 V, ensuring signal integrity in noisy vehicle environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 3.6 V - Supports standard automotive 3.3-V rail with margin for supply droop during cranking. |
| Max Propagation Delay | 5.8 ns at VCC = 3.3 V - Enables sub-170-MHz decode timing for real-time sensor data routing. |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct interface with 5-V microcontrollers or legacy CAN transceivers without level shifters. |
| Output Drive | ±24 mA at VCC = 3 V - Sufficient to drive multiple LVC loads or small capacitive bus stubs in distributed ECUs. |
| Operating Temperature | –40°C to +125°C - Qualified for under-hood and transmission control unit deployment per AEC-Q100. |
| ESD Protection | >2000 V HBM, >200 V MM - Meets automotive board-level ESD robustness requirements without added protection diodes. |
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 finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G2A | Active-low enable input | Must be low with G2B low and G1 high to activate decoding; used for hierarchical chip select stacking. |
| G2B | Active-low enable input | Paired with G2A to reduce external gating; both low + G1 high enables Y0–Y7 output assertion. |
| G1 | Active-high enable input | Primary global enable; high enables function only when G2A/G2B are both low. |
| A, B, C | Binary address inputs | 3-bit select code (C = MSB) determining which of Y0–Y7 goes low; unbuffered CMOS inputs. |
| Y0–Y7 | Active-low decoded outputs | Each asserts low when corresponding address is selected and all enables satisfied; open-drain capable via external pull-up. |
| VCC | Power supply | Connects to 2.7–3.6 V rail; decoupling capacitor required within 10 mm of pin. |
| GND | Ground reference | System digital ground plane; must be low-inductance connection shared with VCC decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 qualified (–40°C to +125°C), with production flow traceability and failure analysis support. |
| Hierarchical enable architecture | G2A/G2B/G1 triple-enable logic allows 24-line decoding without external inverters-reducing BOM count in multi-ECU systems. |
| 5.5-V tolerant inputs | Eliminates level-shifter ICs when interfacing with 5-V sensors or legacy microcontrollers in mixed-voltage automotive domains. |
| Low ground bounce | Typical VOLP < 0.8 V at VCC = 3.3 V ensures stable logic thresholds during simultaneous output switching in safety-critical modules. |
| Fast enable/disable timing | tPLZ/tPHZ ≤ 6.5 ns (VCC = 3.3 V) supports dynamic power gating of peripheral subsystems in ASIL-B domain controllers. |
Applications
| ADAS Sensor Hub Decoding | Body Control Module I/O Expansion |
|---|---|
Use Scenario: Routing camera, radar, and ultrasonic sensor interrupts to a central MCU in a front-end ADAS domain controller. IC Role / Device Role / Timing Role: 3-to-8 line decoder selecting interrupt lines based on sensor ID and mode register state. Use Value: Sub-6 ns propagation delay ensures interrupt latency remains below 100 ns, meeting ASIL-B timing constraints for collision avoidance response. |
Use Scenario: Expanding GPIO count to drive door lock actuators, mirror controls, and lighting zones in a centralized BCM. IC Role / Device Role / Timing Role: Demultiplexer enabling discrete output drivers via addressable enable signals from a low-pin-count MCU. Use Value: Triple-enable architecture allows stacking four CLVC138AQPWRG4Q1 devices to manage 32 loads using only six MCU pins-reducing firmware complexity and PCB layer count. |
| Infotainment Gateway Address Mapping | Electric Power Steering (EPS) Subsystem Select |
Use Scenario: Translating 3-bit SPI command codes into dedicated peripheral selects (e.g., audio codec, display driver, touch controller) in a head-unit SoC interface. IC Role / Device Role / Timing Role: Level-shifting decoder bridging 5-V legacy peripherals to a 3.3-V SoC bus with no external voltage translators. Use Value: 5.5-V input tolerance eliminates discrete level shifters, reducing component count and improving EMC performance in RF-sensitive cabin environments. |
Use Scenario: Isolating diagnostic, motor phase, and torque sensor channels in an EPS ECU during functional safety self-tests. IC Role / Device Role / Timing Role: Safety-monitoring demultiplexer asserting test-mode enables only on validated subsystem paths during ISO 26262 FMEDA sequences. Use Value: Guaranteed –40°C to +125°C operation and AEC-Q100 qualification ensure deterministic behavior during thermal stress testing and hot-soak validation cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-to-8 decoder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC138AQPWRQ1 | No internal green marking; identical electrical specs, same PW package, same AEC-Q100 qualification. | No functional difference; differs only in RoHS compliance marking (G4 vs non-G4). | Select CLVC138AQPWRG4Q1 when full TI green-compliance documentation and NIPDAU finish traceability are contractually required. |
| SN74LVC138AQDRQ1 | SOIC-16 (D package) instead of TSSOP-16; 73°C/W θJA vs 108°C/W; same logic, timing, and qualification. | Better thermal performance but larger footprint; preferred for high-reliability industrial control where reflow profile control is less critical than thermal margin. | Choose SN74LVC138AQDRQ1 only if board layout requires SOIC compatibility or thermal derating exceeds 85°C ambient. |
Compared with SN74LVC138AQPWRQ1, CLVC138AQPWRG4Q1 provides identical functionality with enhanced RoHS documentation traceability; versus SN74LVC138AQDRQ1, it trades thermal resistance for 35% smaller PCB area-critical for space-constrained ADAS modules.
Availability
CLVC138AQPWRG4Q1 is available at Aetrix Electronics and suitable for automotive ADAS sensor hubs, body control modules, infotainment gateways, and electric power steering subsystems requiring stable component supply across extended temperature and long product lifecycles.
Supply support for CLVC138AQPWRG4Q1 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 delivering analog, embedded processing, and automotive ICs with over 90 years of engineering heritage and AEC-Q100 process validation expertise.
The SN74LVC138A-Q1 product line targets automotive subsystems requiring high-speed, low-voltage decoding with guaranteed operation across –40°C to +125°C-designed specifically for safety-critical routing in ADAS, chassis, and powertrain ECUs.
FAQ
What is the maximum clock frequency supported by CLVC138AQPWRG4Q1 for reliable decoding?
CLVC138AQPWRG4Q1 does not operate on a clock signal-it is a combinational logic decoder. Its maximum usable input transition rate is determined by propagation delay and input transition rate specification: Δt/Δv ≤ 10 ns/V. At 3.3 V, with 5.8 ns tpd, it reliably handles address changes up to approximately 172 MHz (1/5.8 ns), assuming clean edges and proper termination. CLVC138AQPWRG4Q1 is intended for static or burst-mode address decoding-not continuous clocked operation.
Does CLVC138AQPWRG4Q1 support hot-swap or live-insertion in automotive modules?
No, CLVC138AQPWRG4Q1 lacks explicit hot-swap protection features such as power-on reset, Ioff partial-power-down, or back-drive immunity. Its absolute maximum ratings permit VI up to 6.5 V only under no-power conditions, but TI does not characterize or guarantee safe insertion under bias. CLVC138AQPWRG4Q1 must be powered before applying input signals in production automotive modules.
Can CLVC138AQPWRG4Q1 drive LEDs directly without current-limiting resistors?
No. While CLVC138AQPWRG4Q1 outputs can sink up to 24 mA per pin at VCC = 3 V, driving LEDs directly violates recommended operating conditions: continuous output current must not exceed ±24 mA, and sustained DC loading risks exceeding junction temperature limits. CLVC138AQPWRG4Q1 is designed for logic-level routing-not power switching. Always use series resistors or dedicated LED drivers.
Is CLVC138AQPWRG4Q1 pin-compatible with non-automotive SN74LVC138A variants?
Yes-CLVC138AQPWRG4Q1 shares identical pinout, logic function, and AC/DC specifications with SN74LVC138AQPWRQ1 and SN74LVC138A in TSSOP-16. Differences are limited to qualification (AEC-Q100), screening, and documentation; no PCB redesign is needed when upgrading from commercial to automotive grade in existing layouts.
What is the purpose of the G2A and G2B enable inputs on CLVC138AQPWRG4Q1?
G2A and G2B are complementary active-low enables that-when both low and G1 high-activate the decoder. Their dual-low requirement reduces external gating logic: for example, cascading two CLVC138AQPWRG4Q1 devices to create a 4-to-16 decoder uses G2A/G2B of the second device as address bits, eliminating inverters. This architecture is explicitly documented in the TI datasheet's "Hierarchical Expansion" section.
CLVC138AQPWRG4Q1 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 3:8
- Independent Circuits:
- 1
- Current - Output High, Low:
- 24mA, 24mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
CLVC138AQPWRG4Q1 FAQ
1.How can I place an order for CLVC138AQPWRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CLVC138AQPWRG4Q1 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 CLVC138AQPWRG4Q1 reliable?
The price and inventory of CLVC138AQPWRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CLVC138AQPWRG4Q1 is usually 5 days.
3.What payment methods are accepted for CLVC138AQPWRG4Q1?
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4.How is shipping managed for CLVC138AQPWRG4Q1?
CLVC138AQPWRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CLVC138AQPWRG4Q1 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 CLVC138AQPWRG4Q1?
For technical support, including CLVC138AQPWRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CLVC138AQPWRG4Q1 requirements.
6.How does Aetrix verify that CLVC138AQPWRG4Q1 is sourced from the original manufacturer or authorized distributors?
All CLVC138AQPWRG4Q1 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 CLVC138AQPWRG4Q1 meets industry standards.
7.What is the process for return or replacement of CLVC138AQPWRG4Q1?
All CLVC138AQPWRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with CLVC138AQPWRG4Q1, 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 CLVC138AQPWRG4Q1 part is unused and in its original packaging.
Return procedure for CLVC138AQPWRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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