My Inquiry
My Account
Texas Instruments SN74HC139QPWRG4Q1
- Part No.:
- SN74HC139QPWRG4Q1
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74HC139QPWRG4Q1.pdf
- Description:
- IC DECODER/DEMUX 1X2:4 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,703
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74HC139QPWRG4Q1 from Texas Instruments is an automotive-qualified dual 2-line-to-4-line decoder/demultiplexer in a 16-pin TSSOP package, operating from 2 V to 6 V, with typical propagation delay of 10 ns at 5 V, ±4-mA output drive, and low ICC of 80 µA max - used for high-speed memory decoding and data routing in automotive control modules.
For engineers reviewing the SN74HC139QPWRG4Q1 datasheet, SN74HC139QPWRG4Q1 pinout, SN74HC139QPWRG4Q1 application, or SN74HC139QPWRG4Q1 equivalent, key selection criteria include AEC-Q100 qualification, dual independent enable inputs for cascading, active-low outputs, and compatibility with LSTTL loads in space-constrained automotive PCB layouts.
Technical Context
The SN74HC139QPWRG4Q1 integrates two fully buffered, independent 2-to-4 line decoders sharing no internal logic - each with dedicated active-low enable (1G/2G), address inputs (1A/1B and 2A/2B), and four active-low outputs (1Y0–1Y3 and 2Y0–2Y3). Inputs present only one normalized load to driving circuitry.
It supports demultiplexing via enable-as-data-line operation, features ESD protection per AEC-Q100 (2000-V HBM, 200-V MM, 1000-V CDM), and maintains stable timing across −40°C to +125°C with input transition times as slow as 400 ns at 6 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - enables direct interface with 3.3 V and 5 V logic domains without level shifters. |
| Propagation Delay (tpd) | 10 ns typical at VCC = 5 V, CL = 50 pF - ensures minimal added latency in high-speed memory decode paths. |
| Output Drive Capability | ±4 mA at 5 V - sufficient to directly drive ten LSTTL loads without external buffers. |
| Quiescent Current (ICC) | 80 µA max at 6 V - supports low-power operation in always-on automotive subsystems. |
| Input Leakage Current | 1 µA max - prevents unintended switching from floating inputs in harsh automotive environments. |
| Operating Temperature | −40°C to +125°C - qualified for engine bay, transmission, and ADAS ECU deployment. |
| AEC-Q100 Grade | Grade 1 - certified for automotive applications per stress test requirements including HBM/MM/CDM ESD. |
Pinout & Package
TSSOP-16 (PW) package, 4.4 mm × 5.0 mm footprint, 1.2 mm max height, lead pitch 0.65 mm, RoHS-compliant NiPdAu finish, MSL Level-1 (260°C reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1G, 2G | Active-low enable inputs | Enable/disable respective decoder independently; usable as data lines in demux mode. |
| 1A, 1B / 2A, 2B | Address inputs | Binary-select two bits per decoder to activate one of four outputs (Y0–Y3). |
| 1Y0–1Y3 / 2Y0–2Y3 | Active-low decoded outputs | Each decoder drives exactly one low output per valid address; all high when disabled. |
| VCC (Pin 16) | Positive supply | Power rail for both decoders; must be decoupled locally per automotive layout guidelines. |
| GND (Pin 8) | Ground reference | Common return path; requires low-inductance connection to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent decoders | Enables two separate 2-to-4 decode functions on one die - reduces component count vs. discrete solutions. |
| Active-low enable & outputs | Simplifies interface with microcontroller GPIOs configured as open-drain or active-low control signals. |
| Wide VCC range (2–6 V) | Supports mixed-voltage systems and legacy 5 V designs while maintaining compatibility with modern 3.3 V MCUs. |
| Low input current (≤1 µA) | Minimizes loading on upstream drivers - critical for fan-out-limited automotive signal chains. |
| Buffered inputs | Each input presents only one normalized load - eliminates need for input fan-out buffers in cascaded decode trees. |
Applications
| Automotive Body Control Module | Instrument Cluster Display Multiplexing |
|---|---|
Use Scenario: Selecting among multiple lighting zones (headlights, fog lamps, DRLs) using MCU GPIOs. IC Role / Device Role / Timing Role: Decoder translates 2-bit MCU output into four independent lamp-enable signals. Use Value: Reduces required MCU pins by 66% versus direct drive; enables fast, glitch-free zone activation with <10 ns decode latency. |
Use Scenario: Routing SPI or parallel display data to four segmented LCD drivers in digital dashboards. IC Role / Device Role / Timing Role: Demultiplexer routes common data bus to selected display segment controller via active-low enable-as-data path. Use Value: Eliminates need for four separate data buses; maintains signal integrity with buffered inputs and matched tPHL/tPLH. |
| Engine Control Unit I/O Expansion | ADAS Sensor Interface Selection |
Use Scenario: Expanding limited MCU GPIOs to manage 8+ solenoid or valve drivers in fuel injection systems. IC Role / Device Role / Timing Role: Dual decoder provides eight discrete enable outputs (four per section) with independent gating. Use Value: Enables precise, isolated actuator control with no cross-talk; supports fail-safe disable via individual G inputs. |
Use Scenario: Selecting between radar, camera, and ultrasonic sensor data paths in fusion ECUs. IC Role / Device Role / Timing Role: Decoder selects active sensor interface channel while holding others in high-impedance state. Use Value: Prevents signal contention during sensor handover; meets <15 ns timing budget for real-time ADAS decision loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual decoder/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC139QDRQ1 | Same silicon, SOIC-16 package (7.5 mm × 10.3 mm); higher θJA (73°C/W vs. 108°C/W). | Better thermal performance in high-density layouts; larger footprint limits use in compact ADAS modules. | Choose for legacy board compatibility or where thermal margin >15°C is required. |
| SN74LV139AQPWRG4Q1 | Lower VCC range (1.65–5.5 V); faster tpd (7.5 ns typ at 3.3 V); reduced drive (±6 mA at 3.3 V). | Optimized for 3.3 V-only systems; not suitable for 5 V memory interfaces or mixed-voltage designs. | Choose when targeting ultra-low-power 3.3 V automotive domains with strict timing budgets. |
Compared with SN74HC139QPWRG4Q1, the SOIC variant offers superior thermal dissipation but occupies 2.3× more PCB area, while the LV version improves speed at 3.3 V but sacrifices 5 V interoperability and automotive voltage margin.
Availability
SN74HC139QPWRG4Q1 is available at Aetrix Electronics and suitable for automotive body control, instrument cluster, engine management, and ADAS sensor interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74HC139QPWRG4Q1 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 ICs, with over 50 years of innovation in high-reliability electronics.
The SN74HC139-Q1 belongs to TI's automotive logic portfolio, designed specifically for robust, low-latency signal routing in safety-critical vehicle subsystems under AEC-Q100 stress conditions.
FAQ
What is the maximum operating temperature for SN74HC139QPWRG4Q1?
The SN74HC139QPWRG4Q1 is rated for continuous operation from −40°C to +125°C ambient temperature, meeting AEC-Q100 Grade 1 requirements for under-hood and transmission control applications. Its thermal resistance (θJA) is 108°C/W in the TSSOP-16 package, requiring appropriate copper pour and airflow for sustained 125°C operation.
Does SN74HC139QPWRG4Q1 support 3.3 V logic systems?
Yes, SN74HC139QPWRG4Q1 operates reliably across 2 V to 6 V, making it fully compatible with 3.3 V systems. At VCC = 3.3 V, it delivers ≥3.1 V VOH (IOH = −20 µA) and ≤0.26 V VOL (IOL = 4 mA), ensuring noise margins >0.7 V with standard 3.3 V CMOS inputs.
How does the enable input function in demultiplexing mode for SN74HC139QPWRG4Q1?
In demultiplexing mode, the active-low enable input (1G or 2G) acts as the data line: when held low, the decoder passes the 2-bit address (A/B) to select one of four outputs; when high, all outputs remain high. This allows SN74HC139QPWRG4Q1 to route a single data stream to one of four destinations without additional control logic.
Is SN74HC139QPWRG4Q1 pin-compatible with non-automotive SN74HC139 variants?
No - SN74HC139QPWRG4Q1 shares identical pinout and functionality with SN74HC139QPWRQ1 and SN74HC139QDRQ1, but differs from commercial-grade SN74HC139 in qualification (AEC-Q100), screening, and marking. All TSSOP-16 versions use identical PW package dimensions and pin assignments.
What is the recommended decoupling for SN74HC139QPWRG4Q1 in automotive designs?
TI recommends a minimum 100 nF X7R ceramic capacitor placed within 3 mm of VCC (Pin 16) and GND (Pin 8), plus a 4.7 µF tantalum or polymer capacitor per power domain. For high-frequency noise suppression in CAN or LIN-adjacent layouts, add a 1 nF capacitor in parallel with the 100 nF unit.
SN74HC139QPWRG4Q1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- 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:
- 5.2mA, 5.2mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
SN74HC139QPWRG4Q1 FAQ
1.How can I place an order for SN74HC139QPWRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC139QPWRG4Q1 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 SN74HC139QPWRG4Q1 reliable?
The price and inventory of SN74HC139QPWRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC139QPWRG4Q1 is usually 5 days.
3.What payment methods are accepted for SN74HC139QPWRG4Q1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC139QPWRG4Q1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC139QPWRG4Q1?
SN74HC139QPWRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC139QPWRG4Q1 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 SN74HC139QPWRG4Q1?
For technical support, including SN74HC139QPWRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC139QPWRG4Q1 requirements.
6.How does Aetrix verify that SN74HC139QPWRG4Q1 is sourced from the original manufacturer or authorized distributors?
All SN74HC139QPWRG4Q1 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 SN74HC139QPWRG4Q1 meets industry standards.
7.What is the process for return or replacement of SN74HC139QPWRG4Q1?
All SN74HC139QPWRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC139QPWRG4Q1, 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 SN74HC139QPWRG4Q1 part is unused and in its original packaging.
Return procedure for SN74HC139QPWRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74HC139QPWRG4Q1 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…
