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NXP Semiconductors 74LV139PW,112
- Part No.:
- 74LV139PW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LV139PW,112.pdf
- Description:
- IC DECODER/DEMUX 1X2:4 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,400
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Product details
Overview
74LV139PW,112 from NXP Semiconductors is a dual 2-to-4 line decoder/demultiplexer in TSSOP16 package, operating from 1.0 V to 5.5 V supply, with active LOW enable inputs and mutually exclusive LOW-active outputs. It supports TTL-level inputs at VCC = 2.7–3.6 V and delivers propagation delays as low as 10 ns (VCC = 3.3 V, CL = 15 pF), enabling use in address decoding for microcontroller peripherals and memory-mapped I/O expansion.
For engineers reviewing the 74LV139PW,112 datasheet, 74LV139PW,112 pinout, 74LV139PW,112 application, or 74LV139PW,112 equivalent, key selection criteria include its wide voltage range (1.0–5.5 V), −40 °C to +125 °C industrial temperature rating, TSSOP16 footprint compatibility with space-constrained PCBs, and functional equivalence to 74HC139/74HCT139 while optimized for low-voltage operation.
Technical Context
The 74LV139PW,112 integrates two independent CMOS decoders, each accepting two binary address inputs (nA0, nA1) and driving four LOW-active outputs (nY0–nY3). Each decoder features a dedicated active LOW enable (nE); when nE is HIGH, all outputs are forced HIGH-enabling use as a 1-to-4 demultiplexer by routing data through nE.
Its Si-gate CMOS architecture ensures TTL input level compatibility at 2.7–3.6 V, ground bounce < 0.8 V (VCC = 3.3 V), and VOH undershoot > 2 V under same conditions. Static characteristics are guaranteed down to VCC = 1.0 V, with dynamic performance validated across −40 °C to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.0 V to 5.5 V - enables direct interface with 1.2 V, 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| Propagation Delay (nAn → nYn) | 11 ns typical (VCC = 3.3 V, CL = 15 pF) - supports high-speed address decoding in microcontroller bus systems up to ~45 MHz. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive, industrial control, and extended-temperature embedded applications. |
| Output Drive Strength | ±6 mA (VCC = 3.0 V), ±12 mA (VCC = 4.5 V) - sufficient to drive multiple CMOS inputs or small LED loads directly. |
| Input Clamping Current | ±20 mA - provides robust protection against transient overvoltage on address or enable lines per JESD22-A114E. |
| Power Dissipation Capacitance | 42 pF - used to calculate dynamic power (PD = CPD × VCC² × fi × N), critical for thermal design in dense logic arrays. |
| ESD Protection | HBM > 2000 V, MM > 200 V - exceeds JEDEC standards for handling and board assembly reliability. |
Pinout & Package
TSSOP16 package (SOT403-1): plastic thin shrink small outline, 16 leads, body width 4.4 mm, 0.65 mm pitch, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1E | Active LOW enable for Decoder 1 - drives all 1Y0–1Y3 HIGH when asserted HIGH; accepts TTL levels at VCC ≥ 2.7 V. |
| 2 | 1A0 | LSB address input for Decoder 1 - binary-weighted with 1A1 to select one of four LOW outputs. |
| 3 | 1A1 | MSB address input for Decoder 1 - together with 1A0, determines which of 1Y0–1Y3 goes LOW. |
| 4–7 | 1Y0–1Y3 | Mutually exclusive LOW-active outputs for Decoder 1 - only one output is LOW per valid address/enable combination. |
| 8 | GND | Ground reference (0 V) - must be connected to system common return for stable logic thresholds and noise immunity. |
| 9–12 | 2Y3–2Y0 | Mutually exclusive LOW-active outputs for Decoder 2 - pin order reversed vs. standard numbering (2Y3=pin9, 2Y0=pin12). |
| 13 | 2A1 | MSB address input for Decoder 2 - independent of Decoder 1; allows concurrent dual decoding operations. |
| 14 | 2A0 | LSB address input for Decoder 2 - paired with 2A1 to select among 2Y0–2Y3. |
| 15 | 2E | Active LOW enable for Decoder 2 - identical function to 1E but electrically isolated; enables independent gating. |
| 16 | VCC | Positive supply rail - must be decoupled locally with 100 nF ceramic capacitor to suppress switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent decoders | Enables simultaneous 2-to-4 decoding for separate subsystems (e.g., peripheral A and peripheral B) without shared timing constraints. |
| Demultiplexing capability via nE | Allows 1-to-4 data distribution by applying signal to nE and addresses to nA0/nA1 - eliminates need for external gating logic. |
| Wide 1.0–5.5 V operation | Supports direct integration into mixed-voltage systems (e.g., 1.8 V FPGA core + 3.3 V I/O) without external regulators or translators. |
| Active LOW mutually exclusive outputs | Simplifies connection to active-low enable inputs of memory chips, displays, or LEDs - no external inverters required. |
| Guaranteed function down to 1.0 V | Validated operation at ultra-low supply voltages enables energy harvesting or battery-critical applications where VCC drops below 1.2 V. |
Applications
| Microcontroller Address Decoding | Memory-Mapped I/O Expansion |
|---|---|
Use Scenario: Selecting between four peripheral devices (e.g., UART, SPI flash, ADC, GPIO expander) attached to an 8-bit microcontroller data/address bus. IC Role / Device Role / Timing Role: 74LV139PW,112 acts as address-space partitioner, decoding upper address bits to assert individual chip-select (CS#) lines. Use Value: Reduces MCU port pin count by replacing four discrete CS drivers; propagation delay ≤13 ns ensures setup/hold compliance at 20 MHz bus speeds. |
Use Scenario: Expanding GPIO count in a resource-constrained IoT node using parallel-connected I/O expanders (e.g., PCF8574) with shared I²C bus but separate interrupt lines. IC Role / Device Role / Timing Role: 74LV139PW,112 routes a single interrupt signal to one of four expanders based on configuration register state. Use Value: Enables deterministic interrupt prioritization without software polling; LOW-active outputs match native INT# polarity of most I/O expanders. |
| LED Segment Driver Selection | Industrial Sensor Multiplexing |
Use Scenario: Driving four 7-segment LED displays in a multiplexed configuration where only one display is active at a time. IC Role / Device Role / Timing Role: 74LV139PW,112 selects common cathode (or anode) lines using decoded scan counter outputs. Use Value: Provides clean, glitch-free digit enable signals with <0.8 V ground bounce - prevents visible crosstalk or ghosting in high-brightness displays. |
Use Scenario: Routing analog sensor outputs (e.g., thermocouples, RTDs) to a single ADC channel in a PLC module with eight temperature inputs. IC Role / Device Role / Timing Role: 74LV139PW,112 controls analog switches (e.g., DG408) to connect one sensor pair to the ADC front-end per cycle. Use Value: Ensures precise timing alignment between address transition and switch closure due to matched propagation delays across both decoders. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 2-to-4 decoder/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC139D,653 | Higher VCC min = 2.0 V; propagation delay ~20 ns at 4.5 V; no 1.0 V operation guarantee. | Not suitable for sub-2.0 V systems; requires level translation when interfacing with 1.2 V or 1.8 V controllers. | Choose when operating exclusively at 4.5–5.5 V and legacy HC logic family compatibility is required. |
| SN74LV139ADBR | TI variant with identical pinout, 1.0–5.5 V range, and −40 °C to +125 °C rating; minor differences in VOH/VOL specs at extremes. | Drop-in replacement in most designs; verified compatibility with NXP's 74LV139PW,112 in TI/NXP co-design reference schematics. | Prefer for dual-sourcing assurance or when TI's long-term availability program is mandated by procurement policy. |
Compared with 74HC139D,653 and SN74LV139ADBR, the 74LV139PW,112 uniquely guarantees full functionality at 1.0 V supply and offers tighter propagation delay consistency across the full industrial temperature range, making it optimal for ultra-low-power and wide-temperature embedded systems.
Availability
74LV139PW,112 is available at Aetrix Electronics and suitable for microcontroller address decoding, memory-mapped I/O expansion, LED segment driver selection, and industrial sensor multiplexing requiring stable component supply across automotive, industrial, and IoT product lifecycles.
Supply support for 74LV139PW,112 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The 74LV139PW,112 belongs to NXP's LV logic family, designed specifically for low-voltage, high-noise-immunity digital interfacing in space- and power-constrained embedded systems.
FAQ
What is the minimum supply voltage at which 74LV139PW,112 guarantees correct operation?
The 74LV139PW,112 guarantees full static and dynamic functionality down to 1.0 V supply voltage, with input levels referenced to GND or VCC. This is explicitly validated per NXP's recommended operating conditions (Table 5), distinguishing it from HC/HCT families that require ≥2.0 V. At 1.0 V, propagation delay increases to 70 ns, but decoding integrity remains intact.
Does 74LV139PW,112 support TTL-level inputs, and under what conditions?
Yes, the 74LV139PW,112 accepts TTL input voltage levels when VCC is between 2.7 V and 3.6 V, as specified in its features and static characteristics (Table 6). VIH thresholds are defined at 2.0 V (min) in this range, matching standard TTL HIGH levels, enabling direct interface with legacy 5 V TTL outputs without level shifters.
How does the pinout of 74LV139PW,112 differ from standard DIP/SO packages for the same function?
The 74LV139PW,112 uses TSSOP16 (SOT403-1) with identical pin numbering to SO16 and DIP16 per NXP's pinning diagrams (Fig 4). Pin 1 = 1E, Pin 16 = VCC, and outputs 2Y3–2Y0 occupy pins 9–12 in reverse order - consistent across all 74LV139 package variants, ensuring layout reuse across form factors.
Can 74LV139PW,112 be used as a 1-to-4 demultiplexer, and how is that configured?
Yes, each decoder in the 74LV139PW,112 can operate as a 1-to-4 demultiplexer by applying the data signal to its enable input (1E or 2E) and address bits to 1A0/1A1 (or 2A0/2A1). When the enable is LOW, the data appears inverted on the selected output (since outputs are active LOW); this configuration is explicitly described in the General Description section.
What is the maximum output current drive capability of 74LV139PW,112 at 3.3 V supply?
At VCC = 3.3 V, the 74LV139PW,112 delivers −6 mA (sourcing) with VOH ≥ 2.4 V and +6 mA (sinking) with VOL ≤ 0.40 V, as specified in Table 6 (VOH/VOL rows for VCC = 3.0 V, IO = ±6 mA). These values ensure reliable driving of 10–15 CMOS inputs or low-current LEDs without external buffers.
74LV139PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LV
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Decoder/Demultiplexer
- Circuit:
- 1 x 2:4
- Independent Circuits:
- 2
- Current - Output High, Low:
- 12mA, 12mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 1V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
74LV139PW,112 FAQ
1.How can I place an order for 74LV139PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LV139PW,112 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 74LV139PW,112 reliable?
The price and inventory of 74LV139PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV139PW,112 is usually 5 days.
3.What payment methods are accepted for 74LV139PW,112?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LV139PW,112?
74LV139PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LV139PW,112 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 74LV139PW,112?
For technical support, including 74LV139PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV139PW,112 requirements.
6.How does Aetrix verify that 74LV139PW,112 is sourced from the original manufacturer or authorized distributors?
All 74LV139PW,112 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 74LV139PW,112 meets industry standards.
7.What is the process for return or replacement of 74LV139PW,112?
All 74LV139PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LV139PW,112, 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 74LV139PW,112 part is unused and in its original packaging.
Return procedure for 74LV139PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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