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NXP Semiconductors N74F139N,602
- Part No.:
- N74F139N,602
- Manufacturer:
- NXP Semiconductors
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
N74F139N,602.pdf
- Description:
- IC DECODER/DEMUX 1X2:4 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,697
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Product details
Overview
N74F139N,602 from Philips Semiconductors is a dual 1-of-4 decoder/demultiplexer in a 16-pin plastic DIP package, operating at 5.0 V with 5.3 ns typical propagation delay and 13 mA total supply current. It integrates two independent decoders, each with active-Low enable (Ea/Eb) and four active-Low outputs (Q0n–Q3n), used for address decoding in TTL-based memory and I/O subsystems.
For engineers reviewing the N74F139N,602 datasheet, N74F139N,602 pinout, N74F139N,602 application, or N74F139N,602 equivalent, key selection criteria include dual-decoder independence, active-Low output logic, 0°C to +70°C commercial temperature range, and compatibility with 74F-family loading and fan-out requirements.
Technical Context
The N74F139N,602 implements two fully isolated 1-of-4 decoding paths, each accepting two binary inputs (A0n, A1n) and producing mutually exclusive active-Low outputs. Enable pins (Ea, Eb) are active-Low and double as data inputs in demultiplexer mode.
Each decoder operates with TTL-compatible input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V), delivers 20 mA sink capability per output, and maintains guaranteed VOH ≥ 2.7 V and VOL ≤ 0.50 V under specified load conditions (CL = 50 pF, RL = 500 Ω).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures stable operation across standard 5 V TTL rail tolerances |
| Propagation Delay | 5.3 ns typical (A0/A1 → Qn) - supports high-speed address decoding up to ~100 MHz system clock domains |
| Output Drive | 20 mA sink per output - directly drives multiple 74F inputs or LED indicators without buffering |
| Input Loading | 1.0 FAST unit load (20 µA/0.6 mA) - matches 74F-series fan-out budget for cascade design |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade embedded control and instrumentation applications |
| Logic Family | 74F (Fast TTL) - pin- and function-compatible with 74LS/74AS where timing and drive allow |
Pinout & Package
Package: 16-pin plastic dual in-line package (DIP), SOT38-4 footprint, 300 mil width, through-hole mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Ea) | Decoder a enable input | Active-Low control: disables all Q0a–Q3a when High; serves as data input in demux mode |
| 2 (A0a) | Decoder a least-significant address input | Binary weight 2⁰; selects one of four outputs based on A0a/A1a combination |
| 3 (A1a) | Decoder a most-significant address input | Binary weight 2¹; used with A0a to generate full 2-bit decode pattern |
| 4–7 (Q0a–Q3a) | Decoder a active-Low outputs | Only one output Low per valid input combination; all High when Ea = High |
| 8 (GND) | Ground reference | Common return path for all internal logic and output sinks |
| 9–12 (Q0b–Q3b) | Decoder b active-Low outputs | Functionally identical to Q0a–Q3a but electrically isolated from decoder a |
| 13 (Eb) | Decoder b enable input | Independent active-Low control for decoder b; no coupling to Ea |
| 14 (A0b) | Decoder b least-significant address input | Electrically separate from A0a; enables concurrent dual-channel decoding |
| 15 (A1b) | Decoder b most-significant address input | Paired with A0b for second independent 2-bit decode path |
| 16 (VCC) | Positive supply | +5 V power rail; decoupling capacitor required near pin for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent decoders | Enables simultaneous 2-bit address decoding for separate memory banks or peripheral groups without shared control logic |
| Active-Low outputs with 20 mA sink | Directly interfaces with TTL/CMOS inputs and drives LEDs or relay drivers without external pull-ups or buffers |
| Enable-as-data demultiplexing | Converts each decoder into a 1-of-4 demux by applying serial data to Ea or Eb while addressing with A0n/A1n |
| 74F-family AC/DC compatibility | Meets 74F timing, loading, and voltage thresholds - simplifies drop-in replacement in legacy Fast TTL systems |
Applications
| Memory Address Decoding | I/O Port Selection |
|---|---|
Use Scenario: Selecting one of four RAM or ROM chips in a microprocessor-based system using 2-bit address lines. IC Role / Device Role / Timing Role: Dual decoder provides parallel chip-select signals for two independent 4-chip memory banks. Use Value: Eliminates need for discrete logic gates or additional ICs; reduces board space and propagation delay in critical address paths. | Use Scenario: Routing CPU data bus to one of four peripheral devices (UART, ADC, DAC, GPIO expander) via dedicated select lines. IC Role / Device Role / Timing Role: Acts as address-driven switch matrix, enabling only one peripheral at a time based on decoded address bits. Use Value: Ensures mutual exclusion between peripherals; prevents bus contention with deterministic, glitch-free output transitions. |
| Digital Logic State Machine | Industrial Control Sequencing |
Use Scenario: Generating enable pulses for sequential stages in a finite-state controller implemented with discrete flip-flops and combinational logic. IC Role / Device Role / Timing Role: Translates 2-bit state register output into four distinct stage-enable signals with precise timing alignment. Use Value: Provides predictable, race-free activation of next-stage logic; supports synchronous design without added synchronization circuitry. | Use Scenario: Activating solenoid drivers, indicator lamps, or sensor multiplexers in programmable logic controller (PLC) I/O modules. IC Role / Device Role / Timing Role: Serves as fixed-function decoder for 2-bit command codes issued by main controller ASIC or microcontroller. Use Value: Delivers robust, ESD-tolerant output drive (20 mA) suitable for industrial noise environments without added protection components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 1-of-4 decoder/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74F139N | Identical pinout, timing, and DC specs; manufactured by Texas Instruments under same 74F family spec | No functional deviation; validated for same commercial temperature range and loading conditions | Select when TI-sourced 74F logistics or dual-sourcing strategy is required |
| 74ACT139PC | Advanced CMOS (ACT) family: 3.3 V/5 V tolerant inputs, lower ICC (4 µA), faster tPD (3.5 ns typ), but higher VOH/VOL mismatch with TTL | Requires level-shifting or redesign if interfacing with legacy 74F/74LS loads; unsuitable for direct TTL fan-out reuse | Prefer for new low-power, high-speed designs with mixed-voltage interfaces; not drop-in for existing 74F layouts |
Compared with SN74F139N and 74ACT139PC, the N74F139N,602 offers guaranteed 74F-family electrical compatibility and proven reliability in long-lifecycle commercial systems, whereas SN74F139N provides sourcing flexibility and 74ACT139PC enables power-sensitive upgrades at the cost of interface redesign.
Availability
N74F139N,602 is available at Aetrix Electronics and suitable for memory address decoding, I/O port selection, digital logic state machines, and industrial control sequencing requiring stable component supply and long-term obsolescence management.
Supply support for N74F139N,602 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
Philips Semiconductors (now NXP Semiconductors) is a global semiconductor innovator with leadership in analog, logic, and interface solutions for industrial, automotive, and consumer electronics.
The 74F logic family-including the N74F139N,602-was engineered for high-speed, low-noise TTL-compatible digital systems requiring reliable propagation timing and robust fan-out in commercial-temperature environments.
FAQ
What is the maximum operating temperature for N74F139N,602?
The N74F139N,602 is rated for operation from 0°C to +70°C ambient temperature, consistent with commercial-grade 74F logic specifications. This range is validated per Philips' recommended operating conditions and supported by DC/AC characterization data at Tamb = +25°C and across the full 0°C to +70°C span. Exceeding +70°C may degrade timing margins and increase ICC drift beyond guaranteed limits.
Does N74F139N,602 support demultiplexer functionality?
Yes, the N74F139N,602 supports demultiplexing: each decoder's active-Low enable pin (Ea or Eb) functions as the data input, while A0n and A1n serve as the 2-bit select lines. When enabled, one of Q0n–Q3n goes Low per input code-effectively distributing a single data stream to one of four outputs. This is confirmed in the device description, function table, and logic symbol in the Philips datasheet.
What is the output drive capability of N74F139N,602?
The N74F139N,602 provides 20 mA sink current per output (IOL = 20 mA) under recommended conditions (VCC = 5.0 V, Tamb = +25°C). This allows direct driving of multiple 74F inputs (fan-out ≥ 20), LEDs with series resistors, or low-side transistor switches. The value is specified in the DC Electrical Characteristics table and verified across the commercial temperature range.
Is N74F139N,602 pin-compatible with other 74xx139 variants?
Yes, the N74F139N,602 shares identical pinout and function with all industry-standard 74x139 dual decoder variants including SN74F139N, 74LS139, and 74HC139-though DC and AC parameters differ. Pin mapping (E, A0, A1, Q0–Q3 per section, VCC, GND) is standardized across families, enabling layout reuse when timing and voltage compatibility are verified.
What logic family does N74F139N,602 belong to, and what are its voltage thresholds?
The N74F139N,602 belongs to the 74F (Fast TTL) logic family. Its input thresholds are VIH ≥ 2.0 V (minimum high-level voltage) and VIL ≤ 0.8 V (maximum low-level voltage) at VCC = 5.0 V. These values ensure interoperability with 74LS, 74AS, and earlier TTL families while delivering improved speed over 74LS. All thresholds are defined in the Recommended Operating Conditions table.
N74F139N,602 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74F
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Decoder/Demultiplexer
- Circuit:
- 1 x 2:4
- Independent Circuits:
- 2
- Current - Output High, Low:
- 1mA, 20mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-DIP
N74F139N,602 FAQ
1.How can I place an order for N74F139N,602 through Aetrix?
Please submit a Request for Quotation (RFQ) for N74F139N,602 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 N74F139N,602 reliable?
The price and inventory of N74F139N,602 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for N74F139N,602 is usually 5 days.
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Once your N74F139N,602 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 N74F139N,602?
For technical support, including N74F139N,602 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your N74F139N,602 requirements.
6.How does Aetrix verify that N74F139N,602 is sourced from the original manufacturer or authorized distributors?
All N74F139N,602 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 N74F139N,602 meets industry standards.
7.What is the process for return or replacement of N74F139N,602?
All N74F139N,602 units undergo pre-shipment inspection (PSI). If there is an issue with N74F139N,602, 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 N74F139N,602 part is unused and in its original packaging.
Return procedure for N74F139N,602:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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