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Texas Instruments CD74HC139M96
- Part No.:
- CD74HC139M96
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD74HC139M96.pdf
- Description:
- IC DECODER/DEMUX 1X2:4 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,140
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Product details
Overview
CD74HC139M96 from Texas Instruments is a dual 2-to-4 line decoder/demultiplexer in SOIC-16 package, operating from 2V to 6V with propagation delay of 25ns (typ) at 6V, active-low mutually exclusive outputs, and -55°C to +125°C temperature range - used for memory decoding and data routing in industrial control logic.
For engineers reviewing the CD74HC139M96 datasheet, CD74HC139M96 pinout, CD74HC139M96 application, or CD74HC139M96 equivalent, this page delivers verified functional identity, validated SOIC-16 pin mapping, confirmed HC-family electrical specs, and real-world timing and loading behavior for reliable system integration.
Technical Context
The CD74HC139M96 integrates two independent binary-to-1-of-4 decoders, each with a single active-low enable input (1E/2E) and select inputs (A0/A1); outputs are active-low and mutually exclusive - only one output per decoder goes low per valid input combination. It supports both decoder and demultiplexer modes, where the enable input serves as data input in demux mode and chip-select in cascaded configurations.
It is functionally identical to CD4556B and pin-compatible with it; operates in HC logic family with CMOS input compatibility (II ≤ 1 µA), high noise immunity (NIL/NIH = 30% of VCC at 5V), and drives up to 10 LSTTL loads. Absolute max ratings include VCC = -0.5V to 7V and junction temperature up to 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | High-speed CMOS (HC), not TTL-compatible - requires 2V–6V supply, delivers rail-to-rail swing and low static current. |
| Propagation Delay | 25 ns (typ) at VCC = 6V, CL = 50 pF - enables reliable operation in sub-20 MHz address decode paths. |
| Output Drive | ±25 mA per output, drives 10 LSTTL loads - sufficient for direct interfacing with legacy TTL bus structures. |
| Input Thresholds | VIL ≤ 0.5 V, VIH ≥ 1.5 V at VCC = 2V - ensures robust logic-level recognition across wide voltage range. |
| Operating Temp | -55°C to +125°C - qualified for aerospace, automotive under-hood, and industrial embedded environments. |
| Power Dissipation | CPD = 55 pF - enables accurate dynamic power estimation via PD = VCC2 × fi × (CPD + CL). |
| ESD Sensitivity | Electrostatic discharge sensitive - requires handling per IC ESD protocols to prevent gate oxide damage. |
Pinout & Package
CD74HC139M96 uses a 16-pin SOIC (Small Outline Integrated Circuit) package with standard 1.27 mm pitch, JEDEC MS-012AC compliant, moisture sensitivity level 1 (260°C reflow compatible), and tape-and-reel packaging (2500 units/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1E, 2E | Active-low enable inputs | Each enables its respective decoder; high = all four outputs forced high (disabled state). |
| 1A0, 1A1 / 2A0, 2A1 | Binary select inputs | Two-bit address selects which of four outputs (Y0–Y3) goes low; "00" → Y0, "11" → Y3. |
| 1Y0–1Y3 / 2Y0–2Y3 | Active-low decoded outputs | Outputs are mutually exclusive and never float - always driven high or low; no pull-ups required. |
| VCC (Pin 16) | Positive supply | Accepts 2V–6V; powers both decoders; decoupling capacitor recommended near pin. |
| GND (Pin 8) | Ground reference | Common return for all logic and output currents; must be low-impedance path to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent decoders | Enables two parallel 2-to-4 decode paths on one die - reduces board space vs. discrete solutions. |
| Active-low, mutually exclusive outputs | Eliminates need for external OR/NOR logic in priority encoding or bus arbitration applications. |
| Wide 2V–6V supply range | Supports mixed-voltage systems (e.g., 3.3V logic controlling 5V peripherals) without level shifters. |
| Low quiescent current | ICC ≤ 160 µA over full temp range - suitable for battery-backed or low-power standby circuits. |
| High noise immunity | NIL/NIH = 30% of VCC at 5V - rejects >1.5V noise spikes on inputs without false triggering. |
Applications
| Memory Address Decoding | Data Routing in Industrial PLCs |
|---|---|
|
Use Scenario: Selecting one of four RAM/ROM chips in a microcontroller-based data acquisition system using 2-bit address lines. IC Role / Device Role / Timing Role: Decoder translating A1:A0 into chip-select signals; propagation delay <25 ns ensures setup/hold compliance at 10 MHz bus clocks. Use Value: Eliminates discrete NAND gate networks, reduces layout complexity, and guarantees deterministic output assertion timing. |
Use Scenario: Directing sensor data streams from four analog front-ends to a shared ADC channel in an industrial controller. IC Role / Device Role / Timing Role: Demultiplexer using 2E as data input and 2A0/2A1 as channel address; enables time-division multiplexing with zero-latency switching. Use Value: Provides glitch-free channel selection due to mutually exclusive outputs - prevents signal contention on shared bus. |
| Legacy TTL System Interface | Programmable Logic Expansion |
|
Use Scenario: Interfacing a modern 3.3V FPGA I/O bank to legacy 5V TTL peripheral modules requiring active-low chip selects. IC Role / Device Role / Timing Role: Level-tolerant decoder driving 10 LSTTL loads directly; VIH/VIL thresholds ensure clean logic translation without external buffers. Use Value: Avoids dedicated level-shifter ICs while maintaining timing integrity and fanout capability across voltage domains. |
Use Scenario: Expanding output count of a CPLD by decoding two control bits to activate one of four peripheral enable lines (e.g., UARTs, SPI masters). IC Role / Device Role / Timing Role: Static configuration decoder; outputs remain stable during CPLD reconfiguration - no metastability risk. Use Value: Adds deterministic, low-jitter enable signaling with guaranteed monotonic transitions - critical for synchronized peripheral initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 2-to-4 decoder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD74HCT139M96 | HCT variant: 4.5V–5.5V only, LSTTL-input compatible (VIL ≤ 0.8 V, VIH ≥ 2 V), same pinout and function. | Required when interfacing directly with 5V TTL outputs; not suitable for 2V–3.3V systems. | Select CD74HCT139M96 only if driving from standard TTL logic; otherwise CD74HC139M96 offers broader supply flexibility. |
| SN74LS139DR | LS-TTL family: 4.75V–5.25V, higher ICC, slower (tpd ≈ 22 ns min), open-collector outputs require pull-ups. | Used in legacy 5V-only designs; incompatible with CMOS input drive or low-voltage operation. | Choose SN74LS139DR only for drop-in replacement in existing LS-TTL boards; not recommended for new low-power or mixed-voltage designs. |
Compared with CD74HCT139M96 and SN74LS139DR, CD74HC139M96 uniquely supports 2V–6V operation, delivers lower static power, and eliminates external pull-ups - making it optimal for energy-constrained or multi-rail embedded systems where voltage scalability matters.
Availability
CD74HC139M96 is available at Aetrix Electronics and suitable for industrial control systems, aerospace avionics interfaces, and automotive body electronics requiring stable component supply across extended temperature ranges.
Supply support for CD74HC139M96 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 logic solutions with emphasis on reliability, longevity, and industrial-grade qualification.
CD74HC139M96 belongs to TI's High-Speed CMOS Logic family, designed specifically for robust, low-power address decoding and data routing in harsh-environment applications demanding wide temperature tolerance and noise resilience.
FAQ
What is the supply voltage range for CD74HC139M96?
The CD74HC139M96 operates from 2V to 6V DC, supporting both 3.3V and 5V systems without level shifting. This wide range allows use in mixed-voltage designs and battery-powered applications where supply may vary. The device maintains specified timing and drive strength across the full range, with propagation delay improving as VCC increases - e.g., 25 ns (typ) at 6V versus 145 ns (typ) at 2V.
Is CD74HC139M96 pin-compatible with CD4556B?
Yes, CD74HC139M96 is pin-compatible with CD4556B, sharing identical pin assignments for VCC, GND, enables, select inputs, and outputs. However, CD4556B is a CMOS device with different electrical characteristics (e.g., wider VCC range up to 18V, slower speed), so direct substitution requires verification of timing, loading, and voltage compatibility in the target circuit.
Can CD74HC139M96 drive LSTTL loads directly?
Yes, CD74HC139M96 can drive up to 10 LSTTL loads per output, verified by its fanout specification and output drive capability (±25 mA). Its VOH and VOL values meet LSTTL input thresholds across temperature and supply voltage - e.g., VOH ≥ 3.98 V and VOL ≤ 0.26 V at VCC = 4.5 V - enabling direct interface without buffer stages.
What is the meaning of the '96' suffix in CD74HC139M96?
The '96' suffix in CD74HC139M96 indicates tape-and-reel packaging with 2500 units per reel, optimized for automated SMT assembly. It shares identical electrical and thermal specifications with CD74HC139M (tube-packaged version), differing only in packaging format - no functional or parametric distinction exists between the two part numbers.
Does CD74HC139M96 support demultiplexer functionality?
Yes, CD74HC139M96 supports demultiplexer operation: the enable input (1E or 2E) acts as the data input, while A0/A1 select the output channel. When enabled, the selected Yx output mirrors the enable signal's logic state (active-low), allowing 1-to-4 signal distribution - confirmed by truth table and functional description in the TI datasheet SCHS148D.
CD74HC139M96 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.154", 3.90mm 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:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
CD74HC139M96 FAQ
1.How can I place an order for CD74HC139M96 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74HC139M96 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 CD74HC139M96 reliable?
The price and inventory of CD74HC139M96 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74HC139M96 is usually 5 days.
3.What payment methods are accepted for CD74HC139M96?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74HC139M96?
CD74HC139M96 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74HC139M96 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 CD74HC139M96?
For technical support, including CD74HC139M96 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74HC139M96 requirements.
6.How does Aetrix verify that CD74HC139M96 is sourced from the original manufacturer or authorized distributors?
All CD74HC139M96 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 CD74HC139M96 meets industry standards.
7.What is the process for return or replacement of CD74HC139M96?
All CD74HC139M96 units undergo pre-shipment inspection (PSI). If there is an issue with CD74HC139M96, 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 CD74HC139M96 part is unused and in its original packaging.
Return procedure for CD74HC139M96:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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