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Nexperia USA Inc. 74HCT154PW,118
- Part No.:
- 74HCT154PW,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT154PW,118.pdf
- Description:
- IC DECODER/DEMUX 1X4:16 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,256
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Product details
Overview
74HCT154PW,118 from Nexperia is a TTL-level-compatible 4-to-16 line decoder/demultiplexer in a 24-pin TSSOP package. It decodes four binary address inputs (A0–A3) into sixteen active-LOW mutually exclusive outputs (Y0–Y15), with dual active-LOW enable inputs (E0, E1) for cascading or demultiplexing. It operates from 4.5 V to 5.5 V across –40 °C to +125 °C and is used in address decoding for memory expansion and I/O port selection in industrial microcontroller systems.
For engineers reviewing the 74HCT154PW,118 datasheet, 74HCT154PW,118 pinout, 74HCT154PW,118 application, or 74HCT154PW,118 equivalent, this device is selected for high-noise-immunity logic decoding where TTL input compatibility, low quiescent current (<160 μA at 125 °C), and guaranteed propagation delay (≤53 ns at 4.5 V) are required in space-constrained PCB layouts.
Technical Context
The 74HCT154PW,118 implements a combinational logic decoder with two independent active-LOW enables: both must be LOW for any output to respond to address inputs. Its TTL-compatible inputs accept 2.0 V minimum HIGH and 0.8 V maximum LOW thresholds at VCC = 4.5–5.5 V, enabling direct interfacing with legacy 5 V logic families without level shifters.
Outputs drive active-LOW loads with VOH ≥ 3.7 V (at IO = –4 mA, VCC = 4.5 V) and VOL ≤ 0.4 V (at IO = 4 mA), supporting standard CMOS/TTL fan-out. The device features input clamp diodes allowing safe interface to voltages exceeding VCC when current-limited resistors are used.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | 4-to-16 decoder / 1-to-16 demultiplexer with dual active-LOW enables |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures compatibility with 5 V TTL and mixed-signal systems |
| Propagation Delay (An→Yn) | 16 ns (typ), 53 ns (max) at VCC = 4.5 V - supports ≤20 MHz address decoding in real-time control |
| Input Thresholds (TTL) | VIH ≥ 2.0 V, VIL ≤ 0.8 V - guarantees robust noise margin against 5 V logic switching transients |
| Output Drive (IO) | ±4 mA - sufficient to directly drive LED indicators or enable/disable multiple 74-series ICs |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial motor control environments |
| Power Dissipation | ≤160 μA ICC (max) at 125 °C - enables low-power standby operation in battery-backed systems |
Pinout & Package
TSSOP24 plastic thin shrink small outline package (SOT355-1); 24 leads; body width 4.4 mm; 0.65 mm pitch; exposed pad not electrically connected.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1–11, 13–17 | Y0–Y15 (active-LOW) | 16 decoded outputs; only one LOW per valid address/enable combination |
| 12 | GND | Ground reference for all logic and power terminals |
| 18, 19 | E0, E1 (active-LOW) | Enable controls: both must be LOW for decoding; used as data input in demux mode |
| 20–23 | A0–A3 | Binary address inputs; A0 = LSB, A3 = MSB; determine selected output |
| 24 | VCC | Positive supply rail (4.5–5.5 V); powers internal logic and output stages |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH ≥ 2.0 V, VIL ≤ 0.8 V at 4.5–5.5 V - eliminates need for external level translators in 5 V systems |
| Active-LOW mutual exclusivity | Only one Yx output LOW per valid address; prevents bus contention in memory-mapped I/O |
| Clamp diode protection | Enables safe interface to signals up to VCC + 0.5 V using series current-limiting resistors |
| High noise immunity | Typical noise margin >1.2 V at VCC = 4.5 V - suppresses false triggering in electrically noisy PLC cabinets |
| Thermal robustness | Rated to +125 °C ambient with linear derating (12.4 mW/K above 110 °C) - supports convection-cooled industrial enclosures |
Applications
| Memory Address Decoding | I/O Port Expansion |
|---|---|
Use Scenario: Selecting one of 16 SRAM or EEPROM chips in a microcontroller-based data logger. IC Role / Device Role / Timing Role: Decoder translates 4-bit chip-select bus into individual /CS lines; propagation delay <53 ns ensures setup time compliance with 25 ns memory access cycles. Use Value: Eliminates discrete gate logic, reduces BOM count by 12+ components, and maintains deterministic timing across temperature. |
Use Scenario: Expanding GPIO count on an ARM Cortex-M0+ MCU to drive 16 relay drivers in HVAC control panels. IC Role / Device Role / Timing Role: Demultiplexer routes single control signal to selected relay driver enable input; active-LOW outputs match common cathode relay logic. Use Value: Enables single-wire serial control of 16 relays via address + data, reducing PCB routing complexity and isolation component count. |
| LED Matrix Row Selection | Industrial Sensor Multiplexing |
Use Scenario: Driving rows of a 16×8 LED display in a factory HMI panel with PWM dimming. IC Role / Device Role / Timing Role: Row decoder activates one LED row at a time; fast transition time (<22 ns) minimizes ghosting during high-refresh-rate scanning. Use Value: Supports 1 kHz multiplexing frequency while maintaining >90% brightness efficiency and eliminating row crosstalk. |
Use Scenario: Routing analog sensor outputs (thermocouples, pressure transducers) to a shared ADC channel in predictive maintenance gateways. IC Role / Device Role / Timing Role: Demultiplexer selects one sensor's conditioned signal to ADC input; enable-controlled blanking prevents sampling glitches during switching. Use Value: Reduces signal chain cost by sharing high-precision ADC across 16 sensors without performance degradation or calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-to-16 decoder/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC154PW,118 | CMOS-level inputs (VIH ≥ 3.15 V @ 4.5 V); wider 2.0–6.0 V supply range | Better suited for mixed-voltage systems (e.g., 3.3 V MCU controlling 5 V peripherals) | Select when interfacing with 3.3 V logic or requiring extended supply flexibility |
| SN74LS154N | Bipolar TTL; higher ICC (40 mA typical); 4.75–5.25 V only; slower (tPD ≈ 22 ns min) | Higher power draw limits use in thermally constrained designs; no 125 °C rating | Choose only for legacy board replacements where LS-family timing and loading are already validated |
Compared with 74HC154PW,118 and SN74LS154N, the 74HCT154PW,118 uniquely balances TTL input compatibility, low static current, and extended temperature operation-making it optimal for new industrial designs requiring interoperability with legacy 5 V logic without sacrificing thermal headroom or power efficiency.
Availability
74HCT154PW,118 is available at Aetrix Electronics and suitable for memory address decoding, I/O port expansion, LED matrix row selection, and industrial sensor multiplexing requiring stable component supply across automotive and industrial temperature ranges.
Supply support for 74HCT154PW,118 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
Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions with focus on reliability, efficiency, and miniaturization for industrial and automotive markets.
The 74HCT154 belongs to Nexperia's 74HCT logic family, engineered for seamless integration between TTL and CMOS systems in harsh-environment applications demanding wide temperature operation and noise resilience.
FAQ
Can 74HCT154PW,118 operate at 3.3 V supply?
No. The 74HCT154PW,118 is specified only for 4.5 V to 5.5 V operation per its recommended conditions. At 3.3 V, input thresholds (VIH ≥ 2.0 V) may not be reliably met, and output drive strength degrades significantly. Use 74HC154PW,118 for 3.3 V–6.0 V systems.
What is the maximum capacitive load each Yx output can drive?
Each Yx output is rated for ±4 mA at VCC = 4.5 V. Assuming a typical 100 pF load (PCB trace + input capacitance), the 22 ns max transition time ensures clean edges without ringing. For >200 pF, add a series resistor (22–47 Ω) to dampen reflections.
How does the dual-enable architecture support cascading?
E0 and E1 are both active-LOW enables. To cascade two devices, tie E0 of the second IC to one Yx output of the first, and hold E1 LOW. This allows 5-bit addressing (A4 from first IC's Yx selects second IC), expanding to 32 outputs with minimal glue logic.
Is the exposed thermal pad on the TSSOP24 package electrically connected?
No. Per Nexperia SOT355-1 mechanical drawing, the exposed pad has no electrical function. It may remain floating or be connected to GND for thermal improvement, but soldering it to VCC is not permitted and violates the package specification.
74HCT154PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Decoder/Demultiplexer
- Circuit:
- 1 x 4:16
- Independent Circuits:
- 1
- Current - Output High, Low:
- 4mA, 4mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
74HCT154PW,118 FAQ
1.How can I place an order for 74HCT154PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT154PW,118 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 74HCT154PW,118 reliable?
The price and inventory of 74HCT154PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT154PW,118 is usually 5 days.
3.What payment methods are accepted for 74HCT154PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT154PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT154PW,118?
74HCT154PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT154PW,118 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 74HCT154PW,118?
For technical support, including 74HCT154PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT154PW,118 requirements.
6.How does Aetrix verify that 74HCT154PW,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT154PW,118 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 74HCT154PW,118 meets industry standards.
7.What is the process for return or replacement of 74HCT154PW,118?
All 74HCT154PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT154PW,118, 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 74HCT154PW,118 part is unused and in its original packaging.
Return procedure for 74HCT154PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT154PW,118 Tags
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SN74HC138DR
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TC7SB3157CFU,LF(CT
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74CBTLV3257PW,118
Nexperia USA Inc.
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74CBTLV3257GUX
Nexperia USA Inc.
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74HC154BQ,118
Nexperia USA Inc.
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P3S0200GMX
NXP USA Inc.
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SN74CB3Q3245PWR
Texas Instruments
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Texas Instruments
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TCA9543APWR
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TCA9546APWR
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SN74HC138N
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