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Nexperia USA Inc. 74HCT154DB,118
- Part No.:
- 74HCT154DB,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 24-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HCT154DB,118.pdf
- Description:
- IC DECODER/DEMUX 1X4:16 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,482
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Product details
Overview
74HCT154DB,118 from Nexperia is a TTL-level-compatible 4-to-16 line decoder/demultiplexer in SO24 package (SOT137-1), operating from 4.5 V to 5.5 V supply, featuring active-LOW 16-channel outputs, dual active-LOW enable inputs (E0, E1), and propagation delay as low as 13 ns at 4.5 V. It serves as a core address decoder in microcontroller peripheral expansion and memory-mapped I/O systems.
For engineers reviewing the 74HCT154DB,118 datasheet, 74HCT154DB,118 pinout, 74HCT154DB,118 application, or 74HCT154DB,118 equivalent, key selection criteria include TTL input compatibility, -40 °C to +125 °C industrial temperature range, SO24 thermal performance, and demultiplexer mode operation using E0/E1 as data/strobe inputs.
Technical Context
The device implements a binary-decoded logic array that maps four address inputs (A0–A3) to sixteen mutually exclusive active-LOW outputs (Y0–Y15). Its dual enable architecture allows synchronous gating: both E0 and E1 must be LOW for decoding to occur; either HIGH forces all outputs HIGH.
In demultiplexer mode, one enable (e.g., E0) acts as data input while the other (E1) serves as strobe-only when E1 is LOW does the selected output Yn mirror E0's logic state. Input clamp diodes support interfacing to voltages exceeding VCC when used with current-limiting resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5 V to 5.5 V - ensures direct compatibility with 5 V TTL logic families and stable operation across industrial voltage tolerances. |
| Input logic level | TTL-compatible - VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V, enabling seamless integration with legacy 5 V microcontrollers and FPGAs. |
| Propagation delay | 16 ns (max) at 4.5 V - guarantees sub-20 ns address decode latency critical for real-time peripheral selection in embedded control systems. |
| Output drive | ±4 mA at VCC = 4.5 V - sufficient to directly drive LED indicators, small-signal transistors, or CMOS/TTL fan-in without external buffers. |
| Operating temperature | -40 °C to +125 °C - validated for under-hood automotive modules, industrial PLC backplanes, and high-reliability power supply sequencers. |
| ESD rating | HBM > 2000 V, CDM > 1000 V - meets JEDEC JS-001/JS-002 Class 2/C3, supporting robust handling in automated SMT assembly lines. |
| Power dissipation | 500 mW max (SO24) - enables continuous operation in compact enclosures with minimal heatsinking requirements. |
Pinout & Package
74HCT154DB,118 uses the SO24 plastic small outline package (SOT137-1), 24-pin, 7.5 mm body width, with standard gull-wing lead form and pin 1 index notch. Thermal resistance θJA = 62 K/W (typical), suitable for convection-cooled PCB layouts.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1–8, 10–11, 13–17 | Y0–Y15 (active-LOW outputs) | 16 decoded outputs; only one asserted LOW per valid A3:A0 combination when both enables are active-LOW. |
| 12 | GND | Reference ground return for all internal logic and output drivers; must be low-impedance connection to system ground plane. |
| 18–19 | E0, E1 (active-LOW enables) | Both must be LOW to activate decoding; either HIGH disables all outputs (forces HIGH), enabling bus arbitration or hierarchical enable chaining. |
| 20–23 | A0–A3 (binary address inputs) | LSB-to-MSB address bits; latched on rising/falling edges per static CMOS design-no clock required. |
| 24 | VCC | Positive supply rail; decoupling capacitor (100 nF ceramic) recommended within 5 mm of this pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| 16-line demultiplexing capability | Enables single-data-line distribution to 16 destinations using E0 as data and E1 as strobe-eliminates need for separate multiplexer ICs in I/O expanders. |
| Input clamp diodes | Allow safe interface to signals up to VCC + 0.5 V via series resistors-critical for mixed-voltage board designs with 3.3 V controllers driving 5 V peripherals. |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B-ensures resilience against transient overvoltage events in noisy industrial environments. |
| Wide temperature range | Specified from -40 °C to +125 °C-validates use in engine control units, motor drives, and outdoor telecom equipment without derating. |
| Low quiescent current | ICC ≤ 160 μA at 5.5 V and +125 °C-minimizes standby power in battery-backed systems and energy-sensitive IoT gateways. |
Applications
| Memory-Mapped I/O Expansion | Industrial Address Decoding |
|---|---|
|
Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ MCU by attaching multiple SPI peripherals (ADCs, DACs, sensors) each assigned to unique chip-select lines. IC Role / Device Role / Timing Role: Acts as address decoder mapping upper address bits (A12–A15) to individual /CS lines; timing-critical path limited by tpd ≤ 16 ns. Use Value: Reduces firmware complexity by eliminating software-based chip select toggling and enables deterministic peripheral access timing. |
Use Scenario: Selecting among 16 analog input channels in a programmable logic controller (PLC) analog input module. IC Role / Device Role / Timing Role: Provides hardware-based channel selection synchronized to ADC conversion trigger; outputs drive analog multiplexer control inputs. Use Value: Ensures glitch-free channel switching during high-speed sampling (≥100 kSPS) without CPU intervention or timing jitter. |
| LED Matrix Row Driver | Automotive Diagnostic Interface |
|
Use Scenario: Driving 16-row common-anode LED matrix in automotive dashboard display using constant-current sink drivers. IC Role / Device Role / Timing Role: Generates row-enable signals (Y0–Y15) in multiplexed scan mode; outputs switch at ≤ 22 ns transition time to minimize ghosting. Use Value: Enables 1:16 duty cycle with precise row blanking, achieving uniform brightness and eliminating cross-talk between rows. |
Use Scenario: Routing diagnostic signals (K-Line, CAN-L, LIN, PWM) from vehicle ECU to service tool connector pins based on protocol selection command. IC Role / Device Role / Timing Role: Functions as protocol selector-address inputs set by microcontroller, outputs enable corresponding transceiver enable pins. Use Value: Supports hot-plug diagnostics without ECU reset; dual enable inputs allow fail-safe disable during error conditions. |
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 |
|---|---|---|---|
| 74HC154DB,118 | CMOS-level inputs (VIH ≥ 3.15 V @ 4.5 V); wider 2.0–6.0 V supply range | Better suited for mixed-supply systems with 3.3 V controllers and 5 V peripherals | Select when interfacing with 3.3 V logic or requiring extended voltage flexibility beyond 5 V. |
| SN74LS154N | Bipolar TTL technology; higher ICC (40 mA typical); slower tpd (~35 ns); no clamp diodes | Legacy replacement only; requires external clamping for overvoltage protection | Choose only for direct drop-in replacement in vintage 74LS-based designs where power and speed are secondary. |
Compared with 74HC154DB,118 and SN74LS154N, the 74HCT154DB,118 uniquely balances TTL input compatibility, low power (160 μA max), and industrial temperature range-making it optimal for modern 5 V embedded systems requiring interoperability with legacy components without sacrificing reliability.
Availability
74HCT154DB,118 is available at Aetrix Electronics and suitable for industrial control panels, automotive diagnostic interfaces, and LED display subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT154DB,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 leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with global manufacturing and R&D centers focused on automotive-grade reliability and industrial efficiency.
The 74HCT154 belongs to Nexperia's industry-standard 74HCT logic family, designed specifically for seamless 5 V TTL-to-CMOS interfacing in cost-sensitive, high-volume embedded applications demanding robustness and long-term supply stability.
FAQ
Can 74HCT154DB,118 operate at 3.3 V supply?
No. The 74HCT154DB,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 74HC154DB,118 instead for 2.0–6.0 V operation including 3.3 V systems.
What is the maximum capacitive load per output?
Each Y0–Y15 output is characterized up to 50 pF load capacitance in dynamic testing (tpd, tt). Driving >50 pF increases propagation delay nonlinearly and may cause signal integrity issues; for >100 pF loads, add a buffer stage or reduce trace length and stubs.
How do the two enable inputs interact logically?
E0 and E1 are ANDed internally: decoding occurs only when both are LOW. If either is HIGH, all outputs go HIGH regardless of A0–A3 state. This allows cascading-e.g., using one 74HCT154's output to drive E1 of another for 5-to-32 decoding.
Is the SO24 package RoHS compliant and lead-free?
Yes. The 74HCT154DB,118 in SOT137-1 (SO24) package is RoHS-compliant and lead-free per Nexperia's product documentation, with matte tin (Sn) termination finish and halogen-free molding compound meeting IEC 61249-2-21 standards.
74HCT154DB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 24-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-SSOP
74HCT154DB,118 FAQ
1.How can I place an order for 74HCT154DB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT154DB,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 74HCT154DB,118 reliable?
The price and inventory of 74HCT154DB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT154DB,118 is usually 5 days.
3.What payment methods are accepted for 74HCT154DB,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT154DB,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT154DB,118?
74HCT154DB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT154DB,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 74HCT154DB,118?
For technical support, including 74HCT154DB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT154DB,118 requirements.
6.How does Aetrix verify that 74HCT154DB,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT154DB,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 74HCT154DB,118 meets industry standards.
7.What is the process for return or replacement of 74HCT154DB,118?
All 74HCT154DB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT154DB,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 74HCT154DB,118 part is unused and in its original packaging.
Return procedure for 74HCT154DB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT154DB,118 Tags
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SN74HC138DR
Texas Instruments
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TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
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74CBTLV3257PW,118
Nexperia USA Inc.
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SN74CBTLV3257PWR
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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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SN74CB3Q3257RGYR
Texas Instruments
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TCA9543APWR
Texas Instruments
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TCA9546APWR
Texas Instruments
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SN74HC138N
Texas Instruments
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