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Nexperia USA Inc. 74HCT253DB,118
- Part No.:
- 74HCT253DB,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HCT253DB,118.pdf
- Description:
- IC MULTIPLEXER 2 X 4:1 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,622
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Product details
Overview
74HCT253DB,118 from Nexperia is a dual 4-input multiplexer IC with TTL-compatible input thresholds, 3-state outputs, shared S0/S1 select lines, independent nOE controls per channel, and operation across 4.5 V to 5.5 V supply. It routes one of four binary inputs per channel to its respective output (1Y/2Y) under select control and enters high-impedance state when nOE is HIGH. Used in digital bus routing, data path selection, and logic-level signal switching in industrial control modules.
For engineers reviewing the 74HCT253DB,118 datasheet, 74HCT253DB,118 pinout, 74HCT253DB,118 application, or 74HCT253DB,118 equivalent, key selection criteria include TTL-level input compatibility, dual-channel 4:1 multiplexing with independent enable, SO16 package footprint, guaranteed operation at -40 °C to +125 °C, and 3-state bus interface capability without external pull-ups.
Technical Context
The 74HCT253DB,118 implements two independent 4:1 multiplexers sharing common select inputs (S0, S1) but featuring separate output enable inputs (1OE, 2OE), enabling asynchronous channel gating. Each channel selects one of four inputs (1I0–1I3 or 2I0–2I3) based on binary S0/S1 states and drives a non-inverting output (1Y or 2Y).
Its TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V) ensure direct interfacing with legacy 5 V TTL logic families, while 3-state outputs support bidirectional bus loading and contention-free sharing of data paths in microcontroller peripheral interfaces and FPGA I/O expansion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V TTL and mixed-voltage systems without level shifters. |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V - Guarantees reliable recognition of TTL logic levels without marginal switching. |
| Propagation Delay | 17 ns typical (VCC = 5.0 V, CL = 15 pF) - Supports 25+ MHz data routing in synchronous digital subsystems. |
| Output Drive | ±6 mA (VOH/VOL at VCC = 4.5 V) - Sufficient to drive 10 LS-TTL loads or terminate short PCB traces directly. |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood automotive ECUs, industrial PLC I/O modules, and power supply monitoring circuits. |
| Power Dissipation | CPD = 55 pF per multiplexer - Enables accurate dynamic power estimation in battery-sensitive or thermally constrained designs. |
| ESD Robustness | HBM > 2000 V, CDM > 1000 V - Reduces risk of field failure during handling and board assembly in uncontrolled environments. |
Pinout & Package
74HCT253DB,118 is supplied in SO16 (SOT109-1) plastic small outline package: 16-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, JEDEC MS-012 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | 1OE, 2OE | Active-LOW output enable inputs - Assert LOW to activate respective 1Y or 2Y output; HIGH forces high-impedance state. |
| 2, 14 | S1, S0 | Shared binary select inputs - Encode 00–11 to route 1I0/2I0, 1I1/2I1, 1I2/2I2, or 1I3/2I3 to 1Y/2Y respectively. |
| 3–6, 10–13 | 1I0–1I3, 2I0–2I3 | Data input terminals - Two independent 4-bit input banks; each accepts standard TTL logic levels. |
| 7, 9 | 1Y, 2Y | Non-inverting multiplexer outputs - Deliver selected input with no polarity inversion; 3-state capable. |
| 8 | GND | Ground reference - Must be connected to system 0 V plane; serves as return path for all internal logic and I/O currents. |
| 16 | VCC | Positive supply - Powers internal logic and output drivers; requires local 100 nF ceramic decoupling adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH ≥ 2.0 V, VIL ≤ 0.8 V at 5 V - Eliminates need for external level translators when interfacing with legacy 74LS or microcontroller GPIOs. |
| Dual independent enables | Separate 1OE and 2OE pins - Allows time-multiplexed or conditional activation of each multiplexer channel without affecting the other. |
| Common select bus | Shared S0/S1 inputs - Reduces control line count by 2 vs. discrete 4:1 muxes; simplifies FPGA or MCU GPIO allocation. |
| High noise immunity | Typical noise margin > 0.7 V at VCC = 5 V - Maintains correct logic interpretation in electrically noisy industrial environments (e.g., motor drives, relay panels). |
| Wide temperature range | Specified from -40 °C to +125 °C - Validated for use in automotive engine control units and outdoor telecom equipment without derating. |
Applications
| Industrial PLC I/O Expansion | Microcontroller Peripheral Multiplexing |
|---|---|
|
Use Scenario: A programmable logic controller uses multiple analog input modules, each feeding 4 sensor signals into a central ADC; only one module is sampled per cycle. IC Role / Device Role / Timing Role: 74HCT253DB,118 acts as a dual 4:1 analog multiplexer front-end, selecting one of four channels per module under S0/S1 control while isolating inactive channels via 3-state outputs. Use Value: Enables single ADC to service eight total inputs (2 × 4) with minimal routing complexity and no crosstalk between enabled/disabled paths. |
Use Scenario: An ARM Cortex-M4-based motor drive board routes UART, SPI, and I²C signals between three different sensor clusters and the main processor. IC Role / Device Role / Timing Role: Configured as two independent 4:1 digital signal routers, directing selected sensor cluster data to shared serial peripherals using synchronized S0/S1 and independent OE control. Use Value: Reduces required MCU UART/SPI/I²C instances by 66%, avoids software-based bit-banging, and maintains deterministic timing for real-time feedback loops. |
| FPGA I/O Pin Optimization | Legacy System Bus Interface |
|
Use Scenario: A Xilinx Artix-7 FPGA design has limited I/O pins but must connect to eight discrete status indicators and four configuration DIP switches. IC Role / Device Role / Timing Role: 74HCT253DB,118 consolidates indicator readback and switch input sampling into two 4-bit groups, reducing FPGA pin usage from 12 to 6 (S0/S1 + 2OE + 2Y). Use Value: Frees 6 critical I/O pins for high-speed transceivers or memory interfaces while maintaining full visibility/control of all 12 signals. |
Use Scenario: Retrofitting a 1990s industrial controller board with modern microcontroller while retaining original 8-bit parallel bus architecture and address decoding logic. IC Role / Device Role / Timing Role: Routes legacy bus data between multiple peripheral ASICs and the new MCU's parallel interface, using nOE to isolate devices during arbitration. Use Value: Preserves existing PCB layout and firmware register map; eliminates need for custom ASIC replacement or bus bridge redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4:1 multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT153DR | TI part with identical pinout, same VCC range (4.5–5.5 V), but VIH/VIL tighter (VIH min = 2.0 V, VIL max = 0.8 V); propagation delay 20 ns (typ, VCC = 5 V). | Valid drop-in replacement in most 5 V TTL systems; slightly higher ICC (max 160 μA vs. 80 μA typ for Nexperia). | Select when TI-qualified supply chain or dual-sourcing is required; verify thermal performance if operating near 125 °C continuous. |
| MC74HCT253DG | ON Semiconductor variant in SO16; identical function and DC specs, but dynamic characteristics differ slightly (tpd = 22 ns typ at VCC = 5 V, CL = 15 pF). | Compatible in static logic designs; may require timing margin review in >20 MHz clocked applications. | Prefer for designs already using ON Semi logic families to simplify qualification and reduce BOM count. |
Compared with SN74HCT153DR and MC74HCT253DG, the 74HCT253DB,118 offers the lowest typical propagation delay (17 ns), highest HBM ESD rating (2000 V), and broadest industrial temperature validation (-40 °C to +125 °C), making it optimal for timing-critical and harsh-environment deployments.
Availability
74HCT253DB,118 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive engine management units, FPGA-based test equipment, and embedded communication gateways requiring stable component supply over extended product lifecycles.
Supply support for 74HCT253DB,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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74HCT series is engineered for robust 5 V TTL interoperability in mission-critical industrial and automotive control systems, emphasizing latch-up immunity, wide temperature operation, and long-term supply stability.
FAQ
What is the maximum clock frequency supported by the 74HCT253DB,118 for reliable data routing?
The device does not operate on a clock; it is combinational logic. Its usable data rate depends on propagation delay (17 ns typical at 5 V) and system setup/hold timing. For clean 10 ns pulse edges, maximum toggle rate is ~25 MHz in point-to-point routing; for bus applications with load capacitance, derate to 10–15 MHz to maintain signal integrity.
Can 74HCT253DB,118 safely interface with 3.3 V microcontrollers?
No - its inputs require VIH ≥ 2.0 V (TTL-compatible), but 3.3 V logic may not guarantee reliable HIGH detection across voltage tolerances and temperature. Use a level translator like TXB0104 or a 74LVC245 for safe 3.3 V ↔ 5 V interfacing; direct connection risks intermittent failures.
Is the SO16 package of 74HCT253DB,118 RoHS-compliant and lead-free?
Yes - Nexperia confirms the 74HCT253DB,118 (SOT109-1) meets RoHS Directive 2011/65/EU and is lead-free, halogen-free, and compliant with JEDEC J-STD-020 moisture sensitivity level 1 (unlimited floor life at ≤30 °C/60% RH).
How does the 3-state output behavior interact with bus contention in shared-data-path designs?
When either 1OE or 2OE is HIGH, the corresponding output (1Y or 2Y) enters high-impedance mode, electrically disconnecting it from the bus. This prevents current conflict when multiple devices drive the same net. Ensure only one 74HCT253DB,118 output (or other driver) is enabled per bus segment at any time to avoid shoot-through.
74HCT253DB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Multiplexer
- Circuit:
- 2 x 4:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 6mA, 6mA
- 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:
- 16-SSOP
74HCT253DB,118 FAQ
1.How can I place an order for 74HCT253DB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT253DB,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 74HCT253DB,118 reliable?
The price and inventory of 74HCT253DB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT253DB,118 is usually 5 days.
3.What payment methods are accepted for 74HCT253DB,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT253DB,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT253DB,118?
74HCT253DB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT253DB,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 74HCT253DB,118?
For technical support, including 74HCT253DB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT253DB,118 requirements.
6.How does Aetrix verify that 74HCT253DB,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT253DB,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 74HCT253DB,118 meets industry standards.
7.What is the process for return or replacement of 74HCT253DB,118?
All 74HCT253DB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT253DB,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 74HCT253DB,118 part is unused and in its original packaging.
Return procedure for 74HCT253DB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT253DB,118 Tags
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74CBTLV3257PW,118
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