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NXP Semiconductors 74HCT4051D/AUJ
- Part No.:
- 74HCT4051D/AUJ
- Manufacturer:
- NXP Semiconductors
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT4051D/AUJ.pdf
- Description:
- IC MUX 8:1 120OHM 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,508
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Product details
Overview
74HCT4051D/AUJ from Nexperia is an 8-channel analog multiplexer/demultiplexer (SP8T) with TTL-compatible logic inputs, 4.5 V to 5.5 V supply operation, typical ON resistance of 70 Ω at VCC = 4.5 V and VEE = –4.5 V, ±5 V analog signal handling capability, and –40 °C to +125 °C operating range - used in sensor signal routing for industrial data acquisition systems.
For engineers reviewing the 74HCT4051D/AUJ datasheet, 74HCT4051D/AUJ pinout, 74HCT4051D/AUJ application, or 74HCT4051D/AUJ equivalent, key selection criteria include bidirectional analog switching performance under dual-supply conditions, logic-level translation between 5 V digital control and ±5 V analog domains, low crosstalk (<220 mV), and guaranteed operation across automotive-grade temperature extremes.
Technical Context
The 74HCT4051D/AUJ implements a single-pole octal-throw analog switch architecture with three binary select lines (S0–S2), active-low enable (E), and independent Y0–Y7 terminals plus common Z terminal. It supports true bidirectional signal flow and operates with separate VCC (positive supply) and VEE (negative supply) rails.
Its internal decoder enables one-of-eight channel selection when E is LOW; all switches open when E is HIGH. Input clamp diodes allow safe interfacing to voltages beyond VCC/VEE when current-limiting resistors are used, and it features built-in 'break-before-make' switching to prevent channel shorting during transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | VCC = 4.5 V to 5.5 V; VEE = –4.5 V to 0 V - enables ±5 V analog signal routing with 5 V logic compatibility |
| ON resistance (typ) | 70 Ω at VCC = 4.5 V, VEE = –4.5 V - ensures minimal analog signal attenuation and distortion in precision sensor interfaces |
| Switch bandwidth | f(–3 dB) = 180 MHz at VCC = 4.5 V, VEE = –4.5 V - supports high-frequency analog multiplexing up to video-bandwidth signals |
| Crosstalk | 220 mV peak at 1 MHz, VCC = 4.5 V, VEE = –4.5 V - limits interference between adjacent channels in multi-sensor systems |
| Isolation (OFF-state) | –50 dB at 1 MHz - maintains signal integrity by suppressing leakage between unselected channels |
| Propagation delay | 4 ns typical (Vis to Vos, VCC = 4.5 V, VEE = –4.5 V) - enables fast digital control of analog paths in real-time systems |
| Operating temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
74HCT4051D/AUJ is housed in a 16-pin SOIC package (SOT109-1), 3.9 mm body width, with standard 1.27 mm pitch and surface-mount footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Y4 | Independent analog I/O channel - connects to fourth sensor or signal source in 8-channel routing |
| 2 | VCC | Positive supply rail - powers internal logic and switch circuitry; must be decoupled near pin |
| 3 | Y6 | Independent analog I/O channel - provides sixth path for differential or auxiliary signal routing |
| 4 | Y2 | Independent analog I/O channel - used for secondary analog input/output in compact PCB layouts |
| 5 | Z | Common analog I/O terminal - serves as shared signal hub for all eight channels in mux/demux configurations |
| 6 | Y1 | Independent analog I/O channel - first selected channel in ascending binary order (S2S1S0 = 001) |
| 7 | Y7 | Independent analog I/O channel - highest-indexed channel (S2S1S0 = 111), often used for calibration or reference signals |
| 8 | Y0 | Independent analog I/O channel - default channel (S2S1S0 = 000); commonly assigned to primary sensor input |
| 9 | Y5 | Independent analog I/O channel - fifth path supporting multi-channel ADC front-end designs |
| 10 | Y3 | Independent analog I/O channel - third channel in sequence; useful for redundant or backup signal paths |
| 11 | E | Enable input (active LOW) - globally disables all switches; critical for power gating and fault isolation |
| 12 | S0 | Select input bit 0 - LSB of 3-bit binary address determining which Yn connects to Z |
| 13 | VEE | Negative supply rail - sets lower analog voltage limit; required for bipolar signal handling (e.g., ±5 V) |
| 14 | S1 | Select input bit 1 - middle bit of channel address; timing-critical in high-speed multiplexing |
| 15 | GND | Ground reference - return path for logic and analog currents; must be low-impedance and separated from noisy digital GND where possible |
| 16 | S2 | Select input bit 2 - MSB of channel address; determines upper half (Y4–Y7) vs lower half (Y0–Y3) selection |
Key Features
| Feature | Design Value |
|---|---|
| Wide analog voltage range | –5 V to +5 V signal handling with dual supplies - eliminates need for level-shifting circuitry in mixed-signal systems |
| Logic-level translation | TTL-compatible inputs accept 5 V logic while controlling ±5 V analog paths - simplifies interface with microcontrollers and FPGAs |
| Low ON resistance mismatch | ΔRON ≤ 6 Ω between channels at VCC = 4.5 V, VEE = –4.5 V - ensures consistent gain and linearity across all 8 channels |
| Break-before-make switching | Guaranteed non-overlapping conduction during channel transitions - prevents momentary shorts in sensitive analog circuits |
| ESD robustness | HBM > 2000 V, CDM > 1000 V - enhances reliability in manufacturing and field-deployed equipment |
Applications
| Industrial Sensor Multiplexing | Automotive Battery Monitoring |
|---|---|
Use Scenario: Routing outputs from eight temperature, pressure, or current sensors to a single ADC in PLC or process controller. IC Role / Device Role / Timing Role: Analog multiplexer enabling time-division sampling of multiple sensors without dedicated ADC per channel. Use Value: Reduces BOM cost and PCB area by consolidating signal conditioning paths while maintaining ±5 V dynamic range and <12 ns propagation delay. | Use Scenario: Selecting individual cell voltages in a 12S lithium-ion battery pack for state-of-charge monitoring. IC Role / Device Role / Timing Role: High-voltage-tolerant analog switch isolating each 3–4.2 V cell from a central monitor IC. Use Value: Supports direct connection to ±5 V capable monitors with 70 Ω ON resistance minimizing measurement error across full temperature range (–40 °C to +125 °C). |
| Test Equipment Signal Routing | Medical Instrumentation Front-End |
Use Scenario: Configurable signal path selection in automated test equipment for calibrating multiple DUTs with shared stimulus and measurement resources. IC Role / Device Role / Timing Role: Bidirectional analog switch enabling flexible stimulus injection and response capture across 8 test points. Use Value: Delivers 180 MHz bandwidth and –50 dB OFF-isolation to preserve signal fidelity during high-speed functional testing. | Use Scenario: Multiplexing ECG, EEG, or EMG electrode inputs into a low-noise instrumentation amplifier chain. IC Role / Device Role / Timing Role: Precision analog multiplexer providing low crosstalk (<220 mV) and minimal harmonic distortion (0.02 %) for biopotential signals. Use Value: Maintains clinical-grade signal integrity with sub-μA leakage current and rail-to-rail analog capability under dual-supply operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC4051D | CMOS logic inputs (VIH min = 3.15 V at VCC = 4.5 V); wider VCC range (2.0–10.0 V); higher ON resistance (100 Ω typ at same bias) | Better suited for mixed-voltage systems where logic may operate below 4.5 V; less ideal for strict 5 V TTL control environments | Choose 74HC4051D only if system uses CMOS-level microcontrollers or requires extended supply flexibility over TTL compatibility |
| ADG708BRUZ | Single-supply operation (±1.8 V to ±5.5 V); lower ON resistance (3.5 Ω typ); SPI interface instead of parallel select lines | Requires digital controller with SPI peripheral; superior for ultra-low-distortion audio or RF applications but adds firmware overhead | Select ADG708BRUZ when lowest possible RON and integrated serial control justify added software complexity and cost premium |
Compared with 74HC4051D and ADG708BRUZ, the 74HCT4051D/AUJ uniquely balances TTL-compatible ease-of-use, bipolar analog support, and industrial temperature resilience - making it optimal for legacy 5 V controller-based systems requiring robust, pin-straightforward analog routing.
Availability
74HCT4051D/AUJ is available at Aetrix Electronics and suitable for industrial automation, automotive battery management, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT4051D/AUJ 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, reliable components for automotive, industrial, and consumer applications with emphasis on efficiency and miniaturization.
The 74HCT4051D/AUJ belongs to Nexperia's 74HCT logic family, engineered specifically for seamless integration between 5 V TTL digital control domains and wide-range analog signal paths in harsh-environment systems.
FAQ
What is the maximum analog signal voltage range supported by the 74HCT4051D/AUJ?
The 74HCT4051D/AUJ supports analog signals from VEE to VCC. With VCC = 4.5 V and VEE = –4.5 V, it handles ±5 V signals. The device is rated for VCC – VEE up to 10 V, allowing configurations such as 0 V to 10 V or –2.5 V to +7.5 V, provided absolute pin limits (–0.5 V to VCC + 0.5 V) are respected. Clamp diodes enable safe overvoltage tolerance when current limiting is applied.
Does the 74HCT4051D/AUJ require both VCC and VEE supplies to operate?
Yes - the 74HCT4051D/AUJ requires both VCC and VEE for full ±5 V analog operation. VEE may be tied to GND only if unipolar analog signals (0 V to VCC) are used; however, doing so forfeits the device's logic-level translation capability and reduces analog range. For true bipolar signal routing or TTL-compatible control, separate VCC and VEE rails are mandatory, as confirmed in the recommended operating conditions table.
What is the typical ON resistance of the 74HCT4051D/AUJ and how does it vary with supply conditions?
The 74HCT4051D/AUJ has a typical ON resistance of 70 Ω at VCC = 4.5 V and VEE = –4.5 V, measured at mid-rail (Vis = VCC/2). At VCC = 5.5 V and VEE = 0 V, RON drops to ~65 Ω. Resistance increases toward the rails - e.g., RON(rail) is 65 Ω max at VCC = 4.5 V, VEE = –4.5 V - and rises with temperature, reaching 130 Ω max at +125 °C under same bias. This variation directly impacts gain accuracy and THD in precision analog paths.
Can the 74HCT4051D/AUJ be used in a single-supply configuration?
Yes, the 74HCT4051D/AUJ can operate with VEE = GND (0 V), enabling unipolar analog signal routing from 0 V to VCC. However, this configuration disables its key logic-level translation feature and restricts analog range to 0–5.5 V. Input thresholds remain TTL-compatible (VIH ≥ 2.0 V), but ON resistance increases near the rails, and distortion rises above 1 % for large-swing signals. For best performance with ±5 V signals, dual-supply operation is required.
How does the enable (E) pin function and what happens when it is left floating?
The E pin is an active-LOW enable: when HIGH, all internal switches are fully OFF (isolation > –50 dB); when LOW, channel selection via S0–S2 becomes active. Leaving E floating is not permitted - the pin has no internal pull-up/down and may float to an indeterminate logic level, causing unpredictable switching behavior or partial conduction. External pull-down (to GND) or active driving is required for deterministic operation of the 74HCT4051D/AUJ.
74HCT4051D/AUJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 120Ohm
- Channel-to-Channel Matching (ΔRon):
- 6Ohm
- Voltage - Supply, Single (V+):
- 4.5V ~ 5.5V
- Voltage - Supply, Dual (V±):
- ±1V ~ 5V
- Switch Time (Ton, Toff) (Max):
- 39ns, 32ns
- -3db Bandwidth:
- 180MHz
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 3.5pF
- Current - Leakage (IS(off)) (Max):
- 400nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
74HCT4051D/AUJ FAQ
1.How can I place an order for 74HCT4051D/AUJ through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT4051D/AUJ 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 74HCT4051D/AUJ reliable?
The price and inventory of 74HCT4051D/AUJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT4051D/AUJ is usually 5 days.
3.What payment methods are accepted for 74HCT4051D/AUJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT4051D/AUJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT4051D/AUJ?
74HCT4051D/AUJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT4051D/AUJ 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 74HCT4051D/AUJ?
For technical support, including 74HCT4051D/AUJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT4051D/AUJ requirements.
6.How does Aetrix verify that 74HCT4051D/AUJ is sourced from the original manufacturer or authorized distributors?
All 74HCT4051D/AUJ 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 74HCT4051D/AUJ meets industry standards.
7.What is the process for return or replacement of 74HCT4051D/AUJ?
All 74HCT4051D/AUJ units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT4051D/AUJ, 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 74HCT4051D/AUJ part is unused and in its original packaging.
Return procedure for 74HCT4051D/AUJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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