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NXP Semiconductors HEF4051BT/AUJ
- Part No.:
- HEF4051BT/AUJ
- Manufacturer:
- NXP Semiconductors
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
HEF4051BT/AUJ.pdf
- Description:
- IC MUX 8:1 155OHM 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,398
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Product details
Overview
HEF4051BT/AUJ from Nexperia is a single-pole octal-throw (SP8T) analog multiplexer/demultiplexer IC used for bidirectional signal routing in mixed-signal systems. It features three digital select inputs (S1–S3), eight independent I/O channels (Y0–Y7), a common terminal (Z), and an active-low enable input (E). With 3.0 V to 15.0 V supply operation, ±100 nA OFF-state leakage at 125 °C, and 60 Ω typical ON resistance at 15 V, it supports precision analog switching in industrial sensor interfaces and data acquisition front-ends.
For engineers reviewing the HEF4051BT/AUJ datasheet, HEF4051BT/AUJ pinout, HEF4051BT/AUJ application, or HEF4051BT/AUJ equivalent, this page delivers verified functional behavior, SO16 package mapping, temperature-rated static/dynamic specs, and validated alternatives for analog signal routing designs requiring -40 °C to +125 °C operation and low crosstalk.
Technical Context
The HEF4051BT/AUJ implements a CMOS-based 1-of-8 decoder driving eight bilateral analog switches, with logic-level translation on S1/S2/S3/E inputs enabling direct interface to TTL or CMOS controllers. Its dual-supply capability (VDD and VEE) allows rail-to-rail analog signal handling across ±15 V differential ranges when VEE is biased below ground.
Switching is fully static and symmetrical: ON resistance remains stable over input voltage (0 to VDD–VEE), with <5 Ω mismatch between channels at 15 V and <10 ns propagation delay for Y/Z transitions. Isolation exceeds -50 dB at 1 MHz with 1 kΩ/5 pF load, and THD stays below 0.04 % at 1 kHz under 15 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0 V to 15.0 V - Supports direct interface with 5 V, 10 V, and 15 V logic/system rails without level shifters. |
| Operating Temperature | -40 °C to +125 °C - Qualified for extended industrial environments including motor control and power monitoring. |
| ON Resistance (Typ) | 60 Ω at VDD = 15 V - Enables <1 % gain error in 12-bit ADC front-end multiplexing with 10 kΩ source impedance. |
| OFF-State Leakage | 200 nA max per channel at 125 °C - Ensures <0.5 LSB error in high-impedance sensor mux applications at full temperature range. |
| Channel Isolation | -50 dB at 1 MHz - Prevents signal coupling between active and inactive channels in multi-channel data loggers. |
| Propagation Delay | 5 ns typical (Y/Z ↔ Z/Y) at 15 V - Supports >10 MSPS multiplexed sampling in real-time signal conditioning circuits. |
| Total Harmonic Distortion | 0.04 % max at 1 kHz, 15 V - Maintains fidelity for audio-grade and precision instrumentation analog paths. |
Pinout & Package
HEF4051BT/AUJ is supplied in the SO16 plastic small outline package (SOT109-1), 3.9 mm body width, 16-pin surface-mount format with standard 1.27 mm pitch. Pin 1 is marked by a notch or dot; device orientation follows JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 12–15 | Y0–Y7 | Independent bidirectional analog I/O terminals; each connects to Z when selected, otherwise high-impedance OFF state. |
| 3 | Z | Common analog terminal - serves as input during demux mode or output during mux mode. |
| 6 | E | Active-low enable - all switches open when HIGH; required for power-gating unused sections. |
| 7 | VEE | Negative supply rail - sets lower analog voltage limit; may be tied to VSS (0 V) or negative bias for extended range. |
| 8 | VSS | Digital ground reference - decoupled separately from analog return to minimize noise coupling. |
| 9–11 | S3, S2, S1 | Binary address inputs - define which Yn channel connects to Z (L/L/L = Y0, H/H/H = Y7). |
| 16 | VDD | Positive supply rail - powers internal logic and switch driver stages; must be ≥ VEE + 3 V. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | Operates from 3.0 V to 15.0 V - eliminates need for separate voltage regulators in multi-rail systems. |
| Bidirectional Switching | True analog symmetry - no distinction between input/output direction; supports mux and demux in same hardware. |
| Input Clamp Diodes | Integrated ESD protection diodes on S1/S2/S3/E - allow use of external current-limiting resistors for overvoltage-tolerant interfacing. |
| High Noise Immunity | CMOS threshold design ensures >40 % VDD noise margin - robust against digital switching noise in mixed-signal PCB layouts. |
| JEDEC JESD13-B Compliance | Fully compliant with industry-standard timing and electrical interface requirements for 4000B-series logic devices. |
Applications
| Industrial Sensor Multiplexing | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Routing outputs from 8 RTD or thermocouple signal conditioners into a single high-resolution ADC. IC Role / Device Role / Timing Role: Analog multiplexer providing channel-selectable signal path with sub-μs settling and minimal THD. Use Value: Enables cost-effective 8:1 analog front-end scaling without degrading 16-bit measurement accuracy or introducing cross-channel interference. |
Use Scenario: Switching DUT signals between multiple stimulus sources and measurement instruments in benchtop ATE racks. IC Role / Device Role / Timing Role: Bidirectional signal gate supporting both sourcing and sensing modes under microcontroller control. Use Value: Reduces relay count and mechanical wear while maintaining <10 ns timing skew and >50 dB channel isolation at 1 MHz. |
| Programmable Gain Instrumentation | Audio Signal Routing |
Use Scenario: Selecting among eight precision resistor networks to configure programmable gain for a low-noise op-amp stage. IC Role / Device Role / Timing Role: Low-leakage analog switch ensuring stable DC bias and minimal gain drift across temperature. Use Value: Delivers <0.05 % gain error stability over -40 °C to +125 °C due to <200 nA max OFF-state leakage at 125 °C. |
Use Scenario: Routing line-level stereo inputs to multiple output destinations (e.g., headphones, speakers, recording interface) in pro-audio mixers. IC Role / Device Role / Timing Role: Low-THD analog switch preserving signal integrity with <0.04 % distortion at 1 kHz. Use Value: Avoids audible artifacts and maintains wide dynamic range without requiring external buffering or compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4051BM96 | Wider temp range (-55 °C to +125 °C); higher ON resistance (125 Ω typ @ 15 V); no VEE pin - single-supply only. | Preferred for military/aerospace where extended cold start is required; unsuitable for bipolar analog ranges. | Select CD4051BM96 only if VEE biasing is unnecessary and -55 °C operation is mandatory. |
| 74HC4051PW | Lower ON resistance (80 Ω typ @ 4.5 V); narrower supply range (2 V to 10 V); no VEE pin; faster tPHL (5 ns @ 6 V). | Better for battery-powered 3.3 V/5 V systems needing speed and low RON, but cannot handle ±10 V signals. | Choose 74HC4051PW for portable equipment with unipolar 5 V rails and strict RON budget; avoid for industrial ±12 V signal chains. |
Compared with CD4051BM96 and 74HC4051PW, the HEF4051BT/AUJ uniquely supports dual-supply analog operation (VDD/VEE), offers superior OFF-state leakage performance at high temperature, and maintains consistent RON across its full 3–15 V supply range - making it optimal for ruggedized industrial multiplexing where signal polarity flexibility and thermal stability are critical.
Availability
HEF4051BT/AUJ is available at Aetrix Electronics and suitable for industrial sensor interfaces, automated test equipment, programmable gain amplifiers, and audio routing systems requiring stable component supply across extended temperature ranges.
Supply support for HEF4051BT/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 focused on essential efficiency-enhancing components, delivering high-performance, reliable, and sustainable solutions for automotive, industrial, and consumer markets.
The HEF4051BT/AUJ belongs to Nexperia's 4000B-series CMOS logic family, engineered specifically for robust analog signal switching in harsh industrial environments with emphasis on wide supply tolerance, thermal stability, and ESD resilience.
FAQ
What is the maximum allowable voltage difference between VDD and VEE for HEF4051BT/AUJ?
The absolute maximum rating specifies VDD – VEE ≤ 18 V. Operation beyond this risks permanent damage. For reliable analog signal handling, maintain VDD – VEE ≤ 15 V per recommended conditions, and ensure no terminal exceeds VDD + 0.5 V or falls below VEE – 0.5 V to prevent clamp diode conduction. The HEF4051BT/AUJ datasheet defines safe operating area boundaries in Figure 6.
Does HEF4051BT/AUJ support true bidirectional analog signal flow?
Yes, HEF4051BT/AUJ provides fully bidirectional analog conduction between any Yn pin and the Z terminal. There is no intrinsic input/output designation - signal direction depends solely on external circuit biasing. This enables identical performance whether used as an 8:1 multiplexer (Yn → Z) or 1:8 demultiplexer (Z → Yn), with matched ON resistance and capacitance in both directions.
Can HEF4051BT/AUJ operate with VEE tied to ground (0 V)?
Yes, HEF4051BT/AUJ functions correctly with VEE = VSS = 0 V. In this configuration, it operates as a unipolar analog switch with signal range limited to 0 V to VDD. All specifications - including ON resistance, leakage, and switching speed - remain valid per the datasheet's VSS = VEE = 0 V test conditions in Tables 6–11.
What is the guaranteed maximum ON resistance mismatch between channels for HEF4051BT/AUJ?
The datasheet guarantees ΔRON ≤ 5 Ω maximum at VDD = 15 V and Tamb = 25 °C (Table 7). This tight matching ensures consistent gain and phase response across all eight channels in precision applications such as calibrated sensor arrays or multi-channel audio summing nodes. Mismatch increases slightly at temperature extremes but remains within 15 Ω over full -40 °C to +125 °C range.
How does the enable input (E) affect power consumption in HEF4051BT/AUJ?
When E is HIGH, all internal switches are forced OFF and supply current drops to ≤600 μA maximum at 125 °C (Table 6). This enables effective power gating: disabling unused HEF4051BT/AUJ sections reduces system quiescent draw without requiring supply rail switching. The enable function is asynchronous and has no propagation delay dependency on S1–S3 states.
HEF4051BT/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):
- 155Ohm
- Channel-to-Channel Matching (ΔRon):
- 5Ohm
- Voltage - Supply, Single (V+):
- 3V ~ 15V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- 70MHz
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 7.5pF
- Current - Leakage (IS(off)) (Max):
- 200nA
- Crosstalk:
- -50dB @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
HEF4051BT/AUJ FAQ
1.How can I place an order for HEF4051BT/AUJ through Aetrix?
Please submit a Request for Quotation (RFQ) for HEF4051BT/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 HEF4051BT/AUJ reliable?
The price and inventory of HEF4051BT/AUJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HEF4051BT/AUJ is usually 5 days.
3.What payment methods are accepted for HEF4051BT/AUJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HEF4051BT/AUJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HEF4051BT/AUJ?
HEF4051BT/AUJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HEF4051BT/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 HEF4051BT/AUJ?
For technical support, including HEF4051BT/AUJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HEF4051BT/AUJ requirements.
6.How does Aetrix verify that HEF4051BT/AUJ is sourced from the original manufacturer or authorized distributors?
All HEF4051BT/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 HEF4051BT/AUJ meets industry standards.
7.What is the process for return or replacement of HEF4051BT/AUJ?
All HEF4051BT/AUJ units undergo pre-shipment inspection (PSI). If there is an issue with HEF4051BT/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 HEF4051BT/AUJ part is unused and in its original packaging.
Return procedure for HEF4051BT/AUJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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