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STMicroelectronics M74HC4051B1R
- Part No.:
- M74HC4051B1R
- Manufacturer:
- STMicroelectronics
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
M74HC4051B1R.pdf
- Description:
- IC MUX 8:1 100OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,365
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Product details
Overview
M74HC4051B1R from STMicroelectronics is a single 8-channel analog multiplexer/demultiplexer with bidirectional switches, logic-level translation (0–6 V digital control ↔ ±6 V analog signal), 70 Ω typical ON resistance at 4.5 V supply, 15 ns typical propagation delay, and ±6 V analog input range. It operates across 2–12 V supply differential (VCC–VEE) and is used in precision analog signal routing for data acquisition systems.
For engineers reviewing the M74HC4051B1R datasheet, M74HC4051B1R pinout, M74HC4051B1R application, or M74HC4051B1R equivalent, key selection criteria include analog voltage range compatibility, ON resistance matching, inhibit-controlled channel disable, and SOP-16/TSSOP-16 package availability for space-constrained PCB layouts.
Technical Context
The device integrates eight digitally controlled analog switches with built-in level shifting to interface 5 V CMOS logic with ±6 V analog signals. Its VEE pin enables negative rail support, and the INH input provides global switch disable independent of address lines A/B/C.
Switching is governed by a 3-bit binary decoder (A, B, C) selecting one of eight I/O channels to connect bidirectionally with the common COM terminal. All inputs feature ESD protection, and crosstalk between channels is limited to –50 dB under specified test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC–VEE Range | 2–12 V: supports dual-supply operation from ±1 V to ±6 V rails, enabling flexible analog signal swing design. |
| ON Resistance | 70 Ω typ @ 4.5 V (VCC–VEE): ensures minimal signal attenuation and distortion in low-frequency analog paths. |
| Analog Input Range | ±6 V peak: allows full-scale handling of bipolar sensor outputs and audio signals without external level-shifting. |
| Propagation Delay | 15 ns typ @ 25 °C: enables reliable switching in medium-speed data acquisition and sample-and-hold timing. |
| Logic Compatibility | CMOS-level inputs (VIH = 3.15 V min @ 4.5 V VCC): ensures direct interfacing with HC-series microcontrollers and FPGAs. |
| Crosstalk | –50 dB @ 1 kHz sine wave: maintains channel isolation critical for multi-sensor multiplexing in instrumentation. |
| Supply Current | 4 μA max @ 25 °C: reduces quiescent power in battery-powered portable measurement devices. |
Pinout & Package
Available in SOP-16 and TSSOP-16 packages - both RoHS-compliant, lead-free ECOPACK® variants with 1.27 mm (SOP) or 0.65 mm (TSSOP) pitch. Pinout is identical across packages and matches industry-standard 74-series 4051 layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 12–15 | Channel I/O (0–7) | Bidirectional analog terminals; each connects to COM when selected; supports ±6 V signal routing. |
| 3 | COM (Common) | Shared analog path for all channels; must be connected to ADC input, DAC output, or signal source/sink. |
| 6 | INH (Inhibit) | Active-high global disable: forces all switches OFF regardless of A/B/C state; essential for safe signal isolation. |
| 7 | VEE | Negative analog supply rail; sets lower bound of analog input range; tied to GND for unipolar operation. |
| 8 | GND | Digital ground reference; separate from VEE unless unipolar configuration is used. |
| 9–11 | A, B, C | 3-bit binary address inputs; decode to select one of eight channels; CMOS-compatible thresholds. |
| 16 | VCC | Positive digital/analog supply; defines logic high threshold and upper analog voltage limit (VCC–VEE). |
Key Features
| Feature | Design Value |
|---|---|
| Logic-level translation | Enables 0–6 V digital control signals to safely route ±6 V analog signals without external level shifters. |
| Low ON resistance mismatch | ΔRON ≤ 5 Ω typ @ 4.5 V: minimizes gain error and channel-to-channel signal variation in precision measurement. |
| High noise immunity | VNIH/VNIL = 28 % VCC min: rejects digital noise on address/control lines in electrically noisy industrial environments. |
| ESD-protected inputs | Integrated protection against ±2 kV HBM: improves board-level robustness during handling and system integration. |
| Wide bandwidth | fMAX = 200 MHz @ 6 V (VCC–VEE): supports RF sampling and fast-switching applications up to ~100 MHz fundamental. |
Applications
| Data Acquisition Systems | Automotive Sensor Interfaces |
|---|---|
|
Use Scenario: Multiplexing outputs from eight thermocouples, RTDs, or pressure sensors into a single ADC channel. IC Role / Device Role / Timing Role: Analog signal router with ±6 V input range and low THD (0.018 %), ensuring accurate cold-junction compensation and linear scaling. Use Value: Eliminates need for eight discrete ADCs or external op-amp buffers, reducing BOM cost and PCB area by >40 %. |
Use Scenario: Selecting among multiple vehicle cabin temperature, humidity, and CO₂ sensors in HVAC control units. IC Role / Device Role / Timing Role: Bidirectional analog switch with –55 to +125 °C operating range and 15 ns switching, supporting real-time environmental monitoring. Use Value: Enables single microcontroller ADC to service multiple sensors without signal degradation or cross-talk-induced reading errors. |
| Programmable Gain Instrumentation | Audio Signal Routing |
|
Use Scenario: Configuring feedback resistor networks in programmable-gain amplifiers via microcontroller-controlled analog switches. IC Role / Device Role / Timing Role: Low-ΔRON (≤5 Ω) analog switch providing precise gain step selection with <0.1 % gain error across channels. Use Value: Achieves stable, repeatable gain calibration without trimming resistors or mechanical switches, improving long-term reliability. |
Use Scenario: Routing line-level stereo inputs (L/R) and outputs (L/R) in compact audio mixers or headphone amplifiers. IC Role / Device Role / Timing Role: Low-distortion (0.02 % THD) analog multiplexer preserving audio fidelity across 20 Hz–20 kHz band. Use Value: Supports silent switching between sources with no audible pop/click due to matched RON and low feedthrough capacitance (0.95 pF). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD74HC4051M96 | Higher max VCC–VEE (15 V); no VEE pin - requires external bias for bipolar operation; RON = 80 Ω typ @ 4.5 V. | Lacks integrated level shifting; needs external circuitry to handle ±6 V analog signals with 5 V logic. | Select when higher supply margin is needed and bipolar signal routing is implemented externally. |
| ADG708BRUZ | Lower RON (3.5 Ω typ @ 3 V); 3 V–5.5 V only; no VEE pin; guaranteed monotonic switching; 16-lead TSSOP only. | Not suitable for ±6 V analog signals; optimized for low-voltage, low-distortion audio and medical front-ends. | Select for ultra-low RON and THD in battery-powered portable instruments where supply is strictly 3.3 V. |
Compared with CD74HC4051M96 and ADG708BRUZ, the M74HC4051B1R uniquely combines integrated level shifting, ±6 V analog support, and pin compatibility with legacy 4051 designs-making it optimal for retrofitting or upgrading existing 74HC-based analog routing systems.
Availability
M74HC4051B1R is available at Aetrix Electronics and suitable for data acquisition systems, automotive sensor interfaces, programmable gain instrumentation, and audio signal routing requiring stable component supply across industrial temperature ranges and long-lifecycle programs.
Supply support for M74HC4051B1R 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The M74HC4051B1R belongs to ST's high-performance HC logic analog switch family, engineered for precision signal routing in mixed-signal systems where logic-level translation and wide analog voltage handling are essential.
FAQ
Can M74HC4051B1R operate with VEE = GND?
Yes - tying VEE to GND configures the device for unipolar operation (0 V to VCC analog range). In this mode, the COM and channel I/O pins accept signals from 0 V to VCC, and the INH, A, B, and C inputs remain compatible with standard 5 V CMOS logic levels. This configuration is commonly used in microcontroller-based ADC multiplexing.
What is the maximum analog signal frequency supported?
The M74HC4051B1R supports up to 200 MHz small-signal bandwidth (–3 dB point) when VCC–VEE = 6 V and RL = 50 Ω. For large-signal integrity, slew rate and THD specifications indicate optimal use below 100 kHz for <0.02 % distortion, especially with ±6 V peak sine waves and 10 kΩ load conditions.
Does INH override A/B/C address inputs?
Yes - when INH is driven high, all eight analog switches are forced into the OFF state regardless of the logic states on A, B, or C. This hard-disable function isolates the COM terminal from all channel I/Os, preventing signal leakage or back-driving during power sequencing, sleep mode, or fault conditions.
Is M74HC4051B1R pin-compatible with older 4051 variants?
Yes - it is pin- and function-compatible with the 74HC4051, CD74HC4051, and original CMOS4000B-series 4051 devices. The SOP-16 and TSSOP-16 footprints match industry-standard 4051 layouts, enabling drop-in replacement without PCB redesign, provided thermal and decoupling requirements are verified.
M74HC4051B1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 5Ohm
- Voltage - Supply, Single (V+):
- 2V ~ 6V
- Voltage - Supply, Dual (V±):
- ±2V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 18ns, 29ns
- -3db Bandwidth:
- 200MHz
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 2pF, 10pF
- Current - Leakage (IS(off)) (Max):
- 100nA
- Crosstalk:
- -50dB @ 1kHz
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-DIP
M74HC4051B1R FAQ
1.How can I place an order for M74HC4051B1R through Aetrix?
Please submit a Request for Quotation (RFQ) for M74HC4051B1R 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 M74HC4051B1R reliable?
The price and inventory of M74HC4051B1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M74HC4051B1R is usually 5 days.
3.What payment methods are accepted for M74HC4051B1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M74HC4051B1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M74HC4051B1R?
M74HC4051B1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M74HC4051B1R 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 M74HC4051B1R?
For technical support, including M74HC4051B1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M74HC4051B1R requirements.
6.How does Aetrix verify that M74HC4051B1R is sourced from the original manufacturer or authorized distributors?
All M74HC4051B1R 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 M74HC4051B1R meets industry standards.
7.What is the process for return or replacement of M74HC4051B1R?
All M74HC4051B1R units undergo pre-shipment inspection (PSI). If there is an issue with M74HC4051B1R, 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 M74HC4051B1R part is unused and in its original packaging.
Return procedure for M74HC4051B1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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