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STMicroelectronics M74HCT4051TTR
- Part No.:
- M74HCT4051TTR
- Manufacturer:
- STMicroelectronics
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M74HCT4051TTR.pdf
- Description:
- IC MUX 8:1 120OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,504
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Product details
Overview
M74HCT4051TTR from STMicroelectronics is a single 8-channel analog multiplexer/demultiplexer with TTL-compatible digital control, ±6 V analog input range, 70 Ω typical on-resistance at 4.5 V supply, 13 ns typical propagation delay, and integrated level-shifting for mixed-signal interfacing in data acquisition systems.
For engineers reviewing the M74HCT4051TTR datasheet, M74HCT4051TTR pinout, M74HCT4051TTR application, or M74HCT4051TTR equivalent, key selection criteria include bidirectional switch capability, VEE-referenced analog rail support, INH-enabled channel disable, and TSSOP-16 package compatibility with high-density PCB layouts.
Technical Context
The device implements eight bidirectional analog switches controlled by three binary-select inputs (A/B/C) and an active-high inhibit (INH) terminal, enabling precise routing of ±6 V analog signals under 0–6 V TTL-level logic control. Its C2MOS silicon gate process delivers low power consumption (4 µA max ICC) and high noise immunity.
Level-shifting circuitry allows independent analog voltage rails (VCC = 4.5–5.5 V, VEE = –6 to 0 V), supporting true bipolar signal handling without external biasing. Switch ON resistance matching (∆RON ≤ 18 Ω typ.) ensures channel-to-channel gain consistency in precision multiplexed sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel count | 8 bidirectional analog switches, enabling flexible signal routing in multi-sensor or multi-source systems |
| On-resistance (RON) | 70 Ω typ. at VCC=4.5 V, VEE=GND - minimizes signal attenuation and gain error in precision analog paths |
| Analog voltage range | ±6 V peak - supports full-scale bipolar instrumentation signals without external level translation |
| Propagation delay | 13 ns typ. - enables high-speed switching in real-time sampling and test equipment |
| Supply range (VCC–VEE) | 2 V to 12 V - accommodates diverse system rails including 5 V logic with –5 V analog reference |
| Input leakage (IOFF) | ±0.06 µA max. at TA=25°C - preserves signal integrity in high-impedance sensor front-ends |
| Crosstalk | –50 dB between switches - prevents interference in simultaneous multi-channel measurement |
Pinout & Package
TSSOP-16 package: 4.9 × 6.4 mm body, 0.65 mm pitch, 1.2 mm max height, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 12–15 | Independent I/O terminals (channels 0–7) | Bidirectional analog signal paths; each connects to COM when selected, otherwise high-impedance off-state |
| 3 | COM (Common) | Shared analog port for all channels; must be connected to ADC input, DAC output, or signal processor interface |
| 6 | INH (Inhibit) | Active-high enable/disable control; pulls all switches open when high, eliminating signal leakage during idle states |
| 7 | VEE | Negative analog supply rail; sets lower bound of analog input range (e.g., –6 V for ±6 V operation) |
| 8 | GND | Digital ground reference; separate from analog return but tied at system star point for noise control |
| 9–11 | A, B, C (Select inputs) | 3-bit binary address decoding; TTL-compatible thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) allow direct MCU GPIO connection |
| 16 | VCC | Positive digital/analog supply; powers internal logic and switch driver stages; requires local 100 nF decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Integrated level shifting | Enables 0–6 V digital control signals to safely route ±6 V analog signals without external translators |
| Low on-resistance mismatch | ∆RON ≤ 18 Ω typ. ensures consistent gain across all 8 channels in calibrated measurement systems |
| TTL-compatible inputs | VIH ≥ 2.0 V / VIL ≤ 0.8 V eliminates need for logic-level translators when interfacing with standard microcontrollers |
| High off-isolation | –50 dB feed-through attenuation at 1 MHz prevents crosstalk between inactive channels in multi-signal environments |
| Low quiescent current | ICC = 4 µA max. at 25°C supports battery-powered portable instrumentation with extended standby life |
Applications
| Data Acquisition Systems | Automated Test Equipment (ATE) |
|---|---|
|
Use Scenario: Multiplexing outputs from 8 thermocouples or strain gauges into a single 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Analog signal router with channel-select timing synchronized to ADC conversion start pulse. Use Value: Eliminates need for 8 parallel ADCs; ±6 V range accommodates unconditioned sensor outputs; low RON preserves resolution. |
Use Scenario: Routing calibration reference voltages and DUT signals to shared precision DACs and comparators. IC Role / Device Role / Timing Role: Signal path selector enabling automated stimulus-response sequencing under FPGA control. Use Value: INH pin allows safe reconfiguration between test phases; low crosstalk prevents reference contamination during switching. |
| Medical Instrumentation | Industrial Process Monitoring |
|
Use Scenario: Selecting among ECG electrode pairs for differential amplification in multi-lead patient monitoring. IC Role / Device Role / Timing Role: Biopotential signal switcher with VEE referenced to patient isolation ground to maintain safety compliance. Use Value: ±6 V range handles electrode offset voltages; low distortion (0.02% THD) preserves diagnostic waveform fidelity. |
Use Scenario: Scanning 8 pressure, flow, and temperature transmitters into a central PLC analog input module. IC Role / Device Role / Timing Role: Field-signal aggregator with VEE tied to isolated analog ground to reject common-mode noise on long cables. Use Value: Wide 2–12 V supply range tolerates industrial 24 VDC-derived rails; robust ESD protection withstands factory EMI. |
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 on-resistance (80 Ω typ. at 4.5 V), no built-in level shifter - requires external biasing for ±6 V analog signals | Limited to unipolar or GND-referenced analog ranges unless additional circuitry added | Select when cost sensitivity outweighs bipolar signal support and board space permits level-shifting components |
| ADG1408YRUZ | Lower on-resistance (4.7 Ω typ.), wider bandwidth (180 MHz), but requires ±15 V supplies or dual-rail design | Optimized for high-frequency RF/communications; over-specified for DC–10 kHz sensor multiplexing | Choose only when sub-ohm RON or >100 MHz bandwidth is required; adds complexity and cost for standard DAQ use cases |
Compared with CD74HC4051M96 and ADG1408YRUZ, the M74HCT4051TTR uniquely balances ±6 V analog compatibility, TTL-level control simplicity, and TSSOP-16 footprint - making it optimal for space-constrained, mixed-voltage industrial and medical data loggers where level-shifting integration reduces BOM count and layout risk.
Availability
M74HCT4051TTR is available at Aetrix Electronics and suitable for data acquisition systems, automated test equipment, medical instrumentation, and industrial process monitoring requiring stable component supply and long-term manufacturability assurance.
Supply support for M74HCT4051TTR 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, specializing in automotive, industrial, and power management ICs with broad analog and mixed-signal portfolio coverage.
The M74HCT4051 belongs to ST's legacy HCT logic family, designed specifically for robust analog/digital interface bridging in harsh industrial and medical environments where reliability, wide supply tolerance, and bipolar signal handling are critical.
FAQ
Can M74HCT4051TTR operate with VEE = –5 V and VCC = +5 V?
Yes. The device supports VCC – VEE = 2 V to 12 V, so –5 V at VEE and +5 V at VCC yields a 10 V differential within specification. This configuration enables true ±5 V analog signal routing while maintaining TTL-compatible control inputs referenced to VCC/GND. Ensure VEE is decoupled with a low-ESR capacitor near the pin.
What is the maximum signal frequency supported in the ON state?
At VCC = 4.5 V and VEE = –4.5 V, the –3 dB bandwidth is 190 MHz when measuring from common to switch terminal. For practical analog multiplexing up to 100 kHz (e.g., sensor data acquisition), distortion remains below 0.06% THD, confirming suitability for high-fidelity DC-coupled applications without filtering penalties.
Is the INH pin compatible with 3.3 V logic controllers?
Yes. With VIH(min) = 2.0 V at VCC = 4.5–5.5 V, the INH input reliably recognizes 3.3 V as a valid high level. No level shifter is needed when driven directly from 3.3 V microcontrollers or FPGAs, simplifying interface design and reducing component count in mixed-voltage systems.
How does the device handle overvoltage on I/O pins beyond VCC or below VEE?
Per absolute maximum ratings, I/O pins tolerate VEE – 0.5 V to VCC + 0.5 V. Exceeding this risks latch-up or permanent damage. For ±6 V analog signals, VEE must be set to –6 V (not GND) to ensure the full range falls within safe limits. Internal diode clamps are not rated for sustained overvoltage conditions.
M74HCT4051TTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 120Ohm
- Channel-to-Channel Matching (ΔRon):
- 5Ohm
- Voltage - Supply, Single (V+):
- 4.5V ~ 5.5V
- Voltage - Supply, Dual (V±):
- ±1V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 34ns, 31ns
- -3db Bandwidth:
- 190MHz
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 0.75pF, 5pF
- Current - Leakage (IS(off)) (Max):
- 100nA
- Crosstalk:
- -50dB @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
M74HCT4051TTR FAQ
1.How can I place an order for M74HCT4051TTR through Aetrix?
Please submit a Request for Quotation (RFQ) for M74HCT4051TTR 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 M74HCT4051TTR reliable?
The price and inventory of M74HCT4051TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M74HCT4051TTR is usually 5 days.
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M74HCT4051TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M74HCT4051TTR 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 M74HCT4051TTR?
For technical support, including M74HCT4051TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M74HCT4051TTR requirements.
6.How does Aetrix verify that M74HCT4051TTR is sourced from the original manufacturer or authorized distributors?
All M74HCT4051TTR 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 M74HCT4051TTR meets industry standards.
7.What is the process for return or replacement of M74HCT4051TTR?
All M74HCT4051TTR units undergo pre-shipment inspection (PSI). If there is an issue with M74HCT4051TTR, 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 M74HCT4051TTR part is unused and in its original packaging.
Return procedure for M74HCT4051TTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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