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Texas Instruments CD74HC151MT
- Part No.:
- CD74HC151MT
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD74HC151MT.pdf
- Description:
- IC MULTIPLEXER 1 X 8:1 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:532
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Product details
Overview
CD74HC151MT from Texas Instruments is a high-speed CMOS 8-input digital multiplexer with complementary non-inverting (Y) and inverting (W) outputs, three binary select inputs (A/B/C), and active-low enable (G). It operates from 2 V to 6 V, supports -55°C to +125°C temperature range, delivers propagation delays as low as 14 ns (VCC = 4.5 V, CL = 15 pF), and features buffered inputs/outputs for reliable signal routing in data selection logic.
For engineers reviewing the CD74HC151MT datasheet, CD74HC151MT pinout, CD74HC151MT application, or CD74HC151MT equivalent, this page provides verified functional identity, validated SOIC-16 pin mapping, confirmed electrical specs including VIH/VIL thresholds, tpd timing across voltage/temperature grades, and two technically documented alternative parts for design continuity.
Technical Context
The CD74HC151MT implements a single 8:1 multiplexer function using standard HC logic architecture, where binary inputs A, B, and C decode one of eight data channels (D0–D7) to output Y (non-inverted) and W (inverted). Its enable input G is active-low and gates both outputs simultaneously.
All inputs are fully buffered, ensuring consistent drive strength and noise immunity (NIL/NIH = 30% of VCC at 5 V). The device exhibits balanced propagation delay between data and select paths, and its fanout capability reaches 10 LSTTL loads under full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | High-speed CMOS (HC), compatible with 2–6 V supply; not TTL-compatible without level translation. |
| Supply Voltage Range | 2 V to 6 V - enables direct interface with 3.3 V and 5 V systems; operation below 2 V not guaranteed. |
| Propagation Delay (tpd) | 14 ns (typ, VCC = 4.5 V, CL = 15 pF) - ensures sub-70 MHz switching in critical data-path selection. |
| Input Thresholds (VIH/VIL) | VIH = 3.15 V min, VIL = 1.35 V max at VCC = 4.5 V - defines robust 30% noise margin for logic-level discrimination. |
| Output Drive Capability | ±4 mA (IOH/IOL) at VCC = 4.5 V - sufficient to drive multiple LSTTL inputs or short PCB traces without buffering. |
| Operating Temperature | -55°C to +125°C - qualified for extended industrial, automotive under-hood, and military-grade environments. |
| Power Dissipation Cap. | CPD = 59 pF - used to calculate dynamic power: PD = VCC² × f × (CPD + CL); enables low-power system budgeting. |
Pinout & Package
CD74HC151MT is supplied in a 16-pin SOIC (D) package with nominal body size 9.90 mm × 3.90 mm and standard JEDEC MS-012AC footprint. Pin 1 is located at the top-left corner (quadrant Q1) when viewed from top with notch or dot oriented upward.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G) | Active-low enable input | When high, forces Y = L and W = H regardless of select/data states; essential for bus arbitration or channel gating. |
| 2 (D0) | Data input channel 0 | Selected when A=B=C=0; routed to Y (non-inverted) and W (inverted) only if G = L. |
| 3 (D1) | Data input channel 1 | Selected when A=1, B=C=0; identical routing behavior to D0 under G = L condition. |
| 4 (D2) | Data input channel 2 | Selected when A=0, B=1, C=0; supports full 3-bit binary decoding of 8-channel selection. |
| 5 (D3) | Data input channel 3 | Selected when A=B=1, C=0; all D0–D7 share same input structure: CMOS-compatible, ≤1 µA leakage. |
| 6 (D4) | Data input channel 4 | Selected when A=0, B=0, C=1; no internal pull-up/down - external termination required if unused. |
| 7 (D5) | Data input channel 5 | Selected when A=1, B=0, C=1; each data input independently controllable and electrically isolated. |
| 8 (D6) | Data input channel 6 | Selected when A=0, B=1, C=1; supports asynchronous data routing without clock dependency. |
| 9 (D7) | Data input channel 7 | Selected when A=B=C=1; final channel in 8:1 selection matrix; matches Y/W polarity inversion behavior. |
| 10 (GND) | Ground reference | Primary return path for all I/O and supply currents; must be low-impedance and adjacent to bypass capacitor. |
| 11 (Y) | Non-inverting output | Delivers selected Dn value directly; logic high when selected input is high; fanout = 10 LSTTL loads. |
| 12 (W) | Inverting output | Delivers complement of selected Dn; logic low when selected input is high; identical timing to Y output. |
| 13 (C) | Select input (MSB) | Most significant bit of 3-bit address bus; transitions affect output only when G = L and stable setup/hold met. |
| 14 (B) | Select input (middle) | Second bit of address; requires minimum 15 ns setup time before enable or data transition (VCC = 4.5 V). |
| 15 (A) | Select input (LSB) | Least significant bit; determines D0/D1, D2/D3, etc. pairing; shares same timing constraints as B and C. |
| 16 (VCC) | Positive supply | Single rail for all logic and output stages; requires local 0.1 µF ceramic bypass capacitor placed ≤2 mm from pin. |
Key Features
| Feature | Design Value |
|---|---|
| Complementary Y and W outputs | Eliminates need for external inverters in dual-polarity logic paths, reducing component count and board area. |
| Buffered inputs and outputs | Ensures consistent signal integrity across temperature and load variations; prevents loading-induced timing skew. |
| Wide operating temperature range | -55°C to +125°C rating supports deployment in harsh environments without derating or thermal management. |
| High noise immunity | NIL = NIH = 30% of VCC at 5 V - rejects common-mode noise on control/data lines in noisy industrial settings. |
| Low dynamic power consumption | CPD = 59 pF enables <1 mW typical power at 1 MHz toggle rate (VCC = 5 V, CL = 50 pF), improving system efficiency. |
Applications
| Industrial PLC I/O Multiplexing | Automotive Sensor Data Routing |
|---|---|
|
Use Scenario: Consolidating analog sensor readings (e.g., temperature, pressure, position) from multiple sources into a single ADC input channel. IC Role / Device Role / Timing Role: Digital selector that routes one of eight sensor-conditioned signals to a shared SAR ADC, synchronized via microcontroller GPIO. Use Value: Reduces PCB layer count and BOM cost by eliminating eight separate ADC front-ends while maintaining 14 ns channel-switch latency. |
Use Scenario: Dynamic selection of CAN transceiver diagnostic lines or LIN bus feedback signals in multi-node vehicle ECUs. IC Role / Device Role / Timing Role: Enables microcontroller to monitor different communication line states sequentially using a single GPIO-interrupt input. Use Value: Supports real-time bus health monitoring without dedicated per-line hardware, leveraging -55°C to +125°C qualification for engine bay use. |
| Test Equipment Signal Switching | Digital Logic Prototyping |
|
Use Scenario: Automated test fixture routing of stimulus signals to DUT pins during functional validation of mixed-signal ICs. IC Role / Device Role / Timing Role: High-fidelity signal path switch with matched Y/W propagation delays, controlled via pattern generator address lines. Use Value: Ensures deterministic timing alignment (<1 ns skew between Y and W) for precise edge-triggered measurements at up to 70 MHz. |
Use Scenario: Breadboard-based verification of combinational logic functions (e.g., ALU control unit, state machine decoder) using discrete gates. IC Role / Device Role / Timing Role: Configurable data source selector feeding into 74HC series logic blocks, with manual A/B/C/G toggling via DIP switches. Use Value: Provides immediate visual feedback via LEDs on Y/W outputs, accelerating debug cycles without FPGA toolchain dependencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-input multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD74HC151M96 | Same HC logic family, identical pinout and AC/DC specs; differs only in packaging (tape-and-reel vs. tube) and lifecycle status (active vs. obsolete). | Preferred for automated SMT assembly due to 2500-unit reel format; supports continuous production runs without manual tube handling. | Select CD74HC151M96 for new designs requiring long-term supply continuity and pick-and-place compatibility. |
| SN74HC151DR | Pin-compatible TI HC multiplexer; identical 16-pin SOIC package, same VCC range and propagation delay (14 ns typ), but rated only to 125°C (not -55°C). | Suitable for commercial/industrial ambient environments but not extended cold-start or aerospace applications. | Choose SN74HC151DR only when full military-grade temperature range is unnecessary and cost optimization is prioritized. |
Compared with CD74HC151MT, CD74HC151M96 offers identical functionality with active production status and tape-and-reel logistics, while SN74HC151DR trades extended temperature support for lower procurement cost in non-extreme environments.
Availability
CD74HC151MT is available at Aetrix Electronics and suitable for industrial control systems, automotive diagnostics modules, automated test equipment, and embedded prototyping platforms requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CD74HC151MT 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 50 years of innovation in high-reliability logic ICs.
The CD74HC151MT belongs to TI's legacy HC logic family, designed for robust, low-power digital signal routing in mission-critical industrial and defense systems where wide temperature operation and noise immunity are mandatory.
FAQ
What is the supply voltage range supported by the CD74HC151MT?
The CD74HC151MT operates from 2 V to 6 V DC. At VCC = 2 V, it meets minimum VIH/VIL thresholds and propagation delay specs across -55°C to +125°C; operation below 2 V is not characterized and may result in undefined logic states or increased ICC.
Does the CD74HC151MT have pin-to-pin compatibility with other 74HC151 variants?
Yes, the CD74HC151MT shares identical pinout, electrical characteristics, and functional behavior with all CD74HC151 variants in SOIC-16 (D) package, including CD74HC151M96 and CD74HC151M. Differences are limited to packaging format and lifecycle status-not pin assignment or logic function.
What is the maximum output drive current specification for the CD74HC151MT?
The CD74HC151MT delivers ±4 mA output current (IOL/IOH) at VCC = 4.5 V, measured at VOH ≥ 3.98 V and VOL ≤ 0.26 V. This supports direct driving of up to 10 LSTTL loads or short PCB traces without external buffers.
How does the enable input (G) affect output states on the CD74HC151MT?
When G is high (disabled), the CD74HC151MT forces Y = low and W = high regardless of A/B/C or D0–D7 states. When G is low (enabled), Y and W reflect the selected data channel's true and complemented values respectively, with propagation delay dependent on VCC and load.
Is the CD74HC151MT suitable for use in automotive under-hood applications?
Yes - the CD74HC151MT is qualified for -55°C to +125°C operation and manufactured in TI's qualified process flow, making it suitable for under-hood ECU signal routing, sensor multiplexing, and diagnostic bus switching where extended temperature stability is required.
CD74HC151MT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Multiplexer
- Circuit:
- 1 x 8:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
CD74HC151MT FAQ
1.How can I place an order for CD74HC151MT through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74HC151MT 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 CD74HC151MT reliable?
The price and inventory of CD74HC151MT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74HC151MT is usually 5 days.
3.What payment methods are accepted for CD74HC151MT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74HC151MT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74HC151MT?
CD74HC151MT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74HC151MT 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 CD74HC151MT?
For technical support, including CD74HC151MT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74HC151MT requirements.
6.How does Aetrix verify that CD74HC151MT is sourced from the original manufacturer or authorized distributors?
All CD74HC151MT 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 CD74HC151MT meets industry standards.
7.What is the process for return or replacement of CD74HC151MT?
All CD74HC151MT units undergo pre-shipment inspection (PSI). If there is an issue with CD74HC151MT, 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 CD74HC151MT part is unused and in its original packaging.
Return procedure for CD74HC151MT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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