CD74HC151M Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments CD74HC151M is a high-speed CMOS 8:1 single multiplexer in a 16-pin SOIC package, selecting one of 8 data inputs via 3 binary address lines with 5.2 mA output drive and 50 pF load capability. Supports 2 V to 6 V supply range for flexible logic interfacing. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC151M Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Single 8:1 multiplexer with 3-bit binary address select, routing any of 8 data inputs to one output for bus reduction and signal routing applications
- HC/UH family CMOS with 2 V to 6 V supply range and 5.2 mA output drive, compatible with both 3.3 V and 5 V logic systems
- Complementary Q and Q-bar outputs allow both true and inverted data selection from a single IC, eliminating an external inverter gate in decoder circuits
- 16-pin SOIC (R-PDSO-G16) with 50 pF load rating enables use in high-density SMT designs with standard PCB routing rules
Applications
The CD74HC151M is widely used in signal routing circuits where 8 analog or digital data sources must be time-multiplexed onto a single data line controlled by a 3-bit address from a microcontroller or FPGA. It is also applied in data selector circuits, function generators that combine multiple binary input conditions, and keyboard scanning matrices where 8 key inputs per multiplexer reduce the GPIO pin count on the host MCU. Its complementary outputs make it a compact solution for generating both true and inverted logic signals in programmable logic glue circuits.
Specifications
| YTEOL | 0 |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | MULTIPLEXER |
| Max I(ol) | 0.0052A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Number of Inputs | 8 |
| Number of Outputs | 1 |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 43ns |
| Propagation Delay (tpd) | 280ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74HC151M:
Multiplexer, HC Series, 1-Func, 8 Line Input, 1 Line Output, Complementary Output, CMOS, PDSO16
Frequently Asked Questions
How many inputs can the CD74HC151M select from, and how is the selection controlled?
The CD74HC151M is an 8:1 multiplexer that selects one of 8 data inputs labeled I0 through I7. Selection is controlled by 3 binary address pins A, B, and C. The 3-bit address provides 8 unique states (000 through 111), each mapping to one input, and the selected input value appears at the complementary Q and Q-bar outputs simultaneously.
What output drive current does the CD74HC151M provide, and what load conditions is it characterized for?
The CD74HC151M specifies a maximum output low current of 5.2 mA and is characterized with a 50 pF load capacitance. This drive strength is sufficient to directly interface with several CMOS logic gate inputs on the same PCB trace without requiring an additional buffer, supporting typical fan-out of 4 to 8 standard HC-family inputs at 3.3 V or 5 V.
How can a designer use CD74HC151M to reduce GPIO pin count on a microcontroller when reading 8 digital sensors?
A designer can connect 8 sensor outputs to the I0-I7 inputs of the CD74HC151M and use only 3 GPIO address lines plus 1 GPIO data input from the MCU. Cycling the address lines through all 8 states (000 to 111) in software reads each sensor sequentially, reducing the sensor interface from 8 GPIO pins to 4 GPIO pins and freeing 4 pins for other peripherals.
What supply voltage range does the CD74HC151M support, and what logic families can it interface with?
The CD74HC151M operates from 2 V to 6 V supply, covering both 3.3 V and 5 V logic systems without level shifting. It interfaces directly with HC, HCT, LVTTL, and standard CMOS logic families. When powered at 5 V its input high threshold is approximately 3.5 V, and when powered at 3.3 V the threshold drops to approximately 2.3 V, enabling flexible mixed-voltage board designs.
What advantage do the complementary Q and Q-bar outputs of the CD74HC151M provide in logic circuit designs?
The Q output presents the selected input data in true (non-inverted) form, while Q-bar provides the logical complement simultaneously. This eliminates the need for a separate inverter gate when both polarities of the selected signal are needed downstream, saving one IC and reducing propagation delay by one gate stage compared to externally inverting the Q output.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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