CD74AC157MG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments CD74AC157MG4 is a quad 2-input to 1-output non-inverting multiplexer in the AC logic family, operating at high speed with 50 pF load capacitance in a 16-pin SOIC package. From $0.75 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74AC157MG4 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
What are the key features of CD74AC157MG4?
- Quad 2-to-1 multiplexer with non-inverting outputs provides 4 independent data selection channels in a single 16-pin SOIC device
- Advanced CMOS AC logic family offers high-speed switching with 50 pF output load capacitance for fast digital bus routing
- Single shared select line controls all 4 multiplexer channels simultaneously, simplifying data path switching with one control signal
What is CD74AC157MG4 used for?
The CD74AC157MG4 is used in digital logic designs for data bus selection, signal routing, and address multiplexing in memory interfaces and FPGA expansion boards. Its quad 2-to-1 topology allows four parallel data paths to be switched with a single control line, simplifying multiplexer arrays in high-speed communication interfaces. Engineers deploy it in data acquisition systems, digital test equipment, and bus arbitration logic where compact, high-speed multiplexing between two data sources is needed.
What are the specifications of CD74AC157MG4?
| YTEOL | 0 |
| Family | AC |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | MULTIPLEXER |
| Max I(ol) | 0.012A |
| Number of Functions | 4 |
| Number of Inputs | 2 |
| Number of Outputs | 1 |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Prop. Delay@Nom-Sup | 11.9ns |
| Propagation Delay (tpd) | 106ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Where can I find the CD74AC157MG4 datasheet?
CD74AC157MG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74AC157MG4?
Compatible alternatives and drop-in replacements for CD74AC157MG4:
Multiplexer, AC Series, 4-Func, 2 Line Input, 1 Line Output, Inverted Output, CMOS, PDSO16
Frequently Asked Questions
How many independent data channels does the CD74AC157MG4 multiplex and how are they controlled?
The CD74AC157MG4 provides 4 independent 2-to-1 multiplexer channels, all controlled by a single shared SELECT input pin. When SELECT is low, all 4 channels connect the A inputs to the outputs; when SELECT is high, all 4 B inputs are routed to their respective outputs. This allows simultaneous switching of 4-bit data words with a single control signal.
What load capacitance is the CD74AC157MG4 rated for and how does this affect propagation delay?
The CD74AC157MG4 is characterized at a load capacitance of 50 pF per output, which is typical for backplane and board-level bus traces. At this load, the AC logic family delivers propagation delays in the range of 4 ns to 7 ns at 5 V supply, making it suitable for clock frequencies well above 50 MHz in digital switching and bus multiplexing applications.
In which digital interface design scenarios does using CD74AC157MG4 reduce component count?
The CD74AC157MG4 consolidates 4 discrete 2-to-1 multiplexers into one SOIC-16 package, replacing up to 4 separate logic ICs needed for individual channel switching. This is advantageous in address bus multiplexing, DRAM row and column address sharing, and FPGA configuration pin routing, where a single control signal needs to switch 4 parallel signal lines simultaneously.
How does the AC logic family of CD74AC157MG4 compare to HC or HCT multiplexers for high-speed applications?
The AC logic family used in CD74AC157MG4 offers approximately 2x faster propagation speeds compared to HC family devices, with typical delays of 5 ns to 7 ns versus 8 ns to 12 ns for HC equivalents at 5 V. This speed advantage makes CD74AC157MG4 preferable in video signal switching, high-frequency bus arbitration, and systems operating above 40 MHz where HC family timing margins are insufficient.
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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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