74AC11257PWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
74AC11257PWG4 is a quad 2-input, 1-output multiplexer from Texas Instruments in the high-speed AC logic family. It features four independent 2-to-1 multiplexer functions with 24 mA output sink current capability. Available in TSSOP-20 package, in stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- 74AC11257PWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 74AC11257PWG4?
- Quad 2-to-1 multiplexer with 4 independent selection functions in a single TSSOP-20 package
- High-speed AC-logic family supports fast signal routing at 3 V to 5.5 V supply voltages
- 24 mA output sink current drives bus lines and logic inputs without additional buffering
What is 74AC11257PWG4 used for?
The 74AC11257PWG4 is used in data routing and bus selection circuits where four independent 2-input multiplexers are needed in a compact TSSOP-20 footprint. Its high-speed AC logic family operation at 3 V to 5.5 V makes it suitable for address decoding, test point switching, and signal path selection in embedded processors and FPGA interface boards. The common select input simplifies control logic by switching all four channels simultaneously with a single line.
What are the specifications of 74AC11257PWG4?
| YTEOL | 0 |
| Family | AC |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Logic IC Type | MULTIPLEXER |
| Max I(ol) | 0.024A |
| Number of Bits | 2 |
| Number of Functions | 4 |
| Number of Inputs | 2 |
| Number of Outputs | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 10.1ns |
| Propagation Delay (tpd) | 10.1ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 3V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| 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 |
| Country of Origin | Malaysia |
Where can I find the 74AC11257PWG4 datasheet?
74AC11257PWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for 74AC11257PWG4?
Compatible alternatives and drop-in replacements for 74AC11257PWG4:
Multiplexer, AC Series, 4-Func, 2 Line Input, 1 Line Output, CMOS, PDSO20
Multiplexer, AC Series, 4-Func, 2 Line Input, 1 Line Output, CMOS, PDSO20
Frequently Asked Questions
How many simultaneous signal paths does the 74AC11257PWG4 switch, and what is its output drive capability?
The 74AC11257PWG4 contains 4 independent 2-to-1 multiplexer sections, each with 2 inputs and 1 output, all switched together by a single shared select input. Each output can sink 24 mA, which is sufficient to directly drive standard TTL and CMOS logic inputs. Operating from 3 V to 5.5 V, it fits both 3.3 V and 5 V bus systems without level translation.
In which embedded system designs is the 74AC11257PWG4 a practical alternative to a discrete FPGA routing solution?
For designs requiring simultaneous 4-channel bus switching — such as selecting between two memory banks, two address buses, or two sensor data lines — the 74AC11257PWG4 provides a compact solution without consuming FPGA I/O resources. The TSSOP-20 package occupies roughly 35 mm² on a PCB, and at 3.3 V supply the AC family's propagation delay is under 10 ns, making it competitive with FPGA fabric for simple static routing tasks.
What distinguishes the 74AC11257 from the 74HC11257 for high-frequency signal routing applications?
The AC logic family in the 74AC11257PWG4 offers approximately 2x faster propagation delays compared to the HC family, typically under 8 ns at 5 V versus 15 ns for 74HC equivalents. The AC family also provides higher output drive current of 24 mA versus 8 mA for standard HC parts, enabling it to drive heavier loads and longer PCB traces without degrading signal integrity in 50 MHz to 100 MHz bus environments.
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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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