CD74AC257E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The CD74AC257E is a quad 2-input multiplexer with three-state outputs from Texas Instruments in the AC CMOS logic family. It features 4 independent 2-to-1 mux channels, sinks up to 24 mA per output, and supports 50 pF bus loads in a 16-pin DIP package.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74AC257E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8060(MOQ 231)
- 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 CD74AC257E?
- 4 independent 2-to-1 multiplexer channels with three-state outputs for bus sharing and data routing
- AC CMOS family with 24 mA output sink current and 50 pF load capacitance for fast bus-level switching
- 16-pin DIP (R-PDIP-T16) through-hole package for prototyping, repair, and industrial control applications
What is CD74AC257E used for?
The CD74AC257E is used in data routing, bus multiplexing, and signal selection circuits in embedded microcontroller systems and digital logic designs. Its four 2-to-1 multiplexer channels with three-state outputs allow multiple data sources to share a common bus line without contention. The 16-pin DIP format is well-suited for breadboard prototyping and through-hole industrial control boards requiring easy component replacement.
What are the specifications of CD74AC257E?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | AC |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| 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 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 13ns |
| Propagation Delay (tpd) | 117ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia, Mexico |
Where can I find the CD74AC257E datasheet?
CD74AC257E Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74AC257E?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many multiplexer channels does the CD74AC257E provide and what output current can each handle?
The CD74AC257E contains 4 independent 2-to-1 multiplexer channels, each with a three-state output capable of sinking up to 24 mA. This output drive strength enables each channel to directly drive standard CMOS or TTL loads and 50 pF bus capacitances without external buffers, making it practical for 4-bit wide data selection between two sources in a 16-pin DIP package.
What is the purpose of the three-state outputs on the CD74AC257E in a shared bus design?
The three-state outputs on the CD74AC257E allow all 4 output channels to be placed in a high-impedance state simultaneously using the output enable pin. This lets the device disconnect from the bus when not selected, preventing contention with other bus drivers. It is essential in systems with multiple multiplexers or transceivers sharing a single 50 pF bus in microprocessor data paths.
For a through-hole prototype board, why would a designer choose the CD74AC257E over surface-mount alternatives?
The CD74AC257E is housed in a 16-pin DIP (R-PDIP-T16) through-hole package, which allows direct insertion into breadboards or sockets for prototyping without SMT reflow equipment. This is advantageous during early hardware development, lab testing, and field repair scenarios where replacing an AC-family 4-channel 2-to-1 mux with 24 mA output drive needs to be done without soldering tools.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 231+ | $1.3000 | $300.30 |
| 1000+ | $1.0527 | $1052.70 |
| 2500+ | $1.0167 | $2541.78 |
| 5000+ | $0.9950 | $4975.10 |
| 10000+ | $0.9620 | $9620.00 |
| 100000+ | $0.8060 | $80600.00 |
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