SN74HCT257N Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
SN74HCT257N is a quadruple 2-to-1 data selector/multiplexer with 3-state outputs in a 16-pin DIP package, featuring HCT logic levels, 150pF load capacitance, and 4-channel operation. From $0.37, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN74HCT257N Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3706(MOQ 1)
- 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 SN74HCT257N?
- Quadruple 2-to-1 multiplexer with 3-state outputs for bus-oriented applications
- HCT logic family: TTL-compatible inputs with CMOS performance and low power consumption
- 4 independent selection channels supporting 2-bit data paths per channel
- 150pF load capacitance rated for robust signal integrity in high-capacitance environments
- 16-pin DIP package (R-PDIP-T16) for easy through-hole PCB integration
- RoHS compliant (Pb-free, JESD-609 e4) for modern environmental requirements
What is SN74HCT257N used for?
The SN74HCT257N is widely used in digital systems requiring data bus multiplexing, such as microprocessor address/data bus switching and memory bank selection. Its 3-state outputs make it ideal for shared bus architectures in embedded systems, industrial controllers, and communication equipment. The HCT logic family compatibility also enables seamless interfacing between TTL and CMOS logic in mixed-voltage designs.
What are the specifications of SN74HCT257N?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | HCT |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 150pF |
| Logic IC Type | MULTIPLEXER |
| Max I(ol) | 0.0052A |
| 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) | 0.08mA |
| Prop. Delay@Nom-Sup | 38ns |
| Propagation Delay (tpd) | 48ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| 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 SN74HCT257N datasheet?
SN74HCT257N Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74HCT257N?
Compatible alternatives and drop-in replacements for SN74HCT257N:
Multiplexer, HCT Series, 4-Func, 2 Line Input, 1 Line Output, True Output, CMOS, PDIP16
Frequently Asked Questions
What is the SN74HCT257N and what does it do?
The SN74HCT257N is a quadruple 2-line to 1-line data selector/multiplexer with 3-state outputs from Texas Instruments. It provides 4 independent 2-to-1 multiplexing channels, allowing selection between two data inputs per channel. With HCT logic family, it features TTL-compatible inputs, operates at standard CMOS voltage levels, and supports a load capacitance of up to 150pF, making it suitable for bus-oriented digital designs.
What are the key electrical parameters of the SN74HCT257N?
The SN74HCT257N operates in the HCT logic family with a maximum output low current (I(ol)) of 5.2mA, a rated load capacitance (CL) of 150pF, and 2 bits per function across 4 multiplexer channels. It is packaged in a 16-pin dual-in-line (R-PDIP-T16) through-hole package and is RoHS compliant with a Pb-free rating (JESD-609 e4). These specs make it reliable for standard 5V digital logic systems.
What are typical applications for the SN74HCT257N?
The SN74HCT257N is commonly used in microprocessor-based systems for address and data bus multiplexing, memory bank switching, and data routing in embedded controllers. Its 3-state outputs allow multiple devices to share a common data bus without signal conflicts. It is also used in industrial automation, communication interfaces, and legacy TTL-to-CMOS bridge circuits where HCT compatibility is required.
What package does the SN74HCT257N come in and are there SMD alternatives?
The SN74HCT257N is available in a 16-pin dual-in-line package (DIP/PDIP), which is a through-hole format ideal for prototyping and applications where hand soldering is preferred. For surface-mount designs, Texas Instruments offers equivalent parts in SOIC and TSSOP packages, such as the SN74HCT257D (SOIC-16) and SN74HCT257PW (TSSOP-16), which provide the same functionality in smaller SMD footprints.
How can I purchase the SN74HCT257N and what is the price?
The SN74HCT257N is available from FindMyChip starting at approximately $0.37 per unit, with pricing varying by order quantity. It is in stock and available for worldwide shipping. You can submit a quote request on this page to get bulk pricing, lead times, and shipping options tailored to your order requirements.
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Why Buy from FindMyChip
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 |
|---|---|---|
| 1+ | $0.6165 | $0.62 |
| 25+ | $0.5760 | $14.40 |
| 100+ | $0.5060 | $50.60 |
| 1000+ | $0.4157 | $415.70 |
| 5000+ | $0.4086 | $2043.15 |
| 10000+ | $0.3706 | $3706.00 |
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