Datasheet Texas Instruments SN74AS257
| Manufacturer | Texas Instruments |
| Series | SN74AS257 |
Quadruple 2-Line to 1-Line Data Selectors/Multiplexers With 3-State Outputs
Datasheets
Quad 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs datasheet
PDF, 1.0 Mb, Revision: C, File published: Aug 1, 1996
Extract from the document
Prices
Status
| SN74AS257D | SN74AS257N | SN74AS257NSR | |
|---|---|---|---|
| Lifecycle Status | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) |
| Manufacture's Sample Availability | No | No | No |
Packaging
| SN74AS257D | SN74AS257N | SN74AS257NSR | |
|---|---|---|---|
| N | 1 | 2 | 3 |
| Pin | 16 | 16 | 16 |
| Package Type | D | N | NS |
| Industry STD Term | SOIC | PDIP | SOP |
| JEDEC Code | R-PDSO-G | R-PDIP-T | R-PDSO-G |
| Package QTY | 40 | 25 | 2000 |
| Carrier | TUBE | TUBE | LARGE T&R |
| Device Marking | AS257 | SN74AS257N | 74AS257 |
| Width (mm) | 3.91 | 6.35 | 5.3 |
| Length (mm) | 9.9 | 19.3 | 10.3 |
| Thickness (mm) | 1.58 | 3.9 | 1.95 |
| Pitch (mm) | 1.27 | 2.54 | 1.27 |
| Max Height (mm) | 1.75 | 5.08 | 2 |
| Mechanical Data | Download | Download | Download |
Parametrics
| Parameters / Models | SN74AS257D | SN74AS257N | SN74AS257NSR |
|---|---|---|---|
| Bandwidth, MHz | 125 | 125 | 125 |
| Bits | 2 | 2 | 2 |
| Number of Channels | 4 | 4 | 4 |
| Configuration | 2:1 | 2:1 | 2:1 |
| Digital input leakage(Max), uA | 5 | 5 | 5 |
| ESD Charged Device Model, kV | 0.75 | 0.75 | 0.75 |
| ESD HBM, kV | 2 | 2 | 2 |
| F @ Nom Voltage(Max), Mhz | 125 | 125 | 125 |
| Function | Encoder/Multiplexer | Encoder/Multiplexer | Encoder/Multiplexer |
| ICC @ Nom Voltage(Max), mA | 31.9 | 31.9 | 31.9 |
| Operating Temperature Range, C | 0 to 70 | 0 to 70 | 0 to 70 |
| Output Drive (IOL/IOH)(Max), mA | 48/-15 | 48/-15 | 48/-15 |
| Package Group | SOIC | PDIP | SO |
| Package Size: mm2:W x L, PKG | 16SOIC: 59 mm2: 6 x 9.9(SOIC) | See datasheet (PDIP) | 16SO: 80 mm2: 7.8 x 10.2(SO) |
| Rating | Catalog | Catalog | Catalog |
| Schmitt Trigger | No | No | No |
| Technology Family | AS | AS | AS |
| Type | 3-State Output | 3-State Output | 3-State Output |
| VCC(Max), V | 5.5 | 5.5 | 5.5 |
| VCC(Min), V | 4.5 | 4.5 | 4.5 |
| Voltage(Nom), V | 5 | 5 | 5 |
| tpd @ Nom Voltage(Max), ns | 12 | 12 | 12 |
Eco Plan
| SN74AS257D | SN74AS257N | SN74AS257NSR | |
|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant |
| Pb Free | Yes |
Application Notes
- Advanced Schottky Load ManagementPDF, 277 Kb, File published: Feb 1, 1997
Designers of high-speed systems that include advanced Schottky (AS) devices must consider the operating environment in their work. They must be aware of the individual device characteristics and their interaction with other devices. This document provides a detailed discussion of the waveform characteristics equivalent circuit models transmission line fanout and termination for AS load manageme - Advanced Schottky (ALS and AS) Logic FamiliesPDF, 1.9 Mb, File published: Aug 1, 1995
This document introduces the advanced Schottky family of clamped TTL integrated circuits (ICs). Detailed electrical characteristics of the 'AS and 'ALS devices with table formats are provided. Guidelines for designing high-performance digital systems using the Advanced Schottky family are given along with a brief summary of the solutions to most design decisions needed to implement systems using t
Model Line
Series: SN74AS257 (3)
Manufacturer's Classification
- Semiconductors> Switches and Multiplexers> Buffered Encoders and Decoders
