Datasheet Texas Instruments SN74AS257 — Ficha de datos
| Fabricante | Texas Instruments |
| Serie | SN74AS257 |
Selectores / multiplexores de datos cuádruples de 2 líneas a 1 línea con salidas de 3 estados
Hojas de datos
Quad 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs datasheet
PDF, 1.0 Mb, Revisión: C, Archivo publicado: agosto 1, 1996
Extracto del documento
Precios
Estado
| SN74AS257D | SN74AS257N | SN74AS257NSR | |
|---|---|---|---|
| Estado del ciclo de vida | Activo (Recomendado para nuevos diseños) | Activo (Recomendado para nuevos diseños) | Activo (Recomendado para nuevos diseños) |
| Disponibilidad de muestra del fabricante | No | No | No |
Embalaje
| 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 | Descargar | Descargar | Descargar |
Paramétricos
| 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 |
Plan ecológico
| SN74AS257D | SN74AS257N | SN74AS257NSR | |
|---|---|---|---|
| RoHS | Obediente | Obediente | Obediente |
| Pb gratis | Sí |
Notas de aplicación
- Advanced Schottky Load ManagementPDF, 277 Kb, Archivo publicado: 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, Archivo publicado: agosto 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
Linea modelo
Serie: SN74AS257 (3)
Clasificación del fabricante
- Semiconductors> Switches and Multiplexers> Buffered Encoders and Decoders