Datasheet Texas Instruments SN74AS257 — 数据表
| 制造商 | Texas Instruments |
| 系列 | SN74AS257 |
具有三态输出的四路2线至1线数据选择器/多路复用器
数据表
Quad 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs datasheet
PDF, 1.0 Mb, 修订版: C, 档案已发布: Aug 1, 1996
从文件中提取
价格
状态
| 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 |
打包
| 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 | 下载 | 下载 | 下载 |
参数化
| 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 |
生态计划
| SN74AS257D | SN74AS257N | SN74AS257NSR | |
|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant |
| Pb Free | Yes |
应用须知
- Advanced Schottky Load ManagementPDF, 277 Kb, 档案已发布: 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, 档案已发布: 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
模型线
系列: SN74AS257 (3)
制造商分类
- Semiconductors> Switches and Multiplexers> Buffered Encoders and Decoders