SN75970B SCSI 差动转换器控制
The SN75970B SCSI differential converter-control, when used in conjunction with one or more of its companion data transceiver(s), provides the superior electrical performance of differential SCSI from a single-ended SCSI bus controller. A 16-bit, Fast-SCSI bus can be implemented with just three devices (two for data and one for control) in the space-efficient, 56-pin, shrink small-outline package (SSOP) as well as the even smaller TSSOP and a few external components.
The SN75970B is available in a B2 (20 Mxfer) version and a B1 (10 Mxfer) version.
In a typical differential SCSI node, the SCSI controller provides the enables for each external RS-485 transceiver. This could require as many as 27 additional terminals for a 16-bit differential bus controller or relegate a 16-bit single-ended controller to only an 8-bit differential bus
|
SN75970B |
| Drivers Per Package |
9 |
| Receivers Per Package |
9 |
| Signaling Rate(Mbps) |
20 |
| ICC(Max)(mA) |
95 |
| Supply Voltage(s)(Min)(V) |
5 |
| Supply Voltage(s)(Max)(V) |
5 |
| Operating Temperature Range(C) |
0 to 70 |
| Pin/Package |
56SSOP, 56TSSOP |
| Isolated |
No |
| Approx. Price (US$) |
17.95 | 1ku |
| Number of Nodes |
32 |
| # of TX/RX |
9 TX / 9 RX |
| Temp Range(C) |
0 to 70 |
SN75970B 特性
- Provides High-Voltage Differential SCSI from Single-Ended Controller When Used With the SN75971B Data Transceiver
- Nine Transceivers Meet or Exceed the Requirements of ANSI Standard EIA-485 and ISO-8482 Standards
- ESD Protection on Bus Pins to 12 kV
- Packaged in Shrink Small-Outline Package with 25 mil Terminal Pitch and Thin Small-Package with 20 mil Terminal Pitch
- Low Disabled Supply Current 32 mA Typ
- Thermal Shutdown Protection
- Positive- and Negative-Current Limiting
- Power-Up/-Down Glitch Protection
- Open-Circuit Failsafe Receivers
SN75970B 芯片订购指南
SN75970B 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| SN75970B1DL |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
SN75970B1DL |
SN75970B1DL |
| SN75970B1DLG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
SN75970B1DLG4 |
SN75970B1DLG4 |
| SN75970B2DGG |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
SN75970B2DGG |
SN75970B2DGG |
| SN75970B2DGGG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
SN75970B2DGGG4 |
SN75970B2DGGG4 |
| SN75970B2DL |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
SN75970B2DL |
SN75970B2DL |
| SN75970B2DLG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
SN75970B2DLG4 |
SN75970B2DLG4 |
SN75970B 应用技术支持与电子电路设计开发资源下载
- SN75970B 数据资料 dataSheet 下载.PDF
- TI 德州仪器RS-485选型与价格 . xls
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 使用数字隔离器设计隔离式 I2C 总线接口 (zhct119.PDF, 339 KB)
- 1Q 2011 Issue Analog Applications Journal (slyt399.PDF, 964 KB)
- 接口选择指南 (Rev. D) (PDF 2994 KB)
- Signaling Rate vs. Distance for Differential Buffers (PDF 420 KB)
- Q1 2009 Issue Analog Applications Journal (slyt319.PDF, 1.39 MB)
- Isolated RS-485 Reference Design (PDF 80 KB)
- 无铅组件涂层的保存期评估 (PDF 1305 KB)
- Analog Signal Chain Guide (8.62 MB)
- Industrial Interface IC Solutions (101 KB)
SN75970B 工具和软件