ISO7421 双通道 1/1 1Mbps 数字隔离器
The ISO7421, ISO7421M, ISO7421, and ISO7421M provide galvanic isolation up to 2.5 kVrms for 1 minute per UL. These digital isolators have two isolated channels. Each isolation channel has a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier. Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other circuit from entering the local ground and interfering with or damaging sensitive circuitry. The suffix M indicates wide temperature range (–40°C to 125°C).
The devices have TTL input thresholds and require two supply voltages, 3.3V or 5V, or any combination. All inputs are 5-V tolerant when supplied from a 3
|
ISO7421 |
ISO7421E |
ISO7421FE |
ISO7421M |
| Number of Channels |
2 |
2 |
2 |
2 |
| Channel Configuration |
1/1 |
1/1 |
1/1 |
1/1 |
| Insulation Rating(VRMS) |
2500 |
2500 |
2500 |
2500 |
| Supply Voltage(s)(V) |
3.3,5 |
3.3,5 |
3.3,5 |
3.3,5 |
| Datarate(Mbps) |
1 |
50 |
50 |
1 |
| Input Noise Filter |
No |
No |
No |
No |
| Prop Delay(Max)(ns) |
12 |
11 |
11 |
12 |
| TTL/CMOS Input Threshold |
TTL |
TTL |
TTL |
TTL |
| Footprint |
ADuM1201 |
ADuM1201 |
ADuM1201 |
ADuM1201 |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
| Operating Temperature Range(°C) |
-40 to 105 |
-40 to 125 |
-40 to 125 |
-40 to 125 |
| Approx. Price (US$) |
1.50 | 1ku |
1.70 | 1ku |
1.70 | 1ku |
|
| Pin/Package |
8SOIC |
8SOIC |
8SOIC |
8SOIC |
| Thermal Shutdown |
No |
No |
No |
No |
ISO7421 特性
- Highest Signaling Rate: 1 Mbps
- Low Power Consumption, Typical ICC per Channel (3.3V operation):
- ISO7421: 1.1 mA, ISO7421: 1.5 mA
- Low Propagation Delay – 9 ns Typ. and Low Skew – 300 ps Typ.
- Wide TA Range Specified: –40°C to 125°C
- 4-kVpeak Maximum Isolation, 2.5 kVrms per UL 1577,
IEC/VDE and CSA Approvals, IEC 60950-1, IEC 61010-1
End Equipment Standards Approvals. All Approvals Pending.
- 50 kV/µs Transient Immunity, Typical
- Over 25-Year Isolation Integrity at Rated Voltage
- Operates From 3.3V and 5V Supply and Logic Levels
- APPLICATIONS
- Optocoupler Replacement in:
- Industrial Fieldbus
- Profibus
- Modbus
- DeviceNet™ Data Buses
- Servo Control Interface
- Motor Control
- Power Supplies
- Battery Packs
ISO7421 芯片订购指南
| 器件 |
状态 |
温度 |
价格 |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| ISO7421DW |
ACTIVE |
-40 to 125 |
2.20 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
ISO7421 |
| ISO7421DWR |
ACTIVE |
-40 to 125 |
1.80 | 1ku |
SOIC (D) | 8 |
2000 | LARGE T&R |
ISO7421 |
ISO7421 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 |
| ISO7421DW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
ISO7421DW |
ISO7421DW |
| ISO7421DWR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
ISO7421DWR |
ISO7421DWR |
ISO7421 应用技术支持与电子电路设计开发资源下载
- ISO7421 数据资料 dataSheet 下载.PDF
- TI 德州仪器隔离器选型与价格 . 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)
ISO7421 工具和软件
