ISO1211D - 24V-60V Isolated Digital Input | Texas Instruments
料号： ISO1211D ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.8326 | $0.83 |
| 10 | $0.8326 | $8.33 |
| 100 | $0.8326 | $83.26 |
| 500 | $0.8326 | $416.30 |
| 1,000 | $0.8326 | $832.60 |
ISO1211D 概述
An isolated digital input receiver converts field-side voltage states into a logic signal presented to a controller or other electronics. The ISO1211 belongs to the isolated-interface IC hierarchy and replaces conventional optocoupler input stages with an integrated receiver designed for high-side industrial input conditions. Its isolation function protects control-side circuitry from field-side electrical conditions while transferring the input state.
Key verified features include compliance with IEC 61131-2 Type 1, 2, and 3 characteristics for 24V isolated digital inputs, bipolar input support, broken-wire detection, and an operating temperature range from -40C to +125C. The current limit is specified as 2.2mA to 2.47mA for Type 3 designs. The SOIC package provides eight terminals and is identified by TI as package code D.
The ISO1211D is intended for programmable logic controllers, motor-control systems, grid infrastructure, and other industrial equipment with isolated digital inputs. External resistors set the supported field-input voltage range, so the final input network must be selected according to the intended DC or AC voltage and the applicable IEC 61131-2 input type. The receiver architecture allows the field interface to be designed without reproducing a discrete optocoupler circuit.
Designers should verify the complete pinout, isolation requirements, resistor values, voltage ratings, and input thresholds against the manufacturer datasheet before production. The verified product page identifies ISO1211D as an 8-pin SOIC (D) device rated from -40C to +125C. Its principal engineering value is integration of a field-input receiver into a compact, application-specific interface for industrial control equipment.
This page consolidates verified manufacturer and distributor information, IEC 61131-2 compatibility information, package data, application context, and design guidance. It does not infer unreported electrical values, invent pricing, or substitute a different package simply to create an alternative.
直接替换替代料： ISO1211D ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ISO1211D （相同外形与封装尺寸） ——差异在于 Device Type, Package.
快速对比工具——选择替代料号进行并排对比：
ISO1211DR
✅ 直接替换📋 参考替代料（不在目录中）
ISO122U
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →ISO1212D
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ISO1211EVM
✅ 直接替换📋 参考替代料（不在目录中）
ISO1211D 规格参数
| Device Type | Single-channel isolated 24V to 60V digital input receiver |
| Supported Digital Input Range | 24V to 60V |
| External-Resistor DC Input Support | 9V to 300V DC |
| External-Resistor AC Input Support | 9V to 300V AC |
| IEC 61131-2 Input Characteristics | Type 1, Type 2, and Type 3 |
| Type 3 Current Limit | 2.2mA to 2.47mA |
| Input Type | Bipolar input |
| Broken-Wire Detection | Supported |
| 工作温度范围 | -40C to +125C |
| 封装 | 8-pin SOIC (D) |
| Package Code | D |
| Terminal Count | 8 terminals |
| 安装方式 | Surface mount |
| Primary Application | PLC digital input modules |
| Isolation Category | Isolated digital input receiver |
| Manufacturer | Texas Instruments |
| RoHS 状态 | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
ISO1211D d 引脚配置指南
ISO1211D（d 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： ISO1211D.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ISO1211D 适用于 6 应用s: PLC Digital Input Modules, Motor-Control Equipment, Grid Infrastructure Interfaces, Industrial Sensor and Limit Switch Inputs, Programmable Automation Test Equipment, Isolated Control-System Front Ends.
PLC Digital Input Modules
ISO1211D fits a PLC digital-input card because it is specifically identified by Texas Instruments as a single-channel receiver for 24V to 60V isolated digital inputs. Place it behind the field-side input network so the controller receives a conditioned digital state while the isolation boundary separates industrial wiring from control electronics. Its verified IEC 61131-2 Type 1, 2, and 3 characteristics support several PLC input classes, while the 8-pin SOIC package keeps the channel compact. External resistors are required to establish the intended voltage range, and the 2.2mA to 2.47mA Type 3 current limit helps control dissipation.
推荐
Motor-Control Equipment
ISO1211D is suitable for motor-control equipment that requires a robust isolated digital input for start, stop, limit, or interlock signals. The receiver supports 24V to 60V input modules and can be configured with external resistors for 9V to 300V DC or AC designs. This makes it useful where field wiring is exposed to industrial transients and must communicate status to a controller through an isolation barrier. Designers should calculate resistor power, verify input thresholds, and preserve the required isolation layout rather than treating the IC as a direct field-wire connection.
推荐
Grid Infrastructure Interfaces
ISO1211D can serve as the input receiver in grid-infrastructure control equipment that monitors field-state signals from remote or high-energy wiring. The isolated receiver is intended for 24V to 60V digital input modules, with external-resistor support extending the design range to 9V to 300V DC or AC. IEC 61131-2 Type 1, 2, and 3 characteristics provide a useful basis for industrial input selection. The circuit must still be validated for the installation’s surge, grounding, wiring, and isolation requirements; the device does not by itself guarantee complete system safety certification.
推荐
Industrial Sensor and Limit Switch Inputs
ISO1211D is appropriate for digital sensor, selector-switch, and limit-switch inputs that operate in a nominal 24V industrial environment. Its bipolar-input capability and broken-wire detection support field-state monitoring, while the controlled Type 3 input current helps make the interface more repeatable than an unconstrained discrete input. The 8-pin SOIC footprint supports a repeatable PCB layout, and the -40C to +125C operating range covers demanding equipment environments. Select the external resistors and protection network for the actual switch wiring and verify the complete input circuit against the manufacturer datasheet.
推荐
Programmable Automation Test Equipment
ISO1211D can be used in automation equipment that accepts field-style digital signals while keeping the control section isolated. The device is suitable for 24V to 60V input modules and supports the manufacturer-stated IEC 61131-2 Type 1, 2, and 3 characteristics. That combination is useful when test fixtures, actuator controllers, and machine controls need a defined input-current behavior. The receiver’s small SOIC package simplifies board partitioning around an isolation barrier, but fixture protection, resistor selection, and signal-return design remain application-specific and must be checked during bring-up.
推荐
Isolated Control-System Front Ends
ISO1211D fits an isolated front end when a controller must monitor a 24V industrial logic signal without allowing the field-side network to connect directly to sensitive electronics. Its isolated receiver architecture provides a defined conversion point between the input module and downstream logic, and the verified -40C to +125C range supports broad industrial conditions. Use the device in conjunction with correctly rated external resistors, layout practices that preserve isolation, and the application’s overvoltage requirements. It is intended for digital input reception rather than power conversion or high-voltage sensing.
推荐
推荐产品汇总
工程参考数据： ISO1211D ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ISO1211DR | ISO122U | ISO1212D | ISO1211EVM |
|---|---|---|---|---|---|
| Package | 8-pin SOIC (D) | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
关键差异点
- Dedicated 24V isolated-input receiver positioning （对比 ISO1211DR)
- Verified Type 3 current-limit range （对比 ISO122U)
- Bipolar input and broken-wire detection （对比 ISO1212D)
- Industrial application coverage （对比 ISO1211EVM)
设计说明
Design the external input-resistor network around the verified 2.2mA to 2.47mA Type 3 current-limit range. The resistor dissipation must be checked using the actual field voltage and the resulting input current rather than only the nominal supply value. Keep the input current within the manufacturer’s intended Type 3 design limits, and verify that every external component maintains adequate voltage and power margin.
Place the input resistors, protection components, and ISO1211D close enough to the field-side connector that transient current follows a controlled path. Preserve the isolation boundary between field wiring and control-side circuitry, including the required copper and component spacing defined by the manufacturer datasheet. Confirm the SOIC-8 land pattern and pin numbering before release because the retrieved data does not include a complete pin diagram.
Do not treat ISO1211D as a universal high-voltage input device without calculating the external resistor network and protection strategy. The verified 9V to 300V DC or AC capability depends on the external components and application conditions. Also do not substitute ISO1211DR or another related designation solely because the function sounds similar; compare the official pinout, thresholds, current limits, isolation ratings, and package details first.
合规信息
The verified manufacturer information specifically confirms IEC 61131-2 Type 1, 2, and 3 characteristics. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status were not supplied and remain unknown.