ISL8392IB - 4-Channel 35Ω SPST Analog Switch | Renesas
料号： ISL8392IB ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ISL8392IB 概述
An analog switch is a semiconductor-controlled pass element that connects or isolates circuit nodes under digital control. The ISL8392 family belongs to the interface IC hierarchy: analog switch → switch/multiplexer IC → interface integrated circuit. Its SPST configuration provides one conducting path per switch rather than a multi-channel multiplexer, making it useful when each signal requires independent routing.
Verified device features include a maximum charge injection of 5 pC, on-resistance matching of 300 mΩ, and crosstalk of -89 dB at 1 MHz. The family data also identifies low power consumption of 1 µW, leakage current up to 2.5 nA, turn-on time of 60 ns, turn-off time of 30 ns, and maximum on-resistance flatness of 4 Ω. These characteristics suit signal paths where fast transitions, low leakage, and controlled charge injection are important.
The switch architecture is designed for low-voltage precision routing rather than high-voltage power switching. Signal amplitude, supply range, input capacitance, control-logic levels, and switched leakage must all remain within device limits. Because ISL8392IB is listed as obsolete by GlobalSpec, new production designs should account for lifecycle risk and contact Renesas regarding supported sourcing before committing an active BOM.
Typical uses include battery-powered sensor acquisition, multimeter and test-equipment input routing, sample-and-hold systems, data-acquisition modules, and low-power analog signal multiplexing. The 60 ns turn-on and 30 ns turn-off values can limit settling intervals, while 2.5 nA maximum leakage helps preserve weak-source measurements between switching events.
Use the 16-SOIC footprint exactly as shown in the manufacturer pinout, and observe all control pins during unused channels. Do not infer the complete pin map or absolute maximum ratings from distributor snippets alone. Validate signal integrity, supply sequencing, and injected charge in the final analog channel because package parasitics and PCB capacitance can materially affect precision measurements.
This page consolidates verified lifecycle, electrical, package, cross-reference, and sourcing information with engineering guidance that extends beyond a distributor listing. It also clearly separates confirmed data from parameters that still require datasheet or internal-inventory confirmation.
直接替换替代料： ISL8392IB ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
ISL8392IBZ
✅ 直接替换📋 参考替代料（不在目录中）
ISL8392IBZ-TR
✅ 直接替换📋 参考替代料（不在目录中）
ISL8392IB 最大额定值与电气特性
| Number of Switches | 4 circuits |
| Switch Configuration | 1:1 SPST |
| Typical On-Resistance | 35 Ω |
| Single-Supply Operating Range | +2 V to +12 V |
| Dual-Supply Operating Range | ±2 V to ±6 V |
| Low Power Consumption | 1 µW |
| Maximum Leakage Current | 2.5 nA |
| Turn-On Time | 60 ns |
| Turn-Off Time | 30 ns |
| Maximum Charge Injection | 5 pC |
| Crosstalk | -89 dB at 1 MHz |
| On-Resistance Matching | 300 mΩ |
| Maximum On-Resistance Flatness | 4 Ω |
| 封装 | 16-SOIC |
| 安装类型 | Surface mount |
ISL8392IB 16-soic 引脚配置指南
ISL8392IB（16-soic 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： ISL8392IB.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ISL8392IB 适用于 6 应用s: Battery-Powered Sensor Acquisition, Multimeter and Instrumentation Routing, Data-Acquisition Multiplexing, Sample-and-Hold Signal Control, Industrial Control Signal Isolation, Portable Medical Monitoring.
Battery-Powered Sensor Acquisition
ISL8392IB fits low-voltage sensor-acquisition boards because its family operates from +2 V to +12 V, consumes approximately 1 µW, and limits leakage to 2.5 nA. Place the four switches between sensor outputs and the measurement amplifier or ADC input, and use the 60 ns turn-on and 30 ns turn-off figures for an initial timing estimate. The 35 Ω typical on-resistance adds to source impedance, so verify amplifier bias current and acquisition settling rather than assuming the switching delay alone determines accuracy.
推荐
Multimeter and Instrumentation Routing
The four independent SPST channels make ISL8392IB useful for compact test and measurement routing, where source signals must be connected or isolated under digital control. Its 5 pC maximum charge injection and 2.5 nA maximum leakage are relevant when switching high-impedance probes, while -89 dB crosstalk at 1 MHz helps limit inter-channel coupling. In an instrument front end, place switches close to protected input nodes and verify leakage, capacitance, and injected transient against the required measurement uncertainty.
推荐
Data-Acquisition Multiplexing
ISL8392IB can route four precision analog inputs when a system uses independent control rather than a monolithic multiplexer architecture. Its 35 Ω typical on-resistance contributes to the source-to-ADC transfer function, while the 60 ns and 30 ns switching times define the first transition stage. The exact acquisition interval must also account for the ADC sampling capacitor, source impedance, switch capacitance, and the number of clock cycles allowed for settling.
推荐
Sample-and-Hold Signal Control
For sample-and-hold or switched-capacitor front ends, ISL8392IB provides fast SPST routing with a listed 30 ns turn-off time and 60 ns turn-on time. Its maximum charge injection of 5 pC can create an error voltage when applied to the sampling node, making the held capacitance a critical design variable. Estimate the transient as charge divided by total node capacitance, then verify leakage and settling over the intended temperature and supply conditions.
推荐
Industrial Control Signal Isolation
ISL8392IB can isolate or reconnect low-level analog control paths in industrial electronics when the signal remains within its low-voltage range. The dual-supply capability of ±2 V to ±6 V supports bipolar systems without requiring a separate positive-only arrangement. Validate control thresholds, input overvoltage tolerance, and isolation intent, since the SPST switches themselves provide routing control but are not presented as certified galvanic isolation barriers.
推荐
Portable Medical Monitoring
The low-power operation and low-leakage characteristics make ISL8392IB a candidate for portable monitoring signal paths that operate from low-voltage supplies. Four SPST switches can connect sensor inputs, test points, or calibration nodes while limiting inactive leakage to the verified 2.5 nA maximum. Because no medical qualification is supplied, this use is suitable only for supporting analog routing within an appropriately qualified system; signal limits, isolation, patient protection, and standards compliance remain separate design requirements.
推荐
推荐产品汇总
工程参考数据： ISL8392IB ——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 | ISL8392IBZ | ISL8392IBZ-TR |
|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 16-SOIC | 16-SOIC | 16-SOIC |
| Switch Configuration | 4-circuit 1:1 SPST | Similar switching characteristics; exact configuration not verified | Similar switching characteristics; exact configuration not verified |
关键差异点
- Documented precision quad-switch function （对比 ISL8392IBZ-TR)
- Explicit low-voltage operating ranges （对比 ISL8392IBZ)
- Defined leakage and channel-matching targets （对比 ISL8392IBZ)
设计说明
Validate switch settling with the actual source impedance and receiver capacitance rather than relying only on the listed 60 ns turn-on or 30 ns turn-off time. Estimated: with a 35 Ω on-resistance and 1 nF effective node capacitance, the RC time constant is approximately 35 ns, so one time constant is not sufficient for a high-accuracy settled reading. This estimate excludes package, PCB, ADC sample-switch, and signal-source impedances and must be confirmed in hardware.
Do not treat SPST routing as galvanic isolation. The switch controls connection between analog nodes and may still allow charge injection, leakage, power-domain coupling, or ESD events according to its absolute maximum ratings. Confirm signal amplitude, supply sequencing, control logic levels, and unused-channel states from the complete manufacturer datasheet before treating the switched path as a safety boundary.
Route switched analog signals as short, guarded traces and place control circuitry away from sensitive nodes to reduce capacitive pickup. Keep supply and ground connections capable of handling the transient current produced by 30 ns to 60 ns switching, and use a local bypass strategy appropriate to the complete datasheet. PCB leakage and contamination can become significant when the 2.5 nA leakage figure is used near high-impedance sources.
Use either the single-supply range of +2 V to +12 V or the dual-supply range of ±2 V to ±6 V as documented, without assuming arbitrary combinations are valid. Estimated charge-injection voltage equals 5 pC divided by the total held-node capacitance, but the input values for capacitance and distributed parasitic effects are design-specific. Confirm startup, shutdown, and control-pin states to prevent unintended analog paths during power transitions.
合规信息
The supplied verified excerpts do not provide exact-MPN RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. GlobalSpec identifies ISL8392IB as obsolete. Compliance must be confirmed from current Renesas environmental or product documentation.