ISL8392IB - 4-Channel 35Ω SPST Analog Switch | Renesas
MPN: ISL8392IB ✗ Tapus ng BuhayISL8392IB Ulas
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.
Mga alternatibo na pwedeng ilagay na ISL8392IB — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
ISL8392IBZ
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
ISL8392IBZ-TR
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
ISL8392IB Mga Pinakamataas na Rating at Electrical Characteristics
| 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 |
| Packhaging | 16-SOIC |
| Uri ng Pagpapasok | Surface mount |
Gabay sa Pin Configuration ng ISL8392IB 16-soic
Pin configuration para sa ISL8392IB (16-soic package). Ang pagnunumero ng pin, mga function, at connection diagram ay tinukoy sa datasheet ng manufacturer. Sumangguni dito para sa eksaktong footprint at mga alituntunin sa soldering.
Wala ng detalyadong pinout data na magagamit para sa ISL8392IB.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
ISL8392IB ay nararapat para sa 6 aplikasyons: 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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for ISL8392IB — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | 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 |
Pangunahing mga Pagkakaiba
- Documented precision quad-switch function (kumpara saISL8392IBZ-TR)
- Explicit low-voltage operating ranges (kumpara saISL8392IBZ)
- Defined leakage and channel-matching targets (kumpara saISL8392IBZ)
Talaan ng Disenyo
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.
Impormasyon ng Pagsunod sa Kautusan
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.