ISL84467IRTZ - Quad SPDT Analog Switch, 0.39Ω rON, 1.65-4.5V | Renesas
N.º de pieza: ISL84467IRTZ ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.56 | $25,60 |
| 100 | $2.27 | $227,00 |
| 500 | $2.04 | $1.020,00 |
| 1.000 | $1.81 | $1.810,00 |
ISL84467IRTZ Descripción general
An analog switch (also called an analog multiplexer or bilateral switch) is a solid-state device that uses MOSFET transistors to route analog or digital signals between input and output pins under digital control. Quad SPDT (Single Pole Double Throw) means the device contains four independent 2:1 switches, each capable of selecting between two signal paths. Compared to electromechanical relays, analog switches offer far faster switching, no contact bounce, lower power, and indefinite mechanical life, but they have limited voltage handling and finite OFF isolation.
Key features of the ISL84467IRTZ include 0.39Ω typical rON (which minimizes signal attenuation and distortion for low-level audio or precision analog signals), 1.8V logic-compatible inputs across the full supply range, break-before-make switching action to prevent momentary shorts between adjacent channels, and ESD protection on the logic and signal pins. The bidirectional signal path means each switch can carry signals in either direction with identical AC performance, simplifying PCB routing when source and destination roles are not predetermined.
The four SPDT switches are organized as two DPDT (Double Pole Double Throw) pairs that switch in tandem, useful for differential signal routing in audio, USB, or data-acquisition front ends. The TQFN-16 package with an exposed pad provides low thermal resistance and a small 3x3 mm footprint, suitable for high-density handheld equipment. Targeted applications per the manufacturer datasheet include battery-powered portable instruments, audio/video signal routing, mobile handsets, and handheld test equipment.
When designing with the ISL84467IRTZ, observe the absolute maximum signal voltage (typically equal to V+ plus ESD diode drops) and place decoupling capacitors close to the V+ pin. For low-distortion audio applications, the low rON and low charge injection of this switch help preserve signal fidelity; designers should still account for switch capacitance in bandwidth-limited paths. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet alone.
Alternativas directas para ISL84467IRTZ — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ISL84467IRTZ (mismo factor de forma y huella) — difiere en Function, Number of Channels, Package, ESD Protection, Logic Input Compatibility.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ISL84467IRTZ-T
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ISL43240IRZ
✅ Sustitución directa✓ En stock
$2.65 / unidad
Ver hoja de datos →FSA3031UMX
✅ Sustitución directa✓ En stock
$0.58 / unidad
Ver hoja de datos →ISL84467IRTZ Valores máximos y características eléctricas
| Función | Quad SPDT (Dual DPDT) analog switch |
| Number of Channels | 4 (SPDT) |
| Configuration | 2:1 switch (SPDT) x 4 |
| On Resistance (rON) | 0.39 Ω typical |
| On Resistance (rON) | 0.75 Ω max (per FindIC summary) |
| Supply Voltage (V+) | 1.65 V to 4.5 V |
| Logic Input Compatibility | 1.8 V logic-compatible (single supply) |
| Turn-On Time (tON) | 33 ns |
| Turn-Off Time (tOFF) | 16 ns |
| Signal Path | Bidirectional |
| Switching Action | Break-before-make |
| Encapsulado | TQFN-16 (3x3 mm) with exposed pad |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
| ESD Protection | Yes (logic and signal pins) |
Configuración de pines de ISL84467IRTZ
| Pin 1 | NO1 — Normally-open terminal of switch 1 |
| Pin 2 | COM1 — Common terminal of switch 1 |
| Pin 3 | NC1 — Normally-closed terminal of switch 1 |
| Pin 4 | GND — Ground |
| Pin 5 | NC2 — Normally-closed terminal of switch 2 |
| Pin 6 | COM2 — Common terminal of switch 2 |
| Pin 7 | NO2 — Normally-open terminal of switch 2 |
| Pin 8 | IN2 — Logic control input for switch 2 |
| Pin 9 | V+ — Positive supply voltage (+1.65V to +4.5V) |
| Pin 10 | IN1 — Logic control input for switch 1 |
| Pin 11 | NO3 — Normally-open terminal of switch 3 |
| Pin 12 | COM3 — Common terminal of switch 3 |
| Pin 13 | NC3 — Normally-closed terminal of switch 3 |
| Pin 14 | NC4 — Normally-closed terminal of switch 4 |
| Pin 15 | COM4 — Common terminal of switch 4 |
| Pin 16 | NO4 — Normally-open terminal of switch 4 |
Aplicaciones típicas
ISL84467IRTZ es adecuado para 7 aplicacións: Portable Audio Signal Routing, Handheld Test and Measurement Front End, Mobile Handset Multiplexing, Data Acquisition Channel Selection, Battery-Powered Medical Wearable Routing, USB / Data Line Multiplexing, Industrial Sensor Multiplexing.
Portable Audio Signal Routing
The ISL84467IRTZ's 0.39 Ω typical ON resistance and bidirectional signal path make it well suited to routing analog audio between sources such as an internal MEMS microphone, an external headset microphone, line-in, and the codec input in a portable device. Each of the four SPDT channels can select one of two sources with break-before-make action, eliminating pops and clicks during source changes. The 1.65V to 4.5V supply range matches single-cell Li-ion battery voltages directly, and the 1.8V logic-compatible control inputs allow direct drive from a low-power application processor GPIO. At 33 ns tON and 16 ns tOFF, channel switching is fast enough to be inaudible in headset multiplexing applications, and the low rON preserves audio signal amplitude with negligible distortion.
Recomendado
Handheld Test and Measurement Front End
Handheld oscilloscope probes, multimeters, and data-loggers frequently need to switch between two input sources (AC/DC, range selection, calibration paths) on each channel, and the ISL84467IRTZ's quad SPDT topology maps directly to four such selections. The 0.39 Ω rON minimizes insertion loss for low-level measurement signals, and the 16 ns tOFF allows rapid channel-to-channel settling before the next ADC conversion. Because the signal path is bidirectional, the same switch can be used in either source or measurement direction. The TQFN-16 (3x3 mm) footprint leaves board space for additional analog front-end components, and the exposed thermal pad provides a stable ground reference for low-noise measurement.
Recomendado
Mobile Handset Multiplexing
In a smartphone or feature-phone main board, the ISL84467IRTZ can route signals between an internal antenna path and an external headset, or between two sensor inputs to a single ADC. Its single 1.65V to 4.5V supply matches the phone's lithium-ion or Li-Po battery directly, removing the need for a separate analog rail, and the 1.8V logic compatibility allows the application processor GPIO to drive the switch control pins without level shifters. The bidirectional signal path means the same switch can be used for either transmit- or receive-side routing. With four SPDT channels, the part handles multiple signal pairs (audio L/R, microphone select, accessory detect) from one compact TQFN-16 package.
Recomendado
Data Acquisition Channel Selection
Multi-channel data-acquisition systems often need to time-multiplex several sensor inputs into a single high-precision ADC. The ISL84467IRTZ provides four SPDT channels that can each select between two sensors, doubling the input count of the downstream ADC. The 0.39 Ω rON and 33 ns tON / 16 ns tOFF settling times help maintain measurement accuracy across rapid channel-to-channel transitions, while the 1.8V logic interface allows direct control from a low-power MCU. The bidirectional path also enables the same switch to be used in front of a DAC for stimulus-response test setups.
Recomendado
Battery-Powered Medical Wearable Routing
Wearable health monitors (ECG patches, pulse oximeters, continuous-glucose monitors) operate from small Li-ion or coin-cell batteries and require ultra-low quiescent drain. The ISL84467IRTZ's wide 1.65V to 4.5V supply range allows direct connection to a single-cell battery, and the low ON resistance of 0.39 Ω typical preserves the amplitude of low-level biopotential signals. The four SPDT channels can switch between active sensors (for example, two electrode pairs and two reference channels) under 1.8V logic control from the wearable's low-power MCU. The bidirectional signal path means the same switch can be used for either the sense or the stimulation direction in a closed-loop biofeedback device.
Recomendado
USB / Data Line Multiplexing
Low-speed USB, UART, and GPIO lines in portable docking stations and cable adapters often need to be rerouted between an upstream port and a side connector. The ISL84467IRTZ handles up to four SPDT pairs, each capable of switching bidirectional data lines at 33 ns tON. While the switch is not rated for high-speed (480 Mbps) USB, it is well suited to USB 1.1 low-speed (1.5 Mbps) and full-speed (12 Mbps) signaling, as well as general-purpose UART routing. The 1.65V to 4.5V supply matches both 3.3V and 1.8V system power rails commonly used in mobile and IoT products.
Recomendado
Industrial Sensor Multiplexing
Industrial sensor nodes and PLC analog-input modules frequently need to multiplex 4-8 sensors onto a single ADC channel, and the ISL84467IRTZ can serve as one quad SPDT stage in such a multiplexer chain. The 0.39 Ω rON preserves signal integrity for 4-20 mA current-loop or 0-10V voltage-mode sensors after the appropriate signal conditioning. Operating from 1.65V to 4.5V, the switch can be powered from the same 3.3V rail that powers the ADC and the MCU, simplifying power tree design. The exposed thermal pad of the TQFN-16 package provides robust thermal performance in higher-temperature industrial enclosures.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ISL84467IRTZ — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ISL84467IRTZ-T | ISL43240IRZ | FSA3031UMX |
|---|---|---|---|---|
| Package | TQFN-16 (3x3 mm) | TQFN-16 (3x3 mm) - same | TQFN-16 - same | TQFN-16 - same |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | onsemi |
| Function | Quad SPDT (Dual DPDT) | Quad SPDT (Dual DPDT) - same | Quad SPDT | Quad SPDT/MUX |
| RoHS Status | Compliant | Compliant | Compliant | Compliant |
Diferenciadores clave
- Ultra-low 0.39 Ω typical rON preserves low-level analog signal amplitude (frente a FSA3031UMX)
- 1.8V logic-compatible inputs across the full supply range (frente a Generic 3.3V-only analog switches)
- Fast 33 ns / 16 ns switching speeds (frente a Lower-speed electromechanical relays and competing analog switches)
Notas de diseño
Place a 0.1 µF ceramic decoupling capacitor as close as possible to the V+ pin (pin 9 in the standard TQFN-16 (3x3) pinout) to suppress digital switching noise from coupling into the analog signal path. The exposed thermal pad on the underside of the package should be soldered to a ground copper pour of at least the same footprint area; this both lowers thermal resistance and provides a low-impedance ground reference for high-frequency signal return paths. Avoid routing digital control traces directly over the analog signal traces to minimize capacitive injection.
Although the ISL84467IRTZ has 0.39 Ω typical rON, the switch adds series resistance and parasitic capacitance to the signal path, which can degrade bandwidth in high-frequency or fast-edge applications. For audio signals up to 20 kHz the impact is negligible, but for switching clock or fast data lines, model the switch's on-state capacitance (typically a few pF) and compute the resulting -3 dB bandwidth with the source and load impedances. Insertion loss at DC equals rON / (rON + Rsource + Rload), so keeping source and load impedances at 10 kΩ or higher preserves accuracy.
Do not apply signal voltages to any NO/NC/COM pin that exceed V+ by more than the ESD diode forward-voltage drop (typically 0.3-0.7V), or currents will flow through the ESD clamp structure and potentially latch up or damage the part. Always power up V+ before applying signals, and ensure the logic control inputs (INx) are driven from a valid logic rail - floating inputs can leave the switch in an undefined state and increase quiescent current. For break-before-make action, respect the tOFF min and tON max timing from the datasheet when sequencing channel changes.
Información de cumplimiento
RoHS compliant per Renesas product page and third-party listings (Mouser, DigiKey). AEC-Q100 not applicable - this is a commercial/industrial-grade part, not automotive-qualified. Halogen-free status not explicitly stated in the verified web data.
