ISL8499IV - Ultra Low ON-Resistance Quad SPDT Switch | Renesas
MPN： ISL8499IV ✓ 啟用中ISL8499IV 概覽
直接替換替代品，適用於 ISL8499IV — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
ISL8499IVZ
✅ 直接替換📋 參考替代品（不在目錄中）
DG2799
✅ 直接替換📋 參考替代品（不在目錄中）
STG3699
✅ 直接替換📋 參考替代品（不在目錄中）
ISL8499IV 最大額定值與電氣特性
| Product Type | Quad SPDT (Dual DPDT) analog switch |
| Supply Voltage Range | +1.65 V to +4.5 V |
| ON Resistance at +4.3 V | 0.24 Ohm |
| ON Resistance at +3.0 V | 0.26 Ohm |
| ON Resistance at +1.8 V | 0.45 Ohm |
| Distributor Rated ON Resistance | 250 mOhm |
| ON Resistance Matching Between Channels | 0.04 Ohm |
| ON Resistance Flatness Across Signal Range | 0.05 Ohm |
| Turn-On Time | 15 ns |
| Turn-Off Time | 13 ns |
| Logic Input Compatibility | 1.8 V logic-compatible with a single +3 V supply |
| Signal Direction | Bidirectional |
| Number of Circuits | 4 |
| Switch Configuration | 2:1 |
| 封裝 | 16-TSSOP, 0.173 in x 4.40 mm width package |
| 安裝類型 | Surface mount |
| Power Consumption | Less than 0.2 uW |
ISL8499IV 16-tssop, 0.173 in x 4.40 mm width package 腳位配置指南
ISL8499IV（16-tssop, 0.173 in x 4.40 mm width package 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： ISL8499IV.
請參閱 資料表 以查看完整腳位配置。
典型應用
ISL8499IV 適用於 6 應用s: Battery-Powered Analog Signal Routing, Portable Measurement and Sensor Multiplexing, Low-Voltage Communication Signal Switching, Test and Measurement Signal Multiplexing, Data Acquisition and Mixed-Signal Systems, Embedded Audio and Control Routing.
Battery-Powered Analog Signal Routing
The ISL8499IV fits low-voltage battery-powered systems because it operates from +1.65 V to +4.5 V and has a listed power consumption below 0.2 uW. Its Quad SPDT topology can route signals among multiple sources and loads without requiring four separate switch packages. The bidirectional configuration is useful when either the source or destination side must operate as the active endpoint. At +1.8 V, the ON resistance rises to 0.45 Ohm, so engineers should include that resistance in the complete signal-path budget. The 15 ns turn-on and 13 ns turn-off values support fast control sequences where the analog signal itself remains within the device's verified voltage limits.
推薦
Portable Measurement and Sensor Multiplexing
The ISL8499IV is appropriate for compact sensor and measurement front ends that must select several analog channels with a common supply. Its 16-TSSOP package supports dense PCB layouts, while four 2:1 switch circuits provide flexible channel selection. The specified ON resistance is 0.24 Ohm at +4.3 V, 0.26 Ohm at +3.0 V, and 0.45 Ohm at +1.8 V. These values must be combined with sensor output impedance, ADC input capacitance, and the required settling time. Its 13 ns turn-off and 15 ns turn-on times make it practical for rapid scans, although leakage, bandwidth, charge injection, and signal settling remain important validation items.
推薦
Low-Voltage Communication Signal Switching
The ISL8499IV can route low-voltage communication signals when the designer needs a bidirectional switch with fast transition performance. The Quad SPDT arrangement provides two independently controlled switching sections, and the operating range of +1.65 V to +4.5 V supports single-supply portable systems. The +4.3 V ON-resistance value of 0.24 Ohm can limit insertion loss in moderate-impedance paths, but the signal amplitude, bandwidth, and source impedance determine the practical performance. Logic control is compatible with 1.8 V when the device is operated from +3 V, making the switch suitable for mixed-voltage mobile and embedded interfaces after timing and signal-integrity checks.
推薦
Test and Measurement Signal Multiplexing
The ISL8499IV is suitable for low-voltage test and measurement paths that require compact bidirectional routing between an instrument and several DUT nodes. Its 15 ns turn-on and 13 ns turn-off times support controlled switching sequences, while channel ON-resistance matching of 0.04 Ohm helps reduce path-to-path variation. ON-resistance flatness is listed as 0.05 Ohm across the signal range. For precision measurements, engineers should still include switch leakage, off-impedance, charge injection, channel isolation, and input capacitance in the uncertainty budget. The 16-TSSOP package also makes the device suitable for dense, multi-channel test fixtures.
推薦
Data Acquisition and Mixed-Signal Systems
The ISL8499IV can support analog multiplexing in compact data-acquisition systems where multiple sensor or conditioning outputs must feed a shared converter. Its Quad SPDT structure reduces the number of discrete routing devices, and the 0.26 Ohm ON resistance at +3.0 V is a useful starting point for loss budgeting. Fast switching helps shorten acquisition-cycle dead time, but successful use requires sufficient settling time before conversion. Designers should verify the ADC input range, sampling rate, switch capacitance, logic thresholds, and power-supply noise. In systems using a +3 V rail, the documented 1.8 V logic compatibility enables direct control from suitable low-voltage digital circuitry.
推薦
Embedded Audio and Control Routing
The ISL8499IV can be used in embedded audio, control, and general-purpose analog routing where multiple low-voltage nodes must be selected by a compact switch. Its bidirectional Quad SPDT implementation permits flexible signal-path direction, and the low 0.2 uW maximum power-consumption figure is beneficial in compact embedded equipment. The switch should be used only within its verified analog signal range, and designers must account for ON resistance, off leakage, and crosstalk. For audio or control paths sensitive to noise, supply decoupling and grounding should be evaluated together with the control-signal timing. The 16-TSSOP package simplifies replacement planning when a verified drop-in option is required.
推薦
推薦產品摘要
工程參考資料，適用於 ISL8499IV — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ISL8499IVZ | DG2799 | STG3699 |
|---|---|---|---|---|
| Package | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | STMicroelectronics |
| Product Type | Quad SPDT (Dual DPDT) analog switch | Quad SPDT analog switch | Pin-compatible drop-in replacement; detailed type not supplied | Pin-compatible drop-in replacement; detailed type not supplied |
| Drop-In Status | Original device | Identical terminals, package, and consistent main performance characteristics | Explicitly identified as pin-compatible drop-in replacement | Explicitly identified as pin-compatible drop-in replacement |
主要差異化特點
- Documented low-voltage ON-resistance performance (對比DG2799)
- Fast switching performance for compact routing systems (對比STG3699)
- Low channel variation and signal-range flatness (對比ISL8499IVZ)
- Verified explicit drop-in sourcing options (對比ISL8499IVZ)
設計說明
Include the switched-path resistance in the complete source, switch, and load budget. The supplied data specifies 0.24 Ohm at +4.3 V, 0.26 Ohm at +3.0 V, and 0.45 Ohm at +1.8 V, with 0.04 Ohm channel matching and 0.05 Ohm flatness across the signal range. For high-impedance sensors, capacitance, leakage, and settling can dominate the error, so validate the complete signal path rather than relying only on the nominal ON resistance.
Keep the analog supply within +1.65 V to +4.5 V and use the documented +3 V condition when relying on 1.8 V logic compatibility. Place the supply bypass capacitor close to the device's supply and ground pins, and provide a low-impedance return path for the control inputs. The listed power consumption is below 0.2 uW, but actual system consumption also includes control-driver transitions and leakage, which should be checked under the intended signal state.
Do not assume that a 15 ns turn-on time guarantees a 15 ns usable settling time. Switching capacitance, source impedance, load capacitance, bandwidth, leakage, and charge injection determine when the analog output is valid. In measurement systems, allow the complete acquisition chain to settle before sampling. Verify the signal amplitude and polarity against the device's absolute maximum and recommended operating conditions in the current Renesas datasheet.
The 16-TSSOP package supports compact layouts, but analog switches should be positioned to minimize trace length between the switch pins and sensitive nodes. Route each switched signal with a continuous reference plane, avoid sharing return-current paths with digital control signals, and inspect crosstalk and off-state leakage using the actual PCB stack-up. The TSSOP package dimensions and pin numbering must be taken from the current manufacturer drawing before land-pattern release.
合規資訊
The supplied verified snippets do not explicitly state RoHS, REACH, halogen-free, lead-free, or conflict-minerals status. AEC-Q100 is treated as not applicable because this product is an analog interface IC rather than an automotive-qualified device in the supplied data.
