CD4097BE - 20V Dual 8:1 Analog Multiplexer | Texas Instruments
MPN： CD4097BE ✓ 啟用中CD4097BE 概覽
An analog multiplexer is a semiconductor routing device that selects one of several analog inputs and connects it to a common terminal. In multiplex mode, the selected common terminal receives the active channel; in demultiplex mode, the selected channel terminal receives the common signal. The CD4097B family is digitally controlled while carrying analog signals, placing it between CMOS control logic and external analog front ends. Internal address decoding reduces the control logic required from three address inputs plus an enable input to a binary selection interface.
Key verified features include a 20 V maximum supply rating, two 8:1 circuits, eight selection states per circuit, and approximately 240 ohm on-resistance. The manufacturer describes the family as having low on-resistance, low off-leakage, and relatively constant on-resistance across the applied signal range. These characteristics make the mux suitable for routing sensor outputs, measurement inputs, or low-frequency control signals where a compact, reliable selection network is required.
The CD4097BE belongs to the CD4000 CMOS logic family and operates from digital address and enable signals. Its 24-pin PDIP package is intended for through-hole PCB assembly rather than high-density surface-mount designs. Because the supplied excerpts do not include complete timing, logic-level, leakage-current, temperature, or absolute-maximum tables, designers should consult the TI CD4097B datasheet before finalizing edge cases.
Typical uses include multiplexed sensor acquisition, programmable gain or filter selection, data acquisition systems, instrumentation, and embedded measurement boards. The multiplexer should be placed where the selected signal bandwidth, source impedance, injected noise, and settling time are compatible with the CD4097B. Digital ground and analog return paths should be arranged carefully so control switching transients do not distort the selected measurement.
The principal design trade-off is that a multiplexed architecture reduces the number of external analog connections but concentrates signal-routing behavior in one device. Verify the selected channel’s resistance, leakage, charge injection, and settling behavior against the measurement bandwidth. If the analog source has high impedance, use a suitable buffer after the mux or account for the mux impedance in the complete signal path.
This product page combines the verified manufacturer and distributor identifiers, package information, and functional context with explicit data gaps for unprovided electrical limits. It is intended to support initial design selection, while the manufacturer datasheet remains the authoritative source for production design decisions and qualification requirements.
直接替換替代品，適用於 CD4097BE — 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。
此系列的變體
與下列產品可直接替換的同系列型號： CD4097BE （相同外形與佔位） — 差異在於 Number of Channels, Product Type, Mounting Type, Package, Address Decoding.
CD4097BEE4
✅ 直接替換📋 參考替代品（不在目錄中）
CD4097BM
✅ 直接替換聯絡詢價
查看資料表 →CD4097B
✅ 直接替換📋 參考替代品（不在目錄中）
CD4097BME4
✅ 直接替換📋 參考替代品（不在目錄中）
CD4097BF
✅ 直接替換📋 參考替代品（不在目錄中）
CD4097BE 規格
| Product Type | Dual 8:1 analog multiplexer |
| Number of Circuits | 2 circuits |
| Number of Channels | 1 channel per circuit |
| Multiplex Ratio | 8:1 per circuit |
| Number of Selection States | 8 per circuit |
| Maximum Supply Voltage | 20 V |
| Typical On-Resistance | 240 ohm |
| Address Decoding | Internal |
| Control Type | Digital CMOS control |
| 封裝 | 24-pin PDIP |
| 安裝類型 | Through-hole |
| Analog Signal Type | Single-ended analog |
| Operating Mode | Multiplexer or demultiplexer |
| Application | Analog signal routing |
| Product Family | CD4000 CMOS logic |
| Manufacturer | Texas Instruments |
CD4097BE 24-pin pdip 腳位配置指南
CD4097BE（24-pin pdip 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： CD4097BE.
請參閱 資料表 以查看完整腳位配置。
典型應用
CD4097BE 適用於 6 應用s: Multiplexed Sensor Acquisition, Programmable Filter Selection, Data Acquisition Systems, Programmable Gain and Attenuation, Industrial Control Signal Routing, Instrumentation and Calibration Paths.
Multiplexed Sensor Acquisition
The CD4097BE fits low-to-moderate-bandwidth sensor acquisition when several analog inputs must share one measurement channel. Each 8:1 circuit can select among eight sensor or conditioning outputs, reducing the number of front-end connections and helping organize mixed sensor wiring. The verified 240 ohm nominal on-resistance must be included in the source impedance and gain-error calculation, especially for resistive dividers or sensor outputs. CMOS address decoding keeps selection logic compact. Designers should place the mux close to the analog input network, keep traces short, and verify settling and leakage against the measurement bandwidth before using it with high-impedance sources.
推薦
Programmable Filter Selection
The CD4097BE can route analog signals into one of several filter or signal-conditioning stages when the system needs selectable measurement bandwidth or gain paths. Its dual 8:1 architecture allows two independent routing groups, which is useful when separate filter banks must be selected according to a measurement mode. The 240 ohm nominal on-resistance may alter filter transfer behavior, so it should be included in the source and load model. Internal address decoding reduces control wiring, but the selected path still requires careful grounding and short analog routing to avoid adding noise or crosstalk.
推薦
Data Acquisition Systems
CD4097BE is suitable for multiplexing multiple analog channels into a shared data-conversion or processing path in compact instrumentation. Two independent 8:1 sections can handle separate banks of channels and support parallel measurement sequencing when their select controls are driven independently. The 24-pin PDIP package is convenient for through-hole prototypes and legacy industrial boards, while the verified 20 V device rating gives designers an initial supply reference. Final design work should confirm input swing, leakage, switching speed, and logic thresholds from the TI datasheet.
推薦
Programmable Gain and Attenuation
The dual multiplexer can select among multiple passive or active gain networks when a system must adapt its input range without changing the downstream converter. Each 8:1 section provides independent channel selection, allowing separate coarse-gain, attenuation, or calibration paths. The nominal 240 ohm on-resistance should be modeled with the selected network because it can affect accuracy, bandwidth, and noise. Use short traces, stable reference grounding, and buffered outputs where the source impedance is high. The device’s internal address decoding helps keep the control section compact.
推薦
Industrial Control Signal Routing
CD4097BE can route low-frequency control or measurement signals in industrial equipment where multiple sources must be selected into a common controller input. The through-hole 24-pin PDIP format is useful for existing industrial boards, while the two 8:1 sections permit independent routing banks. Because industrial environments can contain switching transients, the analog traces should be physically separated from high-current and digital timing paths. The 240 ohm nominal on-resistance is acceptable only if the downstream input impedance is sufficiently higher than that resistance; otherwise, add a buffer or revise the routing network.
推薦
Instrumentation and Calibration Paths
The CD4097BE is appropriate for instrumentation that switches between measurement, calibration, and reference inputs. Two independent 8:1 sections can route separate signal banks into common analog stages, simplifying calibration sequencing while keeping the control interface digital. The nominal 240 ohm resistance and any off-channel leakage will influence error budgets, especially for precision measurements; these values must be taken from the full manufacturer specification. Use a quiet analog ground, maintain consistent return paths, and avoid routing the mux close to high-current switching nodes.
推薦
推薦產品摘要
工程參考資料，適用於 CD4097BE — 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 | CD4097BEE4 | CD4097BM | CD4097B | CD4097BME4 | CD4097BF |
|---|---|---|---|---|---|---|
| Package | 24-pin PDIP | 24-pin PDIP | 24-pin PDIP | 24-pin PDIP - suffix must be verified | 24-pin PDIP | SOIC-24 surface mount - not same footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Multiplex Function | Dual 8:1 analog multiplexer | CD4097B family; exact suffix data not supplied | CD4097B family; exact suffix data not supplied | 8:1 differential 1-channel analog multiplexer | CD4097B family; comparison reports full replacement | CD4097B family; 24-pin surface-mount variant |
| Mounting Type | Through-hole | Through-hole | Through-hole | Through-hole | Through-hole | Surface mount |
主要差異化特點
- Dual independent 8:1 routing (對比CD4059AE)
- Through-hole 24-pin PDIP format (對比CD4097BF)
- Internal address decoding (對比CD4097B)
設計說明
Treat the analog common and channel routes as sensitive signal paths. Place the CD4097BE near the selected analog network, keep traces short, and route them away from address, enable, clock, and high-current traces. A solid analog ground plane and a controlled return path help reduce injected noise. Because the supplied TI excerpts do not provide exact layout guidance, follow the manufacturer datasheet and validate the final placement with signal-integrity measurements.
Include the nominal 240 ohm on-resistance in the complete source-load calculation. Estimated: if the connected source resistance is 2.4 kohm, a 240 ohm mux path produces a 9.1% divider loss before downstream gain; this is an illustrative arithmetic estimate, not a datasheet specification. High-impedance sensor nodes may require an op-amp buffer. Also check whether channel leakage, switching transients, and settling time meet the required measurement bandwidth.
Do not substitute a surface-mount CD4097BF for a PDIP CD4097BE without redesigning the PCB footprint and confirming the electrical grade. Do not interpret the 20 V identifier as a substitute for the complete operating-voltage range. Verify address and enable polarity, common-terminal assignments, input limits, decoupling requirements, and temperature grade in the TI datasheet before release. The supplied data does not establish a complete cross-brand equivalent.
合規資訊
The supplied verified data does not provide explicit RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 statements. The family is an analog interface multiplexer rather than an automotive-qualified device by default; verify current manufacturer declarations before production release.