DG211CJ+ - 4-Channel SPST Analog Switch | Maxim Integrated
MPN： DG211CJ+ ✓ 啟用中DG211CJ+ 概覽
An analog switch is a semiconductor device that routes signals between circuit nodes under digital control. The DG211CJ+ belongs to the hierarchy of analog switches, multiplexers, interface ICs, and semiconductor components. Its four single-pole single-throw channels provide normally closed paths, making it useful when a system must maintain a connection until an active control signal changes the selected route.
The device provides a maximum on-resistance of 175 ohm and a 1:1 signal configuration across four circuits. The manufacturer identifies the DG211 family as CMOS analog switches with low cost and general-purpose switching functions. Operation across positive and negative supplies supports bipolar analog signals in instrumentation and signal-routing systems, while the individual digital controls allow each channel to be operated independently.
The DG211 and DG212 devices are described by the manufacturer as normally closed, quad SPST CMOS analog switches that can operate with supplies from ±4.5 V to ±18 V. Maxim also states that the DG211 family will not latch up if the power supplies are disconnected while input signals remain connected, and the devices feature guaranteed break-before-make switching. These characteristics help control transient current and undefined states during control transitions.
Typical uses include analog measurement front ends, process-control interfaces, communications equipment, test equipment, and peripheral signal routing. In a measurement system, separate DG211CJ+ channels can connect sensors or reference signals to a shared analog front end while keeping unused paths connected. The device can also support signal isolation and source selection when system behavior requires a default connection that remains active until commanded otherwise.
When designing a circuit around the DG211CJ+, verify input and output signal amplitudes against the supply rails, observe the control-logic thresholds, and maintain the specified continuous and peak terminal currents. Decoupling capacitors should be placed close to the supply pins, and control traces should be kept away from sensitive analog routes. The PDIP package also requires adequate insertion clearance and appropriate socket or soldering practices during assembly.
This product page combines the manufacturer family information, distributor listings, cross-reference findings, package details, and practical application guidance. It highlights verified distinctions among available DG211 ordering codes and focuses drop-in comparison on the same 16-pin PDIP footprint rather than presenting surface-mount or electrically different devices as direct replacements.
直接替換替代品，適用於 DG211CJ+ — 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。
DG211CJ
✅ 直接替換📋 參考替代品（不在目錄中）
DG211CJ-2
✅ 直接替換📋 參考替代品（不在目錄中）
DG211CJ+ 最大額定值與電氣特性
| Number of Channels | 4 channels |
| Switch Configuration | 4 × SPST |
| Signal Configuration | 1:1 |
| On-Resistance | 175 ohm maximum |
| Technology | CMOS |
| Supply Voltage Range | ±4.5 V to ±18 V |
| 封裝 | 16-pin PDIP |
| 安裝類型 | Through-hole |
| Switch Type | Normally closed SPST analog switch |
| Switching Behavior | Guaranteed break-before-make |
| Continuous Terminal Current | 30 mA maximum |
| Peak Terminal Current | 20 mA maximum |
| Storage Temperature | to +150 °C |
| Control Interface | Digital control inputs |
| Latch-Up Protection | No latch-up when supplies are disconnected with input signals connected |
DG211CJ+ 16-pin pdip 腳位配置指南
DG211CJ+（16-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： DG211CJ+.
請參閱 資料表 以查看完整腳位配置。
典型應用
DG211CJ+ 適用於 6 應用s: Analog Measurement Front Ends, Process-Control Signal Routing, Communications Equipment Signal Paths, Computer Peripheral Interface Routing, Test and Measurement Signal Selection, General-Purpose Signal Isolation.
Analog Measurement Front Ends
The DG211CJ+ fits multiplexed measurement systems because its four independent SPST paths can route sensors or references to a common analog front end. With a maximum on-resistance of 175 ohm and operation from ±4.5 V to ±18 V, it supports bipolar instrumentation signals while preserving a normally closed connection when no command is applied. Guaranteed break-before-make operation reduces contention when the measurement system changes sources. Confirm input amplitude, leakage, and terminal-current limits before assigning a high-impedance sensor directly to a switch path.
推薦
Process-Control Signal Routing
The DG211CJ+ can route control and feedback signals in process-control equipment because each of its four normally closed channels changes state independently. Its 175 ohm maximum on-resistance is suitable for many low- and moderate-impedance control paths, while dual supplies from ±4.5 V to ±18 V accommodate bipolar signals. The default closed path is useful when a valve, relay, or measurement channel must remain connected during reset or power transitions. Validate actuator current levels and isolation requirements against the 30 mA continuous terminal-current limit.
推薦
Communications Equipment Signal Paths
DG211CJ+ is applicable to general-purpose communications routing where several analog paths must be selected under digital control. Its four SPST channels, 1:1 configuration, and 175 ohm maximum on-resistance provide a straightforward routing element, while the ±4.5 V to ±18 V supply range supports positive and negative signal systems. Break-before-make operation helps prevent two sources from being connected simultaneously. For high-frequency links, verify bandwidth, charge injection, off-isolation, and capacitance in the complete DG211 electrical data before using the switch in the signal path.
推薦
Computer Peripheral Interface Routing
The DG211CJ+ can support signal routing in computer-peripheral and general-purpose interface equipment where four independently controlled analog paths are required. Normally closed SPST behavior provides predictable defaults, and the through-hole 16-pin PDIP package simplifies prototyping and repair on conventional PCBs. The 175 ohm maximum on-resistance should be included in the input-impedance and bandwidth calculation, while the 30 mA continuous current limit must not be exceeded. Use the manufacturer pin-description table when assigning control and analog terminals.
推薦
Test and Measurement Signal Selection
DG211CJ+ is suitable for selecting among several low-level signals in a test fixture because its four normally closed channels can maintain default connections until control inputs change them. Maximum on-resistance is 175 ohm, so source impedance and downstream loading must be considered for high-precision measurements. Operation across ±4.5 V to ±18 V supports bipolar test signals, and guaranteed break-before-make behavior helps avoid accidental source contention. For precision instrumentation, check off-state leakage and off-isolation against the manufacturer limits before finalizing the fixture design.
推薦
General-Purpose Signal Isolation
DG211CJ+ can implement basic signal isolation or default-path routing with its four independent normally closed switches. Opening a selected path isolates that route while the other channels retain their defined states, making the device useful for source selection and fault-management circuits. Its 175 ohm maximum on-resistance introduces series loss that must be included in the signal-path budget, and the maximum continuous terminal current is 30 mA. Confirm that leakage, isolation, and off-state requirements are adequate for the specific source and load.
推薦
推薦產品摘要
工程參考資料，適用於 DG211CJ+ — 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 | DG211CJ | DG211CJ-2 |
|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | 16-pin PDIP | 16-pin PDIP | 16-pin PDIP |
| Number of Channels | 4 | 4 | 4 |
| Switch Configuration | 4 × SPST | 4 × SPST | 4 × SPST |
| Signal Configuration | 1:1 | 1:1 | 1:1 |
| On-Resistance | 175 ohm maximum | 175 ohm maximum | 175 ohm maximum |
| Technology | CMOS | CMOS | CMOS |
| Supply Voltage Range | ±4.5 V to ±18 V | ±4.5 V to ±18 V | ±4.5 V to ±18 V |
| Switching Behavior | Guaranteed break-before-make | Guaranteed break-before-make | Guaranteed break-before-make |
| Ordering Designation | DG211CJ+ | DG211CJ | DG211CJ-2 |
主要差異化特點
- Four independent normally closed channels in a through-hole package (對比DG211CJZ)
- Direct same-package ordering-code match (對比DG211CJ)
- Documented pin, package, and principal-characteristic consistency (對比DG211CJ-2)
設計說明
Treat the DG211CJ+ as a four-channel, normally closed SPST switch rather than a conventional open switch. A low control input leaves the associated path closed according to the device truth table, so software and hardware defaults should be established intentionally. Confirm the exact control polarity and pin assignment in the DG211 manufacturer data sheet before connecting external logic, and avoid assuming that every DG211 ordering suffix has identical temperature or qualification ratings.
Place the DG211CJ+ where analog routing lines and digital control lines can remain physically separated. Route each switched signal directly to its assigned terminal, keep copper and test-probe contact away from exposed switch nodes, and use a ground reference appropriate to the analog system. Because the package is a 16-pin PDIP, verify pin-one orientation against the manufacturer drawing and allow adequate spacing for socket soldering, inspection, and rework.
Include the maximum 175 ohm on-resistance when calculating insertion loss for every switched path. Estimated: for a 1 kΩ load, a 175 ohm series resistance reduces the output to approximately 0.851 of the input before accounting for switch leakage. This ratio uses only the maximum on-resistance and a 1 kΩ load; actual performance also depends on the complete signal, frequency, and source impedance.
Apply the specified continuous and peak terminal-current limits to each switched terminal, not merely to the total device. The documented maximum continuous terminal current is 30 mA and the maximum peak terminal current is 20 mA. If a load can exceed those limits, add an external driver or relay rather than relying on the DG211CJ+ for current switching, and ensure that externally powered signals cannot exceed the absolute input and output ratings.
合規資訊
The manufacturer documentation identifies the DG211 family as a production product, but no explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations were included in the referenced product information.