DG409CJ+ - Dual 4:1 CMOS Multiplexer | Analog Devices
MPN: DG409CJ+ ✓ Hoạt độngDG409CJ+ Tóm tắt
An analog multiplexer is an interface IC that routes one of several input signals to an output terminal under digital control. The DG409 family is described as an improved 8-channel or dual 4-channel CMOS analog multiplexer. In each 4:1 section, four inputs share one output, while separate address-select inputs determine the active path. This places the device in the analog switch and multiplexer hierarchy within broader signal-routing and interface semiconductor systems.
Key features include a maximum on-resistance of 100 ohm, 150 ns switching time, low off leakage current of 500 pA, and operation across a 5 V to 30 V supply range. The manufacturer also identifies guaranteed channel matching of 8 ohm maximum and signal-range flatness of 9 ohm maximum for the redesigned DG408 and DG409 families. These characteristics help minimize gain error, channel-to-channel mismatch, and distortion when routing precision analog signals.
The DG409CJ+ uses CMOS multiplexing architecture with separate control logic for the two 4:1 sections. Break-before-make switching prevents the incoming and outgoing paths from conducting simultaneously during transition, reducing signal contention in test, measurement, and instrumentation systems. The 16-DIP package provides through-hole mounting and approximately 7.62 mm lead pitch according to the verified distributor listing.
Typical uses include automated test equipment, data acquisition, analog signal routing, industrial control, instrumentation, and communications systems. One multiplexer section can select among four sensor outputs while the other routes a separate group of four inputs, allowing a compact dual-bank routing architecture. Designers must also account for the relatively high on-resistance compared with modern low-resistance multiplexers when driving high-impedance or high-capacitance loads.
For PCB design, place the DG409CJ+ close to the routed analog signals to minimize trace capacitance and pickup. Confirm logic levels and supply tolerances before decoding address inputs, and verify downstream loading because the 100 ohm maximum path resistance can create signal attenuation with a finite input impedance.
This page combines verified manufacturer and distributor information, drop-in family alternatives, application guidance, and a parameter-by-parameter comparison. It also identifies unavailable electrical details explicitly rather than estimating unverified values, helping engineers evaluate the DG409CJ+ for new designs and legacy replacements.
Bộ thay thế dễ dàng lắp đặt cho DG409CJ+ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với DG409CJ+ (cùng hình factor và footprint) — khác nhau ở Multiplexer Configuration, Package.
DG409DJ+
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DG409DJ+
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DG409CJ-
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DG409AK/883B
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DG409CY
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DG409CJ+ Thông số kỹ thuật
| Multiplexer Configuration | Dual 4:1 (8-channel or dual 4-channel) |
| Number of Circuits | 2 circuits |
| Maximum On-Resistance | 100 ohm |
| Switching Time | 150 ns |
| Supply Voltage Range | 5 V to 30 V |
| Maximum Supply Voltage | 30 V |
| Off Leakage Current | 500 pA |
| Channel Matching | 8 ohm maximum |
| On-Resistance Flatness | 9 ohm maximum |
| Switching Configuration | Single-pole single-throw, 4:1 |
| Transition Behavior | Break-before-make |
| Technology | CMOS |
| Hộp | 16-pin DIP, 0.300 in (7.62 mm) lead pitch |
| Kiểu lắp đặt | Through-hole |
| Maximum Power Dissipation | 842 mW |
Cấu hình chân DG409CJ+
| Chân 1 | A1 — Common terminal for section A |
| Chân 2 | A2 — Multiplexed input or output for section A |
| Chân 3 | A3 — Multiplexed input or output for section A |
| Chân 4 | A4 — Multiplexed input or output for section A |
| Chân 5 | V+ — Positive supply |
| Chân 6 | S2 — Address-select input for section A |
| Chân 7 | S1 — Address-select input for section A |
| Chân 8 | B1 — Common terminal for section B |
| Chân 9 | V- — Negative supply |
| Chân 10 | B2 — Multiplexed input or output for section B |
| Chân 11 | B3 — Multiplexed input or output for section B |
| Chân 12 | B4 — Multiplexed input or output for section B |
| Chân 13 | S3 — Address-select input for section B |
| Chân 14 | S4 — Address-select input for section B |
| Chân 15 | EN — Enable input |
| Chân 16 | GND — Ground reference |
Ứng dụng tiêu biểu
DG409CJ+ phù hợp cho 6 Áp dụngs: Automated Test Equipment Signal Routing, Data Acquisition Multiplexing, Industrial Process Measurement, Instrumentation and Measurement, Analog Communications Signal Selection, Legacy Through-Hole Control Systems.
Automated Test Equipment Signal Routing
The DG409CJ+ is appropriate for automated test equipment because its two independent 4:1 sections can route eight analog sources through one 16-DIP device. With 150 ns switching time, 100 ohm maximum on-resistance, and break-before-make behavior, it can connect test channels while limiting simultaneous-path contention. The main design consideration is settling time: after changing an address, allow the 100 ohm path resistance and source capacitance to settle before taking a measurement. Its 16-DIP package is also convenient for legacy through-hole test fixtures.
Được đề xuất
Data Acquisition Multiplexing
The DG409CJ+ can select among four sensor inputs in each of two banks, making it useful for multichannel data-acquisition systems. Its 500 pA off-leakage and 9 ohm maximum on-resistance flatness help preserve measurements from high-impedance sources, while the 150 ns switching specification provides fast path selection. Because the maximum path resistance is 100 ohm, buffer the selected output when driving low-impedance loads or when amplifier input bias current would otherwise create an offset. Supply decoupling and clean grounding remain important near the analog pins.
Được đề xuất
Industrial Process Measurement
The DG409CJ+ fits industrial process-measurement systems that must select among several analog inputs, including transducer, sensor, or conditioned control signals. Its dual 4:1 organization reduces the number of separate routing devices, while operation from 5 V to 30 V provides compatibility with common industrial supply arrangements. The 100 ohm on-resistance must be included when calculating divider errors at the selected channel. Engineers should also verify the unresolved operating-temperature range and isolation strategy for the deployed environment.
Được đề xuất
Instrumentation and Measurement
The DG409CJ+ supports compact instrumentation front ends by routing two groups of four analog inputs to shared measurement paths. Its 150 ns switching behavior helps minimize acquisition dead time, while break-before-make operation reduces unwanted overlap between source channels. Performance depends on the selected device’s source impedance and downstream capacitance; the 100 ohm maximum on-resistance can interact with long PCB traces and probe capacitance. Place the multiplexer near the signal source and keep address traces away from sensitive analog nodes to reduce coupling.
Được đề xuất
Analog Communications Signal Selection
The DG409CJ+ can select among four low-frequency analog signals in each of two sections for communications or interface equipment. The dual 4:1 organization allows shared downstream amplification while keeping source selection under digital control. Its 100 ohm maximum path resistance should be compared with the line impedance and receiver input, because attenuation can affect level-sensitive links. The 500 pA off-leakage is useful for high-impedance sources, but long traces and connectors can increase leakage and susceptibility to interference beyond the IC specification.
Được đề xuất
Legacy Through-Hole Control Systems
The DG409CJ+ is particularly useful for repairing or upgrading legacy through-hole control boards because it uses a 16-pin DIP package with 0.300 in, or 7.62 mm, lead pitch. Its dual 4:1 configuration can replace two groups of discrete switching paths where a modern surface-mount redesign is undesirable. Before installation, verify the original pinout, address truth table, common terminals, and supply polarity against the manufacturer data sheet. Also check whether the legacy board requires a temperature grade or qualification level not established by the available excerpts.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DG409CJ+ — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | DG409DJ+ | DG409DJ | DG409CJ- | DG409AK/883B | DG409CY |
|---|---|---|---|---|---|---|
| Package | 16-DIP, 0.300 in (7.62 mm) pitch | 16-DIP - same | 16-DIP - same | 16-DIP - same | 16-DIP - same | 16-DIP - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Multiplexer Configuration | Dual 4:1, 2 circuits | Dual 4:1 | Dual 4:1 | Dual 4:1 | Dual 4:1 | Dual 4:1 |
Bảo phân biệt quan trọng
- Dual 4:1 routing in one 16-DIP package (vsDG409DJ+)
- Improved channel matching for precision routing (vsDG409CJ-)
- Break-before-make switching for safer path transitions (vsDG409AK/883B)
- Verified switching speed and supply range (vsDG409CY)
Ghi chú thiết kế
Treat the 100 ohm maximum on-resistance as part of the signal-path design, not as an ideal switch. With a source resistance of 1 kohm, the switch can contribute roughly a 9% voltage-divider attenuation before the effect of downstream loading is considered. Use high-impedance receivers or buffer the muxed output when amplitude accuracy matters. The estimated 9% value is an illustrative calculation using 100 ohm and 1 kohm inputs, not a manufacturer specification.
Place the DG409CJ+ near the multiplexer channels and minimize the distance between the IC pins, analog traces, and source components. Keep the four paths associated with each section physically similar where possible, and route address-select lines away from high-impedance analog inputs. Provide local supply bypassing and a solid ground return to prevent switching transients from appearing on the selected signal. The DIP footprint makes this guidance straightforward to implement on a through-hole prototype board.
Do not assume that every DG409 ordering suffix is automatically interchangeable merely because the packages are similar. Confirm the 16-DIP pinout, address truth table, enable behavior, common-terminal assignments, supply range, and operating-temperature grade against the manufacturer ordering table. In particular, the supplied data identifies DG409AK/883B as a qualified ordering option but does not state its exact temperature or qualification limits, so those requirements must not be inferred.
The verified maximum power dissipation is 842 mW for the cited 16-DIP DG409CJ- device. Design the supply path and board layout with margin below that limit, especially when operating at the upper end of the 5 V to 30 V supply range. Because the maximum supply voltage is substantially higher than many logic systems, use separate, adequately decoupled analog supply routing where practical. Verify the final dissipation under actual channel conditions rather than assuming continuous worst-case loading.
Thông tin tuân thủ
The supplied manufacturer and distributor excerpts do not explicitly state the DG409CJ+ RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred from the family name or ordering suffix.
