Part A
AD8184AR
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4591 個数
- Package
- SOIC-14
- Series
- インターフェース - アナログスイッチ - 特殊用途
Replacement verdict
Compatible functional replacement candidate
The AD8184AR and AD8182AR-REEL are both high-speed analog multiplexers from Analog Devices sharing the same SOIC-14 package and dual-supply architecture, making them a viable functional replacement candidate in many signal-routing applications. However, the AD8184AR is a 4:1 multiplexer while the AD8182AR-REEL is a dual 2:1 multiplexer, so channel configuration and switching topology differ. Designers should validate the specific channel count, switching logic, and bandwidth requirements against the target circuit before substituting one for the other.
Channel Configuration
Validation required
Package Type
High match
Supply Voltage Range
High match
Bandwidth and Switching Speed
Validation required
Parts at a glance
Part B
AD8182AR-REEL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 8087 個数
- Package
- SOIC-14
- Series
- インターフェース - アナログスイッチ、マルチプレクサ、デマルチプレクサ
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8184AR | AD8182AR-REEL | Why it matters |
|---|---|---|---|
| Function / Configuration | 4:1 multiplexer (4 inputs to 1 output) | 2:1 multiplexer (dual 2:1, 2 inputs to 1 output per channel) | The switching topology determines how many signal sources can be routed to an output, so these parts are not directly interchangeable in a given circuit. |
| Number of Channels | 1 channel (4:1) | 2 channels (dual 2:1) | Channel count affects how many independent signal paths can be switched, which is fundamental to board-level substitutability. |
| Inputs per Output | 4 inputs selectable to 1 output | 2 inputs selectable to 1 output (per channel) | The number of selectable inputs per output defines the multiplexing depth and directly impacts system architecture. |
| -3 dB Bandwidth | 700 MHz | 750 MHz | Bandwidth determines the maximum signal frequency the mux can pass with acceptable attenuation, critical for video and high-speed signal routing. |
| Slew Rate | 750 V/µs | 1000 V/µs | Slew rate limits how fast large signal transitions can be reproduced, affecting fidelity of fast edges and pulse signals. |
| Supply Voltage Range | ±5 V (dual supply) | ±5 V (dual supply) | Supply voltage compatibility ensures the part operates correctly in the target system's power rails. |
| Package | 14-lead SOIC | 14-lead SOIC | Package and pinout compatibility is essential for physical drop-in replacement on an existing PCB footprint. |
| Channel-to-Channel Switching | Single 4:1 mux with 2-bit select | Dual 2:1 mux with independent select lines | The control logic and select-line scheme differ, so the driving circuitry and truth table must match the chosen part. |
| Output Disable / High-Z | Output disable (high-impedance) supported | Output disable (high-impedance) supported | High-impedance disable allows multiple mux outputs to be bused together, which is important for expandable routing architectures. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8184AR | AD8182AR-REEL |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Obsolete | Obsolete |
| Mounting Type | Surface Mount | Surface Mount |
| Applications | Video | - |
| Multiplexer / Demultiplexer Circuit | 4:1 | - |
| Number of Channels | 1 | - |
| Voltage - Supply, Dual (V±) | ±4V ~ 6V | - |
| -3 dB Bandwidth | 700MHz | - |
| Features | Buffered | - |
| Operating Temperature | -40°C ~ 85°C (TA) | - |
Frequently asked questions
What are the primary differences between the AD8184AR and AD8182AR-REEL?
The AD8184AR is a 4:1 analog multiplexer, while the AD8182AR-REEL is a dual 2:1 analog multiplexer. Both are high-speed, low-power devices from Analog Devices, but they differ in switch configuration, channel count, and packaging format (the AD8182AR-REEL is supplied in tape-and-reel packaging for automated assembly).
Are the AD8184AR and AD8182AR-REEL pin-compatible?
No. The AD8184AR (4:1 mux) and AD8182AR-REEL (dual 2:1 mux) have different pin configurations and internal switch topologies. They are not pin-compatible and cannot be dropped into the same PCB footprint without redesign.
What is the bandwidth of these multiplexers?
Both the AD8184 and AD8182 are specified with a -3 dB bandwidth of 700 MHz (typical) for the AD8184 and 750 MHz (typical) for the AD8182, according to Analog Devices datasheets. These high bandwidths make them suitable for video and high-speed signal routing applications.
What supply voltage do the AD8184AR and AD8182AR-REEL require?
Both devices operate from a dual supply of ±5 V (typical), with a specified supply range of ±4.5 V to ±5.5 V. They are not specified for single-supply operation in the standard datasheet.
What is the difference in packaging between the AD8184AR and AD8182AR-REEL?
The AD8184AR is supplied in a 14-lead SOIC package in tube or tray form. The AD8182AR-REEL is supplied in a 14-lead SOIC package on tape-and-reel, which is intended for high-volume automated pick-and-place assembly. The "AR" suffix in both denotes the SOIC package; "REEL" indicates tape-and-reel packaging.
Can the AD8184AR be used as a replacement for the AD8182AR-REEL in an existing design?
No, not as a direct drop-in replacement. The AD8184AR is a 4:1 multiplexer with a single output, while the AD8182AR-REEL contains two independent 2:1 multiplexers. The channel count, control logic, and pinout differ, so substitution requires circuit and layout changes validated against the respective datasheets.
What are the typical applications for these multiplexers?
Both the AD8184 and AD8182 are used in video signal routing, RGB switching, high-speed data acquisition, and communication systems where fast switching and low distortion are required. The AD8184 suits 4-input selection, while the AD8182 suits dual-channel 2:1 selection such as I/Q or differential signal switching.