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Description
The ADG438F and ADG439F are CMOS analog multiplexers, with the ADG438F comprising eight single channels and the ADG439F comprising four differential channels. These multiplexers provide fault protection. Using a series n-channel, p-channel, and n-channel MOSFET structure, both device and signal source protection is provided in the event of an overvoltage or power loss. The multiplexer can withstand continuous overvoltage inputs from ?40 V to +55 V. During fault conditions with power supplies off, the multiplexer input (or output) appears as an open circuit and only a few nanoamperes of leakage current flows. This protects not only the multiplexer and the circuitry driven by the multiplexer, but also protects the sensors or signal sources which drive the multiplexer. The ADG438F switches one of eight inputs to a common output as determined by the 3-bit binary address lines, A0, A1, and A2. The ADG439F switches one of four differential inputs to a common differential output as determined by the 2-bit binary address lines, A0 and A1. An EN input on each device is used to enable or disable the device. When disabled, all channels are switched off. Product Highlights Fault Protection. The ADG438F and ADG439F can with-stand continuous voltage inputs up to ?40 V or +55 V. When a fault occurs due to the power supplies being turned off, all the channels are turned off and only a leakage current of a few nanoamperes flows. On channel saturates while fault exists. Low RON. Fast Switching Times. Break-Before-Make Switching. Switches are guaranteed break-before-make so that input signals are protected against momentary shorting. Trench Isolation Eliminates Latch-Up. A dielectric trench separates the p-channel and n-channel MOSFETs thereby preventing latch-up. Improved Off Isolation. Trench isolation enhances the channel-to-channel isolation of the ADG438F/ADG439F. Applications Data acquisition systems Industrial and process control systems Avionics test equipment Signal routing between systems High reliability control systems
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tON 250 ns maximum tOFF 150 ns maximum Fault and overvoltage protection: +55 V Break-before-make construction TTL- and CMOS-compatible inputs
APPLICATIONSData acquisition systems Industrial and process control systems Avionics test equipment Signal routing between systems High reliability control systems
The ADG438F and ADG439F are CMOS analog multiplexers, with the ADG438F comprising eight single channels and the ADG439F comprising four differential channels. These multiplexers provide fault protection. Using a series n-channel, p-channel, and n-channel MOSFET structure, both device and signal source protection is provided in the event of an overvoltage or power loss. The multiplexer can withstand continuous overvoltage inputs from +55 V. During fault conditions with power supplies off, the multiplexer input (or output) appears as an open circuit and only a few nanoamperes of leakage current flows. This protects not only the multiplexer and the circuitry driven by the multiplexer, but also protects the sensors or signal sources which drive the multiplexer. The ADG438F switches one of eight inputs to a common output as determined by the 3-bit binary address lines, A0, A1, and A2. The ADG439F switches one of four differential inputs to a common differential output as determined by the 2-bit binary address lines, A0 and An EN input on each device is used to enable or disable the device. When disabled, all channels are switched off.
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.
1. Fault Protection. The ADG438F and ADG439F can withstand continuous voltage inputs +55 V. When a fault occurs due to the power supplies being turned off, all the channels are turned off and only a leakage current of a few nanoamperes flows.
2. On channel saturates while fault exists. 3. Low RON. 4. Fast Switching Times. 5. Break-Before-Make Switching. Switches are guaranteed
break-before-make so that input signals are protected against momentary shorting. 6. Trench Isolation Eliminates Latch-Up. A dielectric trench separates the p-channel and n-channel MOSFETs thereby preventing latch-up. 7. Improved Off Isolation. Trench isolation enhances the channel-to-channel isolation of the ADG438F/ADG439F.
D to Rev. E Updated Format : Universal Changes to Product Highlights Section and General Description : 1 Changes to Specification Section and Table : 3 Changes to Table : 5 Added Table 3 and Table 4; Renumbered Sequentially : 6 Changes to Figure 5 to Figure : 7 Changes to Figure 11 to Figure : 8 Added Figure 14 to Figure : 8 Changes to Figure 18 to Figure 20, Figure 23, and Figure : 9 Changes to Terminology Section : 12 Changes to Theory of Operation Section, Figure 29, and Figure : 13 Updated Outline Dimensions : 14 Changes to Ordering Guide : 15
ESD Caution : 5 Pin Configuration and Function Descriptions : 6 Typical Performance Characteristics : 7 Test Circuits : 9 Terminology : 12 Theory of Operation : 13 Outline Dimensions : 14
SPECIFICATIONSDIGITAL INPUTS Input High Voltage, VINH Input Low Voltage, VINL Input Current IINL or IINH Digital Input Capacitance, CIN
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I recently ordered an IC SFH6343 from your company and I am very pleased with its performance. The IC is reliable and efficient, and it has been working great in my project. It is easy to use and the instructions were clear and concise. I am very satisfied with the quality of the product and the customer service I received. Thank you for providing me with a great product and excellent customer ser
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I enjoyed learning how to use these. Fixed another broken project with it. Excellent quality, and it arrived in a protective tube designed to prevent damage.
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The order is accepted, decorated and shipped quickly. Packing is good. Tracking works. Satisfied
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I enjoyed learning how to use these. Fixed another broken project with it. Excellent quality, and it arrived in a protective tube designed to prevent damage.
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ADG439FBRZ
ADG439FBRZ has several brands around the world that may have alternate names for ADG439FBRZ due to regional differences or acquisition. ADG439FBRZ may also be known as the following names:
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