DG442DJ-E3

Switch Time (Ton, Toff) (Max):	250ns, 210ns
Base Part Number:	DG442
Supplier Device Package:	16-DIP
Package / Case:	16-DIP (0.300", 7.62mm)
Operating Temperature:	-40°C ~ 85°C (TA)
Crosstalk:	-100dB @ 1MHz
Current - Leakage (IS(off)) (Max):	500pA
Channel Capacitance (CS(off), CD(off)):	4pF, 4pF
Charge Injection:	-1pC
-3db Bandwidth:	--
Series:	--
Voltage - Supply, Dual (V±):	±15V
Voltage - Supply, Single (V+):	12V
Channel-to-Channel Matching (ΔRon):	4 Ohm (Max)
On-State Resistance (Max):	85 Ohm
Number of Circuits:	4
Multiplexer/Demultiplexer Circuit:	1:1
Switch Circuit:	SPST - NO
Part Status:	Active
Packaging:	Tube

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<h2>DG442DJ-E3 Application Field and Working Principle</h2>The DG442DJ-E3 is a quad, 1-channel Analogue Switch. It is a digital-input type analogue switch family designed and developed by ON Semiconductor. This device is ideal for use in multiplexing, demultiplexing, and switching applications in telecommunication, home and office equipment, military, and industrial products. <h3>Overview of DG442DJ-E3</h3>The DG442DJ-E3 quad, 1-channel Analogue Switch is a single-pole, single-throw switch (SPST). It has two pins: an input pin (COM) and an output pin (NO). It operates under 0.4V supply voltage and 8mA minimum off-state current. It features a minimum input leakage current of 10 nA and a maximum break-before-make time of 1 microsecond. The device is compatible with CMOS logic levels and has a high-input impedance of 100KΩ. It is also equipped with Schmitt trigger which allows it to detect various voltage levels and provide transition from logic high to logic low.<h3>Applications of DG442DJ-E3</h3>The DG442DJ-E3 is suitable for multiplexing and demultiplexing applications in a wide range of fields. It is widely used in communications systems, home and office equipment such as printers, fax machines, and telephones, automotive, and data conversion applications. The device can also be used as a buffer amplifier in multiplexed systems. Moreover, the DG442DJ-E3 can be used in power supplies and voltage regulation, signal conditioning, and medical equipments such as MRI and CT scanners. It provides signal isolation between multiplexed signals for improved system performance and better signal transmission.<h3>Working Principle of DG442DJ-E3</h3>The DG442DJ-E3 is a digital-input type analogue switch which requires logic signals to control the switching function. The logic signal is applied to the COM pin and is fed to a digital logic circuit. This logic circuit creates an output signal which drives the output pin (NO). The output pin acts as a single-pole single-throw switch and can be connected to either two devices or to two wires with different signals.<h3>Conclusion</h3>The DG442DJ-E3 is a quad, 1-channel analogue switch device ideal for multiplexing and demultiplexing applications. It features a low input leakage current and a high-input impedance. It is suitable for a wide range of applications in the field of communications, automobiles, data conversion, and medical equipments. Its digital input type design makes it easy to use and control.

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