DG407DJ Equivalent & Substitute Parts

Part Overview

The DG407DJ is a dual 8:1 analog multiplexer/demultiplexer IC manufactured by Analog Devices Inc./Maxim Integrated, housed in a 28-DIP package with 100Ohm on-state resistance. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The part operates across a wide supply voltage range (5V to 30V single supply, or ±4.5V to ±20V dual supply) and is suitable for signal routing and switching applications in analog circuits.

Key Parameters

Parameter	Value
Multiplexer/Demultiplexer Circuit	8:1
Number of Circuits	2
On-State Resistance (Max)	100Ohm
Channel-to-Channel Matching (ΔRon)	1.5Ohm
Voltage - Supply, Single (V+)	5V ~ 30V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V
Switch Time (Ton, Toff) (Max)	200ns, 150ns
Charge Injection	2pC
Channel Capacitance (CS(off), CD(off))	8pF, 65pF
Current - Leakage (IS(off)) (Max)	500pA
Crosstalk	-92dB @ 100kHz
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	28-DIP (0.600", 15.24mm)
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution eligibility for the DG407DJ is determined by the following core parameters:

Multiplexer Configuration: 8:1 dual circuit topology
Package Compatibility: 28-DIP form factor with identical pin spacing (0.600", 15.24mm)
On-State Resistance: Maximum 100Ohm specification
Supply Voltage Range: Compatibility with 5V to 30V single supply or ±4.5V to ±20V dual supply operation
Mounting Type: Through-hole technology

Substitute parts must maintain functional equivalence in these parameters to ensure direct replacement capability without circuit redesign.

Parameter Comparison

Parameter	DG407DJ	DG407DJ+	ADG407BNZ
Multiplexer/Demultiplexer Circuit	8:1	8:1	8:1
Number of Circuits	2	2	2
On-State Resistance (Max)	100Ohm	100Ohm	80Ohm
Channel-to-Channel Matching (ΔRon)	1.5Ohm	1.5Ohm	4Ohm
Voltage - Supply, Single (V+)	5V ~ 30V	5V ~ 30V	12V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V	±4.5V ~ 20V	±15V
Switch Time (Ton, Toff) (Max)	200ns, 150ns	200ns, 150ns	160ns, 150ns
Charge Injection	2pC	2pC	8pC
Channel Capacitance (CS(off), CD(off))	8pF, 65pF	8pF, 65pF	5pF, 25pF
Current - Leakage (IS(off)) (Max)	500pA	500pA	500pA
Crosstalk	-92dB @ 100kHz	-92dB @ 100kHz	-85dB @ 100kHz
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	28-DIP (0.600", 15.24mm)	28-DIP (0.600", 15.24mm)	28-DIP (0.600", 15.24mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

DG407DJ+ (Direct Upgrade)

The DG407DJ+ is the primary substitute for the obsolete DG407DJ. This part maintains identical electrical specifications across all critical parameters: 8:1 dual multiplexer configuration, 100Ohm on-state resistance, 1.5Ohm channel matching, and full supply voltage range compatibility (5V to 30V single supply, ±4.5V to ±20V dual supply). The DG407DJ+ is in active product status and carries ROHS3 compliance certification, addressing regulatory requirements for new designs. Pin-for-pin compatibility and identical package geometry (28-DIP) enable direct board-level substitution without circuit modification.

ADG407BNZ (Performance-Enhanced Alternative)

The ADG407BNZ is a manufacturer-recommended alternative from Analog Devices Inc. that offers improved electrical performance in specific parameters: 80Ohm on-state resistance (versus 100Ohm), faster switch time (160ns Ton versus 200ns), and lower charge injection (8pC versus 2pC). However, this part operates under restricted supply voltage conditions (12V single supply or ±15V dual supply only) and exhibits reduced channel matching (4Ohm ΔRon versus 1.5Ohm) and crosstalk performance (-85dB versus -92dB). The ADG407BNZ is suitable only for applications where the narrower supply voltage range and relaxed matching specifications are acceptable. This part is also ROHS3 compliant and in active status.

Selection between DG407DJ+ and ADG407BNZ depends on circuit supply voltage requirements and signal integrity specifications. For designs requiring the full 5V to 30V supply range or superior channel matching, DG407DJ+ is the appropriate choice. For fixed 12V or ±15V supply applications where lower on-state resistance is beneficial, ADG407BNZ may be considered.

Frequently Asked Questions (FAQ)

Q: Can DG407DJ+ be used as a direct replacement for DG407DJ?

A: Yes. The DG407DJ+ maintains identical electrical specifications and package geometry. No circuit redesign is required for substitution.

Q: What is the primary reason to transition from DG407DJ to an alternative part?

A: The DG407DJ is classified as obsolete. DG407DJ+ is the recommended substitute to ensure long-term component availability and regulatory compliance (ROHS3).

Q: Are there supply voltage restrictions when using ADG407BNZ?

A: Yes. The ADG407BNZ operates at fixed supply voltages: 12V single supply or ±15V dual supply. It does not support the full 5V to 30V range of the original DG407DJ. Verify circuit supply voltages before selection.

Q: How do on-state resistance differences affect circuit performance?

A: The ADG407BNZ has lower on-state resistance (80Ohm versus 100Ohm), which reduces signal attenuation in switching applications. However, this part exhibits larger channel-to-channel resistance variation (4Ohm versus 1.5Ohm), which may impact applications requiring precise channel matching.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both DG407DJ+ and ADG407BNZ carry ROHS3 compliance certification, meeting current environmental and regulatory requirements.

Q: What is the package compatibility between all three parts?

A: All three parts (DG407DJ, DG407DJ+, ADG407BNZ) use identical 28-DIP through-hole packaging with 0.600" (15.24mm) pin spacing, enabling direct PCB-level substitution.

Q: Which part should be selected for new designs?

A: DG407DJ+ is the recommended choice for new designs, as it provides full electrical equivalence to the original part, active product status, and ROHS3 compliance without supply voltage restrictions.

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