MAX338CPE Equivalent & Substitute Parts

Part Overview

The MAX338CPE is an 8:1 analog multiplexer/demultiplexer IC manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-DIP package. This component functions as a single-circuit switch with 400Ohm on-state resistance, designed for signal routing and selection applications across industrial and commercial systems. The MAX338CPE is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, maintenance, and new production requirements. Active alternatives with comparable or enhanced electrical characteristics are available to ensure design continuity.

Key Parameters

Parameter	Value
Multiplexer/Demultiplexer Circuit Configuration	8:1
Number of Circuits	1
On-State Resistance (Max)	400Ohm
Channel-to-Channel Matching (ΔRon)	4Ohm
Voltage - Supply, Single (V+)	4.5V ~ 30V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V
Switch Time (Ton, Toff) (Max)	500ns, 500ns
Charge Injection	1.5pC
Channel Capacitance (CS(off), CD(off))	3pF, 11pF
Current - Leakage (IS(off)) (Max)	20pA
Crosstalk	-92dB @ 100kHz
Operating Temperature	0°C ~ 70°C (TA)
Package / Case	16-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MAX338CPE is determined by the following mandatory criteria:

Circuit Configuration: 8:1 multiplexer/demultiplexer topology (single circuit)
Package Compatibility: 16-DIP (0.300", 7.62mm) through-hole mounting
Supply Voltage Range: Overlap with 4.5V ~ 30V (single supply) or ±4.5V ~ 20V (dual supply)
On-State Resistance: Maximum 400Ohm acceptable for signal path integrity
Regulatory Compliance: ROHS3 compliant, REACH unaffected status

Three substitute parts meet these criteria with varying electrical performance characteristics:

MAX338CPE+ (Analog Devices Inc./Maxim Integrated) — Direct functional equivalent with identical electrical specifications; differs only in packaging (Tube) and product status (Active)
ADG608BNZ (Analog Devices Inc.) — Enhanced performance substitute with lower on-state resistance (30Ohm), faster switching (75ns/45ns), extended temperature range (-40°C ~ 85°C), and improved supply voltage flexibility (3.3V ~ 5V single supply)
DG408DJ-E3 (Vishay Siliconix) — Alternative substitute with moderate on-state resistance (100Ohm), intermediate switching speed (150ns), extended temperature range (-40°C ~ 85°C), and wide supply voltage compatibility (5V ~ 36V single supply)

Parameter Comparison

Parameter	MAX338CPE (Main)	MAX338CPE+ (Direct Equivalent)	ADG608BNZ (Enhanced)	DG408DJ-E3 (Alternative)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc.	Vishay Siliconix
Product Status	Obsolete	Active	Active	Active
Multiplexer Configuration	8:1	8:1	8:1	8:1
On-State Resistance (Max)	400Ohm	400Ohm	30Ohm	100Ohm
Channel-to-Channel Matching (ΔRon)	4Ohm	4Ohm	5Ohm (Max)	15Ohm (Max)
Voltage - Supply, Single (V+)	4.5V ~ 30V	4.5V ~ 30V	3.3V ~ 5V	5V ~ 36V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V	±4.5V ~ 20V	±5V	±5V ~ 20V
Switch Time Ton (Max)	500ns	500ns	75ns	150ns
Switch Time Toff (Max)	500ns	500ns	45ns	150ns
Charge Injection	1.5pC	1.5pC	6pC	20pC
Channel Capacitance CS(off)	3pF	3pF	9pF	3pF
Channel Capacitance CD(off)	11pF	11pF	40pF	26pF
Current - Leakage (IS(off)) (Max)	20pA	20pA	500pA	500pA
Crosstalk	-92dB @ 100kHz	-92dB @ 100kHz	-85dB @ 100kHz	Not specified
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	16-DIP (0.300", 7.62mm)	16-DIP (0.300", 7.62mm)	16-DIP (0.300", 7.62mm)	16-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MAX338CPE+ (Direct Replacement)

The MAX338CPE+ is the primary substitute for obsolete MAX338CPE applications. It maintains identical electrical specifications and package form factor, requiring no circuit redesign. Both components are ROHS3 compliant and REACH unaffected. The MAX338CPE+ is currently in active production status with confirmed inventory availability (2100 Pcs), ensuring supply chain continuity for maintenance and low-volume production requirements.

ADG608BNZ (Performance-Enhanced Alternative)

The ADG608BNZ is suitable for applications where improved performance characteristics justify design modification. This substitute offers significantly lower on-state resistance (30Ohm vs. 400Ohm), faster switching response (75ns/45ns vs. 500ns), and extended operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C). The ADG608BNZ is limited to 3.3V ~ 5V single supply operation, requiring verification of compatibility with existing power distribution. ROHS3 compliance and active product status confirm regulatory alignment.

DG408DJ-E3 (Broad Supply Voltage Alternative)

The DG408DJ-E3 from Vishay Siliconix accommodates applications requiring extended supply voltage range (5V ~ 36V single supply). On-state resistance (100Ohm) and switching speed (150ns) represent intermediate performance between the MAX338CPE and ADG608BNZ. This substitute extends operating temperature to -40°C ~ 85°C and maintains ROHS3 compliance. The DG408DJ-E3 is appropriate for industrial systems with variable supply voltages and wide temperature environments.

Frequently Asked Questions (FAQ)

Q: Can MAX338CPE+ be used as a direct drop-in replacement for MAX338CPE?

A: Yes. The MAX338CPE+ maintains identical electrical specifications, on-state resistance (400Ohm), switching characteristics (500ns), supply voltage ranges (4.5V ~ 30V single, ±4.5V ~ 20V dual), and 16-DIP package form factor. No circuit modifications are required. The primary difference is product status (Active vs. Obsolete) and packaging format (Tube).

Q: What are the key differences between ADG608BNZ and MAX338CPE?

A: The ADG608BNZ provides superior electrical performance with 30Ohm on-state resistance (vs. 400Ohm), faster switching (75ns/45ns vs. 500ns), and extended temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C). However, supply voltage is restricted to 3.3V ~ 5V single supply, requiring verification against existing power architecture. Leakage current increases from 20pA to 500pA, and charge injection increases from 1.5pC to 6pC.

Q: Is DG408DJ-E3 compatible with the MAX338CPE circuit design?

A: The DG408DJ-E3 maintains 16-DIP package compatibility and 8:1 multiplexer configuration. However, on-state resistance (100Ohm) and switching speed (150ns) differ from MAX338CPE specifications. Circuit performance must be evaluated for applications sensitive to signal path resistance or switching delay. Supply voltage range (5V ~ 36V single supply) may provide advantages in systems with variable power sources.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. MAX338CPE+, ADG608BNZ, and DG408DJ-E3 are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for commercial and industrial applications.

Q: Which substitute is recommended for new designs?

A: Selection depends on application requirements. For direct replacement of existing MAX338CPE circuits, use MAX338CPE+. For applications requiring improved performance and operating within 3.3V ~ 5V supply range, ADG608BNZ is optimal. For systems requiring extended supply voltage (up to 36V) and wide temperature operation, DG408DJ-E3 is appropriate. All three options are active products with confirmed inventory availability.

Q: Can these parts be used interchangeably in the same PCB assembly?

A: All three substitute parts use identical 16-DIP (0.300", 7.62mm) through-hole packaging, enabling mechanical interchangeability on PCB layouts. Electrical interchangeability depends on circuit tolerance to differences in on-state resistance, switching speed, leakage current, and supply voltage requirements. Circuit simulation or prototype testing is necessary to confirm functional equivalence for specific applications.

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