MAX319EPA+ Equivalent & Substitute Parts

Part Overview

The MAX319EPA+ is a single-circuit SPDT (Single Pole Double Throw) analog switch manufactured by Analog Devices Inc./Maxim Integrated. This 8-DIP through-hole component operates as a 2:1 multiplexer/demultiplexer with 35Ohm on-state resistance, designed for signal routing and switching applications across industrial and commercial temperature ranges. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating, making it suitable for long-term production use. Equivalent and substitute parts are identified when they maintain identical electrical performance parameters and mechanical compatibility within the specified operating conditions.

Key Parameters

Parameter	Value
Switch Circuit Type	SPDT
Multiplexer/Demultiplexer Configuration	2:1
Number of Circuits	1
On-State Resistance (Max)	35Ohm
Channel-to-Channel Matching (ΔRon)	2Ohm (Max)
Voltage - Supply, Single (V+)	10V ~ 30V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V
Switch Time (Ton, Toff) (Max)	175ns, 145ns
Charge Injection	3pC
Channel Capacitance (CS(off), CD(off))	8pF, 8pF
Current - Leakage (IS(off)) (Max)	250pA
Crosstalk	-85dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Through Hole
Package / Case	8-DIP (0.300", 7.62mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX319EPA+ is determined by strict equivalence across all critical electrical and mechanical parameters. The primary substitution criteria are:

Electrical Performance Parameters:

Switch circuit configuration (SPDT)
Multiplexer/demultiplexer ratio (2:1)
On-state resistance specification (35Ohm maximum)
Channel-to-channel matching tolerance (2Ohm maximum)
Supply voltage ranges (single and dual configurations)
Switch timing specifications (Ton, Toff)
Charge injection and capacitance characteristics
Leakage current and crosstalk performance

Mechanical & Compliance Parameters:

Package type (8-DIP through-hole)
Physical dimensions (0.300", 7.62mm)
Operating temperature range (-40°C ~ 85°C)
RoHS3 compliance status
Moisture sensitivity level (MSL 1)

Only parts meeting all specified parameters within the defined tolerances qualify as direct substitutes. The MAX319EPA+ represents the current equivalent part for this application requirement.

Parameter Comparison

Parameter	MAX319EPA+ (Main Part)	MAX319EPA+ (Direct Equivalent)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Switch Circuit	SPDT	SPDT
Multiplexer/Demultiplexer Circuit	2:1	2:1
Number of Circuits	1	1
On-State Resistance (Max)	35Ohm	35Ohm
Channel-to-Channel Matching (ΔRon)	2Ohm (Max)	2Ohm (Max)
Voltage - Supply, Single (V+)	10V ~ 30V	10V ~ 30V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V	±4.5V ~ 20V
Switch Time (Ton, Toff) (Max)	175ns, 145ns	175ns, 145ns
Charge Injection	3pC	3pC
Channel Capacitance (CS(off), CD(off))	8pF, 8pF	8pF, 8pF
Current - Leakage (IS(off)) (Max)	250pA	250pA
Crosstalk	-85dB @ 1MHz	-85dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active

Engineering Selection Recommendations

The MAX319EPA+ maintains Active product status with full RoHS3 compliance and REACH unaffected classification, confirming its suitability for current production applications. The part carries MSL 1 (Unlimited) moisture sensitivity rating, eliminating moisture-related handling restrictions during assembly and storage.

Selection of equivalent parts must prioritize matching all electrical parameters within specified tolerances, particularly on-state resistance (35Ohm maximum), channel-to-channel matching (2Ohm maximum), and switching time specifications. The 8-DIP through-hole package format requires PCB footprint compatibility verification. Supply voltage configuration (single or dual) must align with circuit design requirements.

Compliance certifications including RoHS3 status and REACH classification should be verified for regulatory requirements in target applications and geographic markets.

Frequently Asked Questions (FAQ)

Q: What defines a valid substitute for the MAX319EPA+? A: A valid substitute must maintain identical electrical specifications including SPDT switch configuration, 2:1 multiplexer ratio, 35Ohm on-state resistance, matching tolerance, supply voltage ranges, switching times, and all signal integrity parameters. The package must be 8-DIP through-hole with identical physical dimensions and operating temperature range.

Q: Can I use a different package type as a substitute? A: No. The MAX319EPA+ is specified for 8-DIP through-hole mounting (0.300", 7.62mm). Different package types (surface mount, different pin counts, or alternative form factors) are not substitutes and require complete circuit redesign and PCB layout modification.

Q: Are there any compatibility considerations for PCB assembly? A: The through-hole mounting type requires standard DIP sockets or direct PCB insertion. Verify PCB footprint spacing matches the 0.300" (7.62mm) DIP standard. No special assembly procedures are required beyond standard through-hole soldering practices.

Q: What is the significance of the 2Ohm channel-to-channel matching specification? A: Channel-to-channel matching (ΔRon) of 2Ohm maximum ensures consistent on-state resistance between the two switch channels. This parameter is critical for applications requiring balanced signal routing or multiplexing where channel uniformity affects system performance.

Q: Does the MSL 1 rating affect component handling? A: MSL 1 (Unlimited) indicates no moisture sensitivity restrictions. The component does not require dry-pack storage, desiccant handling, or bake-out procedures prior to assembly, simplifying inventory and manufacturing logistics.

Q: How do the supply voltage ranges affect circuit design? A: The MAX319EPA+ supports both single supply (10V ~ 30V) and dual supply (±4.5V ~ 20V) configurations. Circuit design must specify which supply configuration is used, as this determines the biasing and signal level requirements for switch control inputs.

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