MAX4595EXK-T Equivalent & Substitute Parts

Part Overview

The MAX4595EXK-T is a single-circuit SPST-NC (Normally Closed) analog switch manufactured by Analog Devices Inc./Maxim Integrated, housed in a 5-TSSOP SC-70-5 package. This component operates across a 2V to 5.5V single supply range with a 10Ω on-state resistance and 300MHz bandwidth, suitable for signal routing and multiplexing applications in compact form factors.

The MAX4595EXK-T is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements.

Key Parameters

Parameter	Value
Switch Circuit Type	SPST - NC (Normally Closed)
Number of Circuits	1
On-State Resistance (Max)	10Ω
Voltage Supply Range (V+)	2V ~ 5.5V
Switch Time (Ton/Toff)	35ns / 40ns
-3dB Bandwidth	300MHz
Charge Injection	2pC
Channel Capacitance (CS(off)/CD(off))	8pF / 8pF
Leakage Current (IS(off)) Max	500pA
Operating Temperature	-40°C ~ 85°C
Package Type	5-TSSOP, SC-70-5, SOT-353
Mounting Type	Surface Mount
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4595EXK-T is determined by the following critical parameters:

Switch Circuit Type: SPST-NC topology is mandatory for direct functional equivalence
On-State Resistance: Maximum 10Ω tolerance for signal integrity in routing applications
Supply Voltage Range: Minimum 2V compatibility required; parts with 2.4V minimum are acceptable for most applications
Package Compatibility: SC-70-5 (5-TSSOP) package is preferred for pin-compatible substitution; SOT-23-5 variants require PCB layout modification
Operating Temperature Range: -40°C to 85°C specification must be met or exceeded
RoHS Compliance: Active parts with ROHS3 compliance are preferred over obsolete non-compliant originals

Substitute parts are grouped into three categories:

Parametric Equivalents: Identical electrical specifications with improved product status
Direct Substitutes: Functionally equivalent with minor parameter variations within acceptable tolerances
Alternative Options: Different package or slightly modified performance characteristics requiring design consideration

Parameter Comparison

Part Number	Manufacturer	Switch Type	Ron (Max)	V+ Range	Ton/Toff (Max)	Bandwidth	Package	Product Status	RoHS Status
MAX4595EXK-T	Analog Devices/Maxim	SPST-NC	10Ω	2V ~ 5.5V	35ns/40ns	300MHz	SC-70-5	Obsolete	Non-compliant
MAX4595EXK+T	Analog Devices/Maxim	SPST-NC	10Ω	2V ~ 5.5V	35ns/40ns	300MHz	SC-70-5	Active	ROHS3 Compliant
MAX4595DCKR	Texas Instruments	SPST-NC	10Ω	2.4V ~ 5.5V	35ns/40ns	300MHz	SC-70-5	Active	ROHS3 Compliant
MAX4595DBVR	Texas Instruments	SPST-NC	10Ω	2.4V ~ 5.5V	35ns/40ns	300MHz	SOT-23-5	Active	ROHS3 Compliant
MAX4597DCKR	Texas Instruments	SPST-NC	10Ω	2.4V ~ 5.5V	35ns/40ns	300MHz	SC-70-5	Active	ROHS3 Compliant
TS5A4595DCKR	Texas Instruments	SPST-NC	8Ω	2V ~ 5.5V	17ns/14ns	450MHz	SC-70-5	Active	ROHS3 Compliant
TS5A4595DBVR	Texas Instruments	SPST-NC	8Ω	2V ~ 5.5V	17ns/14ns	450MHz	SOT-23-5	Active	ROHS3 Compliant
ADG742BKSZ5-REEL7	Analog Devices	SPST-NC	3Ω	1.8V ~ 5.5V	12ns/8ns	200MHz	SC-70-5	Active	ROHS3 Compliant
MAX4596DCKR	Texas Instruments	SPST-NO	10Ω	2.4V ~ 5.5V	35ns/40ns	300MHz	SC-70-5	Active	ROHS3 Compliant
MAX4594DCKR	Texas Instruments	SPST-NO	10Ω	2.4V ~ 5.5V	35ns/40ns	300MHz	SC-70-5	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation - Pin-Compatible Replacement: MAX4595DCKR or MAX4595EXK+T provide direct functional equivalence with identical electrical specifications. Both are active products with ROHS3 compliance. MAX4595DCKR is available from Texas Instruments with 3,100 units in stock. MAX4595EXK+T maintains the original Analog Devices/Maxim source with 30,200 units available.

High-Performance Alternative - Enhanced Specifications: TS5A4595DCKR offers superior performance with 8Ω on-state resistance (versus 10Ω), faster switching times (17ns/14ns versus 35ns/40ns), and higher bandwidth (450MHz versus 300MHz). This part maintains SC-70-5 package compatibility and 2V minimum supply voltage. Selection is appropriate when improved signal integrity or faster switching is required.

Package Variant - SOT-23-5 Form Factor: MAX4595DBVR and TS5A4595DBVR provide SOT-23-5 packaging for applications requiring larger pad geometry or different PCB layout constraints. Both maintain SPST-NC functionality with ROHS3 compliance. PCB layout modification is required due to different pin spacing.

Lower On-State Resistance Option: ADG742BKSZ5-REEL7 provides 3Ω on-state resistance with extended supply range (1.8V minimum). This part is suitable for applications requiring minimal signal attenuation. Note: 200MHz bandwidth is lower than the original specification.

Not Recommended for Direct Substitution: MAX4596DCKR and MAX4594DCKR feature SPST-NO (Normally Open) topology, which is functionally different from the SPST-NC requirement. These parts are suitable only for applications where normally-open switching behavior is acceptable.

Frequently Asked Questions (FAQ)

Q: Can MAX4595DCKR directly replace MAX4595EXK-T without PCB modification? A: Yes. Both parts use the 5-TSSOP SC-70-5 package with identical pin assignments. Electrical specifications are equivalent within the specified operating range. The minimum supply voltage difference (2.4V versus 2V) is acceptable for most applications operating above 2.4V.

Q: What is the difference between SPST-NC and SPST-NO switch types? A: SPST-NC (Normally Closed) maintains signal continuity when unpowered; the switch opens when activated. SPST-NO (Normally Open) blocks signal continuity when unpowered; the switch closes when activated. These are functionally opposite and not interchangeable without circuit redesign.

Q: Is TS5A4595DCKR a suitable replacement if my application requires faster switching? A: Yes, if your circuit can accommodate the improved specifications. TS5A4595DCKR provides 17ns/14ns switching times versus 35ns/40ns, lower on-state resistance (8Ω versus 10Ω), and higher bandwidth (450MHz versus 300MHz). All parameters are superior or equivalent to the original part. Verify that your application benefits from these improvements.

Q: Can I use MAX4595DBVR instead of MAX4595DCKR? A: Both parts are electrically equivalent with identical specifications. The difference is packaging: MAX4595DBVR uses SOT-23-5 while MAX4595DCKR uses SC-70-5. SOT-23-5 requires PCB layout modification due to different pin spacing and pad geometry. Select based on your PCB design constraints.

Q: Why is ADG742BKSZ5-REEL7 listed as an alternative if it has lower bandwidth? A: ADG742BKSZ5-REEL7 is provided as an option for applications where lower on-state resistance (3Ω) is beneficial and 200MHz bandwidth is sufficient. It is not a direct replacement but an alternative for specific design requirements. Verify bandwidth compatibility with your signal frequencies before selection.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts carry ROHS3 compliance certification. The original MAX4595EXK-T is RoHS non-compliant. Compliance is mandatory for new designs and many manufacturing environments.

Q: What is the inventory status for each substitute part? A: MAX4595EXK+T: 30,200 units; MAX4595DCKR: 3,100 units; TS5A4595DCKR: 4,100 units; TS5A4595DBVR: 20,100 units; ADG742BKSZ5-REEL7: 4,648 units; MAX4595DBVR: 3,100 units. Verify current availability with your supplier before design commitment.

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