PI5A4596ACEX Equivalent & Substitute Parts

Part Overview

The PI5A4596ACEX is a single-circuit SPST-NO analog switch manufactured by Diodes Incorporated, designed for low-impedance signal routing applications. It features a 10Ohm on-state resistance, operates across 2V to 5.5V supply range, and is packaged in SC-70-5 (5-TSSOP) form factor. The device is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI5A4596ACEX
Manufacturer	Diodes Incorporated
Switch Circuit Type	SPST - NO (Single Pole Single Throw - Normally Open)
Multiplexer/Demultiplexer Circuit	1:1
Number of Circuits	1
On-State Resistance (Max)	10Ohm
Voltage - Supply, Single (V+)	2V ~ 5.5V
Switch Time (Ton, Toff) (Max)	38ns, 42ns
-3dB Bandwidth	30MHz
Charge Injection	2pC
Channel Capacitance (CS(off), CD(off))	8pF, 8pF
Current - Leakage (IS(off)) (Max)	500pA
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	5-TSSOP, SC-70-5, SOT-353
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the PI5A4596ACEX is determined by the following critical parameters:

Switch Circuit Type: Must be SPST - NO
Multiplexer/Demultiplexer Circuit: Must be 1:1
Number of Circuits: Must be 1
On-State Resistance (Max): Must not exceed 10Ohm
Voltage - Supply, Single (V+): Must support the 2V ~ 5.5V range or a subset thereof
Operating Temperature: Must support -40°C ~ 85°C (TA)
Package / Case: SC-70-5 (5-TSSOP, SOT-353) or SOT-23-5 (SC-74A, SOT-753) are acceptable
RoHS Status: Must be ROHS3 Compliant
Moisture Sensitivity Level (MSL): Must be 1 (Unlimited)

All substitute parts listed meet these core electrical and mechanical requirements. Variations in secondary parameters such as switch time, bandwidth, and leakage current are documented for engineering evaluation but do not disqualify substitution eligibility.

Parameter Comparison

Parameter	PI5A4596ACEX (Main)	MAX4596DBVR	MAX4596DCKR	SN74LVC1G66DCKT	TS5A4596DBVR	TS5A4596DCKR
Manufacturer	Diodes Incorporated	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Switch Circuit Type	SPST - NO	SPST - NO	SPST - NO	SPST - NO	SPST - NO	SPST - NO
Multiplexer/Demultiplexer Circuit	1:1	1:1	1:1	1:1	1:1	1:1
Number of Circuits	1	1	1	1	1	1
On-State Resistance (Max)	10Ohm	10Ohm	10Ohm	10Ohm	8Ohm	8Ohm
Voltage - Supply, Single (V+)	2V ~ 5.5V	2.4V ~ 5.5V	2.4V ~ 5.5V	1.65V ~ 5.5V	2V ~ 5.5V	2V ~ 5.5V
Switch Time (Ton, Toff) (Max)	38ns, 42ns	35ns, 40ns	35ns, 40ns	4.2ns, 5ns	17ns, 14ns	17ns, 14ns
-3dB Bandwidth	30MHz	300MHz	300MHz	300MHz	450MHz	450MHz
Charge Injection	2pC	2pC	2pC	Not specified	2pC	2pC
Channel Capacitance (CS(off), CD(off))	8pF, 8pF	8pF, 8pF	8pF, 8pF	6pF	6.5pF, 6.5pF	6.5pF, 6.5pF
Current - Leakage (IS(off)) (Max)	500pA	500pA	500pA	100nA	500pA	500pA
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	5-TSSOP, SC-70-5, SOT-353	SC-74A, SOT-753	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	SC-74A, SOT-753	5-TSSOP, SC-70-5, SOT-353
Product Status	Obsolete	Active	Active	Last Time Buy	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

MAX4596DCKR is the primary substitute for direct replacement. It maintains identical package form factor (SC-70-5), matching on-state resistance (10Ohm), and equivalent electrical performance. The device is in active production status with robust supply availability (3052 pcs in stock). Texas Instruments manufacturing ensures consistent quality and long-term availability.

TS5A4596DCKR provides an alternative with improved performance characteristics. It offers lower on-state resistance (8Ohm), faster switching times (17ns/14ns vs. 38ns/42ns), and higher bandwidth (450MHz vs. 30MHz). Package compatibility is maintained (SC-70-5). This option is suitable for applications requiring enhanced signal integrity and reduced insertion loss.

MAX4596DBVR and TS5A4596DBVR are functionally equivalent to their DCKR counterparts but use SOT-23-5 packaging (SC-74A, SOT-753). These are appropriate for designs where PCB layout accommodates the alternative package footprint.

SN74LVC1G66DCKT is available in high volume (350595 pcs in stock) and offers superior switching performance (4.2ns/5ns) and lower leakage current (100nA). However, it is classified as Last Time Buy, indicating discontinued production. This option is suitable only for applications where extended supply is not required or where existing inventory is sufficient.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX4596DBVR replace PI5A4596ACEX directly?

A: MAX4596DBVR is electrically equivalent but uses SOT-23-5 packaging instead of SC-70-5. PCB layout modification is required. For direct footprint compatibility, use MAX4596DCKR instead.

Q: What is the difference between TS5A4596DCKR and MAX4596DCKR?

A: Both use SC-70-5 packaging and support the 2V ~ 5.5V supply range. TS5A4596DCKR offers lower on-state resistance (8Ohm vs. 10Ohm), faster switching times, and higher bandwidth. Selection depends on application performance requirements.

Q: Why is SN74LVC1G66DCKT marked as Last Time Buy?

A: SN74LVC1G66DCKT is in end-of-life status with discontinued production. While electrically suitable, it should not be selected for new designs requiring long-term supply continuity. Use MAX4596DCKR or TS5A4596DCKR for active production alternatives.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original PI5A4596ACEX specifications.

Q: What supply voltage range do these switches support?

A: PI5A4596ACEX, TS5A4596DCKR, and TS5A4596DBVR support 2V ~ 5.5V. MAX4596DCKR and MAX4596DBVR support 2.4V ~ 5.5V. SN74LVC1G66DCKT supports the widest range: 1.65V ~ 5.5V. Verify application supply voltage compatibility before selection.

Q: Can I use these switches interchangeably in existing designs?

A: Package compatibility must be verified. SC-70-5 packages (PI5A4596ACEX, MAX4596DCKR, SN74LVC1G66DCKT, TS5A4596DCKR) are directly interchangeable on the same PCB. SOT-23-5 packages (MAX4596DBVR, TS5A4596DBVR) require PCB layout modification.

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